| granule_type: | ATL10 |
| short_name: | ATL10 |
| level: | 3A |
| description: | Estimates of freeboard using sea ice heights and available sea surface heights within at km length scale; contains statistics of sea surface samples used in the estimates. |
| contributor_name: | Thomas E Neumann (thomas.neumann@nasa.gov), Thorsten Markus (thorsten.markus@nasa.gov), Suneel Bhardwaj (suneel.bhardwaj@nasa.gov) David W Hancock III (david.w.hancock@nasa.gov) |
| contributor_role: | Instrument Engineer, Investigator, Principle Investigator, Data Producer, Data Producer |
| Conventions: | CF-1.6 |
| date_type: | UTC |
| featureType: | trajectory |
| geospatial_lat_units: | degrees_north |
| geospatial_lon_units: | degrees_east |
| identifier_product_doi: | 10.5067/ATLAS/ATL10.001 |
| identifier_product_doi_authority: | http://dx.doi.org |
| identifier_product_type: | ATL10 |
| license: | Data may not be reproduced or distributed without including the citation for this product included in this metadata. Data may not be distributed in an altered form without the written permission of the ICESat-2 Science Project Office at NASA/GSFC. |
| naming_authority: | http://dx.doi.org |
| spatial_coverage_type: | Horizontal |
| standard_name_vocabulary: | CF-1.6 |
| time_type: | CCSDS UTC-A |
| date_created: | 2019-05-26T17:03:17.000000Z |
| hdfversion: | HDF5 1.10.3 |
| history: | 2019-05-26T17:03:17.000000Z;2f93a440-4b7f-336d-827d-21c3cb49f736;Created by PGE atlas_l3a_fb Version 3.1 |
| identifier_file_uuid: | 2f93a440-4b7f-336d-827d-21c3cb49f736 |
| identifier_product_format_version: | 3.2 |
| time_coverage_duration: | 5658.0000000000000 |
| time_coverage_end: | 2018-12-27T23:25:31.000000Z |
| time_coverage_start: | 2018-12-27T21:51:13.000000Z |
| geospatial_lat_min: | -76.343291547282632 |
| geospatial_lon_min: | -161.61795052787238 |
| geospatial_lat_max: | -67.049312327424531 |
| geospatial_lon_max: | 11.507966597329181 |
| publisher_name: | NSIDC DAAC > NASA National Snow and Ice Data Center Distributed Active Archive Center |
| publisher_email: | nsidc@nsidc.org |
| publisher_url: | http://nsidc.org/daac/ |
| title: | ATLAS/ICESat-2 L2A Normalized Relative Backscatter Profiles |
| identifier_file_product_type: | ATL10 |
| institution: | National Aeronautics and Space Administration (NASA) |
| creator_name: | GSFC I-SIPS > ICESat-2 Science Investigator-led Processing System |
| summary: | The purpose of ATL10 is to provide along-track freeboard estimates and associated statistics. |
| keywords: | EARTH SCIENCE > SPECTRAL/ENGINEERING > LIDAR > LIDAR BACKSCATTER > NONE > NONE > NONE |
| keywords_vocabulary: | NASA/GCMD Science Keywords |
| citation: | Cite these data in publications as follows: The data used in this study were produced by the ICESat-2 Science Project Office at NASA/GSFC. The data archive site is the NASA National Snow and Ice Data Center Distributed Active Archive Center. |
| processing_level: | 2A |
| references: | http://nsidc.org/data/icesat2/data.html |
| project: | ICESat-2 > Ice, Cloud, and land Elevation Satellite-2 |
| instrument: | ATLAS > Advanced Topographic Laser Altimeter System |
| platform: | ICESat-2 > Ice, Cloud, and land Elevation Satellite-2 |
| source: | Spacecraft |
| Unlimited_Dimension: | freeboard_swath_segment_delta_time, freeboard_swath_segment_ds_si_hist_bins, freeboard_swath_segment_gt1l_swath_freeboard_delta_time, freeboard_swath_segment_gt1r_swath_freeboard_delta_time, freeboard_swath_segment_gt2l_swath_freeboard_delta_time, freeboard_swath_segment_gt2r_swath_freeboard_delta_time, freeboard_swath_segment_gt3l_swath_freeboard_delta_time, freeboard_swath_segment_gt3r_swath_freeboard_delta_time, gt1l_freeboard_beam_segment_beam_freeboard_delta_time, gt1l_freeboard_beam_segment_delta_time, gt1l_freeboard_beam_segment_ds_si_hist_bins, gt1l_freeboard_beam_segment_geophysical_delta_time, gt1l_freeboard_beam_segment_height_segments_delta_time, gt1l_leads_delta_time, gt1r_freeboard_beam_segment_beam_freeboard_delta_time, gt1r_freeboard_beam_segment_delta_time, gt1r_freeboard_beam_segment_ds_si_hist_bins, gt1r_freeboard_beam_segment_geophysical_delta_time, gt1r_freeboard_beam_segment_height_segments_delta_time, gt1r_leads_delta_time, gt2l_freeboard_beam_segment_beam_freeboard_delta_time, gt2l_freeboard_beam_segment_delta_time, gt2l_freeboard_beam_segment_ds_si_hist_bins, gt2l_freeboard_beam_segment_geophysical_delta_time, gt2l_freeboard_beam_segment_height_segments_delta_time, gt2l_leads_delta_time, gt2r_freeboard_beam_segment_beam_freeboard_delta_time, gt2r_freeboard_beam_segment_delta_time, gt2r_freeboard_beam_segment_ds_si_hist_bins, gt2r_freeboard_beam_segment_geophysical_delta_time, gt2r_freeboard_beam_segment_height_segments_delta_time, gt2r_leads_delta_time, gt3l_freeboard_beam_segment_beam_freeboard_delta_time, gt3l_freeboard_beam_segment_delta_time, gt3l_freeboard_beam_segment_ds_si_hist_bins, gt3l_freeboard_beam_segment_geophysical_delta_time, gt3l_freeboard_beam_segment_height_segments_delta_time, gt3l_leads_delta_time, gt3r_freeboard_beam_segment_beam_freeboard_delta_time, gt3r_freeboard_beam_segment_delta_time, gt3r_freeboard_beam_segment_ds_si_hist_bins, gt3r_freeboard_beam_segment_geophysical_delta_time, gt3r_freeboard_beam_segment_height_segments_delta_time, gt3r_leads_delta_time, orbit_info_crossing_time, orbit_info_sc_orient_time |
| orbit_info_cycle_number: | Array of 16 bit Integers [orbit_info_crossing_time = 0..0] units: 1 contentType: referenceInformation long_name: Cycle Number description: A count of the number of exact repeats of this reference orbit. source: Operations valid_min: 0 valid_max: 50 origname: cycle_number fullnamepath: /orbit_info/cycle_number coordinates: orbit_info_crossing_time |
| orbit_info_orbit_number: | Array of 16 bit Unsigned integers [orbit_info_crossing_time = 0..0] units: 1 contentType: referenceInformation long_name: Orbit Number description: Unique identifying number for each planned ICESat-2 orbit. source: Operations valid_min: 1 valid_max: 65000 origname: orbit_number fullnamepath: /orbit_info/orbit_number coordinates: orbit_info_crossing_time |
| orbit_info_lan: | Array of 64 bit Reals [orbit_info_crossing_time = 0..0] units: degrees_east contentType: referenceInformation long_name: Ascending Node Longitude description: Longitude at the ascending node crossing. source: POD/PPD valid_min: -180.00000000000000 valid_max: 180.00000000000000 origname: lan fullnamepath: /orbit_info/lan coordinates: orbit_info_crossing_time |
| orbit_info_sc_orient: | Array of 16 bit Integers [orbit_info_sc_orient_time = 0..0] units: 1 contentType: referenceInformation long_name: Spacecraft Orientation description: This parameter tracks the spacecraft orientation between forward, backward and transitional flight modes. ICESat-2 is considered to be flying forward when the weak beams are leading the strong beams; and backward when the strong beams are leading the weak beams. ICESat-2 is considered to be in transition while it is maneuvering between the two orientations. Science quality is potentially degraded while in transition mode. source: POD/PPD flag_meanings: backward forward transition flag_values: 0, 1, 2 valid_min: 0 valid_max: 2 origname: sc_orient fullnamepath: /orbit_info/sc_orient coordinates: orbit_info_sc_orient_time |
| orbit_info_rgt: | Array of 16 bit Integers [orbit_info_crossing_time = 0..0] units: 1 contentType: referenceInformation long_name: Reference Ground track description: The reference ground track (RGT) is the track on the earth at which a specified unit vector within the observatory is pointed. Under nominal operating conditions, there will be no data collected along the RGT, as the RGT is spanned by GT3 and GT4. During slews or off-pointing, it is possible that ground tracks may intersect the RGT. The ICESat-2 mission has 1387 RGTs. source: POD/PPD valid_min: 1 valid_max: 1387 origname: rgt fullnamepath: /orbit_info/rgt coordinates: orbit_info_crossing_time |
| gt1r_freeboard_beam_segment_beam_refsurf_sigma: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: reference surface sigma description: Reference surface height sigma (standard devaition) - weighted combination of lead sigmas in this beam for this swath segment source: ATBD section 5 origname: beam_refsurf_sigma fullnamepath: /gt1r/freeboard_beam_segment/beam_refsurf_sigma coordinates: gt1r_freeboard_beam_segment_delta_time gt1r_freeboard_beam_segment_latitude gt1r_freeboard_beam_segment_longitude |
| gt1r_freeboard_beam_segment_beam_refsurf_alongtrack_slope: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: degrees contentType: modelResult long_name: reference surface along track slope description: Reference surface height along track slope source: ATBD section 5 origname: beam_refsurf_alongtrack_slope fullnamepath: /gt1r/freeboard_beam_segment/beam_refsurf_alongtrack_slope coordinates: gt1r_freeboard_beam_segment_delta_time gt1r_freeboard_beam_segment_latitude gt1r_freeboard_beam_segment_longitude |
| gt1r_freeboard_beam_segment_beam_lead_ndx: | Array of 32 bit Integers [gt1r_freeboard_beam_segment_delta_time = 0..48] units: 1 contentType: referenceInformation long_name: index first lead description: 1-based index to the first /GTx/leads lead used for this beam's reference surface. source: Sea Ice ATBD origname: beam_lead_ndx fullnamepath: /gt1r/freeboard_beam_segment/beam_lead_ndx coordinates: gt1r_freeboard_beam_segment_delta_time gt1r_freeboard_beam_segment_latitude gt1r_freeboard_beam_segment_longitude |
| gt1r_freeboard_beam_segment_beam_fb_height: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Beam Freeboard mean swath-segment description: Mean of the Freeboard height-segments in freeboard beam-segment source: ATBD section 5 origname: beam_fb_height fullnamepath: /gt1r/freeboard_beam_segment/beam_fb_height coordinates: gt1r_freeboard_beam_segment_delta_time gt1r_freeboard_beam_segment_latitude gt1r_freeboard_beam_segment_longitude |
| gt1r_freeboard_beam_segment_height_segments_msw_flag: | Array of 16 bit Integers [gt1r_freeboard_beam_segment_height_segments_delta_time = 0..6275] units: 1 contentType: modelResult long_name: multiple scattering warning flag description: Multiple Scattering warning flag. The multiple scattering warning flag (ATL09 parameter msw_flag) has values from -1 to 5 where zero means no multiple scattering and 5 the greatest. If no layers were detected, then msw_flag = 0. If blowing snow is detected and its estimated optical depth is greater than or equal to 0.5, then msw_flag = 5. If the blowing snow optical depth is less than 0.5, then msw_flag = 4. If no blowing snow is detected but there are cloud or aerosol layers detected, the msw_flag assumes values of 1 to 3 based on the height of the bottom of the lowest layer: < 1 km, msw_flag = 3; 1-3 km, msw_flag = 2; > 3km, msw_flag = 1. A value of -1 indicates that the signal to noise of the data was too low to reliably ascertain the presence of cloud or blowing snow. We expect values of -1 to occur only during daylight. source: ATL09 flag_meanings: cannot_determine no_layers layer_gt_3km layer_between_1_and_3_km layer_lt_1km blow_snow_od_lt_0.5 blow_snow_od_gt_0.5 flag_values: -1, 0, 1, 2, 3, 4, 5 valid_min: -1 valid_max: 5 origname: msw_flag fullnamepath: /gt1r/freeboard_beam_segment/height_segments/msw_flag coordinates: gt1r_freeboard_beam_segment_height_segments_delta_time gt1r_freeboard_beam_segment_height_segments_latitude gt1r_freeboard_beam_segment_height_segments_longitude |
| gt1r_freeboard_beam_segment_height_segments_cloud_flag_atm: | Array of 16 bit Integers [gt1r_freeboard_beam_segment_height_segments_delta_time = 0..6275] units: 1 long_name: cloud flag atm contentType: modelResult description: Number of layers found from the backscatter profile using the DDA layer finder source: ATL09 valid_min: 0 valid_max: 10 origname: cloud_flag_atm fullnamepath: /gt1r/freeboard_beam_segment/height_segments/cloud_flag_atm coordinates: gt1r_freeboard_beam_segment_height_segments_delta_time gt1r_freeboard_beam_segment_height_segments_latitude gt1r_freeboard_beam_segment_height_segments_longitude |
| gt1r_freeboard_beam_segment_height_segments_height_segment_length_seg: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_height_segments_delta_time = 0..6275] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: length of segment description: Along-track length of segment containing n_photons_actual ATL07 length_seg) source: Sea Ice ATBD origname: height_segment_length_seg fullnamepath: /gt1r/freeboard_beam_segment/height_segments/height_segment_length_seg coordinates: gt1r_freeboard_beam_segment_height_segments_delta_time gt1r_freeboard_beam_segment_height_segments_latitude gt1r_freeboard_beam_segment_height_segments_longitude |
| gt1r_freeboard_beam_segment_height_segments_height_segment_ib: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_height_segments_delta_time = 0..6275] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: inverted barometer effect description: Inverted barometer effect calculated from surface pressure source: ATBD section 4.2 origname: height_segment_ib fullnamepath: /gt1r/freeboard_beam_segment/height_segments/height_segment_ib coordinates: gt1r_freeboard_beam_segment_height_segments_delta_time gt1r_freeboard_beam_segment_height_segments_latitude gt1r_freeboard_beam_segment_height_segments_longitude |
| gt1r_freeboard_beam_segment_height_segments_bsnow_con: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_height_segments_delta_time = 0..6275] _FillValue: 3.402823466e+38 units: 1 contentType: modelResult long_name: Blowing snow confidence description: Blowing snow confidence source: ATL09 origname: bsnow_con fullnamepath: /gt1r/freeboard_beam_segment/height_segments/bsnow_con coordinates: gt1r_freeboard_beam_segment_height_segments_delta_time gt1r_freeboard_beam_segment_height_segments_latitude gt1r_freeboard_beam_segment_height_segments_longitude |
| gt1r_freeboard_beam_segment_height_segments_layer_flag: | Array of 16 bit Integers [gt1r_freeboard_beam_segment_height_segments_delta_time = 0..6275] units: 1 contentType: modelResult long_name: consolidated cloud flag description: This flag is a combination of multiple flags (cloud_flag_atm, cloud_flag_asr, and bsnow_con) and takes daytime/nighttime into consideration. A value of 1 means clouds or blowing snow are likely present. A value of 0 indicates the likely absence of clouds or blowing snow. source: ATL09 flag_meanings: likely_clear likely_cloudy flag_values: 0, 1 valid_min: 0 valid_max: 1 origname: layer_flag fullnamepath: /gt1r/freeboard_beam_segment/height_segments/layer_flag coordinates: gt1r_freeboard_beam_segment_height_segments_delta_time gt1r_freeboard_beam_segment_height_segments_latitude gt1r_freeboard_beam_segment_height_segments_longitude |
| gt1r_freeboard_beam_segment_height_segments_backgr_calc: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_height_segments_delta_time = 0..6275] _FillValue: 3.402823466e+38 units: hz contentType: modelResult long_name: background count rate calculated description: Calculated background count rate based on sun angle, surface slope, unit reflectance source: ATL07 origname: backgr_calc fullnamepath: /gt1r/freeboard_beam_segment/height_segments/backgr_calc coordinates: gt1r_freeboard_beam_segment_height_segments_delta_time gt1r_freeboard_beam_segment_height_segments_latitude gt1r_freeboard_beam_segment_height_segments_longitude |
| gt1r_freeboard_beam_segment_height_segments_bsnow_h: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_height_segments_delta_time = 0..6275] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Blowing snow top height description: Blowing snow layer top height source: ATL09 origname: bsnow_h fullnamepath: /gt1r/freeboard_beam_segment/height_segments/bsnow_h coordinates: gt1r_freeboard_beam_segment_height_segments_delta_time gt1r_freeboard_beam_segment_height_segments_latitude gt1r_freeboard_beam_segment_height_segments_longitude |
| gt1r_freeboard_beam_segment_height_segments_longitude: | Array of 64 bit Reals [gt1r_freeboard_beam_segment_height_segments_delta_time = 0..6275] units: degrees_east contentType: referenceInformation long_name: Longitude standard_name: longitude description: Longitude, WGS84, East=+,Lon of segment center source: Sea Ice ATBD valid_min: -180.00000000000000 valid_max: 180.00000000000000 origname: longitude fullnamepath: /gt1r/freeboard_beam_segment/height_segments/longitude coordinates: gt1r_freeboard_beam_segment_height_segments_delta_time gt1r_freeboard_beam_segment_height_segments_latitude |
| gt1r_freeboard_beam_segment_height_segments_background_r_norm: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_height_segments_delta_time = 0..6275] _FillValue: 3.402823466e+38 units: hz contentType: modelResult long_name: normalized background (50 shot) description: Background rate normalized to a fixed solar elevation angle source: ATL07 origname: background_r_norm fullnamepath: /gt1r/freeboard_beam_segment/height_segments/background_r_norm coordinates: gt1r_freeboard_beam_segment_height_segments_delta_time gt1r_freeboard_beam_segment_height_segments_latitude gt1r_freeboard_beam_segment_height_segments_longitude |
| gt1r_freeboard_beam_segment_height_segments_latitude: | Array of 64 bit Reals [gt1r_freeboard_beam_segment_height_segments_delta_time = 0..6275] units: degrees_north contentType: referenceInformation long_name: Latitude standard_name: latitude description: Latitude, WGS84, North=+, Lat of segment center source: Sea Ice ATBD valid_min: -90.000000000000000 valid_max: 90.000000000000000 origname: latitude fullnamepath: /gt1r/freeboard_beam_segment/height_segments/latitude coordinates: gt1r_freeboard_beam_segment_height_segments_delta_time gt1r_freeboard_beam_segment_height_segments_longitude |
| gt1r_freeboard_beam_segment_height_segments_ice_conc: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_height_segments_delta_time = 0..6275] _FillValue: 3.402823466e+38 units: 1 contentType: modelResult long_name: sea ice concentration description: Sea ice concentration percentage source: ATL07/ANC31 origname: ice_conc fullnamepath: /gt1r/freeboard_beam_segment/height_segments/ice_conc coordinates: gt1r_freeboard_beam_segment_height_segments_delta_time gt1r_freeboard_beam_segment_height_segments_latitude gt1r_freeboard_beam_segment_height_segments_longitude |
| gt1r_freeboard_beam_segment_height_segments_cloud_flag_asr: | Array of 16 bit Integers [gt1r_freeboard_beam_segment_height_segments_delta_time = 0..6275] units: 1 contentType: modelResult long_name: cloud flag asr description: Cloud flag (probability) from apparent surface reflectance. 0=clear with high confidence; 1=clear with medium confidence; 2=clear with low confidence; 3=cloudy with low confidence; 4=cloudy with medium confidence; 5=cloudy with high confidence; 6=unknown source: ATL09 flag_meanings: clear_with_high_confidence clear_with_medium_confidence clear_with_low_confidence cloudy_with_low_confidence cloudy_with_medium_confidence cloudy_with_high_confidence unknown flag_values: 0, 1, 2, 3, 4, 5, 6 valid_min: 0 valid_max: 6 origname: cloud_flag_asr fullnamepath: /gt1r/freeboard_beam_segment/height_segments/cloud_flag_asr coordinates: gt1r_freeboard_beam_segment_height_segments_delta_time gt1r_freeboard_beam_segment_height_segments_latitude gt1r_freeboard_beam_segment_height_segments_longitude |
| gt1r_freeboard_beam_segment_height_segments_height_segment_ssh_flag: | Array of 16 bit Integers [gt1r_freeboard_beam_segment_height_segments_delta_time = 0..6275] units: 1 contentType: referenceInformation long_name: Sea Surface Height Flag description: Identifiesthe height segments that are candidates for use as sea surface reference in freeboard calculations in ATL10. The flags are set as follows: 0 = sea ice; 1 = sea surface source: Sea Ice ATBD flag_meanings: sea_ice ice_surface flag_values: 0, 1 valid_min: 0 valid_max: 1 origname: height_segment_ssh_flag fullnamepath: /gt1r/freeboard_beam_segment/height_segments/height_segment_ssh_flag coordinates: gt1r_freeboard_beam_segment_height_segments_delta_time gt1r_freeboard_beam_segment_height_segments_latitude gt1r_freeboard_beam_segment_height_segments_longitude |
| gt1r_freeboard_beam_segment_height_segments_height_segment_surf_sigma: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_height_segments_delta_time = 0..6275] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: h surface sigma description: Sigma (standard deviation) estimate of the surface height (ATL07 h_surface_error) source: Sea Ice ATBD origname: height_segment_surf_sigma fullnamepath: /gt1r/freeboard_beam_segment/height_segments/height_segment_surf_sigma coordinates: gt1r_freeboard_beam_segment_height_segments_delta_time gt1r_freeboard_beam_segment_height_segments_latitude gt1r_freeboard_beam_segment_height_segments_longitude |
| gt1r_freeboard_beam_segment_height_segments_backgr_r_200: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_height_segments_delta_time = 0..6275] _FillValue: 3.402823466e+38 units: hz contentType: modelResult long_name: background rate 200 hz description: Background count rate, averaged over the segment based on ATLAS 50 pulse counts source: ATL09 origname: backgr_r_200 fullnamepath: /gt1r/freeboard_beam_segment/height_segments/backgr_r_200 coordinates: gt1r_freeboard_beam_segment_height_segments_delta_time gt1r_freeboard_beam_segment_height_segments_latitude gt1r_freeboard_beam_segment_height_segments_longitude |
| gt1r_freeboard_beam_segment_height_segments_height_segment_height: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_height_segments_delta_time = 0..6275] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: height of segment surface description: Mean height from along-track segment fit detremined by the sea ice algorithm(ATL07 h_si) source: Sea Ice ATBD origname: height_segment_height fullnamepath: /gt1r/freeboard_beam_segment/height_segments/height_segment_height coordinates: gt1r_freeboard_beam_segment_height_segments_delta_time gt1r_freeboard_beam_segment_height_segments_latitude gt1r_freeboard_beam_segment_height_segments_longitude |
| gt1r_freeboard_beam_segment_height_segments_height_segment_type: | Array of 16 bit Integers [gt1r_freeboard_beam_segment_height_segments_delta_time = 0..6275] units: 1 contentType: referenceInformation long_name: Segment surface type description: Value that indicates segment surface type as sea ice or different types of sea surface. 0=cloud covered: rsurf source: ATBD section 4.3 flag_meanings: cloud_covered other specular_lead_low_w_bkg specular_lead_low specular_lead_high_w_bkg specular_lead_high dark_lead_smooth_w_bkg dark_lead_smooth dark_lead_rough_w_bkg dark_lead_rough flag_values: 0 valid_min: 0 valid_max: 9 origname: height_segment_type fullnamepath: /gt1r/freeboard_beam_segment/height_segments/height_segment_type coordinates: gt1r_freeboard_beam_segment_height_segments_delta_time gt1r_freeboard_beam_segment_height_segments_latitude gt1r_freeboard_beam_segment_height_segments_longitude |
| gt1r_freeboard_beam_segment_height_segments_height_segment_confidence: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_height_segments_delta_time = 0..6275] _FillValue: 3.402823466e+38 units: 1 contentType: modelResult long_name: Surface height confidence description: Confidence level in the surface height estimate based on the number of photons; the background noise rate; and the error analysis (ATL07 h_confidence) source: Sea Ice ATBD origname: height_segment_confidence fullnamepath: /gt1r/freeboard_beam_segment/height_segments/height_segment_confidence coordinates: gt1r_freeboard_beam_segment_height_segments_delta_time gt1r_freeboard_beam_segment_height_segments_latitude gt1r_freeboard_beam_segment_height_segments_longitude |
| gt1r_freeboard_beam_segment_height_segments_asr_25: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_height_segments_delta_time = 0..6275] _FillValue: 3.402823466e+38 units: 1 contentType: modelResult long_name: Apparent surface reflectance at 25 hz description: Apparent surface reflectance at 25 hz, average to the sea ice segment source: ATL07 origname: asr_25 fullnamepath: /gt1r/freeboard_beam_segment/height_segments/asr_25 coordinates: gt1r_freeboard_beam_segment_height_segments_delta_time gt1r_freeboard_beam_segment_height_segments_latitude gt1r_freeboard_beam_segment_height_segments_longitude |
| gt1r_freeboard_beam_segment_height_segments_height_segment_w_gaussian: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_height_segments_delta_time = 0..6275] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: width of best fit gaussian description: Width of best fit gaussian (ATL07 w_gaussian) source: Sea Ice ATBD origname: height_segment_w_gaussian fullnamepath: /gt1r/freeboard_beam_segment/height_segments/height_segment_w_gaussian coordinates: gt1r_freeboard_beam_segment_height_segments_delta_time gt1r_freeboard_beam_segment_height_segments_latitude gt1r_freeboard_beam_segment_height_segments_longitude |
| gt1r_freeboard_beam_segment_height_segments_photon_rate: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_height_segments_delta_time = 0..6275] _FillValue: 3.402823466e+38 units: 1 contentType: modelResult long_name: photon rate description: Photon count rate, averaged over sea ice segment. source: ATL07 origname: photon_rate fullnamepath: /gt1r/freeboard_beam_segment/height_segments/photon_rate coordinates: gt1r_freeboard_beam_segment_height_segments_delta_time gt1r_freeboard_beam_segment_height_segments_latitude gt1r_freeboard_beam_segment_height_segments_longitude |
| gt1r_freeboard_beam_segment_height_segments_backgr_r_25: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_height_segments_delta_time = 0..6275] _FillValue: 3.402823466e+38 units: hz contentType: modelResult long_name: background rate 25 hz description: Background count rate, averaged over the segment based on 25 hz atmosphere source: ATL09 origname: backgr_r_25 fullnamepath: /gt1r/freeboard_beam_segment/height_segments/backgr_r_25 coordinates: gt1r_freeboard_beam_segment_height_segments_delta_time gt1r_freeboard_beam_segment_height_segments_latitude gt1r_freeboard_beam_segment_height_segments_longitude |
| gt1r_freeboard_beam_segment_height_segments_height_segment_rms: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_height_segments_delta_time = 0..6275] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: height rms description: RMS difference between sea ice modeled and observed photon height distribution(ATL07 h_rms) source: Sea Ice ATBD origname: height_segment_rms fullnamepath: /gt1r/freeboard_beam_segment/height_segments/height_segment_rms coordinates: gt1r_freeboard_beam_segment_height_segments_delta_time gt1r_freeboard_beam_segment_height_segments_latitude gt1r_freeboard_beam_segment_height_segments_longitude |
| gt1r_freeboard_beam_segment_beam_refsurf_interp_flag: | Array of 16 bit Integers [gt1r_freeboard_beam_segment_delta_time = 0..48] units: 1 long_name: reference surface interpolation flag description: Identifies segments with reference surface height filled through interpolation. -1 = no valid refrence surface was determined; 0= refsur computed from leads in this swath; 1 = reference surface inferred from data not in this swath; 2 = previous or next adjacent reference surface was used; 3 = filled based on the the upper height minus an offset source: ATBD section 5 flag_meanings: no_surf leads_in_swath inferred neighbor_used upper_height_minus_offset flag_values: -1, 0, 1, 2, 3 valid_min: -1 valid_max: 3 contentType: referenceInformation origname: beam_refsurf_interp_flag fullnamepath: /gt1r/freeboard_beam_segment/beam_refsurf_interp_flag coordinates: gt1r_freeboard_beam_segment_delta_time gt1r_freeboard_beam_segment_latitude gt1r_freeboard_beam_segment_longitude |
| gt1r_freeboard_beam_segment_longitude: | Array of 64 bit Reals [gt1r_freeboard_beam_segment_delta_time = 0..48] units: degrees_east contentType: referenceInformation long_name: Center longitude of freeboard swath-segment standard_name: longitude description: Center longitude of freeboard swath-segment (mean of all freeboard longitudes) source: ATBD section 5 origname: longitude fullnamepath: /gt1r/freeboard_beam_segment/longitude coordinates: gt1r_freeboard_beam_segment_delta_time gt1r_freeboard_beam_segment_latitude |
| gt1r_freeboard_beam_segment_beam_refsurf_height: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: reference surface mean description: Reference surface height -weighted combination of leads in this beam for this swath segment source: ATBD section 5 origname: beam_refsurf_height fullnamepath: /gt1r/freeboard_beam_segment/beam_refsurf_height coordinates: gt1r_freeboard_beam_segment_delta_time gt1r_freeboard_beam_segment_latitude gt1r_freeboard_beam_segment_longitude |
| gt1r_freeboard_beam_segment_latitude: | Array of 64 bit Reals [gt1r_freeboard_beam_segment_delta_time = 0..48] units: degrees_north contentType: referenceInformation long_name: Center latitude of freeboard swath-segment standard_name: latitude description: Center latitude of freeboard swath-segment (mean of all freeboard latitudes) source: ATBD section 5 origname: latitude fullnamepath: /gt1r/freeboard_beam_segment/latitude coordinates: gt1r_freeboard_beam_segment_delta_time gt1r_freeboard_beam_segment_longitude |
| gt1r_freeboard_beam_segment_beam_freeboard_height_segment_id: | Array of 32 bit Integers [gt1r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6275] units: 1 long_name: Identifier of each height segment description: Identifier of each height segment source: Sea Ice ATBD contentType: referenceInformation origname: height_segment_id fullnamepath: /gt1r/freeboard_beam_segment/beam_freeboard/height_segment_id coordinates: gt1r_freeboard_beam_segment_beam_freeboard_delta_time gt1r_freeboard_beam_segment_beam_freeboard_latitude gt1r_freeboard_beam_segment_beam_freeboard_longitude |
| gt1r_freeboard_beam_segment_beam_freeboard_beam_fb_height: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6275] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Freeboard estimate description: Estimate of the freeboard height based on the beam h reference source: ATBD section 5 origname: beam_fb_height fullnamepath: /gt1r/freeboard_beam_segment/beam_freeboard/beam_fb_height coordinates: gt1r_freeboard_beam_segment_beam_freeboard_delta_time gt1r_freeboard_beam_segment_beam_freeboard_latitude gt1r_freeboard_beam_segment_beam_freeboard_longitude |
| gt1r_freeboard_beam_segment_beam_freeboard_beam_refsur_ndx: | Array of 32 bit Integers [gt1r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6275] units: 1 contentType: referenceInformation long_name: Index to beam refsur description: 1-based index to reference surface used for this freeboard height. Its value is identical to the fbswath_ndx. This index also idenifies the swath segment with which the beam freeboard associated. source: ATBD section 5 origname: beam_refsur_ndx fullnamepath: /gt1r/freeboard_beam_segment/beam_freeboard/beam_refsur_ndx coordinates: gt1r_freeboard_beam_segment_beam_freeboard_delta_time gt1r_freeboard_beam_segment_beam_freeboard_latitude gt1r_freeboard_beam_segment_beam_freeboard_longitude |
| gt1r_freeboard_beam_segment_beam_freeboard_seg_dist_x: | Array of 64 bit Reals [gt1r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6275] units: meters contentType: physicalMeasurement long_name: Along Track Distance description: Along-track distance from the equator crossing to the segment center. source: Sea Ice ATBD origname: seg_dist_x fullnamepath: /gt1r/freeboard_beam_segment/beam_freeboard/seg_dist_x coordinates: gt1r_freeboard_beam_segment_beam_freeboard_delta_time gt1r_freeboard_beam_segment_beam_freeboard_latitude gt1r_freeboard_beam_segment_beam_freeboard_longitude |
| gt1r_freeboard_beam_segment_beam_freeboard_longitude: | Array of 64 bit Reals [gt1r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6275] units: degrees_east contentType: referenceInformation long_name: Longitude standard_name: longitude description: Longitude, WGS84, East=+,Lon of segment center source: Sea Ice ATBD valid_min: -180.00000000000000 valid_max: 180.00000000000000 origname: longitude fullnamepath: /gt1r/freeboard_beam_segment/beam_freeboard/longitude coordinates: gt1r_freeboard_beam_segment_beam_freeboard_delta_time gt1r_freeboard_beam_segment_beam_freeboard_latitude |
| gt1r_freeboard_beam_segment_beam_freeboard_latitude: | Array of 64 bit Reals [gt1r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6275] units: degrees_north contentType: referenceInformation long_name: Latitude standard_name: latitude description: Latitude, WGS84, North=+, Lat of segment center source: Sea Ice ATBD valid_min: -90.000000000000000 valid_max: 90.000000000000000 origname: latitude fullnamepath: /gt1r/freeboard_beam_segment/beam_freeboard/latitude coordinates: gt1r_freeboard_beam_segment_beam_freeboard_delta_time gt1r_freeboard_beam_segment_beam_freeboard_longitude |
| gt1r_freeboard_beam_segment_beam_freeboard_geoseg_beg: | Array of 32 bit Integers [gt1r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6275] units: 1 contentType: referenceInformation long_name: Beginning GEOSEG description: Geolocation segment (geoseg) ID associated with the first photon used in this sea ice segment source: Sea Ice ATBD origname: geoseg_beg fullnamepath: /gt1r/freeboard_beam_segment/beam_freeboard/geoseg_beg coordinates: gt1r_freeboard_beam_segment_beam_freeboard_delta_time gt1r_freeboard_beam_segment_beam_freeboard_latitude gt1r_freeboard_beam_segment_beam_freeboard_longitude |
| gt1r_freeboard_beam_segment_beam_freeboard_beam_fb_confidence: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6275] _FillValue: 3.402823466e+38 units: 1 contentType: referenceInformation long_name: Freeboard confidence description: Confidence level in the freeboard estimate source: ATBD section 5 origname: beam_fb_confidence fullnamepath: /gt1r/freeboard_beam_segment/beam_freeboard/beam_fb_confidence coordinates: gt1r_freeboard_beam_segment_beam_freeboard_delta_time gt1r_freeboard_beam_segment_beam_freeboard_latitude gt1r_freeboard_beam_segment_beam_freeboard_longitude |
| gt1r_freeboard_beam_segment_beam_freeboard_beam_fb_sigma: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6275] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Freeboard sigma estimate description: estimate of the sigma ( standard deviation) for each beam freeboard height source: ATBD section 5 origname: beam_fb_sigma fullnamepath: /gt1r/freeboard_beam_segment/beam_freeboard/beam_fb_sigma coordinates: gt1r_freeboard_beam_segment_beam_freeboard_delta_time gt1r_freeboard_beam_segment_beam_freeboard_latitude gt1r_freeboard_beam_segment_beam_freeboard_longitude |
| gt1r_freeboard_beam_segment_beam_freeboard_geoseg_end: | Array of 32 bit Integers [gt1r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6275] units: 1 contentType: referenceInformation long_name: Ending GEOSEG description: Geolocation segment (geoseg) ID associated with the last photon used in this sea ice segment source: Sea Ice ATBD origname: geoseg_end fullnamepath: /gt1r/freeboard_beam_segment/beam_freeboard/geoseg_end coordinates: gt1r_freeboard_beam_segment_beam_freeboard_delta_time gt1r_freeboard_beam_segment_beam_freeboard_latitude gt1r_freeboard_beam_segment_beam_freeboard_longitude |
| gt1r_freeboard_beam_segment_beam_freeboard_beam_fb_quality_flag: | Array of 16 bit Integers [gt1r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6275] units: 1 contentType: referenceInformation long_name: Flag describing the quality of the freeboard estimate description: Flag describing the quality of the results of the along-track fit. (-1=height value is invalid; 1=ngrid_w < wlength/2; 2=ngrid_w >= wlength/2; 3=ngrid_dt < dtlength/2; 4=ngrid_dt >= dtlength/2; 5=ngrid_dt >= (dtlength-2): where 1 is best and 5 is poor). source: ATBD section 5 flag_meanings: invalid best high med low poor flag_values: -1, 1, 2, 3, 4, 5 valid_min: -1 valid_max: 5 origname: beam_fb_quality_flag fullnamepath: /gt1r/freeboard_beam_segment/beam_freeboard/beam_fb_quality_flag coordinates: gt1r_freeboard_beam_segment_beam_freeboard_delta_time gt1r_freeboard_beam_segment_beam_freeboard_latitude gt1r_freeboard_beam_segment_beam_freeboard_longitude |
| gt1r_freeboard_beam_segment_beam_fb_length: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Length ofbeam freeboard swath-segment description: Length of freeboard beam-segment source: ATBD section 5 origname: beam_fb_length fullnamepath: /gt1r/freeboard_beam_segment/beam_fb_length coordinates: gt1r_freeboard_beam_segment_delta_time gt1r_freeboard_beam_segment_latitude gt1r_freeboard_beam_segment_longitude |
| gt1r_freeboard_beam_segment_beam_fb_hist: | Array of 16 bit Integers [gt1r_freeboard_beam_segment_delta_time = 0..48][gt1r_freeboard_beam_segment_ds_si_hist_bins = 0..160] units: 1 contentType: referenceInformation long_name: Beam freeboard histogram description: Beam Freeboard (using beam fbswath reference surface height) histogram (distribution) for this freeboard beam-segment source: ATBD section 5 origname: beam_fb_hist fullnamepath: /gt1r/freeboard_beam_segment/beam_fb_hist coordinates: gt1r_freeboard_beam_segment_delta_time gt1r_freeboard_beam_segment_latitude gt1r_freeboard_beam_segment_longitude |
| gt1r_freeboard_beam_segment_geophysical_height_segment_dac: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_geophysical_delta_time = 0..6275] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: Dynamic Atmosphere Correction description: Dynamic Atmospheric Correction (DAC) includes inverted barometer (IB) effect (From ATL07) source: Sea Ice ATBD origname: height_segment_dac fullnamepath: /gt1r/freeboard_beam_segment/geophysical/height_segment_dac coordinates: gt1r_freeboard_beam_segment_geophysical_delta_time gt1r_freeboard_beam_segment_geophysical_latitude gt1r_freeboard_beam_segment_geophysical_longitude |
| gt1r_freeboard_beam_segment_geophysical_height_segment_tide_pole: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_geophysical_delta_time = 0..6275] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: Pole Tide description: Pole Tide -Rotational deformation due to polar motion (-1.5 to 1.5 cm). (From ATL07) source: Sea Ice ATBD origname: height_segment_tide_pole fullnamepath: /gt1r/freeboard_beam_segment/geophysical/height_segment_tide_pole coordinates: gt1r_freeboard_beam_segment_geophysical_delta_time gt1r_freeboard_beam_segment_geophysical_latitude gt1r_freeboard_beam_segment_geophysical_longitude |
| gt1r_freeboard_beam_segment_geophysical_longitude: | Array of 64 bit Reals [gt1r_freeboard_beam_segment_geophysical_delta_time = 0..6275] units: degrees_east contentType: referenceInformation long_name: Longitude standard_name: longitude description: Longitude, WGS84, East=+,Lon of segment center source: Sea Ice ATBD valid_min: -180.00000000000000 valid_max: 180.00000000000000 origname: longitude fullnamepath: /gt1r/freeboard_beam_segment/geophysical/longitude coordinates: gt1r_freeboard_beam_segment_geophysical_delta_time gt1r_freeboard_beam_segment_geophysical_latitude |
| gt1r_freeboard_beam_segment_geophysical_latitude: | Array of 64 bit Reals [gt1r_freeboard_beam_segment_geophysical_delta_time = 0..6275] units: degrees_north long_name: Latitude standard_name: latitude description: Latitude, WGS84, North=+, Lat of segment center source: Sea Ice ATBD valid_min: -90.000000000000000 valid_max: 90.000000000000000 contentType: referenceInformation origname: latitude fullnamepath: /gt1r/freeboard_beam_segment/geophysical/latitude coordinates: gt1r_freeboard_beam_segment_geophysical_delta_time gt1r_freeboard_beam_segment_geophysical_longitude |
| gt1r_freeboard_beam_segment_geophysical_height_segment_load: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_geophysical_delta_time = 0..6275] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: Load Tide description: Load Tide - Local displacement due to Ocean Loading (-6 to 0 cm).(From ATL07) source: Sea Ice ATBD origname: height_segment_load fullnamepath: /gt1r/freeboard_beam_segment/geophysical/height_segment_load coordinates: gt1r_freeboard_beam_segment_geophysical_delta_time gt1r_freeboard_beam_segment_geophysical_latitude gt1r_freeboard_beam_segment_geophysical_longitude |
| gt1r_freeboard_beam_segment_geophysical_height_segment_geoid: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_geophysical_delta_time = 0..6275] contentType: referenceInformation long_name: EGM2008 Geoid description: Geoid height above WGS-84 reference ellipsoid (range -107 to 86m), based on the EGM2008 model.(From ATL07) source: Sea Ice ATBD _FillValue: 3.402823466e+38 units: meters origname: height_segment_geoid fullnamepath: /gt1r/freeboard_beam_segment/geophysical/height_segment_geoid coordinates: gt1r_freeboard_beam_segment_geophysical_delta_time gt1r_freeboard_beam_segment_geophysical_latitude gt1r_freeboard_beam_segment_geophysical_longitude |
| gt1r_freeboard_beam_segment_geophysical_height_segment_ocean: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_geophysical_delta_time = 0..6275] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: Ocean Tide description: Ocean Tides including diurnal and semi-diurnal (harmonic analysis), and longer period tides (dynamic and self-consistent equilibrium) (From ATL07) source: Sea Ice ATBD origname: height_segment_ocean fullnamepath: /gt1r/freeboard_beam_segment/geophysical/height_segment_ocean coordinates: gt1r_freeboard_beam_segment_geophysical_delta_time gt1r_freeboard_beam_segment_geophysical_latitude gt1r_freeboard_beam_segment_geophysical_longitude |
| gt1r_freeboard_beam_segment_geophysical_height_segment_mss: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_geophysical_delta_time = 0..6275] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: Mean Sea Surface description: Mean sea surface height above WGS-84 reference ellipsoid. (From ATL07, includes tide-free geoid and mean dynamic topography source: Sea Ice ATBD origname: height_segment_mss fullnamepath: /gt1r/freeboard_beam_segment/geophysical/height_segment_mss coordinates: gt1r_freeboard_beam_segment_geophysical_delta_time gt1r_freeboard_beam_segment_geophysical_latitude gt1r_freeboard_beam_segment_geophysical_longitude |
| gt1r_freeboard_beam_segment_geophysical_height_segment_earth: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_geophysical_delta_time = 0..6275] contentType: referenceInformation long_name: Earth Tide description: Solid Earth Tide(From ATL07) source: Sea Ice ATBD _FillValue: 3.402823466e+38 units: meters origname: height_segment_earth fullnamepath: /gt1r/freeboard_beam_segment/geophysical/height_segment_earth coordinates: gt1r_freeboard_beam_segment_geophysical_delta_time gt1r_freeboard_beam_segment_geophysical_latitude gt1r_freeboard_beam_segment_geophysical_longitude |
| gt1r_freeboard_beam_segment_fbswath_ndx: | Array of 32 bit Integers [gt1r_freeboard_beam_segment_delta_time = 0..48] units: 1 contentType: referenceInformation long_name: Index to freeboard swath segment description: The 1-based fbswath_nx identifies the swath associated with each element. There are the same number of elements in the group /freeboard_swath_segment and in each of the /GTx/freeboard_beam_segment groups. The fbswath_nx identifies the fbswath_refsurf_height used to compute the fbswath_fb_height. It is the same index number that idenitifies the beam_refsurf_height to its swath and the beam_refsurf_height used to computed the beam_fb_height. source: ATBD section 5 origname: fbswath_ndx fullnamepath: /gt1r/freeboard_beam_segment/fbswath_ndx coordinates: gt1r_freeboard_beam_segment_delta_time gt1r_freeboard_beam_segment_latitude gt1r_freeboard_beam_segment_longitude |
| gt1r_freeboard_beam_segment_beam_fb_sigma: | Array of 32 bit Reals [gt1r_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Beam Freeboard standard deviation swath-segment description: Freeboard standard deviation of the height-segments in freeboard beam-segment source: ATBD section 5 origname: beam_fb_sigma fullnamepath: /gt1r/freeboard_beam_segment/beam_fb_sigma coordinates: gt1r_freeboard_beam_segment_delta_time gt1r_freeboard_beam_segment_latitude gt1r_freeboard_beam_segment_longitude |
| gt1r_freeboard_beam_segment_beam_lead_n: | Array of 32 bit Integers [gt1r_freeboard_beam_segment_delta_time = 0..48] units: 1 contentType: referenceInformation long_name: Number of leads description: Number of leads used for this beam reference surface source: Sea Ice ATBD origname: beam_lead_n fullnamepath: /gt1r/freeboard_beam_segment/beam_lead_n coordinates: gt1r_freeboard_beam_segment_delta_time gt1r_freeboard_beam_segment_latitude gt1r_freeboard_beam_segment_longitude |
| gt1r_leads_lead_height: | Array of 32 bit Reals [gt1r_leads_delta_time = 0..44] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Lead height description: Lead height - weighted mean of consective sea surface heights used for this lead source: ATBD section 5 origname: lead_height fullnamepath: /gt1r/leads/lead_height coordinates: gt1r_leads_delta_time gt1r_leads_latitude gt1r_leads_longitude |
| gt1r_leads_lead_length: | Array of 32 bit Reals [gt1r_leads_delta_time = 0..44] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Lead size description: Along-track length of this lead source: ATBD section 5 origname: lead_length fullnamepath: /gt1r/leads/lead_length coordinates: gt1r_leads_delta_time gt1r_leads_latitude gt1r_leads_longitude |
| gt1r_leads_lead_sigma: | Array of 32 bit Reals [gt1r_leads_delta_time = 0..44] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Lead sigma estimate description: Lead height sigma (standard deviation) estimate - weighted combination of sea surface height sigmas used as leads in this beam for this swath segment source: ATBD section 5 origname: lead_sigma fullnamepath: /gt1r/leads/lead_sigma coordinates: gt1r_leads_delta_time gt1r_leads_latitude gt1r_leads_longitude |
| gt1r_leads_longitude: | Array of 64 bit Reals [gt1r_leads_delta_time = 0..44] units: degrees_east contentType: referenceInformation long_name: Center longitude of lead standard_name: longitude description: Center longitude of lead (mean of all freeboard longitudes) source: ATBD section 5 origname: longitude fullnamepath: /gt1r/leads/longitude coordinates: gt1r_leads_delta_time gt1r_leads_latitude |
| gt1r_leads_latitude: | Array of 64 bit Reals [gt1r_leads_delta_time = 0..44] units: degrees_north contentType: referenceInformation long_name: Center latitude of lead standard_name: latitude description: Center latitude of lead (mean of all sea surface height latitudes) source: ATBD section 5 origname: latitude fullnamepath: /gt1r/leads/latitude coordinates: gt1r_leads_delta_time gt1r_leads_longitude |
| gt1r_leads_ssh_n: | Array of 32 bit Integers [gt1r_leads_delta_time = 0..44] units: 1 contentType: referenceInformation long_name: number of sea surface references description: Number of sea surface height segments used for this lead source: ATBD section 5 origname: ssh_n fullnamepath: /gt1r/leads/ssh_n coordinates: gt1r_leads_delta_time gt1r_leads_latitude gt1r_leads_longitude |
| gt1r_leads_ssh_ndx: | Array of 32 bit Integers [gt1r_leads_delta_time = 0..44] units: 1 contentType: referenceInformation long_name: index first sea surface description: 1-based index to the first freeboard element (i.e.first sea surface height segment) used for this lead source: Sea Ice ATBD origname: ssh_ndx fullnamepath: /gt1r/leads/ssh_ndx coordinates: gt1r_leads_delta_time gt1r_leads_latitude gt1r_leads_longitude |
| gt2r_freeboard_beam_segment_beam_refsurf_sigma: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: reference surface sigma description: Reference surface height sigma (standard devaition) - weighted combination of lead sigmas in this beam for this swath segment source: ATBD section 5 origname: beam_refsurf_sigma fullnamepath: /gt2r/freeboard_beam_segment/beam_refsurf_sigma coordinates: gt2r_freeboard_beam_segment_delta_time gt2r_freeboard_beam_segment_latitude gt2r_freeboard_beam_segment_longitude |
| gt2r_freeboard_beam_segment_beam_refsurf_alongtrack_slope: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: degrees contentType: modelResult long_name: reference surface along track slope description: Reference surface height along track slope source: ATBD section 5 origname: beam_refsurf_alongtrack_slope fullnamepath: /gt2r/freeboard_beam_segment/beam_refsurf_alongtrack_slope coordinates: gt2r_freeboard_beam_segment_delta_time gt2r_freeboard_beam_segment_latitude gt2r_freeboard_beam_segment_longitude |
| gt2r_freeboard_beam_segment_beam_lead_ndx: | Array of 32 bit Integers [gt2r_freeboard_beam_segment_delta_time = 0..48] units: 1 contentType: referenceInformation long_name: index first lead description: 1-based index to the first /GTx/leads lead used for this beam's reference surface. source: Sea Ice ATBD origname: beam_lead_ndx fullnamepath: /gt2r/freeboard_beam_segment/beam_lead_ndx coordinates: gt2r_freeboard_beam_segment_delta_time gt2r_freeboard_beam_segment_latitude gt2r_freeboard_beam_segment_longitude |
| gt2r_freeboard_beam_segment_beam_fb_height: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Beam Freeboard mean swath-segment description: Mean of the Freeboard height-segments in freeboard beam-segment source: ATBD section 5 origname: beam_fb_height fullnamepath: /gt2r/freeboard_beam_segment/beam_fb_height coordinates: gt2r_freeboard_beam_segment_delta_time gt2r_freeboard_beam_segment_latitude gt2r_freeboard_beam_segment_longitude |
| gt2r_freeboard_beam_segment_height_segments_msw_flag: | Array of 16 bit Integers [gt2r_freeboard_beam_segment_height_segments_delta_time = 0..6785] units: 1 contentType: modelResult long_name: multiple scattering warning flag description: Multiple Scattering warning flag. The multiple scattering warning flag (ATL09 parameter msw_flag) has values from -1 to 5 where zero means no multiple scattering and 5 the greatest. If no layers were detected, then msw_flag = 0. If blowing snow is detected and its estimated optical depth is greater than or equal to 0.5, then msw_flag = 5. If the blowing snow optical depth is less than 0.5, then msw_flag = 4. If no blowing snow is detected but there are cloud or aerosol layers detected, the msw_flag assumes values of 1 to 3 based on the height of the bottom of the lowest layer: < 1 km, msw_flag = 3; 1-3 km, msw_flag = 2; > 3km, msw_flag = 1. A value of -1 indicates that the signal to noise of the data was too low to reliably ascertain the presence of cloud or blowing snow. We expect values of -1 to occur only during daylight. source: ATL09 flag_meanings: cannot_determine no_layers layer_gt_3km layer_between_1_and_3_km layer_lt_1km blow_snow_od_lt_0.5 blow_snow_od_gt_0.5 flag_values: -1, 0, 1, 2, 3, 4, 5 valid_min: -1 valid_max: 5 origname: msw_flag fullnamepath: /gt2r/freeboard_beam_segment/height_segments/msw_flag coordinates: gt2r_freeboard_beam_segment_height_segments_delta_time gt2r_freeboard_beam_segment_height_segments_latitude gt2r_freeboard_beam_segment_height_segments_longitude |
| gt2r_freeboard_beam_segment_height_segments_cloud_flag_atm: | Array of 16 bit Integers [gt2r_freeboard_beam_segment_height_segments_delta_time = 0..6785] units: 1 long_name: cloud flag atm contentType: modelResult description: Number of layers found from the backscatter profile using the DDA layer finder source: ATL09 valid_min: 0 valid_max: 10 origname: cloud_flag_atm fullnamepath: /gt2r/freeboard_beam_segment/height_segments/cloud_flag_atm coordinates: gt2r_freeboard_beam_segment_height_segments_delta_time gt2r_freeboard_beam_segment_height_segments_latitude gt2r_freeboard_beam_segment_height_segments_longitude |
| gt2r_freeboard_beam_segment_height_segments_height_segment_length_seg: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_height_segments_delta_time = 0..6785] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: length of segment description: Along-track length of segment containing n_photons_actual ATL07 length_seg) source: Sea Ice ATBD origname: height_segment_length_seg fullnamepath: /gt2r/freeboard_beam_segment/height_segments/height_segment_length_seg coordinates: gt2r_freeboard_beam_segment_height_segments_delta_time gt2r_freeboard_beam_segment_height_segments_latitude gt2r_freeboard_beam_segment_height_segments_longitude |
| gt2r_freeboard_beam_segment_height_segments_height_segment_ib: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_height_segments_delta_time = 0..6785] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: inverted barometer effect description: Inverted barometer effect calculated from surface pressure source: ATBD section 4.2 origname: height_segment_ib fullnamepath: /gt2r/freeboard_beam_segment/height_segments/height_segment_ib coordinates: gt2r_freeboard_beam_segment_height_segments_delta_time gt2r_freeboard_beam_segment_height_segments_latitude gt2r_freeboard_beam_segment_height_segments_longitude |
| gt2r_freeboard_beam_segment_height_segments_bsnow_con: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_height_segments_delta_time = 0..6785] _FillValue: 3.402823466e+38 units: 1 contentType: modelResult long_name: Blowing snow confidence description: Blowing snow confidence source: ATL09 origname: bsnow_con fullnamepath: /gt2r/freeboard_beam_segment/height_segments/bsnow_con coordinates: gt2r_freeboard_beam_segment_height_segments_delta_time gt2r_freeboard_beam_segment_height_segments_latitude gt2r_freeboard_beam_segment_height_segments_longitude |
| gt2r_freeboard_beam_segment_height_segments_layer_flag: | Array of 16 bit Integers [gt2r_freeboard_beam_segment_height_segments_delta_time = 0..6785] units: 1 contentType: modelResult long_name: consolidated cloud flag description: This flag is a combination of multiple flags (cloud_flag_atm, cloud_flag_asr, and bsnow_con) and takes daytime/nighttime into consideration. A value of 1 means clouds or blowing snow are likely present. A value of 0 indicates the likely absence of clouds or blowing snow. source: ATL09 flag_meanings: likely_clear likely_cloudy flag_values: 0, 1 valid_min: 0 valid_max: 1 origname: layer_flag fullnamepath: /gt2r/freeboard_beam_segment/height_segments/layer_flag coordinates: gt2r_freeboard_beam_segment_height_segments_delta_time gt2r_freeboard_beam_segment_height_segments_latitude gt2r_freeboard_beam_segment_height_segments_longitude |
| gt2r_freeboard_beam_segment_height_segments_backgr_calc: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_height_segments_delta_time = 0..6785] _FillValue: 3.402823466e+38 units: hz contentType: modelResult long_name: background count rate calculated description: Calculated background count rate based on sun angle, surface slope, unit reflectance source: ATL07 origname: backgr_calc fullnamepath: /gt2r/freeboard_beam_segment/height_segments/backgr_calc coordinates: gt2r_freeboard_beam_segment_height_segments_delta_time gt2r_freeboard_beam_segment_height_segments_latitude gt2r_freeboard_beam_segment_height_segments_longitude |
| gt2r_freeboard_beam_segment_height_segments_bsnow_h: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_height_segments_delta_time = 0..6785] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Blowing snow top height description: Blowing snow layer top height source: ATL09 origname: bsnow_h fullnamepath: /gt2r/freeboard_beam_segment/height_segments/bsnow_h coordinates: gt2r_freeboard_beam_segment_height_segments_delta_time gt2r_freeboard_beam_segment_height_segments_latitude gt2r_freeboard_beam_segment_height_segments_longitude |
| gt2r_freeboard_beam_segment_height_segments_longitude: | Array of 64 bit Reals [gt2r_freeboard_beam_segment_height_segments_delta_time = 0..6785] units: degrees_east contentType: referenceInformation long_name: Longitude standard_name: longitude description: Longitude, WGS84, East=+,Lon of segment center source: Sea Ice ATBD valid_min: -180.00000000000000 valid_max: 180.00000000000000 origname: longitude fullnamepath: /gt2r/freeboard_beam_segment/height_segments/longitude coordinates: gt2r_freeboard_beam_segment_height_segments_delta_time gt2r_freeboard_beam_segment_height_segments_latitude |
| gt2r_freeboard_beam_segment_height_segments_background_r_norm: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_height_segments_delta_time = 0..6785] _FillValue: 3.402823466e+38 units: hz contentType: modelResult long_name: normalized background (50 shot) description: Background rate normalized to a fixed solar elevation angle source: ATL07 origname: background_r_norm fullnamepath: /gt2r/freeboard_beam_segment/height_segments/background_r_norm coordinates: gt2r_freeboard_beam_segment_height_segments_delta_time gt2r_freeboard_beam_segment_height_segments_latitude gt2r_freeboard_beam_segment_height_segments_longitude |
| gt2r_freeboard_beam_segment_height_segments_latitude: | Array of 64 bit Reals [gt2r_freeboard_beam_segment_height_segments_delta_time = 0..6785] units: degrees_north contentType: referenceInformation long_name: Latitude standard_name: latitude description: Latitude, WGS84, North=+, Lat of segment center source: Sea Ice ATBD valid_min: -90.000000000000000 valid_max: 90.000000000000000 origname: latitude fullnamepath: /gt2r/freeboard_beam_segment/height_segments/latitude coordinates: gt2r_freeboard_beam_segment_height_segments_delta_time gt2r_freeboard_beam_segment_height_segments_longitude |
| gt2r_freeboard_beam_segment_height_segments_ice_conc: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_height_segments_delta_time = 0..6785] _FillValue: 3.402823466e+38 units: 1 contentType: modelResult long_name: sea ice concentration description: Sea ice concentration percentage source: ATL07/ANC31 origname: ice_conc fullnamepath: /gt2r/freeboard_beam_segment/height_segments/ice_conc coordinates: gt2r_freeboard_beam_segment_height_segments_delta_time gt2r_freeboard_beam_segment_height_segments_latitude gt2r_freeboard_beam_segment_height_segments_longitude |
| gt2r_freeboard_beam_segment_height_segments_cloud_flag_asr: | Array of 16 bit Integers [gt2r_freeboard_beam_segment_height_segments_delta_time = 0..6785] units: 1 contentType: modelResult long_name: cloud flag asr description: Cloud flag (probability) from apparent surface reflectance. 0=clear with high confidence; 1=clear with medium confidence; 2=clear with low confidence; 3=cloudy with low confidence; 4=cloudy with medium confidence; 5=cloudy with high confidence; 6=unknown source: ATL09 flag_meanings: clear_with_high_confidence clear_with_medium_confidence clear_with_low_confidence cloudy_with_low_confidence cloudy_with_medium_confidence cloudy_with_high_confidence unknown flag_values: 0, 1, 2, 3, 4, 5, 6 valid_min: 0 valid_max: 6 origname: cloud_flag_asr fullnamepath: /gt2r/freeboard_beam_segment/height_segments/cloud_flag_asr coordinates: gt2r_freeboard_beam_segment_height_segments_delta_time gt2r_freeboard_beam_segment_height_segments_latitude gt2r_freeboard_beam_segment_height_segments_longitude |
| gt2r_freeboard_beam_segment_height_segments_height_segment_ssh_flag: | Array of 16 bit Integers [gt2r_freeboard_beam_segment_height_segments_delta_time = 0..6785] units: 1 contentType: referenceInformation long_name: Sea Surface Height Flag description: Identifiesthe height segments that are candidates for use as sea surface reference in freeboard calculations in ATL10. The flags are set as follows: 0 = sea ice; 1 = sea surface source: Sea Ice ATBD flag_meanings: sea_ice ice_surface flag_values: 0, 1 valid_min: 0 valid_max: 1 origname: height_segment_ssh_flag fullnamepath: /gt2r/freeboard_beam_segment/height_segments/height_segment_ssh_flag coordinates: gt2r_freeboard_beam_segment_height_segments_delta_time gt2r_freeboard_beam_segment_height_segments_latitude gt2r_freeboard_beam_segment_height_segments_longitude |
| gt2r_freeboard_beam_segment_height_segments_height_segment_surf_sigma: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_height_segments_delta_time = 0..6785] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: h surface sigma description: Sigma (standard deviation) estimate of the surface height (ATL07 h_surface_error) source: Sea Ice ATBD origname: height_segment_surf_sigma fullnamepath: /gt2r/freeboard_beam_segment/height_segments/height_segment_surf_sigma coordinates: gt2r_freeboard_beam_segment_height_segments_delta_time gt2r_freeboard_beam_segment_height_segments_latitude gt2r_freeboard_beam_segment_height_segments_longitude |
| gt2r_freeboard_beam_segment_height_segments_backgr_r_200: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_height_segments_delta_time = 0..6785] _FillValue: 3.402823466e+38 units: hz contentType: modelResult long_name: background rate 200 hz description: Background count rate, averaged over the segment based on ATLAS 50 pulse counts source: ATL09 origname: backgr_r_200 fullnamepath: /gt2r/freeboard_beam_segment/height_segments/backgr_r_200 coordinates: gt2r_freeboard_beam_segment_height_segments_delta_time gt2r_freeboard_beam_segment_height_segments_latitude gt2r_freeboard_beam_segment_height_segments_longitude |
| gt2r_freeboard_beam_segment_height_segments_height_segment_height: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_height_segments_delta_time = 0..6785] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: height of segment surface description: Mean height from along-track segment fit detremined by the sea ice algorithm(ATL07 h_si) source: Sea Ice ATBD origname: height_segment_height fullnamepath: /gt2r/freeboard_beam_segment/height_segments/height_segment_height coordinates: gt2r_freeboard_beam_segment_height_segments_delta_time gt2r_freeboard_beam_segment_height_segments_latitude gt2r_freeboard_beam_segment_height_segments_longitude |
| gt2r_freeboard_beam_segment_height_segments_height_segment_type: | Array of 16 bit Integers [gt2r_freeboard_beam_segment_height_segments_delta_time = 0..6785] units: 1 contentType: referenceInformation long_name: Segment surface type description: Value that indicates segment surface type as sea ice or different types of sea surface. 0=cloud covered: rsurf source: ATBD section 4.3 flag_meanings: cloud_covered other specular_lead_low_w_bkg specular_lead_low specular_lead_high_w_bkg specular_lead_high dark_lead_smooth_w_bkg dark_lead_smooth dark_lead_rough_w_bkg dark_lead_rough flag_values: 0 valid_min: 0 valid_max: 9 origname: height_segment_type fullnamepath: /gt2r/freeboard_beam_segment/height_segments/height_segment_type coordinates: gt2r_freeboard_beam_segment_height_segments_delta_time gt2r_freeboard_beam_segment_height_segments_latitude gt2r_freeboard_beam_segment_height_segments_longitude |
| gt2r_freeboard_beam_segment_height_segments_height_segment_confidence: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_height_segments_delta_time = 0..6785] _FillValue: 3.402823466e+38 units: 1 contentType: modelResult long_name: Surface height confidence description: Confidence level in the surface height estimate based on the number of photons; the background noise rate; and the error analysis (ATL07 h_confidence) source: Sea Ice ATBD origname: height_segment_confidence fullnamepath: /gt2r/freeboard_beam_segment/height_segments/height_segment_confidence coordinates: gt2r_freeboard_beam_segment_height_segments_delta_time gt2r_freeboard_beam_segment_height_segments_latitude gt2r_freeboard_beam_segment_height_segments_longitude |
| gt2r_freeboard_beam_segment_height_segments_asr_25: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_height_segments_delta_time = 0..6785] _FillValue: 3.402823466e+38 units: 1 contentType: modelResult long_name: Apparent surface reflectance at 25 hz description: Apparent surface reflectance at 25 hz, average to the sea ice segment source: ATL07 origname: asr_25 fullnamepath: /gt2r/freeboard_beam_segment/height_segments/asr_25 coordinates: gt2r_freeboard_beam_segment_height_segments_delta_time gt2r_freeboard_beam_segment_height_segments_latitude gt2r_freeboard_beam_segment_height_segments_longitude |
| gt2r_freeboard_beam_segment_height_segments_height_segment_w_gaussian: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_height_segments_delta_time = 0..6785] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: width of best fit gaussian description: Width of best fit gaussian (ATL07 w_gaussian) source: Sea Ice ATBD origname: height_segment_w_gaussian fullnamepath: /gt2r/freeboard_beam_segment/height_segments/height_segment_w_gaussian coordinates: gt2r_freeboard_beam_segment_height_segments_delta_time gt2r_freeboard_beam_segment_height_segments_latitude gt2r_freeboard_beam_segment_height_segments_longitude |
| gt2r_freeboard_beam_segment_height_segments_photon_rate: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_height_segments_delta_time = 0..6785] _FillValue: 3.402823466e+38 units: 1 contentType: modelResult long_name: photon rate description: Photon count rate, averaged over sea ice segment. source: ATL07 origname: photon_rate fullnamepath: /gt2r/freeboard_beam_segment/height_segments/photon_rate coordinates: gt2r_freeboard_beam_segment_height_segments_delta_time gt2r_freeboard_beam_segment_height_segments_latitude gt2r_freeboard_beam_segment_height_segments_longitude |
| gt2r_freeboard_beam_segment_height_segments_backgr_r_25: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_height_segments_delta_time = 0..6785] _FillValue: 3.402823466e+38 units: hz contentType: modelResult long_name: background rate 25 hz description: Background count rate, averaged over the segment based on 25 hz atmosphere source: ATL09 origname: backgr_r_25 fullnamepath: /gt2r/freeboard_beam_segment/height_segments/backgr_r_25 coordinates: gt2r_freeboard_beam_segment_height_segments_delta_time gt2r_freeboard_beam_segment_height_segments_latitude gt2r_freeboard_beam_segment_height_segments_longitude |
| gt2r_freeboard_beam_segment_height_segments_height_segment_rms: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_height_segments_delta_time = 0..6785] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: height rms description: RMS difference between sea ice modeled and observed photon height distribution(ATL07 h_rms) source: Sea Ice ATBD origname: height_segment_rms fullnamepath: /gt2r/freeboard_beam_segment/height_segments/height_segment_rms coordinates: gt2r_freeboard_beam_segment_height_segments_delta_time gt2r_freeboard_beam_segment_height_segments_latitude gt2r_freeboard_beam_segment_height_segments_longitude |
| gt2r_freeboard_beam_segment_beam_refsurf_interp_flag: | Array of 16 bit Integers [gt2r_freeboard_beam_segment_delta_time = 0..48] units: 1 long_name: reference surface interpolation flag description: Identifies segments with reference surface height filled through interpolation. -1 = no valid refrence surface was determined; 0= refsur computed from leads in this swath; 1 = reference surface inferred from data not in this swath; 2 = previous or next adjacent reference surface was used; 3 = filled based on the the upper height minus an offset source: ATBD section 5 flag_meanings: no_surf leads_in_swath inferred neighbor_used upper_height_minus_offset flag_values: -1, 0, 1, 2, 3 valid_min: -1 valid_max: 3 contentType: referenceInformation origname: beam_refsurf_interp_flag fullnamepath: /gt2r/freeboard_beam_segment/beam_refsurf_interp_flag coordinates: gt2r_freeboard_beam_segment_delta_time gt2r_freeboard_beam_segment_latitude gt2r_freeboard_beam_segment_longitude |
| gt2r_freeboard_beam_segment_longitude: | Array of 64 bit Reals [gt2r_freeboard_beam_segment_delta_time = 0..48] units: degrees_east contentType: referenceInformation long_name: Center longitude of freeboard swath-segment standard_name: longitude description: Center longitude of freeboard swath-segment (mean of all freeboard longitudes) source: ATBD section 5 origname: longitude fullnamepath: /gt2r/freeboard_beam_segment/longitude coordinates: gt2r_freeboard_beam_segment_delta_time gt2r_freeboard_beam_segment_latitude |
| gt2r_freeboard_beam_segment_beam_refsurf_height: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: reference surface mean description: Reference surface height -weighted combination of leads in this beam for this swath segment source: ATBD section 5 origname: beam_refsurf_height fullnamepath: /gt2r/freeboard_beam_segment/beam_refsurf_height coordinates: gt2r_freeboard_beam_segment_delta_time gt2r_freeboard_beam_segment_latitude gt2r_freeboard_beam_segment_longitude |
| gt2r_freeboard_beam_segment_latitude: | Array of 64 bit Reals [gt2r_freeboard_beam_segment_delta_time = 0..48] units: degrees_north contentType: referenceInformation long_name: Center latitude of freeboard swath-segment standard_name: latitude description: Center latitude of freeboard swath-segment (mean of all freeboard latitudes) source: ATBD section 5 origname: latitude fullnamepath: /gt2r/freeboard_beam_segment/latitude coordinates: gt2r_freeboard_beam_segment_delta_time gt2r_freeboard_beam_segment_longitude |
| gt2r_freeboard_beam_segment_beam_freeboard_height_segment_id: | Array of 32 bit Integers [gt2r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6785] units: 1 long_name: Identifier of each height segment description: Identifier of each height segment source: Sea Ice ATBD contentType: referenceInformation origname: height_segment_id fullnamepath: /gt2r/freeboard_beam_segment/beam_freeboard/height_segment_id coordinates: gt2r_freeboard_beam_segment_beam_freeboard_delta_time gt2r_freeboard_beam_segment_beam_freeboard_latitude gt2r_freeboard_beam_segment_beam_freeboard_longitude |
| gt2r_freeboard_beam_segment_beam_freeboard_beam_fb_height: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6785] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Freeboard estimate description: Estimate of the freeboard height based on the beam h reference source: ATBD section 5 origname: beam_fb_height fullnamepath: /gt2r/freeboard_beam_segment/beam_freeboard/beam_fb_height coordinates: gt2r_freeboard_beam_segment_beam_freeboard_delta_time gt2r_freeboard_beam_segment_beam_freeboard_latitude gt2r_freeboard_beam_segment_beam_freeboard_longitude |
| gt2r_freeboard_beam_segment_beam_freeboard_beam_refsur_ndx: | Array of 32 bit Integers [gt2r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6785] units: 1 contentType: referenceInformation long_name: Index to beam refsur description: 1-based index to reference surface used for this freeboard height. Its value is identical to the fbswath_ndx. This index also idenifies the swath segment with which the beam freeboard associated. source: ATBD section 5 origname: beam_refsur_ndx fullnamepath: /gt2r/freeboard_beam_segment/beam_freeboard/beam_refsur_ndx coordinates: gt2r_freeboard_beam_segment_beam_freeboard_delta_time gt2r_freeboard_beam_segment_beam_freeboard_latitude gt2r_freeboard_beam_segment_beam_freeboard_longitude |
| gt2r_freeboard_beam_segment_beam_freeboard_seg_dist_x: | Array of 64 bit Reals [gt2r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6785] units: meters contentType: physicalMeasurement long_name: Along Track Distance description: Along-track distance from the equator crossing to the segment center. source: Sea Ice ATBD origname: seg_dist_x fullnamepath: /gt2r/freeboard_beam_segment/beam_freeboard/seg_dist_x coordinates: gt2r_freeboard_beam_segment_beam_freeboard_delta_time gt2r_freeboard_beam_segment_beam_freeboard_latitude gt2r_freeboard_beam_segment_beam_freeboard_longitude |
| gt2r_freeboard_beam_segment_beam_freeboard_longitude: | Array of 64 bit Reals [gt2r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6785] units: degrees_east contentType: referenceInformation long_name: Longitude standard_name: longitude description: Longitude, WGS84, East=+,Lon of segment center source: Sea Ice ATBD valid_min: -180.00000000000000 valid_max: 180.00000000000000 origname: longitude fullnamepath: /gt2r/freeboard_beam_segment/beam_freeboard/longitude coordinates: gt2r_freeboard_beam_segment_beam_freeboard_delta_time gt2r_freeboard_beam_segment_beam_freeboard_latitude |
| gt2r_freeboard_beam_segment_beam_freeboard_latitude: | Array of 64 bit Reals [gt2r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6785] units: degrees_north contentType: referenceInformation long_name: Latitude standard_name: latitude description: Latitude, WGS84, North=+, Lat of segment center source: Sea Ice ATBD valid_min: -90.000000000000000 valid_max: 90.000000000000000 origname: latitude fullnamepath: /gt2r/freeboard_beam_segment/beam_freeboard/latitude coordinates: gt2r_freeboard_beam_segment_beam_freeboard_delta_time gt2r_freeboard_beam_segment_beam_freeboard_longitude |
| gt2r_freeboard_beam_segment_beam_freeboard_geoseg_beg: | Array of 32 bit Integers [gt2r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6785] units: 1 contentType: referenceInformation long_name: Beginning GEOSEG description: Geolocation segment (geoseg) ID associated with the first photon used in this sea ice segment source: Sea Ice ATBD origname: geoseg_beg fullnamepath: /gt2r/freeboard_beam_segment/beam_freeboard/geoseg_beg coordinates: gt2r_freeboard_beam_segment_beam_freeboard_delta_time gt2r_freeboard_beam_segment_beam_freeboard_latitude gt2r_freeboard_beam_segment_beam_freeboard_longitude |
| gt2r_freeboard_beam_segment_beam_freeboard_beam_fb_confidence: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6785] _FillValue: 3.402823466e+38 units: 1 contentType: referenceInformation long_name: Freeboard confidence description: Confidence level in the freeboard estimate source: ATBD section 5 origname: beam_fb_confidence fullnamepath: /gt2r/freeboard_beam_segment/beam_freeboard/beam_fb_confidence coordinates: gt2r_freeboard_beam_segment_beam_freeboard_delta_time gt2r_freeboard_beam_segment_beam_freeboard_latitude gt2r_freeboard_beam_segment_beam_freeboard_longitude |
| gt2r_freeboard_beam_segment_beam_freeboard_beam_fb_sigma: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6785] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Freeboard sigma estimate description: estimate of the sigma ( standard deviation) for each beam freeboard height source: ATBD section 5 origname: beam_fb_sigma fullnamepath: /gt2r/freeboard_beam_segment/beam_freeboard/beam_fb_sigma coordinates: gt2r_freeboard_beam_segment_beam_freeboard_delta_time gt2r_freeboard_beam_segment_beam_freeboard_latitude gt2r_freeboard_beam_segment_beam_freeboard_longitude |
| gt2r_freeboard_beam_segment_beam_freeboard_geoseg_end: | Array of 32 bit Integers [gt2r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6785] units: 1 contentType: referenceInformation long_name: Ending GEOSEG description: Geolocation segment (geoseg) ID associated with the last photon used in this sea ice segment source: Sea Ice ATBD origname: geoseg_end fullnamepath: /gt2r/freeboard_beam_segment/beam_freeboard/geoseg_end coordinates: gt2r_freeboard_beam_segment_beam_freeboard_delta_time gt2r_freeboard_beam_segment_beam_freeboard_latitude gt2r_freeboard_beam_segment_beam_freeboard_longitude |
| gt2r_freeboard_beam_segment_beam_freeboard_beam_fb_quality_flag: | Array of 16 bit Integers [gt2r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6785] units: 1 contentType: referenceInformation long_name: Flag describing the quality of the freeboard estimate description: Flag describing the quality of the results of the along-track fit. (-1=height value is invalid; 1=ngrid_w < wlength/2; 2=ngrid_w >= wlength/2; 3=ngrid_dt < dtlength/2; 4=ngrid_dt >= dtlength/2; 5=ngrid_dt >= (dtlength-2): where 1 is best and 5 is poor). source: ATBD section 5 flag_meanings: invalid best high med low poor flag_values: -1, 1, 2, 3, 4, 5 valid_min: -1 valid_max: 5 origname: beam_fb_quality_flag fullnamepath: /gt2r/freeboard_beam_segment/beam_freeboard/beam_fb_quality_flag coordinates: gt2r_freeboard_beam_segment_beam_freeboard_delta_time gt2r_freeboard_beam_segment_beam_freeboard_latitude gt2r_freeboard_beam_segment_beam_freeboard_longitude |
| gt2r_freeboard_beam_segment_beam_fb_length: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Length ofbeam freeboard swath-segment description: Length of freeboard beam-segment source: ATBD section 5 origname: beam_fb_length fullnamepath: /gt2r/freeboard_beam_segment/beam_fb_length coordinates: gt2r_freeboard_beam_segment_delta_time gt2r_freeboard_beam_segment_latitude gt2r_freeboard_beam_segment_longitude |
| gt2r_freeboard_beam_segment_beam_fb_hist: | Array of 16 bit Integers [gt2r_freeboard_beam_segment_delta_time = 0..48][gt2r_freeboard_beam_segment_ds_si_hist_bins = 0..160] units: 1 contentType: referenceInformation long_name: Beam freeboard histogram description: Beam Freeboard (using beam fbswath reference surface height) histogram (distribution) for this freeboard beam-segment source: ATBD section 5 origname: beam_fb_hist fullnamepath: /gt2r/freeboard_beam_segment/beam_fb_hist coordinates: gt2r_freeboard_beam_segment_delta_time gt2r_freeboard_beam_segment_latitude gt2r_freeboard_beam_segment_longitude |
| gt2r_freeboard_beam_segment_geophysical_height_segment_dac: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_geophysical_delta_time = 0..6785] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: Dynamic Atmosphere Correction description: Dynamic Atmospheric Correction (DAC) includes inverted barometer (IB) effect (From ATL07) source: Sea Ice ATBD origname: height_segment_dac fullnamepath: /gt2r/freeboard_beam_segment/geophysical/height_segment_dac coordinates: gt2r_freeboard_beam_segment_geophysical_delta_time gt2r_freeboard_beam_segment_geophysical_latitude gt2r_freeboard_beam_segment_geophysical_longitude |
| gt2r_freeboard_beam_segment_geophysical_height_segment_tide_pole: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_geophysical_delta_time = 0..6785] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: Pole Tide description: Pole Tide -Rotational deformation due to polar motion (-1.5 to 1.5 cm). (From ATL07) source: Sea Ice ATBD origname: height_segment_tide_pole fullnamepath: /gt2r/freeboard_beam_segment/geophysical/height_segment_tide_pole coordinates: gt2r_freeboard_beam_segment_geophysical_delta_time gt2r_freeboard_beam_segment_geophysical_latitude gt2r_freeboard_beam_segment_geophysical_longitude |
| gt2r_freeboard_beam_segment_geophysical_longitude: | Array of 64 bit Reals [gt2r_freeboard_beam_segment_geophysical_delta_time = 0..6785] units: degrees_east contentType: referenceInformation long_name: Longitude standard_name: longitude description: Longitude, WGS84, East=+,Lon of segment center source: Sea Ice ATBD valid_min: -180.00000000000000 valid_max: 180.00000000000000 origname: longitude fullnamepath: /gt2r/freeboard_beam_segment/geophysical/longitude coordinates: gt2r_freeboard_beam_segment_geophysical_delta_time gt2r_freeboard_beam_segment_geophysical_latitude |
| gt2r_freeboard_beam_segment_geophysical_latitude: | Array of 64 bit Reals [gt2r_freeboard_beam_segment_geophysical_delta_time = 0..6785] units: degrees_north long_name: Latitude standard_name: latitude description: Latitude, WGS84, North=+, Lat of segment center source: Sea Ice ATBD valid_min: -90.000000000000000 valid_max: 90.000000000000000 contentType: referenceInformation origname: latitude fullnamepath: /gt2r/freeboard_beam_segment/geophysical/latitude coordinates: gt2r_freeboard_beam_segment_geophysical_delta_time gt2r_freeboard_beam_segment_geophysical_longitude |
| gt2r_freeboard_beam_segment_geophysical_height_segment_load: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_geophysical_delta_time = 0..6785] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: Load Tide description: Load Tide - Local displacement due to Ocean Loading (-6 to 0 cm).(From ATL07) source: Sea Ice ATBD origname: height_segment_load fullnamepath: /gt2r/freeboard_beam_segment/geophysical/height_segment_load coordinates: gt2r_freeboard_beam_segment_geophysical_delta_time gt2r_freeboard_beam_segment_geophysical_latitude gt2r_freeboard_beam_segment_geophysical_longitude |
| gt2r_freeboard_beam_segment_geophysical_height_segment_geoid: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_geophysical_delta_time = 0..6785] contentType: referenceInformation long_name: EGM2008 Geoid description: Geoid height above WGS-84 reference ellipsoid (range -107 to 86m), based on the EGM2008 model.(From ATL07) source: Sea Ice ATBD _FillValue: 3.402823466e+38 units: meters origname: height_segment_geoid fullnamepath: /gt2r/freeboard_beam_segment/geophysical/height_segment_geoid coordinates: gt2r_freeboard_beam_segment_geophysical_delta_time gt2r_freeboard_beam_segment_geophysical_latitude gt2r_freeboard_beam_segment_geophysical_longitude |
| gt2r_freeboard_beam_segment_geophysical_height_segment_ocean: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_geophysical_delta_time = 0..6785] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: Ocean Tide description: Ocean Tides including diurnal and semi-diurnal (harmonic analysis), and longer period tides (dynamic and self-consistent equilibrium) (From ATL07) source: Sea Ice ATBD origname: height_segment_ocean fullnamepath: /gt2r/freeboard_beam_segment/geophysical/height_segment_ocean coordinates: gt2r_freeboard_beam_segment_geophysical_delta_time gt2r_freeboard_beam_segment_geophysical_latitude gt2r_freeboard_beam_segment_geophysical_longitude |
| gt2r_freeboard_beam_segment_geophysical_height_segment_mss: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_geophysical_delta_time = 0..6785] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: Mean Sea Surface description: Mean sea surface height above WGS-84 reference ellipsoid. (From ATL07, includes tide-free geoid and mean dynamic topography source: Sea Ice ATBD origname: height_segment_mss fullnamepath: /gt2r/freeboard_beam_segment/geophysical/height_segment_mss coordinates: gt2r_freeboard_beam_segment_geophysical_delta_time gt2r_freeboard_beam_segment_geophysical_latitude gt2r_freeboard_beam_segment_geophysical_longitude |
| gt2r_freeboard_beam_segment_geophysical_height_segment_earth: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_geophysical_delta_time = 0..6785] contentType: referenceInformation long_name: Earth Tide description: Solid Earth Tide(From ATL07) source: Sea Ice ATBD _FillValue: 3.402823466e+38 units: meters origname: height_segment_earth fullnamepath: /gt2r/freeboard_beam_segment/geophysical/height_segment_earth coordinates: gt2r_freeboard_beam_segment_geophysical_delta_time gt2r_freeboard_beam_segment_geophysical_latitude gt2r_freeboard_beam_segment_geophysical_longitude |
| gt2r_freeboard_beam_segment_fbswath_ndx: | Array of 32 bit Integers [gt2r_freeboard_beam_segment_delta_time = 0..48] units: 1 contentType: referenceInformation long_name: Index to freeboard swath segment description: The 1-based fbswath_nx identifies the swath associated with each element. There are the same number of elements in the group /freeboard_swath_segment and in each of the /GTx/freeboard_beam_segment groups. The fbswath_nx identifies the fbswath_refsurf_height used to compute the fbswath_fb_height. It is the same index number that idenitifies the beam_refsurf_height to its swath and the beam_refsurf_height used to computed the beam_fb_height. source: ATBD section 5 origname: fbswath_ndx fullnamepath: /gt2r/freeboard_beam_segment/fbswath_ndx coordinates: gt2r_freeboard_beam_segment_delta_time gt2r_freeboard_beam_segment_latitude gt2r_freeboard_beam_segment_longitude |
| gt2r_freeboard_beam_segment_beam_fb_sigma: | Array of 32 bit Reals [gt2r_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Beam Freeboard standard deviation swath-segment description: Freeboard standard deviation of the height-segments in freeboard beam-segment source: ATBD section 5 origname: beam_fb_sigma fullnamepath: /gt2r/freeboard_beam_segment/beam_fb_sigma coordinates: gt2r_freeboard_beam_segment_delta_time gt2r_freeboard_beam_segment_latitude gt2r_freeboard_beam_segment_longitude |
| gt2r_freeboard_beam_segment_beam_lead_n: | Array of 32 bit Integers [gt2r_freeboard_beam_segment_delta_time = 0..48] units: 1 contentType: referenceInformation long_name: Number of leads description: Number of leads used for this beam reference surface source: Sea Ice ATBD origname: beam_lead_n fullnamepath: /gt2r/freeboard_beam_segment/beam_lead_n coordinates: gt2r_freeboard_beam_segment_delta_time gt2r_freeboard_beam_segment_latitude gt2r_freeboard_beam_segment_longitude |
| gt2r_leads_lead_height: | Array of 32 bit Reals [gt2r_leads_delta_time = 0..45] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Lead height description: Lead height - weighted mean of consective sea surface heights used for this lead source: ATBD section 5 origname: lead_height fullnamepath: /gt2r/leads/lead_height coordinates: gt2r_leads_delta_time gt2r_leads_latitude gt2r_leads_longitude |
| gt2r_leads_lead_length: | Array of 32 bit Reals [gt2r_leads_delta_time = 0..45] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Lead size description: Along-track length of this lead source: ATBD section 5 origname: lead_length fullnamepath: /gt2r/leads/lead_length coordinates: gt2r_leads_delta_time gt2r_leads_latitude gt2r_leads_longitude |
| gt2r_leads_lead_sigma: | Array of 32 bit Reals [gt2r_leads_delta_time = 0..45] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Lead sigma estimate description: Lead height sigma (standard deviation) estimate - weighted combination of sea surface height sigmas used as leads in this beam for this swath segment source: ATBD section 5 origname: lead_sigma fullnamepath: /gt2r/leads/lead_sigma coordinates: gt2r_leads_delta_time gt2r_leads_latitude gt2r_leads_longitude |
| gt2r_leads_longitude: | Array of 64 bit Reals [gt2r_leads_delta_time = 0..45] units: degrees_east contentType: referenceInformation long_name: Center longitude of lead standard_name: longitude description: Center longitude of lead (mean of all freeboard longitudes) source: ATBD section 5 origname: longitude fullnamepath: /gt2r/leads/longitude coordinates: gt2r_leads_delta_time gt2r_leads_latitude |
| gt2r_leads_latitude: | Array of 64 bit Reals [gt2r_leads_delta_time = 0..45] units: degrees_north contentType: referenceInformation long_name: Center latitude of lead standard_name: latitude description: Center latitude of lead (mean of all sea surface height latitudes) source: ATBD section 5 origname: latitude fullnamepath: /gt2r/leads/latitude coordinates: gt2r_leads_delta_time gt2r_leads_longitude |
| gt2r_leads_ssh_n: | Array of 32 bit Integers [gt2r_leads_delta_time = 0..45] units: 1 contentType: referenceInformation long_name: number of sea surface references description: Number of sea surface height segments used for this lead source: ATBD section 5 origname: ssh_n fullnamepath: /gt2r/leads/ssh_n coordinates: gt2r_leads_delta_time gt2r_leads_latitude gt2r_leads_longitude |
| gt2r_leads_ssh_ndx: | Array of 32 bit Integers [gt2r_leads_delta_time = 0..45] units: 1 contentType: referenceInformation long_name: index first sea surface description: 1-based index to the first freeboard element (i.e.first sea surface height segment) used for this lead source: Sea Ice ATBD origname: ssh_ndx fullnamepath: /gt2r/leads/ssh_ndx coordinates: gt2r_leads_delta_time gt2r_leads_latitude gt2r_leads_longitude |
| gt1l_freeboard_beam_segment_beam_refsurf_sigma: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: reference surface sigma description: Reference surface height sigma (standard devaition) - weighted combination of lead sigmas in this beam for this swath segment source: ATBD section 5 origname: beam_refsurf_sigma fullnamepath: /gt1l/freeboard_beam_segment/beam_refsurf_sigma coordinates: gt1l_freeboard_beam_segment_delta_time gt1l_freeboard_beam_segment_latitude gt1l_freeboard_beam_segment_longitude |
| gt1l_freeboard_beam_segment_beam_refsurf_alongtrack_slope: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: degrees contentType: modelResult long_name: reference surface along track slope description: Reference surface height along track slope source: ATBD section 5 origname: beam_refsurf_alongtrack_slope fullnamepath: /gt1l/freeboard_beam_segment/beam_refsurf_alongtrack_slope coordinates: gt1l_freeboard_beam_segment_delta_time gt1l_freeboard_beam_segment_latitude gt1l_freeboard_beam_segment_longitude |
| gt1l_freeboard_beam_segment_beam_lead_ndx: | Array of 32 bit Integers [gt1l_freeboard_beam_segment_delta_time = 0..48] units: 1 contentType: referenceInformation long_name: index first lead description: 1-based index to the first /GTx/leads lead used for this beam's reference surface. source: Sea Ice ATBD origname: beam_lead_ndx fullnamepath: /gt1l/freeboard_beam_segment/beam_lead_ndx coordinates: gt1l_freeboard_beam_segment_delta_time gt1l_freeboard_beam_segment_latitude gt1l_freeboard_beam_segment_longitude |
| gt1l_freeboard_beam_segment_beam_fb_height: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Beam Freeboard mean swath-segment description: Mean of the Freeboard height-segments in freeboard beam-segment source: ATBD section 5 origname: beam_fb_height fullnamepath: /gt1l/freeboard_beam_segment/beam_fb_height coordinates: gt1l_freeboard_beam_segment_delta_time gt1l_freeboard_beam_segment_latitude gt1l_freeboard_beam_segment_longitude |
| gt1l_freeboard_beam_segment_height_segments_msw_flag: | Array of 16 bit Integers [gt1l_freeboard_beam_segment_height_segments_delta_time = 0..5673] units: 1 contentType: modelResult long_name: multiple scattering warning flag description: Multiple Scattering warning flag. The multiple scattering warning flag (ATL09 parameter msw_flag) has values from -1 to 5 where zero means no multiple scattering and 5 the greatest. If no layers were detected, then msw_flag = 0. If blowing snow is detected and its estimated optical depth is greater than or equal to 0.5, then msw_flag = 5. If the blowing snow optical depth is less than 0.5, then msw_flag = 4. If no blowing snow is detected but there are cloud or aerosol layers detected, the msw_flag assumes values of 1 to 3 based on the height of the bottom of the lowest layer: < 1 km, msw_flag = 3; 1-3 km, msw_flag = 2; > 3km, msw_flag = 1. A value of -1 indicates that the signal to noise of the data was too low to reliably ascertain the presence of cloud or blowing snow. We expect values of -1 to occur only during daylight. source: ATL09 flag_meanings: cannot_determine no_layers layer_gt_3km layer_between_1_and_3_km layer_lt_1km blow_snow_od_lt_0.5 blow_snow_od_gt_0.5 flag_values: -1, 0, 1, 2, 3, 4, 5 valid_min: -1 valid_max: 5 origname: msw_flag fullnamepath: /gt1l/freeboard_beam_segment/height_segments/msw_flag coordinates: gt1l_freeboard_beam_segment_height_segments_delta_time gt1l_freeboard_beam_segment_height_segments_latitude gt1l_freeboard_beam_segment_height_segments_longitude |
| gt1l_freeboard_beam_segment_height_segments_cloud_flag_atm: | Array of 16 bit Integers [gt1l_freeboard_beam_segment_height_segments_delta_time = 0..5673] units: 1 long_name: cloud flag atm contentType: modelResult description: Number of layers found from the backscatter profile using the DDA layer finder source: ATL09 valid_min: 0 valid_max: 10 origname: cloud_flag_atm fullnamepath: /gt1l/freeboard_beam_segment/height_segments/cloud_flag_atm coordinates: gt1l_freeboard_beam_segment_height_segments_delta_time gt1l_freeboard_beam_segment_height_segments_latitude gt1l_freeboard_beam_segment_height_segments_longitude |
| gt1l_freeboard_beam_segment_height_segments_height_segment_length_seg: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_height_segments_delta_time = 0..5673] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: length of segment description: Along-track length of segment containing n_photons_actual ATL07 length_seg) source: Sea Ice ATBD origname: height_segment_length_seg fullnamepath: /gt1l/freeboard_beam_segment/height_segments/height_segment_length_seg coordinates: gt1l_freeboard_beam_segment_height_segments_delta_time gt1l_freeboard_beam_segment_height_segments_latitude gt1l_freeboard_beam_segment_height_segments_longitude |
| gt1l_freeboard_beam_segment_height_segments_height_segment_ib: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_height_segments_delta_time = 0..5673] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: inverted barometer effect description: Inverted barometer effect calculated from surface pressure source: ATBD section 4.2 origname: height_segment_ib fullnamepath: /gt1l/freeboard_beam_segment/height_segments/height_segment_ib coordinates: gt1l_freeboard_beam_segment_height_segments_delta_time gt1l_freeboard_beam_segment_height_segments_latitude gt1l_freeboard_beam_segment_height_segments_longitude |
| gt1l_freeboard_beam_segment_height_segments_bsnow_con: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_height_segments_delta_time = 0..5673] _FillValue: 3.402823466e+38 units: 1 contentType: modelResult long_name: Blowing snow confidence description: Blowing snow confidence source: ATL09 origname: bsnow_con fullnamepath: /gt1l/freeboard_beam_segment/height_segments/bsnow_con coordinates: gt1l_freeboard_beam_segment_height_segments_delta_time gt1l_freeboard_beam_segment_height_segments_latitude gt1l_freeboard_beam_segment_height_segments_longitude |
| gt1l_freeboard_beam_segment_height_segments_layer_flag: | Array of 16 bit Integers [gt1l_freeboard_beam_segment_height_segments_delta_time = 0..5673] units: 1 contentType: modelResult long_name: consolidated cloud flag description: This flag is a combination of multiple flags (cloud_flag_atm, cloud_flag_asr, and bsnow_con) and takes daytime/nighttime into consideration. A value of 1 means clouds or blowing snow are likely present. A value of 0 indicates the likely absence of clouds or blowing snow. source: ATL09 flag_meanings: likely_clear likely_cloudy flag_values: 0, 1 valid_min: 0 valid_max: 1 origname: layer_flag fullnamepath: /gt1l/freeboard_beam_segment/height_segments/layer_flag coordinates: gt1l_freeboard_beam_segment_height_segments_delta_time gt1l_freeboard_beam_segment_height_segments_latitude gt1l_freeboard_beam_segment_height_segments_longitude |
| gt1l_freeboard_beam_segment_height_segments_backgr_calc: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_height_segments_delta_time = 0..5673] _FillValue: 3.402823466e+38 units: hz contentType: modelResult long_name: background count rate calculated description: Calculated background count rate based on sun angle, surface slope, unit reflectance source: ATL07 origname: backgr_calc fullnamepath: /gt1l/freeboard_beam_segment/height_segments/backgr_calc coordinates: gt1l_freeboard_beam_segment_height_segments_delta_time gt1l_freeboard_beam_segment_height_segments_latitude gt1l_freeboard_beam_segment_height_segments_longitude |
| gt1l_freeboard_beam_segment_height_segments_bsnow_h: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_height_segments_delta_time = 0..5673] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Blowing snow top height description: Blowing snow layer top height source: ATL09 origname: bsnow_h fullnamepath: /gt1l/freeboard_beam_segment/height_segments/bsnow_h coordinates: gt1l_freeboard_beam_segment_height_segments_delta_time gt1l_freeboard_beam_segment_height_segments_latitude gt1l_freeboard_beam_segment_height_segments_longitude |
| gt1l_freeboard_beam_segment_height_segments_longitude: | Array of 64 bit Reals [gt1l_freeboard_beam_segment_height_segments_delta_time = 0..5673] units: degrees_east contentType: referenceInformation long_name: Longitude standard_name: longitude description: Longitude, WGS84, East=+,Lon of segment center source: Sea Ice ATBD valid_min: -180.00000000000000 valid_max: 180.00000000000000 origname: longitude fullnamepath: /gt1l/freeboard_beam_segment/height_segments/longitude coordinates: gt1l_freeboard_beam_segment_height_segments_delta_time gt1l_freeboard_beam_segment_height_segments_latitude |
| gt1l_freeboard_beam_segment_height_segments_background_r_norm: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_height_segments_delta_time = 0..5673] _FillValue: 3.402823466e+38 units: hz contentType: modelResult long_name: normalized background (50 shot) description: Background rate normalized to a fixed solar elevation angle source: ATL07 origname: background_r_norm fullnamepath: /gt1l/freeboard_beam_segment/height_segments/background_r_norm coordinates: gt1l_freeboard_beam_segment_height_segments_delta_time gt1l_freeboard_beam_segment_height_segments_latitude gt1l_freeboard_beam_segment_height_segments_longitude |
| gt1l_freeboard_beam_segment_height_segments_latitude: | Array of 64 bit Reals [gt1l_freeboard_beam_segment_height_segments_delta_time = 0..5673] units: degrees_north contentType: referenceInformation long_name: Latitude standard_name: latitude description: Latitude, WGS84, North=+, Lat of segment center source: Sea Ice ATBD valid_min: -90.000000000000000 valid_max: 90.000000000000000 origname: latitude fullnamepath: /gt1l/freeboard_beam_segment/height_segments/latitude coordinates: gt1l_freeboard_beam_segment_height_segments_delta_time gt1l_freeboard_beam_segment_height_segments_longitude |
| gt1l_freeboard_beam_segment_height_segments_ice_conc: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_height_segments_delta_time = 0..5673] _FillValue: 3.402823466e+38 units: 1 contentType: modelResult long_name: sea ice concentration description: Sea ice concentration percentage source: ATL07/ANC31 origname: ice_conc fullnamepath: /gt1l/freeboard_beam_segment/height_segments/ice_conc coordinates: gt1l_freeboard_beam_segment_height_segments_delta_time gt1l_freeboard_beam_segment_height_segments_latitude gt1l_freeboard_beam_segment_height_segments_longitude |
| gt1l_freeboard_beam_segment_height_segments_cloud_flag_asr: | Array of 16 bit Integers [gt1l_freeboard_beam_segment_height_segments_delta_time = 0..5673] units: 1 contentType: modelResult long_name: cloud flag asr description: Cloud flag (probability) from apparent surface reflectance. 0=clear with high confidence; 1=clear with medium confidence; 2=clear with low confidence; 3=cloudy with low confidence; 4=cloudy with medium confidence; 5=cloudy with high confidence; 6=unknown source: ATL09 flag_meanings: clear_with_high_confidence clear_with_medium_confidence clear_with_low_confidence cloudy_with_low_confidence cloudy_with_medium_confidence cloudy_with_high_confidence unknown flag_values: 0, 1, 2, 3, 4, 5, 6 valid_min: 0 valid_max: 6 origname: cloud_flag_asr fullnamepath: /gt1l/freeboard_beam_segment/height_segments/cloud_flag_asr coordinates: gt1l_freeboard_beam_segment_height_segments_delta_time gt1l_freeboard_beam_segment_height_segments_latitude gt1l_freeboard_beam_segment_height_segments_longitude |
| gt1l_freeboard_beam_segment_height_segments_height_segment_ssh_flag: | Array of 16 bit Integers [gt1l_freeboard_beam_segment_height_segments_delta_time = 0..5673] units: 1 contentType: referenceInformation long_name: Sea Surface Height Flag description: Identifiesthe height segments that are candidates for use as sea surface reference in freeboard calculations in ATL10. The flags are set as follows: 0 = sea ice; 1 = sea surface source: Sea Ice ATBD flag_meanings: sea_ice ice_surface flag_values: 0, 1 valid_min: 0 valid_max: 1 origname: height_segment_ssh_flag fullnamepath: /gt1l/freeboard_beam_segment/height_segments/height_segment_ssh_flag coordinates: gt1l_freeboard_beam_segment_height_segments_delta_time gt1l_freeboard_beam_segment_height_segments_latitude gt1l_freeboard_beam_segment_height_segments_longitude |
| gt1l_freeboard_beam_segment_height_segments_height_segment_surf_sigma: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_height_segments_delta_time = 0..5673] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: h surface sigma description: Sigma (standard deviation) estimate of the surface height (ATL07 h_surface_error) source: Sea Ice ATBD origname: height_segment_surf_sigma fullnamepath: /gt1l/freeboard_beam_segment/height_segments/height_segment_surf_sigma coordinates: gt1l_freeboard_beam_segment_height_segments_delta_time gt1l_freeboard_beam_segment_height_segments_latitude gt1l_freeboard_beam_segment_height_segments_longitude |
| gt1l_freeboard_beam_segment_height_segments_backgr_r_200: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_height_segments_delta_time = 0..5673] _FillValue: 3.402823466e+38 units: hz contentType: modelResult long_name: background rate 200 hz description: Background count rate, averaged over the segment based on ATLAS 50 pulse counts source: ATL09 origname: backgr_r_200 fullnamepath: /gt1l/freeboard_beam_segment/height_segments/backgr_r_200 coordinates: gt1l_freeboard_beam_segment_height_segments_delta_time gt1l_freeboard_beam_segment_height_segments_latitude gt1l_freeboard_beam_segment_height_segments_longitude |
| gt1l_freeboard_beam_segment_height_segments_height_segment_height: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_height_segments_delta_time = 0..5673] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: height of segment surface description: Mean height from along-track segment fit detremined by the sea ice algorithm(ATL07 h_si) source: Sea Ice ATBD origname: height_segment_height fullnamepath: /gt1l/freeboard_beam_segment/height_segments/height_segment_height coordinates: gt1l_freeboard_beam_segment_height_segments_delta_time gt1l_freeboard_beam_segment_height_segments_latitude gt1l_freeboard_beam_segment_height_segments_longitude |
| gt1l_freeboard_beam_segment_height_segments_height_segment_type: | Array of 16 bit Integers [gt1l_freeboard_beam_segment_height_segments_delta_time = 0..5673] units: 1 contentType: referenceInformation long_name: Segment surface type description: Value that indicates segment surface type as sea ice or different types of sea surface. 0=cloud covered: rsurf source: ATBD section 4.3 flag_meanings: cloud_covered other specular_lead_low_w_bkg specular_lead_low specular_lead_high_w_bkg specular_lead_high dark_lead_smooth_w_bkg dark_lead_smooth dark_lead_rough_w_bkg dark_lead_rough flag_values: 0 valid_min: 0 valid_max: 9 origname: height_segment_type fullnamepath: /gt1l/freeboard_beam_segment/height_segments/height_segment_type coordinates: gt1l_freeboard_beam_segment_height_segments_delta_time gt1l_freeboard_beam_segment_height_segments_latitude gt1l_freeboard_beam_segment_height_segments_longitude |
| gt1l_freeboard_beam_segment_height_segments_height_segment_confidence: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_height_segments_delta_time = 0..5673] _FillValue: 3.402823466e+38 units: 1 contentType: modelResult long_name: Surface height confidence description: Confidence level in the surface height estimate based on the number of photons; the background noise rate; and the error analysis (ATL07 h_confidence) source: Sea Ice ATBD origname: height_segment_confidence fullnamepath: /gt1l/freeboard_beam_segment/height_segments/height_segment_confidence coordinates: gt1l_freeboard_beam_segment_height_segments_delta_time gt1l_freeboard_beam_segment_height_segments_latitude gt1l_freeboard_beam_segment_height_segments_longitude |
| gt1l_freeboard_beam_segment_height_segments_asr_25: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_height_segments_delta_time = 0..5673] _FillValue: 3.402823466e+38 units: 1 contentType: modelResult long_name: Apparent surface reflectance at 25 hz description: Apparent surface reflectance at 25 hz, average to the sea ice segment source: ATL07 origname: asr_25 fullnamepath: /gt1l/freeboard_beam_segment/height_segments/asr_25 coordinates: gt1l_freeboard_beam_segment_height_segments_delta_time gt1l_freeboard_beam_segment_height_segments_latitude gt1l_freeboard_beam_segment_height_segments_longitude |
| gt1l_freeboard_beam_segment_height_segments_height_segment_w_gaussian: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_height_segments_delta_time = 0..5673] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: width of best fit gaussian description: Width of best fit gaussian (ATL07 w_gaussian) source: Sea Ice ATBD origname: height_segment_w_gaussian fullnamepath: /gt1l/freeboard_beam_segment/height_segments/height_segment_w_gaussian coordinates: gt1l_freeboard_beam_segment_height_segments_delta_time gt1l_freeboard_beam_segment_height_segments_latitude gt1l_freeboard_beam_segment_height_segments_longitude |
| gt1l_freeboard_beam_segment_height_segments_photon_rate: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_height_segments_delta_time = 0..5673] _FillValue: 3.402823466e+38 units: 1 contentType: modelResult long_name: photon rate description: Photon count rate, averaged over sea ice segment. source: ATL07 origname: photon_rate fullnamepath: /gt1l/freeboard_beam_segment/height_segments/photon_rate coordinates: gt1l_freeboard_beam_segment_height_segments_delta_time gt1l_freeboard_beam_segment_height_segments_latitude gt1l_freeboard_beam_segment_height_segments_longitude |
| gt1l_freeboard_beam_segment_height_segments_backgr_r_25: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_height_segments_delta_time = 0..5673] _FillValue: 3.402823466e+38 units: hz contentType: modelResult long_name: background rate 25 hz description: Background count rate, averaged over the segment based on 25 hz atmosphere source: ATL09 origname: backgr_r_25 fullnamepath: /gt1l/freeboard_beam_segment/height_segments/backgr_r_25 coordinates: gt1l_freeboard_beam_segment_height_segments_delta_time gt1l_freeboard_beam_segment_height_segments_latitude gt1l_freeboard_beam_segment_height_segments_longitude |
| gt1l_freeboard_beam_segment_height_segments_height_segment_rms: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_height_segments_delta_time = 0..5673] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: height rms description: RMS difference between sea ice modeled and observed photon height distribution(ATL07 h_rms) source: Sea Ice ATBD origname: height_segment_rms fullnamepath: /gt1l/freeboard_beam_segment/height_segments/height_segment_rms coordinates: gt1l_freeboard_beam_segment_height_segments_delta_time gt1l_freeboard_beam_segment_height_segments_latitude gt1l_freeboard_beam_segment_height_segments_longitude |
| gt1l_freeboard_beam_segment_beam_refsurf_interp_flag: | Array of 16 bit Integers [gt1l_freeboard_beam_segment_delta_time = 0..48] units: 1 long_name: reference surface interpolation flag description: Identifies segments with reference surface height filled through interpolation. -1 = no valid refrence surface was determined; 0= refsur computed from leads in this swath; 1 = reference surface inferred from data not in this swath; 2 = previous or next adjacent reference surface was used; 3 = filled based on the the upper height minus an offset source: ATBD section 5 flag_meanings: no_surf leads_in_swath inferred neighbor_used upper_height_minus_offset flag_values: -1, 0, 1, 2, 3 valid_min: -1 valid_max: 3 contentType: referenceInformation origname: beam_refsurf_interp_flag fullnamepath: /gt1l/freeboard_beam_segment/beam_refsurf_interp_flag coordinates: gt1l_freeboard_beam_segment_delta_time gt1l_freeboard_beam_segment_latitude gt1l_freeboard_beam_segment_longitude |
| gt1l_freeboard_beam_segment_longitude: | Array of 64 bit Reals [gt1l_freeboard_beam_segment_delta_time = 0..48] units: degrees_east contentType: referenceInformation long_name: Center longitude of freeboard swath-segment standard_name: longitude description: Center longitude of freeboard swath-segment (mean of all freeboard longitudes) source: ATBD section 5 origname: longitude fullnamepath: /gt1l/freeboard_beam_segment/longitude coordinates: gt1l_freeboard_beam_segment_delta_time gt1l_freeboard_beam_segment_latitude |
| gt1l_freeboard_beam_segment_beam_refsurf_height: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: reference surface mean description: Reference surface height -weighted combination of leads in this beam for this swath segment source: ATBD section 5 origname: beam_refsurf_height fullnamepath: /gt1l/freeboard_beam_segment/beam_refsurf_height coordinates: gt1l_freeboard_beam_segment_delta_time gt1l_freeboard_beam_segment_latitude gt1l_freeboard_beam_segment_longitude |
| gt1l_freeboard_beam_segment_latitude: | Array of 64 bit Reals [gt1l_freeboard_beam_segment_delta_time = 0..48] units: degrees_north contentType: referenceInformation long_name: Center latitude of freeboard swath-segment standard_name: latitude description: Center latitude of freeboard swath-segment (mean of all freeboard latitudes) source: ATBD section 5 origname: latitude fullnamepath: /gt1l/freeboard_beam_segment/latitude coordinates: gt1l_freeboard_beam_segment_delta_time gt1l_freeboard_beam_segment_longitude |
| gt1l_freeboard_beam_segment_beam_freeboard_height_segment_id: | Array of 32 bit Integers [gt1l_freeboard_beam_segment_beam_freeboard_delta_time = 0..5673] units: 1 long_name: Identifier of each height segment description: Identifier of each height segment source: Sea Ice ATBD contentType: referenceInformation origname: height_segment_id fullnamepath: /gt1l/freeboard_beam_segment/beam_freeboard/height_segment_id coordinates: gt1l_freeboard_beam_segment_beam_freeboard_delta_time gt1l_freeboard_beam_segment_beam_freeboard_latitude gt1l_freeboard_beam_segment_beam_freeboard_longitude |
| gt1l_freeboard_beam_segment_beam_freeboard_beam_fb_height: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_beam_freeboard_delta_time = 0..5673] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Freeboard estimate description: Estimate of the freeboard height based on the beam h reference source: ATBD section 5 origname: beam_fb_height fullnamepath: /gt1l/freeboard_beam_segment/beam_freeboard/beam_fb_height coordinates: gt1l_freeboard_beam_segment_beam_freeboard_delta_time gt1l_freeboard_beam_segment_beam_freeboard_latitude gt1l_freeboard_beam_segment_beam_freeboard_longitude |
| gt1l_freeboard_beam_segment_beam_freeboard_beam_refsur_ndx: | Array of 32 bit Integers [gt1l_freeboard_beam_segment_beam_freeboard_delta_time = 0..5673] units: 1 contentType: referenceInformation long_name: Index to beam refsur description: 1-based index to reference surface used for this freeboard height. Its value is identical to the fbswath_ndx. This index also idenifies the swath segment with which the beam freeboard associated. source: ATBD section 5 origname: beam_refsur_ndx fullnamepath: /gt1l/freeboard_beam_segment/beam_freeboard/beam_refsur_ndx coordinates: gt1l_freeboard_beam_segment_beam_freeboard_delta_time gt1l_freeboard_beam_segment_beam_freeboard_latitude gt1l_freeboard_beam_segment_beam_freeboard_longitude |
| gt1l_freeboard_beam_segment_beam_freeboard_seg_dist_x: | Array of 64 bit Reals [gt1l_freeboard_beam_segment_beam_freeboard_delta_time = 0..5673] units: meters contentType: physicalMeasurement long_name: Along Track Distance description: Along-track distance from the equator crossing to the segment center. source: Sea Ice ATBD origname: seg_dist_x fullnamepath: /gt1l/freeboard_beam_segment/beam_freeboard/seg_dist_x coordinates: gt1l_freeboard_beam_segment_beam_freeboard_delta_time gt1l_freeboard_beam_segment_beam_freeboard_latitude gt1l_freeboard_beam_segment_beam_freeboard_longitude |
| gt1l_freeboard_beam_segment_beam_freeboard_longitude: | Array of 64 bit Reals [gt1l_freeboard_beam_segment_beam_freeboard_delta_time = 0..5673] units: degrees_east contentType: referenceInformation long_name: Longitude standard_name: longitude description: Longitude, WGS84, East=+,Lon of segment center source: Sea Ice ATBD valid_min: -180.00000000000000 valid_max: 180.00000000000000 origname: longitude fullnamepath: /gt1l/freeboard_beam_segment/beam_freeboard/longitude coordinates: gt1l_freeboard_beam_segment_beam_freeboard_delta_time gt1l_freeboard_beam_segment_beam_freeboard_latitude |
| gt1l_freeboard_beam_segment_beam_freeboard_latitude: | Array of 64 bit Reals [gt1l_freeboard_beam_segment_beam_freeboard_delta_time = 0..5673] units: degrees_north contentType: referenceInformation long_name: Latitude standard_name: latitude description: Latitude, WGS84, North=+, Lat of segment center source: Sea Ice ATBD valid_min: -90.000000000000000 valid_max: 90.000000000000000 origname: latitude fullnamepath: /gt1l/freeboard_beam_segment/beam_freeboard/latitude coordinates: gt1l_freeboard_beam_segment_beam_freeboard_delta_time gt1l_freeboard_beam_segment_beam_freeboard_longitude |
| gt1l_freeboard_beam_segment_beam_freeboard_geoseg_beg: | Array of 32 bit Integers [gt1l_freeboard_beam_segment_beam_freeboard_delta_time = 0..5673] units: 1 contentType: referenceInformation long_name: Beginning GEOSEG description: Geolocation segment (geoseg) ID associated with the first photon used in this sea ice segment source: Sea Ice ATBD origname: geoseg_beg fullnamepath: /gt1l/freeboard_beam_segment/beam_freeboard/geoseg_beg coordinates: gt1l_freeboard_beam_segment_beam_freeboard_delta_time gt1l_freeboard_beam_segment_beam_freeboard_latitude gt1l_freeboard_beam_segment_beam_freeboard_longitude |
| gt1l_freeboard_beam_segment_beam_freeboard_beam_fb_confidence: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_beam_freeboard_delta_time = 0..5673] _FillValue: 3.402823466e+38 units: 1 contentType: referenceInformation long_name: Freeboard confidence description: Confidence level in the freeboard estimate source: ATBD section 5 origname: beam_fb_confidence fullnamepath: /gt1l/freeboard_beam_segment/beam_freeboard/beam_fb_confidence coordinates: gt1l_freeboard_beam_segment_beam_freeboard_delta_time gt1l_freeboard_beam_segment_beam_freeboard_latitude gt1l_freeboard_beam_segment_beam_freeboard_longitude |
| gt1l_freeboard_beam_segment_beam_freeboard_beam_fb_sigma: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_beam_freeboard_delta_time = 0..5673] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Freeboard sigma estimate description: estimate of the sigma ( standard deviation) for each beam freeboard height source: ATBD section 5 origname: beam_fb_sigma fullnamepath: /gt1l/freeboard_beam_segment/beam_freeboard/beam_fb_sigma coordinates: gt1l_freeboard_beam_segment_beam_freeboard_delta_time gt1l_freeboard_beam_segment_beam_freeboard_latitude gt1l_freeboard_beam_segment_beam_freeboard_longitude |
| gt1l_freeboard_beam_segment_beam_freeboard_geoseg_end: | Array of 32 bit Integers [gt1l_freeboard_beam_segment_beam_freeboard_delta_time = 0..5673] units: 1 contentType: referenceInformation long_name: Ending GEOSEG description: Geolocation segment (geoseg) ID associated with the last photon used in this sea ice segment source: Sea Ice ATBD origname: geoseg_end fullnamepath: /gt1l/freeboard_beam_segment/beam_freeboard/geoseg_end coordinates: gt1l_freeboard_beam_segment_beam_freeboard_delta_time gt1l_freeboard_beam_segment_beam_freeboard_latitude gt1l_freeboard_beam_segment_beam_freeboard_longitude |
| gt1l_freeboard_beam_segment_beam_freeboard_beam_fb_quality_flag: | Array of 16 bit Integers [gt1l_freeboard_beam_segment_beam_freeboard_delta_time = 0..5673] units: 1 contentType: referenceInformation long_name: Flag describing the quality of the freeboard estimate description: Flag describing the quality of the results of the along-track fit. (-1=height value is invalid; 1=ngrid_w < wlength/2; 2=ngrid_w >= wlength/2; 3=ngrid_dt < dtlength/2; 4=ngrid_dt >= dtlength/2; 5=ngrid_dt >= (dtlength-2): where 1 is best and 5 is poor). source: ATBD section 5 flag_meanings: invalid best high med low poor flag_values: -1, 1, 2, 3, 4, 5 valid_min: -1 valid_max: 5 origname: beam_fb_quality_flag fullnamepath: /gt1l/freeboard_beam_segment/beam_freeboard/beam_fb_quality_flag coordinates: gt1l_freeboard_beam_segment_beam_freeboard_delta_time gt1l_freeboard_beam_segment_beam_freeboard_latitude gt1l_freeboard_beam_segment_beam_freeboard_longitude |
| gt1l_freeboard_beam_segment_beam_fb_length: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Length ofbeam freeboard swath-segment description: Length of freeboard beam-segment source: ATBD section 5 origname: beam_fb_length fullnamepath: /gt1l/freeboard_beam_segment/beam_fb_length coordinates: gt1l_freeboard_beam_segment_delta_time gt1l_freeboard_beam_segment_latitude gt1l_freeboard_beam_segment_longitude |
| gt1l_freeboard_beam_segment_beam_fb_hist: | Array of 16 bit Integers [gt1l_freeboard_beam_segment_delta_time = 0..48][gt1l_freeboard_beam_segment_ds_si_hist_bins = 0..160] units: 1 contentType: referenceInformation long_name: Beam freeboard histogram description: Beam Freeboard (using beam fbswath reference surface height) histogram (distribution) for this freeboard beam-segment source: ATBD section 5 origname: beam_fb_hist fullnamepath: /gt1l/freeboard_beam_segment/beam_fb_hist coordinates: gt1l_freeboard_beam_segment_delta_time gt1l_freeboard_beam_segment_latitude gt1l_freeboard_beam_segment_longitude |
| gt1l_freeboard_beam_segment_geophysical_height_segment_dac: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_geophysical_delta_time = 0..5673] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: Dynamic Atmosphere Correction description: Dynamic Atmospheric Correction (DAC) includes inverted barometer (IB) effect (From ATL07) source: Sea Ice ATBD origname: height_segment_dac fullnamepath: /gt1l/freeboard_beam_segment/geophysical/height_segment_dac coordinates: gt1l_freeboard_beam_segment_geophysical_delta_time gt1l_freeboard_beam_segment_geophysical_latitude gt1l_freeboard_beam_segment_geophysical_longitude |
| gt1l_freeboard_beam_segment_geophysical_height_segment_tide_pole: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_geophysical_delta_time = 0..5673] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: Pole Tide description: Pole Tide -Rotational deformation due to polar motion (-1.5 to 1.5 cm). (From ATL07) source: Sea Ice ATBD origname: height_segment_tide_pole fullnamepath: /gt1l/freeboard_beam_segment/geophysical/height_segment_tide_pole coordinates: gt1l_freeboard_beam_segment_geophysical_delta_time gt1l_freeboard_beam_segment_geophysical_latitude gt1l_freeboard_beam_segment_geophysical_longitude |
| gt1l_freeboard_beam_segment_geophysical_longitude: | Array of 64 bit Reals [gt1l_freeboard_beam_segment_geophysical_delta_time = 0..5673] units: degrees_east contentType: referenceInformation long_name: Longitude standard_name: longitude description: Longitude, WGS84, East=+,Lon of segment center source: Sea Ice ATBD valid_min: -180.00000000000000 valid_max: 180.00000000000000 origname: longitude fullnamepath: /gt1l/freeboard_beam_segment/geophysical/longitude coordinates: gt1l_freeboard_beam_segment_geophysical_delta_time gt1l_freeboard_beam_segment_geophysical_latitude |
| gt1l_freeboard_beam_segment_geophysical_latitude: | Array of 64 bit Reals [gt1l_freeboard_beam_segment_geophysical_delta_time = 0..5673] units: degrees_north long_name: Latitude standard_name: latitude description: Latitude, WGS84, North=+, Lat of segment center source: Sea Ice ATBD valid_min: -90.000000000000000 valid_max: 90.000000000000000 contentType: referenceInformation origname: latitude fullnamepath: /gt1l/freeboard_beam_segment/geophysical/latitude coordinates: gt1l_freeboard_beam_segment_geophysical_delta_time gt1l_freeboard_beam_segment_geophysical_longitude |
| gt1l_freeboard_beam_segment_geophysical_height_segment_load: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_geophysical_delta_time = 0..5673] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: Load Tide description: Load Tide - Local displacement due to Ocean Loading (-6 to 0 cm).(From ATL07) source: Sea Ice ATBD origname: height_segment_load fullnamepath: /gt1l/freeboard_beam_segment/geophysical/height_segment_load coordinates: gt1l_freeboard_beam_segment_geophysical_delta_time gt1l_freeboard_beam_segment_geophysical_latitude gt1l_freeboard_beam_segment_geophysical_longitude |
| gt1l_freeboard_beam_segment_geophysical_height_segment_geoid: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_geophysical_delta_time = 0..5673] contentType: referenceInformation long_name: EGM2008 Geoid description: Geoid height above WGS-84 reference ellipsoid (range -107 to 86m), based on the EGM2008 model.(From ATL07) source: Sea Ice ATBD _FillValue: 3.402823466e+38 units: meters origname: height_segment_geoid fullnamepath: /gt1l/freeboard_beam_segment/geophysical/height_segment_geoid coordinates: gt1l_freeboard_beam_segment_geophysical_delta_time gt1l_freeboard_beam_segment_geophysical_latitude gt1l_freeboard_beam_segment_geophysical_longitude |
| gt1l_freeboard_beam_segment_geophysical_height_segment_ocean: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_geophysical_delta_time = 0..5673] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: Ocean Tide description: Ocean Tides including diurnal and semi-diurnal (harmonic analysis), and longer period tides (dynamic and self-consistent equilibrium) (From ATL07) source: Sea Ice ATBD origname: height_segment_ocean fullnamepath: /gt1l/freeboard_beam_segment/geophysical/height_segment_ocean coordinates: gt1l_freeboard_beam_segment_geophysical_delta_time gt1l_freeboard_beam_segment_geophysical_latitude gt1l_freeboard_beam_segment_geophysical_longitude |
| gt1l_freeboard_beam_segment_geophysical_height_segment_mss: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_geophysical_delta_time = 0..5673] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: Mean Sea Surface description: Mean sea surface height above WGS-84 reference ellipsoid. (From ATL07, includes tide-free geoid and mean dynamic topography source: Sea Ice ATBD origname: height_segment_mss fullnamepath: /gt1l/freeboard_beam_segment/geophysical/height_segment_mss coordinates: gt1l_freeboard_beam_segment_geophysical_delta_time gt1l_freeboard_beam_segment_geophysical_latitude gt1l_freeboard_beam_segment_geophysical_longitude |
| gt1l_freeboard_beam_segment_geophysical_height_segment_earth: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_geophysical_delta_time = 0..5673] contentType: referenceInformation long_name: Earth Tide description: Solid Earth Tide(From ATL07) source: Sea Ice ATBD _FillValue: 3.402823466e+38 units: meters origname: height_segment_earth fullnamepath: /gt1l/freeboard_beam_segment/geophysical/height_segment_earth coordinates: gt1l_freeboard_beam_segment_geophysical_delta_time gt1l_freeboard_beam_segment_geophysical_latitude gt1l_freeboard_beam_segment_geophysical_longitude |
| gt1l_freeboard_beam_segment_fbswath_ndx: | Array of 32 bit Integers [gt1l_freeboard_beam_segment_delta_time = 0..48] units: 1 contentType: referenceInformation long_name: Index to freeboard swath segment description: The 1-based fbswath_nx identifies the swath associated with each element. There are the same number of elements in the group /freeboard_swath_segment and in each of the /GTx/freeboard_beam_segment groups. The fbswath_nx identifies the fbswath_refsurf_height used to compute the fbswath_fb_height. It is the same index number that idenitifies the beam_refsurf_height to its swath and the beam_refsurf_height used to computed the beam_fb_height. source: ATBD section 5 origname: fbswath_ndx fullnamepath: /gt1l/freeboard_beam_segment/fbswath_ndx coordinates: gt1l_freeboard_beam_segment_delta_time gt1l_freeboard_beam_segment_latitude gt1l_freeboard_beam_segment_longitude |
| gt1l_freeboard_beam_segment_beam_fb_sigma: | Array of 32 bit Reals [gt1l_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Beam Freeboard standard deviation swath-segment description: Freeboard standard deviation of the height-segments in freeboard beam-segment source: ATBD section 5 origname: beam_fb_sigma fullnamepath: /gt1l/freeboard_beam_segment/beam_fb_sigma coordinates: gt1l_freeboard_beam_segment_delta_time gt1l_freeboard_beam_segment_latitude gt1l_freeboard_beam_segment_longitude |
| gt1l_freeboard_beam_segment_beam_lead_n: | Array of 32 bit Integers [gt1l_freeboard_beam_segment_delta_time = 0..48] units: 1 contentType: referenceInformation long_name: Number of leads description: Number of leads used for this beam reference surface source: Sea Ice ATBD origname: beam_lead_n fullnamepath: /gt1l/freeboard_beam_segment/beam_lead_n coordinates: gt1l_freeboard_beam_segment_delta_time gt1l_freeboard_beam_segment_latitude gt1l_freeboard_beam_segment_longitude |
| gt1l_leads_lead_height: | Array of 32 bit Reals [gt1l_leads_delta_time = 0..36] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Lead height description: Lead height - weighted mean of consective sea surface heights used for this lead source: ATBD section 5 origname: lead_height fullnamepath: /gt1l/leads/lead_height coordinates: gt1l_leads_delta_time gt1l_leads_latitude gt1l_leads_longitude |
| gt1l_leads_lead_length: | Array of 32 bit Reals [gt1l_leads_delta_time = 0..36] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Lead size description: Along-track length of this lead source: ATBD section 5 origname: lead_length fullnamepath: /gt1l/leads/lead_length coordinates: gt1l_leads_delta_time gt1l_leads_latitude gt1l_leads_longitude |
| gt1l_leads_lead_sigma: | Array of 32 bit Reals [gt1l_leads_delta_time = 0..36] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Lead sigma estimate description: Lead height sigma (standard deviation) estimate - weighted combination of sea surface height sigmas used as leads in this beam for this swath segment source: ATBD section 5 origname: lead_sigma fullnamepath: /gt1l/leads/lead_sigma coordinates: gt1l_leads_delta_time gt1l_leads_latitude gt1l_leads_longitude |
| gt1l_leads_longitude: | Array of 64 bit Reals [gt1l_leads_delta_time = 0..36] units: degrees_east contentType: referenceInformation long_name: Center longitude of lead standard_name: longitude description: Center longitude of lead (mean of all freeboard longitudes) source: ATBD section 5 origname: longitude fullnamepath: /gt1l/leads/longitude coordinates: gt1l_leads_delta_time gt1l_leads_latitude |
| gt1l_leads_latitude: | Array of 64 bit Reals [gt1l_leads_delta_time = 0..36] units: degrees_north contentType: referenceInformation long_name: Center latitude of lead standard_name: latitude description: Center latitude of lead (mean of all sea surface height latitudes) source: ATBD section 5 origname: latitude fullnamepath: /gt1l/leads/latitude coordinates: gt1l_leads_delta_time gt1l_leads_longitude |
| gt1l_leads_ssh_n: | Array of 32 bit Integers [gt1l_leads_delta_time = 0..36] units: 1 contentType: referenceInformation long_name: number of sea surface references description: Number of sea surface height segments used for this lead source: ATBD section 5 origname: ssh_n fullnamepath: /gt1l/leads/ssh_n coordinates: gt1l_leads_delta_time gt1l_leads_latitude gt1l_leads_longitude |
| gt1l_leads_ssh_ndx: | Array of 32 bit Integers [gt1l_leads_delta_time = 0..36] units: 1 contentType: referenceInformation long_name: index first sea surface description: 1-based index to the first freeboard element (i.e.first sea surface height segment) used for this lead source: Sea Ice ATBD origname: ssh_ndx fullnamepath: /gt1l/leads/ssh_ndx coordinates: gt1l_leads_delta_time gt1l_leads_latitude gt1l_leads_longitude |
| freeboard_swath_segment_fbswath_lead_n_gt2l: | Array of 32 bit Integers [freeboard_swath_segment_delta_time = 0..48] units: 1 contentType: referenceInformation long_name: Number of gt2l leads description: Number of gt2l leads used for this swath's reference surface source: Sea Ice ATBD origname: fbswath_lead_n_gt2l fullnamepath: /freeboard_swath_segment/fbswath_lead_n_gt2l coordinates: freeboard_swath_segment_delta_time freeboard_swath_segment_latitude freeboard_swath_segment_longitude |
| freeboard_swath_segment_fbswath_lead_n_gt2r: | Array of 32 bit Integers [freeboard_swath_segment_delta_time = 0..48] units: 1 contentType: referenceInformation long_name: Number of gt2r leads description: Number of gt2r leads used for this swath's reference surface source: Sea Ice ATBD origname: fbswath_lead_n_gt2r fullnamepath: /freeboard_swath_segment/fbswath_lead_n_gt2r coordinates: freeboard_swath_segment_delta_time freeboard_swath_segment_latitude freeboard_swath_segment_longitude |
| freeboard_swath_segment_fbswath_lead_ndx_gt3r: | Array of 32 bit Integers [freeboard_swath_segment_delta_time = 0..48] units: 1 contentType: referenceInformation long_name: Swath index gt3r first lead description: 1-based index to first /gt3r/leads lead used in this swath's reference surface source: ATBD section 5 origname: fbswath_lead_ndx_gt3r fullnamepath: /freeboard_swath_segment/fbswath_lead_ndx_gt3r coordinates: freeboard_swath_segment_delta_time freeboard_swath_segment_latitude freeboard_swath_segment_longitude |
| freeboard_swath_segment_fbswath_fb_height: | Array of 32 bit Reals [freeboard_swath_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Freeboard mean swath-segment description: Mean of the Freeboard height-segments in freeboard swath-segment source: ATBD section 5 origname: fbswath_fb_height fullnamepath: /freeboard_swath_segment/fbswath_fb_height coordinates: freeboard_swath_segment_delta_time freeboard_swath_segment_latitude freeboard_swath_segment_longitude |
| freeboard_swath_segment_fbswath_lead_ndx_gt1r: | Array of 32 bit Integers [freeboard_swath_segment_delta_time = 0..48] units: 1 long_name: Swath index gt1r first lead description: 1-based index to first /gt1r/leads lead used in this swath's reference surface source: ATBD section 5 contentType: referenceInformation origname: fbswath_lead_ndx_gt1r fullnamepath: /freeboard_swath_segment/fbswath_lead_ndx_gt1r coordinates: freeboard_swath_segment_delta_time freeboard_swath_segment_latitude freeboard_swath_segment_longitude |
| freeboard_swath_segment_fbswath_lead_ndx_gt1l: | Array of 32 bit Integers [freeboard_swath_segment_delta_time = 0..48] units: 1 contentType: referenceInformation long_name: Swath index gt1l first lead description: 1-based index to first /gt1l/leads lead used in this swath's reference surface source: ATBD section 5 origname: fbswath_lead_ndx_gt1l fullnamepath: /freeboard_swath_segment/fbswath_lead_ndx_gt1l coordinates: freeboard_swath_segment_delta_time freeboard_swath_segment_latitude freeboard_swath_segment_longitude |
| freeboard_swath_segment_fbswath_refsurf_height: | Array of 32 bit Reals [freeboard_swath_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: Reference surface height for the freeboard swath-segment description: Reference surface computed by the weighted mean of leads in freeboard swath-segment source: ATBD section 5 origname: fbswath_refsurf_height fullnamepath: /freeboard_swath_segment/fbswath_refsurf_height coordinates: freeboard_swath_segment_delta_time freeboard_swath_segment_latitude freeboard_swath_segment_longitude |
| freeboard_swath_segment_fbswath_lead_n_gt3r: | Array of 32 bit Integers [freeboard_swath_segment_delta_time = 0..48] units: 1 contentType: referenceInformation long_name: Number of gt3r leads description: Number of gt3r leads used for this swath's reference surface source: Sea Ice ATBD origname: fbswath_lead_n_gt3r fullnamepath: /freeboard_swath_segment/fbswath_lead_n_gt3r coordinates: freeboard_swath_segment_delta_time freeboard_swath_segment_latitude freeboard_swath_segment_longitude |
| freeboard_swath_segment_fbswath_fb_length: | Array of 32 bit Reals [freeboard_swath_segment_delta_time = 0..48] contentType: modelResult long_name: Length of freeboard swath-segment description: Length of freeboard swath-segment source: ATBD section 5 _FillValue: 3.402823466e+38 units: meters origname: fbswath_fb_length fullnamepath: /freeboard_swath_segment/fbswath_fb_length coordinates: freeboard_swath_segment_delta_time freeboard_swath_segment_latitude freeboard_swath_segment_longitude |
| freeboard_swath_segment_seg_dist_x: | Array of 64 bit Reals [freeboard_swath_segment_delta_time = 0..48] units: meters contentType: physicalMeasurement long_name: Along Track Distance description: Along-track distance from the equator crossing to the segment center. source: Sea Ice ATBD flag_meanings: n origname: seg_dist_x fullnamepath: /freeboard_swath_segment/seg_dist_x coordinates: freeboard_swath_segment_delta_time freeboard_swath_segment_latitude freeboard_swath_segment_longitude |
| freeboard_swath_segment_gt1r_swath_freeboard_fbswath_fb_height: | Array of 32 bit Reals [freeboard_swath_segment_gt1r_swath_freeboard_delta_time = 0..6275] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Freeboard estimate description: estimate of the freeboard height based on entire swath source: ATBD section 5 origname: fbswath_fb_height fullnamepath: /freeboard_swath_segment/gt1r/swath_freeboard/fbswath_fb_height coordinates: freeboard_swath_segment_gt1r_swath_freeboard_delta_time freeboard_swath_segment_gt1r_swath_freeboard_latitude freeboard_swath_segment_gt1r_swath_freeboard_longitude |
| freeboard_swath_segment_gt1r_swath_freeboard_height_segment_id: | Array of 32 bit Integers [freeboard_swath_segment_gt1r_swath_freeboard_delta_time = 0..6275] units: 1 contentType: referenceInformation long_name: Identifier of each height segment description: Identifier of each height segment source: Sea Ice ATBD origname: height_segment_id fullnamepath: /freeboard_swath_segment/gt1r/swath_freeboard/height_segment_id coordinates: freeboard_swath_segment_gt1r_swath_freeboard_delta_time freeboard_swath_segment_gt1r_swath_freeboard_latitude freeboard_swath_segment_gt1r_swath_freeboard_longitude |
| freeboard_swath_segment_gt1r_swath_freeboard_fbswath_fb_confidence: | Array of 32 bit Reals [freeboard_swath_segment_gt1r_swath_freeboard_delta_time = 0..6275] _FillValue: 3.402823466e+38 units: 1 contentType: referenceInformation long_name: Freeboard confidence description: Confidence level in the freeboard estimate source: ATBD section 5 origname: fbswath_fb_confidence fullnamepath: /freeboard_swath_segment/gt1r/swath_freeboard/fbswath_fb_confidence coordinates: freeboard_swath_segment_gt1r_swath_freeboard_delta_time freeboard_swath_segment_gt1r_swath_freeboard_latitude freeboard_swath_segment_gt1r_swath_freeboard_longitude |
| freeboard_swath_segment_gt1r_swath_freeboard_longitude: | Array of 64 bit Reals [freeboard_swath_segment_gt1r_swath_freeboard_delta_time = 0..6275] contentType: referenceInformation long_name: Longitude _FillValue: 1.7976931348623157e+308 units: degrees_east standard_name: longitude description: Longitude, WGS84, East=+,Lon of segment center source: section 3.1.9 valid_min: -180.00000000000000 valid_max: 180.00000000000000 origname: longitude fullnamepath: /freeboard_swath_segment/gt1r/swath_freeboard/longitude coordinates: freeboard_swath_segment_gt1r_swath_freeboard_delta_time freeboard_swath_segment_gt1r_swath_freeboard_latitude |
| freeboard_swath_segment_gt1r_swath_freeboard_latitude: | Array of 64 bit Reals [freeboard_swath_segment_gt1r_swath_freeboard_delta_time = 0..6275] _FillValue: 1.7976931348623157e+308 units: degrees_north contentType: referenceInformation long_name: Latitude standard_name: latitude description: Latitude, WGS84, North=+, Lat of segment center source: section 3.1.9 valid_min: -90.000000000000000 valid_max: 90.000000000000000 origname: latitude fullnamepath: /freeboard_swath_segment/gt1r/swath_freeboard/latitude coordinates: freeboard_swath_segment_gt1r_swath_freeboard_delta_time freeboard_swath_segment_gt1r_swath_freeboard_longitude |
| freeboard_swath_segment_gt1r_swath_freeboard_fbswath_fb_sigma: | Array of 32 bit Reals [freeboard_swath_segment_gt1r_swath_freeboard_delta_time = 0..6275] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Freeboard sigma estimate description: Sigma ( standard deviation) estimate of the freeboard height source: ATBD section 5 origname: fbswath_fb_sigma fullnamepath: /freeboard_swath_segment/gt1r/swath_freeboard/fbswath_fb_sigma coordinates: freeboard_swath_segment_gt1r_swath_freeboard_delta_time freeboard_swath_segment_gt1r_swath_freeboard_latitude freeboard_swath_segment_gt1r_swath_freeboard_longitude |
| freeboard_swath_segment_gt1r_swath_freeboard_fbswath_fb_quality_flag: | Array of 16 bit Integers [freeboard_swath_segment_gt1r_swath_freeboard_delta_time = 0..6275] units: 1 contentType: referenceInformation long_name: Flag describing the quality of the freeboard estimate description: Flag describing the quality of the results of the along-track fit. (-1=height value is invalid; 1=ngrid_w < wlength/2; 2=ngrid_w >= wlength/2; 3=ngrid_dt < dtlength/2; 4=ngrid_dt >= dtlength/2; 5=ngrid_dt >= (dtlength-2): where 1 is best and 5 is poor). source: ATBD section 5 flag_meanings: invalid best high med low poor flag_values: -1, 1, 2, 3, 4, 5 valid_min: -1 valid_max: 5 origname: fbswath_fb_quality_flag fullnamepath: /freeboard_swath_segment/gt1r/swath_freeboard/fbswath_fb_quality_flag coordinates: freeboard_swath_segment_gt1r_swath_freeboard_delta_time freeboard_swath_segment_gt1r_swath_freeboard_latitude freeboard_swath_segment_gt1r_swath_freeboard_longitude |
| freeboard_swath_segment_gt1r_swath_freeboard_fbswath_ndx: | Array of 32 bit Integers [freeboard_swath_segment_gt1r_swath_freeboard_delta_time = 0..6275] units: 1 contentType: referenceInformation long_name: Index to freeboard swath segment description: The 1-based fbswath_nx identifies the swath associated with each element. There are the same number of elements in the group /freeboard_swath_segment and in each of the /GTx/freeboard_beam_segment group. The fbswath_nx identifies the fbswath_refsurf_height used to compute the fbswath_fb_height. It is the same index number that idenitifies the beam_refsurf_height to its swath and the beam_refsurf_height used to computed the beam_fb_height. source: ATBD section 5 origname: fbswath_ndx fullnamepath: /freeboard_swath_segment/gt1r/swath_freeboard/fbswath_ndx coordinates: freeboard_swath_segment_gt1r_swath_freeboard_delta_time freeboard_swath_segment_gt1r_swath_freeboard_latitude freeboard_swath_segment_gt1r_swath_freeboard_longitude |
| freeboard_swath_segment_gt2r_swath_freeboard_fbswath_fb_height: | Array of 32 bit Reals [freeboard_swath_segment_gt2r_swath_freeboard_delta_time = 0..6785] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Freeboard estimate description: estimate of the freeboard height based on entire swath source: ATBD section 5 origname: fbswath_fb_height fullnamepath: /freeboard_swath_segment/gt2r/swath_freeboard/fbswath_fb_height coordinates: freeboard_swath_segment_gt2r_swath_freeboard_delta_time freeboard_swath_segment_gt2r_swath_freeboard_latitude freeboard_swath_segment_gt2r_swath_freeboard_longitude |
| freeboard_swath_segment_gt2r_swath_freeboard_height_segment_id: | Array of 32 bit Integers [freeboard_swath_segment_gt2r_swath_freeboard_delta_time = 0..6785] units: 1 contentType: referenceInformation long_name: Identifier of each height segment description: Identifier of each height segment source: Sea Ice ATBD origname: height_segment_id fullnamepath: /freeboard_swath_segment/gt2r/swath_freeboard/height_segment_id coordinates: freeboard_swath_segment_gt2r_swath_freeboard_delta_time freeboard_swath_segment_gt2r_swath_freeboard_latitude freeboard_swath_segment_gt2r_swath_freeboard_longitude |
| freeboard_swath_segment_gt2r_swath_freeboard_fbswath_fb_confidence: | Array of 32 bit Reals [freeboard_swath_segment_gt2r_swath_freeboard_delta_time = 0..6785] _FillValue: 3.402823466e+38 units: 1 contentType: referenceInformation long_name: Freeboard confidence description: Confidence level in the freeboard estimate source: ATBD section 5 origname: fbswath_fb_confidence fullnamepath: /freeboard_swath_segment/gt2r/swath_freeboard/fbswath_fb_confidence coordinates: freeboard_swath_segment_gt2r_swath_freeboard_delta_time freeboard_swath_segment_gt2r_swath_freeboard_latitude freeboard_swath_segment_gt2r_swath_freeboard_longitude |
| freeboard_swath_segment_gt2r_swath_freeboard_longitude: | Array of 64 bit Reals [freeboard_swath_segment_gt2r_swath_freeboard_delta_time = 0..6785] contentType: referenceInformation long_name: Longitude _FillValue: 1.7976931348623157e+308 units: degrees_east standard_name: longitude description: Longitude, WGS84, East=+,Lon of segment center source: section 3.1.9 valid_min: -180.00000000000000 valid_max: 180.00000000000000 origname: longitude fullnamepath: /freeboard_swath_segment/gt2r/swath_freeboard/longitude coordinates: freeboard_swath_segment_gt2r_swath_freeboard_delta_time freeboard_swath_segment_gt2r_swath_freeboard_latitude |
| freeboard_swath_segment_gt2r_swath_freeboard_latitude: | Array of 64 bit Reals [freeboard_swath_segment_gt2r_swath_freeboard_delta_time = 0..6785] _FillValue: 1.7976931348623157e+308 units: degrees_north contentType: referenceInformation long_name: Latitude standard_name: latitude description: Latitude, WGS84, North=+, Lat of segment center source: section 3.1.9 valid_min: -90.000000000000000 valid_max: 90.000000000000000 origname: latitude fullnamepath: /freeboard_swath_segment/gt2r/swath_freeboard/latitude coordinates: freeboard_swath_segment_gt2r_swath_freeboard_delta_time freeboard_swath_segment_gt2r_swath_freeboard_longitude |
| freeboard_swath_segment_gt2r_swath_freeboard_fbswath_fb_sigma: | Array of 32 bit Reals [freeboard_swath_segment_gt2r_swath_freeboard_delta_time = 0..6785] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Freeboard sigma estimate description: Sigma ( standard deviation) estimate of the freeboard height source: ATBD section 5 origname: fbswath_fb_sigma fullnamepath: /freeboard_swath_segment/gt2r/swath_freeboard/fbswath_fb_sigma coordinates: freeboard_swath_segment_gt2r_swath_freeboard_delta_time freeboard_swath_segment_gt2r_swath_freeboard_latitude freeboard_swath_segment_gt2r_swath_freeboard_longitude |
| freeboard_swath_segment_gt2r_swath_freeboard_fbswath_fb_quality_flag: | Array of 16 bit Integers [freeboard_swath_segment_gt2r_swath_freeboard_delta_time = 0..6785] units: 1 contentType: referenceInformation long_name: Flag describing the quality of the freeboard estimate description: Flag describing the quality of the results of the along-track fit. (-1=height value is invalid; 1=ngrid_w < wlength/2; 2=ngrid_w >= wlength/2; 3=ngrid_dt < dtlength/2; 4=ngrid_dt >= dtlength/2; 5=ngrid_dt >= (dtlength-2): where 1 is best and 5 is poor). source: ATBD section 5 flag_meanings: invalid best high med low poor flag_values: -1, 1, 2, 3, 4, 5 valid_min: -1 valid_max: 5 origname: fbswath_fb_quality_flag fullnamepath: /freeboard_swath_segment/gt2r/swath_freeboard/fbswath_fb_quality_flag coordinates: freeboard_swath_segment_gt2r_swath_freeboard_delta_time freeboard_swath_segment_gt2r_swath_freeboard_latitude freeboard_swath_segment_gt2r_swath_freeboard_longitude |
| freeboard_swath_segment_gt2r_swath_freeboard_fbswath_ndx: | Array of 32 bit Integers [freeboard_swath_segment_gt2r_swath_freeboard_delta_time = 0..6785] units: 1 contentType: referenceInformation long_name: Index to freeboard swath segment description: The 1-based fbswath_nx identifies the swath associated with each element. There are the same number of elements in the group /freeboard_swath_segment and in each of the /GTx/freeboard_beam_segment group. The fbswath_nx identifies the fbswath_refsurf_height used to compute the fbswath_fb_height. It is the same index number that idenitifies the beam_refsurf_height to its swath and the beam_refsurf_height used to computed the beam_fb_height. source: ATBD section 5 origname: fbswath_ndx fullnamepath: /freeboard_swath_segment/gt2r/swath_freeboard/fbswath_ndx coordinates: freeboard_swath_segment_gt2r_swath_freeboard_delta_time freeboard_swath_segment_gt2r_swath_freeboard_latitude freeboard_swath_segment_gt2r_swath_freeboard_longitude |
| freeboard_swath_segment_fbswath_lead_ndx_gt2r: | Array of 32 bit Integers [freeboard_swath_segment_delta_time = 0..48] units: 1 contentType: referenceInformation long_name: Swath index gt2r first lead description: 1-based index to first /gt2r/leads lead used in this swath's reference surface source: ATBD section 5 origname: fbswath_lead_ndx_gt2r fullnamepath: /freeboard_swath_segment/fbswath_lead_ndx_gt2r coordinates: freeboard_swath_segment_delta_time freeboard_swath_segment_latitude freeboard_swath_segment_longitude |
| freeboard_swath_segment_gt1l_swath_freeboard_fbswath_fb_height: | Array of 32 bit Reals [freeboard_swath_segment_gt1l_swath_freeboard_delta_time = 0..5673] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Freeboard estimate description: estimate of the freeboard height based on entire swath source: ATBD section 5 origname: fbswath_fb_height fullnamepath: /freeboard_swath_segment/gt1l/swath_freeboard/fbswath_fb_height coordinates: freeboard_swath_segment_gt1l_swath_freeboard_delta_time freeboard_swath_segment_gt1l_swath_freeboard_latitude freeboard_swath_segment_gt1l_swath_freeboard_longitude |
| freeboard_swath_segment_gt1l_swath_freeboard_height_segment_id: | Array of 32 bit Integers [freeboard_swath_segment_gt1l_swath_freeboard_delta_time = 0..5673] units: 1 contentType: referenceInformation long_name: Identifier of each height segment description: Identifier of each height segment source: Sea Ice ATBD origname: height_segment_id fullnamepath: /freeboard_swath_segment/gt1l/swath_freeboard/height_segment_id coordinates: freeboard_swath_segment_gt1l_swath_freeboard_delta_time freeboard_swath_segment_gt1l_swath_freeboard_latitude freeboard_swath_segment_gt1l_swath_freeboard_longitude |
| freeboard_swath_segment_gt1l_swath_freeboard_fbswath_fb_confidence: | Array of 32 bit Reals [freeboard_swath_segment_gt1l_swath_freeboard_delta_time = 0..5673] _FillValue: 3.402823466e+38 units: 1 contentType: referenceInformation long_name: Freeboard confidence description: Confidence level in the freeboard estimate source: ATBD section 5 origname: fbswath_fb_confidence fullnamepath: /freeboard_swath_segment/gt1l/swath_freeboard/fbswath_fb_confidence coordinates: freeboard_swath_segment_gt1l_swath_freeboard_delta_time freeboard_swath_segment_gt1l_swath_freeboard_latitude freeboard_swath_segment_gt1l_swath_freeboard_longitude |
| freeboard_swath_segment_gt1l_swath_freeboard_longitude: | Array of 64 bit Reals [freeboard_swath_segment_gt1l_swath_freeboard_delta_time = 0..5673] contentType: referenceInformation long_name: Longitude _FillValue: 1.7976931348623157e+308 units: degrees_east standard_name: longitude description: Longitude, WGS84, East=+,Lon of segment center source: section 3.1.9 valid_min: -180.00000000000000 valid_max: 180.00000000000000 origname: longitude fullnamepath: /freeboard_swath_segment/gt1l/swath_freeboard/longitude coordinates: freeboard_swath_segment_gt1l_swath_freeboard_delta_time freeboard_swath_segment_gt1l_swath_freeboard_latitude |
| freeboard_swath_segment_gt1l_swath_freeboard_latitude: | Array of 64 bit Reals [freeboard_swath_segment_gt1l_swath_freeboard_delta_time = 0..5673] _FillValue: 1.7976931348623157e+308 units: degrees_north contentType: referenceInformation long_name: Latitude standard_name: latitude description: Latitude, WGS84, North=+, Lat of segment center source: section 3.1.9 valid_min: -90.000000000000000 valid_max: 90.000000000000000 origname: latitude fullnamepath: /freeboard_swath_segment/gt1l/swath_freeboard/latitude coordinates: freeboard_swath_segment_gt1l_swath_freeboard_delta_time freeboard_swath_segment_gt1l_swath_freeboard_longitude |
| freeboard_swath_segment_gt1l_swath_freeboard_fbswath_fb_sigma: | Array of 32 bit Reals [freeboard_swath_segment_gt1l_swath_freeboard_delta_time = 0..5673] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Freeboard sigma estimate description: Sigma ( standard deviation) estimate of the freeboard height source: ATBD section 5 origname: fbswath_fb_sigma fullnamepath: /freeboard_swath_segment/gt1l/swath_freeboard/fbswath_fb_sigma coordinates: freeboard_swath_segment_gt1l_swath_freeboard_delta_time freeboard_swath_segment_gt1l_swath_freeboard_latitude freeboard_swath_segment_gt1l_swath_freeboard_longitude |
| freeboard_swath_segment_gt1l_swath_freeboard_fbswath_fb_quality_flag: | Array of 16 bit Integers [freeboard_swath_segment_gt1l_swath_freeboard_delta_time = 0..5673] units: 1 contentType: referenceInformation long_name: Flag describing the quality of the freeboard estimate description: Flag describing the quality of the results of the along-track fit. (-1=height value is invalid; 1=ngrid_w < wlength/2; 2=ngrid_w >= wlength/2; 3=ngrid_dt < dtlength/2; 4=ngrid_dt >= dtlength/2; 5=ngrid_dt >= (dtlength-2): where 1 is best and 5 is poor). source: ATBD section 5 flag_meanings: invalid best high med low poor flag_values: -1, 1, 2, 3, 4, 5 valid_min: -1 valid_max: 5 origname: fbswath_fb_quality_flag fullnamepath: /freeboard_swath_segment/gt1l/swath_freeboard/fbswath_fb_quality_flag coordinates: freeboard_swath_segment_gt1l_swath_freeboard_delta_time freeboard_swath_segment_gt1l_swath_freeboard_latitude freeboard_swath_segment_gt1l_swath_freeboard_longitude |
| freeboard_swath_segment_gt1l_swath_freeboard_fbswath_ndx: | Array of 32 bit Integers [freeboard_swath_segment_gt1l_swath_freeboard_delta_time = 0..5673] units: 1 contentType: referenceInformation long_name: Index to freeboard swath segment description: The 1-based fbswath_nx identifies the swath associated with each element. There are the same number of elements in the group /freeboard_swath_segment and in each of the /GTx/freeboard_beam_segment group. The fbswath_nx identifies the fbswath_refsurf_height used to compute the fbswath_fb_height. It is the same index number that idenitifies the beam_refsurf_height to its swath and the beam_refsurf_height used to computed the beam_fb_height. source: ATBD section 5 origname: fbswath_ndx fullnamepath: /freeboard_swath_segment/gt1l/swath_freeboard/fbswath_ndx coordinates: freeboard_swath_segment_gt1l_swath_freeboard_delta_time freeboard_swath_segment_gt1l_swath_freeboard_latitude freeboard_swath_segment_gt1l_swath_freeboard_longitude |
| freeboard_swath_segment_longitude: | Array of 64 bit Reals [freeboard_swath_segment_delta_time = 0..48] units: degrees_east contentType: referenceInformation long_name: Center longitude of freeboard swath-segment standard_name: longitude description: Center longitude of freeboard swath-segment (mean of all freeboard longitudes) source: ATBD section 5 origname: longitude fullnamepath: /freeboard_swath_segment/longitude coordinates: freeboard_swath_segment_delta_time freeboard_swath_segment_latitude |
| freeboard_swath_segment_latitude: | Array of 64 bit Reals [freeboard_swath_segment_delta_time = 0..48] units: degrees_north contentType: referenceInformation long_name: Center latitude of freeboard swath-segment standard_name: latitude description: Center latitude of freeboard swath-segment (mean of all freeboard latitudes) source: ATBD section 5 origname: latitude fullnamepath: /freeboard_swath_segment/latitude coordinates: freeboard_swath_segment_delta_time freeboard_swath_segment_longitude |
| freeboard_swath_segment_fbswath_fb_sigma: | Array of 32 bit Reals [freeboard_swath_segment_delta_time = 0..48] contentType: modelResult long_name: Freeboard standard deviation swath-segment description: Freeboard standard deviation of the height-segments in freeboard swath-segment source: ATBD section 5 _FillValue: 3.402823466e+38 units: meters origname: fbswath_fb_sigma fullnamepath: /freeboard_swath_segment/fbswath_fb_sigma coordinates: freeboard_swath_segment_delta_time freeboard_swath_segment_latitude freeboard_swath_segment_longitude |
| freeboard_swath_segment_fbswath_lead_n_gt1l: | Array of 32 bit Integers [freeboard_swath_segment_delta_time = 0..48] units: 1 contentType: referenceInformation long_name: Number of gt1l leads description: Number of gt1l leads used for this swath's reference surface source: Sea Ice ATBD origname: fbswath_lead_n_gt1l fullnamepath: /freeboard_swath_segment/fbswath_lead_n_gt1l coordinates: freeboard_swath_segment_delta_time freeboard_swath_segment_latitude freeboard_swath_segment_longitude |
| freeboard_swath_segment_fbswath_fb_hist: | Array of 16 bit Integers [freeboard_swath_segment_delta_time = 0..48][freeboard_swath_segment_ds_si_hist_bins = 0..160] units: 1 contentType: referenceInformation long_name: freeboard histogram description: Swath Freeboard (using fbswath reference surface height) histogram (distribution) for this freeboard swath-segment source: ATBD section 5 origname: fbswath_fb_hist fullnamepath: /freeboard_swath_segment/fbswath_fb_hist coordinates: freeboard_swath_segment_delta_time freeboard_swath_segment_latitude freeboard_swath_segment_longitude |
| freeboard_swath_segment_gt3l_swath_freeboard_fbswath_fb_height: | Array of 32 bit Reals [freeboard_swath_segment_gt3l_swath_freeboard_delta_time = 0..6448] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Freeboard estimate description: estimate of the freeboard height based on entire swath source: ATBD section 5 origname: fbswath_fb_height fullnamepath: /freeboard_swath_segment/gt3l/swath_freeboard/fbswath_fb_height coordinates: freeboard_swath_segment_gt3l_swath_freeboard_delta_time freeboard_swath_segment_gt3l_swath_freeboard_latitude freeboard_swath_segment_gt3l_swath_freeboard_longitude |
| freeboard_swath_segment_gt3l_swath_freeboard_height_segment_id: | Array of 32 bit Integers [freeboard_swath_segment_gt3l_swath_freeboard_delta_time = 0..6448] units: 1 contentType: referenceInformation long_name: Identifier of each height segment description: Identifier of each height segment source: Sea Ice ATBD origname: height_segment_id fullnamepath: /freeboard_swath_segment/gt3l/swath_freeboard/height_segment_id coordinates: freeboard_swath_segment_gt3l_swath_freeboard_delta_time freeboard_swath_segment_gt3l_swath_freeboard_latitude freeboard_swath_segment_gt3l_swath_freeboard_longitude |
| freeboard_swath_segment_gt3l_swath_freeboard_fbswath_fb_confidence: | Array of 32 bit Reals [freeboard_swath_segment_gt3l_swath_freeboard_delta_time = 0..6448] _FillValue: 3.402823466e+38 units: 1 contentType: referenceInformation long_name: Freeboard confidence description: Confidence level in the freeboard estimate source: ATBD section 5 origname: fbswath_fb_confidence fullnamepath: /freeboard_swath_segment/gt3l/swath_freeboard/fbswath_fb_confidence coordinates: freeboard_swath_segment_gt3l_swath_freeboard_delta_time freeboard_swath_segment_gt3l_swath_freeboard_latitude freeboard_swath_segment_gt3l_swath_freeboard_longitude |
| freeboard_swath_segment_gt3l_swath_freeboard_longitude: | Array of 64 bit Reals [freeboard_swath_segment_gt3l_swath_freeboard_delta_time = 0..6448] contentType: referenceInformation long_name: Longitude _FillValue: 1.7976931348623157e+308 units: degrees_east standard_name: longitude description: Longitude, WGS84, East=+,Lon of segment center source: section 3.1.9 valid_min: -180.00000000000000 valid_max: 180.00000000000000 origname: longitude fullnamepath: /freeboard_swath_segment/gt3l/swath_freeboard/longitude coordinates: freeboard_swath_segment_gt3l_swath_freeboard_delta_time freeboard_swath_segment_gt3l_swath_freeboard_latitude |
| freeboard_swath_segment_gt3l_swath_freeboard_latitude: | Array of 64 bit Reals [freeboard_swath_segment_gt3l_swath_freeboard_delta_time = 0..6448] _FillValue: 1.7976931348623157e+308 units: degrees_north contentType: referenceInformation long_name: Latitude standard_name: latitude description: Latitude, WGS84, North=+, Lat of segment center source: section 3.1.9 valid_min: -90.000000000000000 valid_max: 90.000000000000000 origname: latitude fullnamepath: /freeboard_swath_segment/gt3l/swath_freeboard/latitude coordinates: freeboard_swath_segment_gt3l_swath_freeboard_delta_time freeboard_swath_segment_gt3l_swath_freeboard_longitude |
| freeboard_swath_segment_gt3l_swath_freeboard_fbswath_fb_sigma: | Array of 32 bit Reals [freeboard_swath_segment_gt3l_swath_freeboard_delta_time = 0..6448] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Freeboard sigma estimate description: Sigma ( standard deviation) estimate of the freeboard height source: ATBD section 5 origname: fbswath_fb_sigma fullnamepath: /freeboard_swath_segment/gt3l/swath_freeboard/fbswath_fb_sigma coordinates: freeboard_swath_segment_gt3l_swath_freeboard_delta_time freeboard_swath_segment_gt3l_swath_freeboard_latitude freeboard_swath_segment_gt3l_swath_freeboard_longitude |
| freeboard_swath_segment_gt3l_swath_freeboard_fbswath_fb_quality_flag: | Array of 16 bit Integers [freeboard_swath_segment_gt3l_swath_freeboard_delta_time = 0..6448] units: 1 contentType: referenceInformation long_name: Flag describing the quality of the freeboard estimate description: Flag describing the quality of the results of the along-track fit. (-1=height value is invalid; 1=ngrid_w < wlength/2; 2=ngrid_w >= wlength/2; 3=ngrid_dt < dtlength/2; 4=ngrid_dt >= dtlength/2; 5=ngrid_dt >= (dtlength-2): where 1 is best and 5 is poor). source: ATBD section 5 flag_meanings: invalid best high med low poor flag_values: -1, 1, 2, 3, 4, 5 valid_min: -1 valid_max: 5 origname: fbswath_fb_quality_flag fullnamepath: /freeboard_swath_segment/gt3l/swath_freeboard/fbswath_fb_quality_flag coordinates: freeboard_swath_segment_gt3l_swath_freeboard_delta_time freeboard_swath_segment_gt3l_swath_freeboard_latitude freeboard_swath_segment_gt3l_swath_freeboard_longitude |
| freeboard_swath_segment_gt3l_swath_freeboard_fbswath_ndx: | Array of 32 bit Integers [freeboard_swath_segment_gt3l_swath_freeboard_delta_time = 0..6448] units: 1 contentType: referenceInformation long_name: Index to freeboard swath segment description: The 1-based fbswath_nx identifies the swath associated with each element. There are the same number of elements in the group /freeboard_swath_segment and in each of the /GTx/freeboard_beam_segment group. The fbswath_nx identifies the fbswath_refsurf_height used to compute the fbswath_fb_height. It is the same index number that idenitifies the beam_refsurf_height to its swath and the beam_refsurf_height used to computed the beam_fb_height. source: ATBD section 5 origname: fbswath_ndx fullnamepath: /freeboard_swath_segment/gt3l/swath_freeboard/fbswath_ndx coordinates: freeboard_swath_segment_gt3l_swath_freeboard_delta_time freeboard_swath_segment_gt3l_swath_freeboard_latitude freeboard_swath_segment_gt3l_swath_freeboard_longitude |
| freeboard_swath_segment_fbswath_lead_ndx_gt2l: | Array of 32 bit Integers [freeboard_swath_segment_delta_time = 0..48] units: 1 contentType: referenceInformation long_name: Swath index gt2l first lead description: 1-based index to first /gt2l/leads lead used in this swath's reference surface source: ATBD section 5 origname: fbswath_lead_ndx_gt2l fullnamepath: /freeboard_swath_segment/fbswath_lead_ndx_gt2l coordinates: freeboard_swath_segment_delta_time freeboard_swath_segment_latitude freeboard_swath_segment_longitude |
| freeboard_swath_segment_fbswath_refsurf_interp_flag: | Array of 16 bit Integers [freeboard_swath_segment_delta_time = 0..48] units: 1 contentType: referenceInformation long_name: reference surface interpolation flag description: Identifies swath segments with reference surface height filled through interpolation. -1 = no valid refrence surface was determined; 0= refsur computed from leads in this swath; 1 = reference surface inferred from data not in this swath; 2 = previous or next adjacent reference surface was used; 3 = filled based on the the upper height minus an offset source: ATBD section 5 flag_meanings: no_surf leads_in_swath inferred neighbor_used upper_height_minus_offset flag_values: -1, 0, 1, 2, 3 origname: fbswath_refsurf_interp_flag fullnamepath: /freeboard_swath_segment/fbswath_refsurf_interp_flag coordinates: freeboard_swath_segment_delta_time freeboard_swath_segment_latitude freeboard_swath_segment_longitude |
| freeboard_swath_segment_fbswath_lead_n_gt3l: | Array of 32 bit Integers [freeboard_swath_segment_delta_time = 0..48] units: 1 contentType: referenceInformation long_name: Number of gt3l leads description: Number of gt3l leads used for this swath's reference surface source: Sea Ice ATBD origname: fbswath_lead_n_gt3l fullnamepath: /freeboard_swath_segment/fbswath_lead_n_gt3l coordinates: freeboard_swath_segment_delta_time freeboard_swath_segment_latitude freeboard_swath_segment_longitude |
| freeboard_swath_segment_fbswath_refsurf_sigma: | Array of 32 bit Reals [freeboard_swath_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: sigma of freeboard swath-segment refsurf description: The sigma (standard deviation) of reference surface for this freeboard swath-segment. weighted combination of the lead sigmas in this beam for this swath segment source: ATBD section 5 origname: fbswath_refsurf_sigma fullnamepath: /freeboard_swath_segment/fbswath_refsurf_sigma coordinates: freeboard_swath_segment_delta_time freeboard_swath_segment_latitude freeboard_swath_segment_longitude |
| freeboard_swath_segment_fbswath_fb_width: | Array of 32 bit Reals [freeboard_swath_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Width of freeboard swath-segment description: Width of freeboard swath-segment source: ATBD section 5 origname: fbswath_fb_width fullnamepath: /freeboard_swath_segment/fbswath_fb_width coordinates: freeboard_swath_segment_delta_time freeboard_swath_segment_latitude freeboard_swath_segment_longitude |
| freeboard_swath_segment_fbswath_lead_ndx_gt3l: | Array of 32 bit Integers [freeboard_swath_segment_delta_time = 0..48] units: 1 contentType: referenceInformation long_name: Swath index gt3l first lead description: 1-based index to first /gt3l/leads lead used in this swath's reference surface source: ATBD section 5 origname: fbswath_lead_ndx_gt3l fullnamepath: /freeboard_swath_segment/fbswath_lead_ndx_gt3l coordinates: freeboard_swath_segment_delta_time freeboard_swath_segment_latitude freeboard_swath_segment_longitude |
| freeboard_swath_segment_gt2l_swath_freeboard_fbswath_fb_height: | Array of 32 bit Reals [freeboard_swath_segment_gt2l_swath_freeboard_delta_time = 0..6316] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Freeboard estimate description: estimate of the freeboard height based on entire swath source: ATBD section 5 origname: fbswath_fb_height fullnamepath: /freeboard_swath_segment/gt2l/swath_freeboard/fbswath_fb_height coordinates: freeboard_swath_segment_gt2l_swath_freeboard_delta_time freeboard_swath_segment_gt2l_swath_freeboard_latitude freeboard_swath_segment_gt2l_swath_freeboard_longitude |
| freeboard_swath_segment_gt2l_swath_freeboard_height_segment_id: | Array of 32 bit Integers [freeboard_swath_segment_gt2l_swath_freeboard_delta_time = 0..6316] units: 1 contentType: referenceInformation long_name: Identifier of each height segment description: Identifier of each height segment source: Sea Ice ATBD origname: height_segment_id fullnamepath: /freeboard_swath_segment/gt2l/swath_freeboard/height_segment_id coordinates: freeboard_swath_segment_gt2l_swath_freeboard_delta_time freeboard_swath_segment_gt2l_swath_freeboard_latitude freeboard_swath_segment_gt2l_swath_freeboard_longitude |
| freeboard_swath_segment_gt2l_swath_freeboard_fbswath_fb_confidence: | Array of 32 bit Reals [freeboard_swath_segment_gt2l_swath_freeboard_delta_time = 0..6316] _FillValue: 3.402823466e+38 units: 1 contentType: referenceInformation long_name: Freeboard confidence description: Confidence level in the freeboard estimate source: ATBD section 5 origname: fbswath_fb_confidence fullnamepath: /freeboard_swath_segment/gt2l/swath_freeboard/fbswath_fb_confidence coordinates: freeboard_swath_segment_gt2l_swath_freeboard_delta_time freeboard_swath_segment_gt2l_swath_freeboard_latitude freeboard_swath_segment_gt2l_swath_freeboard_longitude |
| freeboard_swath_segment_gt2l_swath_freeboard_longitude: | Array of 64 bit Reals [freeboard_swath_segment_gt2l_swath_freeboard_delta_time = 0..6316] contentType: referenceInformation long_name: Longitude _FillValue: 1.7976931348623157e+308 units: degrees_east standard_name: longitude description: Longitude, WGS84, East=+,Lon of segment center source: section 3.1.9 valid_min: -180.00000000000000 valid_max: 180.00000000000000 origname: longitude fullnamepath: /freeboard_swath_segment/gt2l/swath_freeboard/longitude coordinates: freeboard_swath_segment_gt2l_swath_freeboard_delta_time freeboard_swath_segment_gt2l_swath_freeboard_latitude |
| freeboard_swath_segment_gt2l_swath_freeboard_latitude: | Array of 64 bit Reals [freeboard_swath_segment_gt2l_swath_freeboard_delta_time = 0..6316] _FillValue: 1.7976931348623157e+308 units: degrees_north contentType: referenceInformation long_name: Latitude standard_name: latitude description: Latitude, WGS84, North=+, Lat of segment center source: section 3.1.9 valid_min: -90.000000000000000 valid_max: 90.000000000000000 origname: latitude fullnamepath: /freeboard_swath_segment/gt2l/swath_freeboard/latitude coordinates: freeboard_swath_segment_gt2l_swath_freeboard_delta_time freeboard_swath_segment_gt2l_swath_freeboard_longitude |
| freeboard_swath_segment_gt2l_swath_freeboard_fbswath_fb_sigma: | Array of 32 bit Reals [freeboard_swath_segment_gt2l_swath_freeboard_delta_time = 0..6316] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Freeboard sigma estimate description: Sigma ( standard deviation) estimate of the freeboard height source: ATBD section 5 origname: fbswath_fb_sigma fullnamepath: /freeboard_swath_segment/gt2l/swath_freeboard/fbswath_fb_sigma coordinates: freeboard_swath_segment_gt2l_swath_freeboard_delta_time freeboard_swath_segment_gt2l_swath_freeboard_latitude freeboard_swath_segment_gt2l_swath_freeboard_longitude |
| freeboard_swath_segment_gt2l_swath_freeboard_fbswath_fb_quality_flag: | Array of 16 bit Integers [freeboard_swath_segment_gt2l_swath_freeboard_delta_time = 0..6316] units: 1 contentType: referenceInformation long_name: Flag describing the quality of the freeboard estimate description: Flag describing the quality of the results of the along-track fit. (-1=height value is invalid; 1=ngrid_w < wlength/2; 2=ngrid_w >= wlength/2; 3=ngrid_dt < dtlength/2; 4=ngrid_dt >= dtlength/2; 5=ngrid_dt >= (dtlength-2): where 1 is best and 5 is poor). source: ATBD section 5 flag_meanings: invalid best high med low poor flag_values: -1, 1, 2, 3, 4, 5 valid_min: -1 valid_max: 5 origname: fbswath_fb_quality_flag fullnamepath: /freeboard_swath_segment/gt2l/swath_freeboard/fbswath_fb_quality_flag coordinates: freeboard_swath_segment_gt2l_swath_freeboard_delta_time freeboard_swath_segment_gt2l_swath_freeboard_latitude freeboard_swath_segment_gt2l_swath_freeboard_longitude |
| freeboard_swath_segment_gt2l_swath_freeboard_fbswath_ndx: | Array of 32 bit Integers [freeboard_swath_segment_gt2l_swath_freeboard_delta_time = 0..6316] units: 1 contentType: referenceInformation long_name: Index to freeboard swath segment description: The 1-based fbswath_nx identifies the swath associated with each element. There are the same number of elements in the group /freeboard_swath_segment and in each of the /GTx/freeboard_beam_segment group. The fbswath_nx identifies the fbswath_refsurf_height used to compute the fbswath_fb_height. It is the same index number that idenitifies the beam_refsurf_height to its swath and the beam_refsurf_height used to computed the beam_fb_height. source: ATBD section 5 origname: fbswath_ndx fullnamepath: /freeboard_swath_segment/gt2l/swath_freeboard/fbswath_ndx coordinates: freeboard_swath_segment_gt2l_swath_freeboard_delta_time freeboard_swath_segment_gt2l_swath_freeboard_latitude freeboard_swath_segment_gt2l_swath_freeboard_longitude |
| freeboard_swath_segment_fbswath_lead_n_gt1r: | Array of 32 bit Integers [freeboard_swath_segment_delta_time = 0..48] units: 1 contentType: referenceInformation long_name: Number of gt1r leads description: Number of gt1r leads used for this swath's reference surface source: Sea Ice ATBD origname: fbswath_lead_n_gt1r fullnamepath: /freeboard_swath_segment/fbswath_lead_n_gt1r coordinates: freeboard_swath_segment_delta_time freeboard_swath_segment_latitude freeboard_swath_segment_longitude |
| freeboard_swath_segment_gt3r_swath_freeboard_fbswath_fb_height: | Array of 32 bit Reals [freeboard_swath_segment_gt3r_swath_freeboard_delta_time = 0..6824] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Freeboard estimate description: estimate of the freeboard height based on entire swath source: ATBD section 5 origname: fbswath_fb_height fullnamepath: /freeboard_swath_segment/gt3r/swath_freeboard/fbswath_fb_height coordinates: freeboard_swath_segment_gt3r_swath_freeboard_delta_time freeboard_swath_segment_gt3r_swath_freeboard_latitude freeboard_swath_segment_gt3r_swath_freeboard_longitude |
| freeboard_swath_segment_gt3r_swath_freeboard_height_segment_id: | Array of 32 bit Integers [freeboard_swath_segment_gt3r_swath_freeboard_delta_time = 0..6824] units: 1 contentType: referenceInformation long_name: Identifier of each height segment description: Identifier of each height segment source: Sea Ice ATBD origname: height_segment_id fullnamepath: /freeboard_swath_segment/gt3r/swath_freeboard/height_segment_id coordinates: freeboard_swath_segment_gt3r_swath_freeboard_delta_time freeboard_swath_segment_gt3r_swath_freeboard_latitude freeboard_swath_segment_gt3r_swath_freeboard_longitude |
| freeboard_swath_segment_gt3r_swath_freeboard_fbswath_fb_confidence: | Array of 32 bit Reals [freeboard_swath_segment_gt3r_swath_freeboard_delta_time = 0..6824] _FillValue: 3.402823466e+38 units: 1 contentType: referenceInformation long_name: Freeboard confidence description: Confidence level in the freeboard estimate source: ATBD section 5 origname: fbswath_fb_confidence fullnamepath: /freeboard_swath_segment/gt3r/swath_freeboard/fbswath_fb_confidence coordinates: freeboard_swath_segment_gt3r_swath_freeboard_delta_time freeboard_swath_segment_gt3r_swath_freeboard_latitude freeboard_swath_segment_gt3r_swath_freeboard_longitude |
| freeboard_swath_segment_gt3r_swath_freeboard_longitude: | Array of 64 bit Reals [freeboard_swath_segment_gt3r_swath_freeboard_delta_time = 0..6824] contentType: referenceInformation long_name: Longitude _FillValue: 1.7976931348623157e+308 units: degrees_east standard_name: longitude description: Longitude, WGS84, East=+,Lon of segment center source: section 3.1.9 valid_min: -180.00000000000000 valid_max: 180.00000000000000 origname: longitude fullnamepath: /freeboard_swath_segment/gt3r/swath_freeboard/longitude coordinates: freeboard_swath_segment_gt3r_swath_freeboard_delta_time freeboard_swath_segment_gt3r_swath_freeboard_latitude |
| freeboard_swath_segment_gt3r_swath_freeboard_latitude: | Array of 64 bit Reals [freeboard_swath_segment_gt3r_swath_freeboard_delta_time = 0..6824] _FillValue: 1.7976931348623157e+308 units: degrees_north contentType: referenceInformation long_name: Latitude standard_name: latitude description: Latitude, WGS84, North=+, Lat of segment center source: section 3.1.9 valid_min: -90.000000000000000 valid_max: 90.000000000000000 origname: latitude fullnamepath: /freeboard_swath_segment/gt3r/swath_freeboard/latitude coordinates: freeboard_swath_segment_gt3r_swath_freeboard_delta_time freeboard_swath_segment_gt3r_swath_freeboard_longitude |
| freeboard_swath_segment_gt3r_swath_freeboard_fbswath_fb_sigma: | Array of 32 bit Reals [freeboard_swath_segment_gt3r_swath_freeboard_delta_time = 0..6824] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Freeboard sigma estimate description: Sigma ( standard deviation) estimate of the freeboard height source: ATBD section 5 origname: fbswath_fb_sigma fullnamepath: /freeboard_swath_segment/gt3r/swath_freeboard/fbswath_fb_sigma coordinates: freeboard_swath_segment_gt3r_swath_freeboard_delta_time freeboard_swath_segment_gt3r_swath_freeboard_latitude freeboard_swath_segment_gt3r_swath_freeboard_longitude |
| freeboard_swath_segment_gt3r_swath_freeboard_fbswath_fb_quality_flag: | Array of 16 bit Integers [freeboard_swath_segment_gt3r_swath_freeboard_delta_time = 0..6824] units: 1 contentType: referenceInformation long_name: Flag describing the quality of the freeboard estimate description: Flag describing the quality of the results of the along-track fit. (-1=height value is invalid; 1=ngrid_w < wlength/2; 2=ngrid_w >= wlength/2; 3=ngrid_dt < dtlength/2; 4=ngrid_dt >= dtlength/2; 5=ngrid_dt >= (dtlength-2): where 1 is best and 5 is poor). source: ATBD section 5 flag_meanings: invalid best high med low poor flag_values: -1, 1, 2, 3, 4, 5 valid_min: -1 valid_max: 5 origname: fbswath_fb_quality_flag fullnamepath: /freeboard_swath_segment/gt3r/swath_freeboard/fbswath_fb_quality_flag coordinates: freeboard_swath_segment_gt3r_swath_freeboard_delta_time freeboard_swath_segment_gt3r_swath_freeboard_latitude freeboard_swath_segment_gt3r_swath_freeboard_longitude |
| freeboard_swath_segment_gt3r_swath_freeboard_fbswath_ndx: | Array of 32 bit Integers [freeboard_swath_segment_gt3r_swath_freeboard_delta_time = 0..6824] units: 1 contentType: referenceInformation long_name: Index to freeboard swath segment description: The 1-based fbswath_nx identifies the swath associated with each element. There are the same number of elements in the group /freeboard_swath_segment and in each of the /GTx/freeboard_beam_segment group. The fbswath_nx identifies the fbswath_refsurf_height used to compute the fbswath_fb_height. It is the same index number that idenitifies the beam_refsurf_height to its swath and the beam_refsurf_height used to computed the beam_fb_height. source: ATBD section 5 origname: fbswath_ndx fullnamepath: /freeboard_swath_segment/gt3r/swath_freeboard/fbswath_ndx coordinates: freeboard_swath_segment_gt3r_swath_freeboard_delta_time freeboard_swath_segment_gt3r_swath_freeboard_latitude freeboard_swath_segment_gt3r_swath_freeboard_longitude |
| quality_assessment_qa_granule_fail_reason: | Array of 32 bit Integers [FakeDim0 = 0..0] units: 1 contentType: qualityInformation long_name: Granule Failure Reason description: Flag indicating granule failure reason. 0=no failure; 1=processing error; 2=Insufficient output data was generated; 3=TBD Failure; 4=TBD_Failure; 5=other failure. source: Operations flag_meanings: no_failure PROCESS_ERROR INSUFFICIENT_OUTPUT failure_3 failure_4 OTHER_FAILURE flag_values: 0, 1, 2, 3, 4, 5 valid_min: 0 valid_max: 5 origname: qa_granule_fail_reason fullnamepath: /quality_assessment/qa_granule_fail_reason |
| quality_assessment_qa_granule_pass_fail: | Array of 32 bit Integers [FakeDim0 = 0..0] units: 1 contentType: qualityInformation long_name: Granule Pass Flag description: Flag indicating granule quality. 0=granule passes automatic QA. 1=granule fails automatic QA. source: Operations flag_meanings: PASS FAIL flag_values: 0, 1 valid_min: 0 valid_max: 1 origname: qa_granule_pass_fail fullnamepath: /quality_assessment/qa_granule_pass_fail |
| gt3l_freeboard_beam_segment_beam_refsurf_sigma: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: reference surface sigma description: Reference surface height sigma (standard devaition) - weighted combination of lead sigmas in this beam for this swath segment source: ATBD section 5 origname: beam_refsurf_sigma fullnamepath: /gt3l/freeboard_beam_segment/beam_refsurf_sigma coordinates: gt3l_freeboard_beam_segment_delta_time gt3l_freeboard_beam_segment_latitude gt3l_freeboard_beam_segment_longitude |
| gt3l_freeboard_beam_segment_beam_refsurf_alongtrack_slope: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: degrees contentType: modelResult long_name: reference surface along track slope description: Reference surface height along track slope source: ATBD section 5 origname: beam_refsurf_alongtrack_slope fullnamepath: /gt3l/freeboard_beam_segment/beam_refsurf_alongtrack_slope coordinates: gt3l_freeboard_beam_segment_delta_time gt3l_freeboard_beam_segment_latitude gt3l_freeboard_beam_segment_longitude |
| gt3l_freeboard_beam_segment_beam_lead_ndx: | Array of 32 bit Integers [gt3l_freeboard_beam_segment_delta_time = 0..48] units: 1 contentType: referenceInformation long_name: index first lead description: 1-based index to the first /GTx/leads lead used for this beam's reference surface. source: Sea Ice ATBD origname: beam_lead_ndx fullnamepath: /gt3l/freeboard_beam_segment/beam_lead_ndx coordinates: gt3l_freeboard_beam_segment_delta_time gt3l_freeboard_beam_segment_latitude gt3l_freeboard_beam_segment_longitude |
| gt3l_freeboard_beam_segment_beam_fb_height: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Beam Freeboard mean swath-segment description: Mean of the Freeboard height-segments in freeboard beam-segment source: ATBD section 5 origname: beam_fb_height fullnamepath: /gt3l/freeboard_beam_segment/beam_fb_height coordinates: gt3l_freeboard_beam_segment_delta_time gt3l_freeboard_beam_segment_latitude gt3l_freeboard_beam_segment_longitude |
| gt3l_freeboard_beam_segment_height_segments_msw_flag: | Array of 16 bit Integers [gt3l_freeboard_beam_segment_height_segments_delta_time = 0..6448] units: 1 contentType: modelResult long_name: multiple scattering warning flag description: Multiple Scattering warning flag. The multiple scattering warning flag (ATL09 parameter msw_flag) has values from -1 to 5 where zero means no multiple scattering and 5 the greatest. If no layers were detected, then msw_flag = 0. If blowing snow is detected and its estimated optical depth is greater than or equal to 0.5, then msw_flag = 5. If the blowing snow optical depth is less than 0.5, then msw_flag = 4. If no blowing snow is detected but there are cloud or aerosol layers detected, the msw_flag assumes values of 1 to 3 based on the height of the bottom of the lowest layer: < 1 km, msw_flag = 3; 1-3 km, msw_flag = 2; > 3km, msw_flag = 1. A value of -1 indicates that the signal to noise of the data was too low to reliably ascertain the presence of cloud or blowing snow. We expect values of -1 to occur only during daylight. source: ATL09 flag_meanings: cannot_determine no_layers layer_gt_3km layer_between_1_and_3_km layer_lt_1km blow_snow_od_lt_0.5 blow_snow_od_gt_0.5 flag_values: -1, 0, 1, 2, 3, 4, 5 valid_min: -1 valid_max: 5 origname: msw_flag fullnamepath: /gt3l/freeboard_beam_segment/height_segments/msw_flag coordinates: gt3l_freeboard_beam_segment_height_segments_delta_time gt3l_freeboard_beam_segment_height_segments_latitude gt3l_freeboard_beam_segment_height_segments_longitude |
| gt3l_freeboard_beam_segment_height_segments_cloud_flag_atm: | Array of 16 bit Integers [gt3l_freeboard_beam_segment_height_segments_delta_time = 0..6448] units: 1 long_name: cloud flag atm contentType: modelResult description: Number of layers found from the backscatter profile using the DDA layer finder source: ATL09 valid_min: 0 valid_max: 10 origname: cloud_flag_atm fullnamepath: /gt3l/freeboard_beam_segment/height_segments/cloud_flag_atm coordinates: gt3l_freeboard_beam_segment_height_segments_delta_time gt3l_freeboard_beam_segment_height_segments_latitude gt3l_freeboard_beam_segment_height_segments_longitude |
| gt3l_freeboard_beam_segment_height_segments_height_segment_length_seg: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_height_segments_delta_time = 0..6448] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: length of segment description: Along-track length of segment containing n_photons_actual ATL07 length_seg) source: Sea Ice ATBD origname: height_segment_length_seg fullnamepath: /gt3l/freeboard_beam_segment/height_segments/height_segment_length_seg coordinates: gt3l_freeboard_beam_segment_height_segments_delta_time gt3l_freeboard_beam_segment_height_segments_latitude gt3l_freeboard_beam_segment_height_segments_longitude |
| gt3l_freeboard_beam_segment_height_segments_height_segment_ib: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_height_segments_delta_time = 0..6448] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: inverted barometer effect description: Inverted barometer effect calculated from surface pressure source: ATBD section 4.2 origname: height_segment_ib fullnamepath: /gt3l/freeboard_beam_segment/height_segments/height_segment_ib coordinates: gt3l_freeboard_beam_segment_height_segments_delta_time gt3l_freeboard_beam_segment_height_segments_latitude gt3l_freeboard_beam_segment_height_segments_longitude |
| gt3l_freeboard_beam_segment_height_segments_bsnow_con: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_height_segments_delta_time = 0..6448] _FillValue: 3.402823466e+38 units: 1 contentType: modelResult long_name: Blowing snow confidence description: Blowing snow confidence source: ATL09 origname: bsnow_con fullnamepath: /gt3l/freeboard_beam_segment/height_segments/bsnow_con coordinates: gt3l_freeboard_beam_segment_height_segments_delta_time gt3l_freeboard_beam_segment_height_segments_latitude gt3l_freeboard_beam_segment_height_segments_longitude |
| gt3l_freeboard_beam_segment_height_segments_layer_flag: | Array of 16 bit Integers [gt3l_freeboard_beam_segment_height_segments_delta_time = 0..6448] units: 1 contentType: modelResult long_name: consolidated cloud flag description: This flag is a combination of multiple flags (cloud_flag_atm, cloud_flag_asr, and bsnow_con) and takes daytime/nighttime into consideration. A value of 1 means clouds or blowing snow are likely present. A value of 0 indicates the likely absence of clouds or blowing snow. source: ATL09 flag_meanings: likely_clear likely_cloudy flag_values: 0, 1 valid_min: 0 valid_max: 1 origname: layer_flag fullnamepath: /gt3l/freeboard_beam_segment/height_segments/layer_flag coordinates: gt3l_freeboard_beam_segment_height_segments_delta_time gt3l_freeboard_beam_segment_height_segments_latitude gt3l_freeboard_beam_segment_height_segments_longitude |
| gt3l_freeboard_beam_segment_height_segments_backgr_calc: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_height_segments_delta_time = 0..6448] _FillValue: 3.402823466e+38 units: hz contentType: modelResult long_name: background count rate calculated description: Calculated background count rate based on sun angle, surface slope, unit reflectance source: ATL07 origname: backgr_calc fullnamepath: /gt3l/freeboard_beam_segment/height_segments/backgr_calc coordinates: gt3l_freeboard_beam_segment_height_segments_delta_time gt3l_freeboard_beam_segment_height_segments_latitude gt3l_freeboard_beam_segment_height_segments_longitude |
| gt3l_freeboard_beam_segment_height_segments_bsnow_h: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_height_segments_delta_time = 0..6448] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Blowing snow top height description: Blowing snow layer top height source: ATL09 origname: bsnow_h fullnamepath: /gt3l/freeboard_beam_segment/height_segments/bsnow_h coordinates: gt3l_freeboard_beam_segment_height_segments_delta_time gt3l_freeboard_beam_segment_height_segments_latitude gt3l_freeboard_beam_segment_height_segments_longitude |
| gt3l_freeboard_beam_segment_height_segments_longitude: | Array of 64 bit Reals [gt3l_freeboard_beam_segment_height_segments_delta_time = 0..6448] units: degrees_east contentType: referenceInformation long_name: Longitude standard_name: longitude description: Longitude, WGS84, East=+,Lon of segment center source: Sea Ice ATBD valid_min: -180.00000000000000 valid_max: 180.00000000000000 origname: longitude fullnamepath: /gt3l/freeboard_beam_segment/height_segments/longitude coordinates: gt3l_freeboard_beam_segment_height_segments_delta_time gt3l_freeboard_beam_segment_height_segments_latitude |
| gt3l_freeboard_beam_segment_height_segments_background_r_norm: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_height_segments_delta_time = 0..6448] _FillValue: 3.402823466e+38 units: hz contentType: modelResult long_name: normalized background (50 shot) description: Background rate normalized to a fixed solar elevation angle source: ATL07 origname: background_r_norm fullnamepath: /gt3l/freeboard_beam_segment/height_segments/background_r_norm coordinates: gt3l_freeboard_beam_segment_height_segments_delta_time gt3l_freeboard_beam_segment_height_segments_latitude gt3l_freeboard_beam_segment_height_segments_longitude |
| gt3l_freeboard_beam_segment_height_segments_latitude: | Array of 64 bit Reals [gt3l_freeboard_beam_segment_height_segments_delta_time = 0..6448] units: degrees_north contentType: referenceInformation long_name: Latitude standard_name: latitude description: Latitude, WGS84, North=+, Lat of segment center source: Sea Ice ATBD valid_min: -90.000000000000000 valid_max: 90.000000000000000 origname: latitude fullnamepath: /gt3l/freeboard_beam_segment/height_segments/latitude coordinates: gt3l_freeboard_beam_segment_height_segments_delta_time gt3l_freeboard_beam_segment_height_segments_longitude |
| gt3l_freeboard_beam_segment_height_segments_ice_conc: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_height_segments_delta_time = 0..6448] _FillValue: 3.402823466e+38 units: 1 contentType: modelResult long_name: sea ice concentration description: Sea ice concentration percentage source: ATL07/ANC31 origname: ice_conc fullnamepath: /gt3l/freeboard_beam_segment/height_segments/ice_conc coordinates: gt3l_freeboard_beam_segment_height_segments_delta_time gt3l_freeboard_beam_segment_height_segments_latitude gt3l_freeboard_beam_segment_height_segments_longitude |
| gt3l_freeboard_beam_segment_height_segments_cloud_flag_asr: | Array of 16 bit Integers [gt3l_freeboard_beam_segment_height_segments_delta_time = 0..6448] units: 1 contentType: modelResult long_name: cloud flag asr description: Cloud flag (probability) from apparent surface reflectance. 0=clear with high confidence; 1=clear with medium confidence; 2=clear with low confidence; 3=cloudy with low confidence; 4=cloudy with medium confidence; 5=cloudy with high confidence; 6=unknown source: ATL09 flag_meanings: clear_with_high_confidence clear_with_medium_confidence clear_with_low_confidence cloudy_with_low_confidence cloudy_with_medium_confidence cloudy_with_high_confidence unknown flag_values: 0, 1, 2, 3, 4, 5, 6 valid_min: 0 valid_max: 6 origname: cloud_flag_asr fullnamepath: /gt3l/freeboard_beam_segment/height_segments/cloud_flag_asr coordinates: gt3l_freeboard_beam_segment_height_segments_delta_time gt3l_freeboard_beam_segment_height_segments_latitude gt3l_freeboard_beam_segment_height_segments_longitude |
| gt3l_freeboard_beam_segment_height_segments_height_segment_ssh_flag: | Array of 16 bit Integers [gt3l_freeboard_beam_segment_height_segments_delta_time = 0..6448] units: 1 contentType: referenceInformation long_name: Sea Surface Height Flag description: Identifiesthe height segments that are candidates for use as sea surface reference in freeboard calculations in ATL10. The flags are set as follows: 0 = sea ice; 1 = sea surface source: Sea Ice ATBD flag_meanings: sea_ice ice_surface flag_values: 0, 1 valid_min: 0 valid_max: 1 origname: height_segment_ssh_flag fullnamepath: /gt3l/freeboard_beam_segment/height_segments/height_segment_ssh_flag coordinates: gt3l_freeboard_beam_segment_height_segments_delta_time gt3l_freeboard_beam_segment_height_segments_latitude gt3l_freeboard_beam_segment_height_segments_longitude |
| gt3l_freeboard_beam_segment_height_segments_height_segment_surf_sigma: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_height_segments_delta_time = 0..6448] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: h surface sigma description: Sigma (standard deviation) estimate of the surface height (ATL07 h_surface_error) source: Sea Ice ATBD origname: height_segment_surf_sigma fullnamepath: /gt3l/freeboard_beam_segment/height_segments/height_segment_surf_sigma coordinates: gt3l_freeboard_beam_segment_height_segments_delta_time gt3l_freeboard_beam_segment_height_segments_latitude gt3l_freeboard_beam_segment_height_segments_longitude |
| gt3l_freeboard_beam_segment_height_segments_backgr_r_200: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_height_segments_delta_time = 0..6448] _FillValue: 3.402823466e+38 units: hz contentType: modelResult long_name: background rate 200 hz description: Background count rate, averaged over the segment based on ATLAS 50 pulse counts source: ATL09 origname: backgr_r_200 fullnamepath: /gt3l/freeboard_beam_segment/height_segments/backgr_r_200 coordinates: gt3l_freeboard_beam_segment_height_segments_delta_time gt3l_freeboard_beam_segment_height_segments_latitude gt3l_freeboard_beam_segment_height_segments_longitude |
| gt3l_freeboard_beam_segment_height_segments_height_segment_height: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_height_segments_delta_time = 0..6448] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: height of segment surface description: Mean height from along-track segment fit detremined by the sea ice algorithm(ATL07 h_si) source: Sea Ice ATBD origname: height_segment_height fullnamepath: /gt3l/freeboard_beam_segment/height_segments/height_segment_height coordinates: gt3l_freeboard_beam_segment_height_segments_delta_time gt3l_freeboard_beam_segment_height_segments_latitude gt3l_freeboard_beam_segment_height_segments_longitude |
| gt3l_freeboard_beam_segment_height_segments_height_segment_type: | Array of 16 bit Integers [gt3l_freeboard_beam_segment_height_segments_delta_time = 0..6448] units: 1 contentType: referenceInformation long_name: Segment surface type description: Value that indicates segment surface type as sea ice or different types of sea surface. 0=cloud covered: rsurf source: ATBD section 4.3 flag_meanings: cloud_covered other specular_lead_low_w_bkg specular_lead_low specular_lead_high_w_bkg specular_lead_high dark_lead_smooth_w_bkg dark_lead_smooth dark_lead_rough_w_bkg dark_lead_rough flag_values: 0 valid_min: 0 valid_max: 9 origname: height_segment_type fullnamepath: /gt3l/freeboard_beam_segment/height_segments/height_segment_type coordinates: gt3l_freeboard_beam_segment_height_segments_delta_time gt3l_freeboard_beam_segment_height_segments_latitude gt3l_freeboard_beam_segment_height_segments_longitude |
| gt3l_freeboard_beam_segment_height_segments_height_segment_confidence: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_height_segments_delta_time = 0..6448] _FillValue: 3.402823466e+38 units: 1 contentType: modelResult long_name: Surface height confidence description: Confidence level in the surface height estimate based on the number of photons; the background noise rate; and the error analysis (ATL07 h_confidence) source: Sea Ice ATBD origname: height_segment_confidence fullnamepath: /gt3l/freeboard_beam_segment/height_segments/height_segment_confidence coordinates: gt3l_freeboard_beam_segment_height_segments_delta_time gt3l_freeboard_beam_segment_height_segments_latitude gt3l_freeboard_beam_segment_height_segments_longitude |
| gt3l_freeboard_beam_segment_height_segments_asr_25: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_height_segments_delta_time = 0..6448] _FillValue: 3.402823466e+38 units: 1 contentType: modelResult long_name: Apparent surface reflectance at 25 hz description: Apparent surface reflectance at 25 hz, average to the sea ice segment source: ATL07 origname: asr_25 fullnamepath: /gt3l/freeboard_beam_segment/height_segments/asr_25 coordinates: gt3l_freeboard_beam_segment_height_segments_delta_time gt3l_freeboard_beam_segment_height_segments_latitude gt3l_freeboard_beam_segment_height_segments_longitude |
| gt3l_freeboard_beam_segment_height_segments_height_segment_w_gaussian: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_height_segments_delta_time = 0..6448] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: width of best fit gaussian description: Width of best fit gaussian (ATL07 w_gaussian) source: Sea Ice ATBD origname: height_segment_w_gaussian fullnamepath: /gt3l/freeboard_beam_segment/height_segments/height_segment_w_gaussian coordinates: gt3l_freeboard_beam_segment_height_segments_delta_time gt3l_freeboard_beam_segment_height_segments_latitude gt3l_freeboard_beam_segment_height_segments_longitude |
| gt3l_freeboard_beam_segment_height_segments_photon_rate: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_height_segments_delta_time = 0..6448] _FillValue: 3.402823466e+38 units: 1 contentType: modelResult long_name: photon rate description: Photon count rate, averaged over sea ice segment. source: ATL07 origname: photon_rate fullnamepath: /gt3l/freeboard_beam_segment/height_segments/photon_rate coordinates: gt3l_freeboard_beam_segment_height_segments_delta_time gt3l_freeboard_beam_segment_height_segments_latitude gt3l_freeboard_beam_segment_height_segments_longitude |
| gt3l_freeboard_beam_segment_height_segments_backgr_r_25: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_height_segments_delta_time = 0..6448] _FillValue: 3.402823466e+38 units: hz contentType: modelResult long_name: background rate 25 hz description: Background count rate, averaged over the segment based on 25 hz atmosphere source: ATL09 origname: backgr_r_25 fullnamepath: /gt3l/freeboard_beam_segment/height_segments/backgr_r_25 coordinates: gt3l_freeboard_beam_segment_height_segments_delta_time gt3l_freeboard_beam_segment_height_segments_latitude gt3l_freeboard_beam_segment_height_segments_longitude |
| gt3l_freeboard_beam_segment_height_segments_height_segment_rms: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_height_segments_delta_time = 0..6448] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: height rms description: RMS difference between sea ice modeled and observed photon height distribution(ATL07 h_rms) source: Sea Ice ATBD origname: height_segment_rms fullnamepath: /gt3l/freeboard_beam_segment/height_segments/height_segment_rms coordinates: gt3l_freeboard_beam_segment_height_segments_delta_time gt3l_freeboard_beam_segment_height_segments_latitude gt3l_freeboard_beam_segment_height_segments_longitude |
| gt3l_freeboard_beam_segment_beam_refsurf_interp_flag: | Array of 16 bit Integers [gt3l_freeboard_beam_segment_delta_time = 0..48] units: 1 long_name: reference surface interpolation flag description: Identifies segments with reference surface height filled through interpolation. -1 = no valid refrence surface was determined; 0= refsur computed from leads in this swath; 1 = reference surface inferred from data not in this swath; 2 = previous or next adjacent reference surface was used; 3 = filled based on the the upper height minus an offset source: ATBD section 5 flag_meanings: no_surf leads_in_swath inferred neighbor_used upper_height_minus_offset flag_values: -1, 0, 1, 2, 3 valid_min: -1 valid_max: 3 contentType: referenceInformation origname: beam_refsurf_interp_flag fullnamepath: /gt3l/freeboard_beam_segment/beam_refsurf_interp_flag coordinates: gt3l_freeboard_beam_segment_delta_time gt3l_freeboard_beam_segment_latitude gt3l_freeboard_beam_segment_longitude |
| gt3l_freeboard_beam_segment_longitude: | Array of 64 bit Reals [gt3l_freeboard_beam_segment_delta_time = 0..48] units: degrees_east contentType: referenceInformation long_name: Center longitude of freeboard swath-segment standard_name: longitude description: Center longitude of freeboard swath-segment (mean of all freeboard longitudes) source: ATBD section 5 origname: longitude fullnamepath: /gt3l/freeboard_beam_segment/longitude coordinates: gt3l_freeboard_beam_segment_delta_time gt3l_freeboard_beam_segment_latitude |
| gt3l_freeboard_beam_segment_beam_refsurf_height: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: reference surface mean description: Reference surface height -weighted combination of leads in this beam for this swath segment source: ATBD section 5 origname: beam_refsurf_height fullnamepath: /gt3l/freeboard_beam_segment/beam_refsurf_height coordinates: gt3l_freeboard_beam_segment_delta_time gt3l_freeboard_beam_segment_latitude gt3l_freeboard_beam_segment_longitude |
| gt3l_freeboard_beam_segment_latitude: | Array of 64 bit Reals [gt3l_freeboard_beam_segment_delta_time = 0..48] units: degrees_north contentType: referenceInformation long_name: Center latitude of freeboard swath-segment standard_name: latitude description: Center latitude of freeboard swath-segment (mean of all freeboard latitudes) source: ATBD section 5 origname: latitude fullnamepath: /gt3l/freeboard_beam_segment/latitude coordinates: gt3l_freeboard_beam_segment_delta_time gt3l_freeboard_beam_segment_longitude |
| gt3l_freeboard_beam_segment_beam_freeboard_height_segment_id: | Array of 32 bit Integers [gt3l_freeboard_beam_segment_beam_freeboard_delta_time = 0..6448] units: 1 long_name: Identifier of each height segment description: Identifier of each height segment source: Sea Ice ATBD contentType: referenceInformation origname: height_segment_id fullnamepath: /gt3l/freeboard_beam_segment/beam_freeboard/height_segment_id coordinates: gt3l_freeboard_beam_segment_beam_freeboard_delta_time gt3l_freeboard_beam_segment_beam_freeboard_latitude gt3l_freeboard_beam_segment_beam_freeboard_longitude |
| gt3l_freeboard_beam_segment_beam_freeboard_beam_fb_height: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_beam_freeboard_delta_time = 0..6448] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Freeboard estimate description: Estimate of the freeboard height based on the beam h reference source: ATBD section 5 origname: beam_fb_height fullnamepath: /gt3l/freeboard_beam_segment/beam_freeboard/beam_fb_height coordinates: gt3l_freeboard_beam_segment_beam_freeboard_delta_time gt3l_freeboard_beam_segment_beam_freeboard_latitude gt3l_freeboard_beam_segment_beam_freeboard_longitude |
| gt3l_freeboard_beam_segment_beam_freeboard_beam_refsur_ndx: | Array of 32 bit Integers [gt3l_freeboard_beam_segment_beam_freeboard_delta_time = 0..6448] units: 1 contentType: referenceInformation long_name: Index to beam refsur description: 1-based index to reference surface used for this freeboard height. Its value is identical to the fbswath_ndx. This index also idenifies the swath segment with which the beam freeboard associated. source: ATBD section 5 origname: beam_refsur_ndx fullnamepath: /gt3l/freeboard_beam_segment/beam_freeboard/beam_refsur_ndx coordinates: gt3l_freeboard_beam_segment_beam_freeboard_delta_time gt3l_freeboard_beam_segment_beam_freeboard_latitude gt3l_freeboard_beam_segment_beam_freeboard_longitude |
| gt3l_freeboard_beam_segment_beam_freeboard_seg_dist_x: | Array of 64 bit Reals [gt3l_freeboard_beam_segment_beam_freeboard_delta_time = 0..6448] units: meters contentType: physicalMeasurement long_name: Along Track Distance description: Along-track distance from the equator crossing to the segment center. source: Sea Ice ATBD origname: seg_dist_x fullnamepath: /gt3l/freeboard_beam_segment/beam_freeboard/seg_dist_x coordinates: gt3l_freeboard_beam_segment_beam_freeboard_delta_time gt3l_freeboard_beam_segment_beam_freeboard_latitude gt3l_freeboard_beam_segment_beam_freeboard_longitude |
| gt3l_freeboard_beam_segment_beam_freeboard_longitude: | Array of 64 bit Reals [gt3l_freeboard_beam_segment_beam_freeboard_delta_time = 0..6448] units: degrees_east contentType: referenceInformation long_name: Longitude standard_name: longitude description: Longitude, WGS84, East=+,Lon of segment center source: Sea Ice ATBD valid_min: -180.00000000000000 valid_max: 180.00000000000000 origname: longitude fullnamepath: /gt3l/freeboard_beam_segment/beam_freeboard/longitude coordinates: gt3l_freeboard_beam_segment_beam_freeboard_delta_time gt3l_freeboard_beam_segment_beam_freeboard_latitude |
| gt3l_freeboard_beam_segment_beam_freeboard_latitude: | Array of 64 bit Reals [gt3l_freeboard_beam_segment_beam_freeboard_delta_time = 0..6448] units: degrees_north contentType: referenceInformation long_name: Latitude standard_name: latitude description: Latitude, WGS84, North=+, Lat of segment center source: Sea Ice ATBD valid_min: -90.000000000000000 valid_max: 90.000000000000000 origname: latitude fullnamepath: /gt3l/freeboard_beam_segment/beam_freeboard/latitude coordinates: gt3l_freeboard_beam_segment_beam_freeboard_delta_time gt3l_freeboard_beam_segment_beam_freeboard_longitude |
| gt3l_freeboard_beam_segment_beam_freeboard_geoseg_beg: | Array of 32 bit Integers [gt3l_freeboard_beam_segment_beam_freeboard_delta_time = 0..6448] units: 1 contentType: referenceInformation long_name: Beginning GEOSEG description: Geolocation segment (geoseg) ID associated with the first photon used in this sea ice segment source: Sea Ice ATBD origname: geoseg_beg fullnamepath: /gt3l/freeboard_beam_segment/beam_freeboard/geoseg_beg coordinates: gt3l_freeboard_beam_segment_beam_freeboard_delta_time gt3l_freeboard_beam_segment_beam_freeboard_latitude gt3l_freeboard_beam_segment_beam_freeboard_longitude |
| gt3l_freeboard_beam_segment_beam_freeboard_beam_fb_confidence: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_beam_freeboard_delta_time = 0..6448] _FillValue: 3.402823466e+38 units: 1 contentType: referenceInformation long_name: Freeboard confidence description: Confidence level in the freeboard estimate source: ATBD section 5 origname: beam_fb_confidence fullnamepath: /gt3l/freeboard_beam_segment/beam_freeboard/beam_fb_confidence coordinates: gt3l_freeboard_beam_segment_beam_freeboard_delta_time gt3l_freeboard_beam_segment_beam_freeboard_latitude gt3l_freeboard_beam_segment_beam_freeboard_longitude |
| gt3l_freeboard_beam_segment_beam_freeboard_beam_fb_sigma: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_beam_freeboard_delta_time = 0..6448] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Freeboard sigma estimate description: estimate of the sigma ( standard deviation) for each beam freeboard height source: ATBD section 5 origname: beam_fb_sigma fullnamepath: /gt3l/freeboard_beam_segment/beam_freeboard/beam_fb_sigma coordinates: gt3l_freeboard_beam_segment_beam_freeboard_delta_time gt3l_freeboard_beam_segment_beam_freeboard_latitude gt3l_freeboard_beam_segment_beam_freeboard_longitude |
| gt3l_freeboard_beam_segment_beam_freeboard_geoseg_end: | Array of 32 bit Integers [gt3l_freeboard_beam_segment_beam_freeboard_delta_time = 0..6448] units: 1 contentType: referenceInformation long_name: Ending GEOSEG description: Geolocation segment (geoseg) ID associated with the last photon used in this sea ice segment source: Sea Ice ATBD origname: geoseg_end fullnamepath: /gt3l/freeboard_beam_segment/beam_freeboard/geoseg_end coordinates: gt3l_freeboard_beam_segment_beam_freeboard_delta_time gt3l_freeboard_beam_segment_beam_freeboard_latitude gt3l_freeboard_beam_segment_beam_freeboard_longitude |
| gt3l_freeboard_beam_segment_beam_freeboard_beam_fb_quality_flag: | Array of 16 bit Integers [gt3l_freeboard_beam_segment_beam_freeboard_delta_time = 0..6448] units: 1 contentType: referenceInformation long_name: Flag describing the quality of the freeboard estimate description: Flag describing the quality of the results of the along-track fit. (-1=height value is invalid; 1=ngrid_w < wlength/2; 2=ngrid_w >= wlength/2; 3=ngrid_dt < dtlength/2; 4=ngrid_dt >= dtlength/2; 5=ngrid_dt >= (dtlength-2): where 1 is best and 5 is poor). source: ATBD section 5 flag_meanings: invalid best high med low poor flag_values: -1, 1, 2, 3, 4, 5 valid_min: -1 valid_max: 5 origname: beam_fb_quality_flag fullnamepath: /gt3l/freeboard_beam_segment/beam_freeboard/beam_fb_quality_flag coordinates: gt3l_freeboard_beam_segment_beam_freeboard_delta_time gt3l_freeboard_beam_segment_beam_freeboard_latitude gt3l_freeboard_beam_segment_beam_freeboard_longitude |
| gt3l_freeboard_beam_segment_beam_fb_length: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Length ofbeam freeboard swath-segment description: Length of freeboard beam-segment source: ATBD section 5 origname: beam_fb_length fullnamepath: /gt3l/freeboard_beam_segment/beam_fb_length coordinates: gt3l_freeboard_beam_segment_delta_time gt3l_freeboard_beam_segment_latitude gt3l_freeboard_beam_segment_longitude |
| gt3l_freeboard_beam_segment_beam_fb_hist: | Array of 16 bit Integers [gt3l_freeboard_beam_segment_delta_time = 0..48][gt3l_freeboard_beam_segment_ds_si_hist_bins = 0..160] units: 1 contentType: referenceInformation long_name: Beam freeboard histogram description: Beam Freeboard (using beam fbswath reference surface height) histogram (distribution) for this freeboard beam-segment source: ATBD section 5 origname: beam_fb_hist fullnamepath: /gt3l/freeboard_beam_segment/beam_fb_hist coordinates: gt3l_freeboard_beam_segment_delta_time gt3l_freeboard_beam_segment_latitude gt3l_freeboard_beam_segment_longitude |
| gt3l_freeboard_beam_segment_geophysical_height_segment_dac: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_geophysical_delta_time = 0..6448] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: Dynamic Atmosphere Correction description: Dynamic Atmospheric Correction (DAC) includes inverted barometer (IB) effect (From ATL07) source: Sea Ice ATBD origname: height_segment_dac fullnamepath: /gt3l/freeboard_beam_segment/geophysical/height_segment_dac coordinates: gt3l_freeboard_beam_segment_geophysical_delta_time gt3l_freeboard_beam_segment_geophysical_latitude gt3l_freeboard_beam_segment_geophysical_longitude |
| gt3l_freeboard_beam_segment_geophysical_height_segment_tide_pole: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_geophysical_delta_time = 0..6448] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: Pole Tide description: Pole Tide -Rotational deformation due to polar motion (-1.5 to 1.5 cm). (From ATL07) source: Sea Ice ATBD origname: height_segment_tide_pole fullnamepath: /gt3l/freeboard_beam_segment/geophysical/height_segment_tide_pole coordinates: gt3l_freeboard_beam_segment_geophysical_delta_time gt3l_freeboard_beam_segment_geophysical_latitude gt3l_freeboard_beam_segment_geophysical_longitude |
| gt3l_freeboard_beam_segment_geophysical_longitude: | Array of 64 bit Reals [gt3l_freeboard_beam_segment_geophysical_delta_time = 0..6448] units: degrees_east contentType: referenceInformation long_name: Longitude standard_name: longitude description: Longitude, WGS84, East=+,Lon of segment center source: Sea Ice ATBD valid_min: -180.00000000000000 valid_max: 180.00000000000000 origname: longitude fullnamepath: /gt3l/freeboard_beam_segment/geophysical/longitude coordinates: gt3l_freeboard_beam_segment_geophysical_delta_time gt3l_freeboard_beam_segment_geophysical_latitude |
| gt3l_freeboard_beam_segment_geophysical_latitude: | Array of 64 bit Reals [gt3l_freeboard_beam_segment_geophysical_delta_time = 0..6448] units: degrees_north long_name: Latitude standard_name: latitude description: Latitude, WGS84, North=+, Lat of segment center source: Sea Ice ATBD valid_min: -90.000000000000000 valid_max: 90.000000000000000 contentType: referenceInformation origname: latitude fullnamepath: /gt3l/freeboard_beam_segment/geophysical/latitude coordinates: gt3l_freeboard_beam_segment_geophysical_delta_time gt3l_freeboard_beam_segment_geophysical_longitude |
| gt3l_freeboard_beam_segment_geophysical_height_segment_load: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_geophysical_delta_time = 0..6448] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: Load Tide description: Load Tide - Local displacement due to Ocean Loading (-6 to 0 cm).(From ATL07) source: Sea Ice ATBD origname: height_segment_load fullnamepath: /gt3l/freeboard_beam_segment/geophysical/height_segment_load coordinates: gt3l_freeboard_beam_segment_geophysical_delta_time gt3l_freeboard_beam_segment_geophysical_latitude gt3l_freeboard_beam_segment_geophysical_longitude |
| gt3l_freeboard_beam_segment_geophysical_height_segment_geoid: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_geophysical_delta_time = 0..6448] contentType: referenceInformation long_name: EGM2008 Geoid description: Geoid height above WGS-84 reference ellipsoid (range -107 to 86m), based on the EGM2008 model.(From ATL07) source: Sea Ice ATBD _FillValue: 3.402823466e+38 units: meters origname: height_segment_geoid fullnamepath: /gt3l/freeboard_beam_segment/geophysical/height_segment_geoid coordinates: gt3l_freeboard_beam_segment_geophysical_delta_time gt3l_freeboard_beam_segment_geophysical_latitude gt3l_freeboard_beam_segment_geophysical_longitude |
| gt3l_freeboard_beam_segment_geophysical_height_segment_ocean: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_geophysical_delta_time = 0..6448] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: Ocean Tide description: Ocean Tides including diurnal and semi-diurnal (harmonic analysis), and longer period tides (dynamic and self-consistent equilibrium) (From ATL07) source: Sea Ice ATBD origname: height_segment_ocean fullnamepath: /gt3l/freeboard_beam_segment/geophysical/height_segment_ocean coordinates: gt3l_freeboard_beam_segment_geophysical_delta_time gt3l_freeboard_beam_segment_geophysical_latitude gt3l_freeboard_beam_segment_geophysical_longitude |
| gt3l_freeboard_beam_segment_geophysical_height_segment_mss: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_geophysical_delta_time = 0..6448] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: Mean Sea Surface description: Mean sea surface height above WGS-84 reference ellipsoid. (From ATL07, includes tide-free geoid and mean dynamic topography source: Sea Ice ATBD origname: height_segment_mss fullnamepath: /gt3l/freeboard_beam_segment/geophysical/height_segment_mss coordinates: gt3l_freeboard_beam_segment_geophysical_delta_time gt3l_freeboard_beam_segment_geophysical_latitude gt3l_freeboard_beam_segment_geophysical_longitude |
| gt3l_freeboard_beam_segment_geophysical_height_segment_earth: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_geophysical_delta_time = 0..6448] contentType: referenceInformation long_name: Earth Tide description: Solid Earth Tide(From ATL07) source: Sea Ice ATBD _FillValue: 3.402823466e+38 units: meters origname: height_segment_earth fullnamepath: /gt3l/freeboard_beam_segment/geophysical/height_segment_earth coordinates: gt3l_freeboard_beam_segment_geophysical_delta_time gt3l_freeboard_beam_segment_geophysical_latitude gt3l_freeboard_beam_segment_geophysical_longitude |
| gt3l_freeboard_beam_segment_fbswath_ndx: | Array of 32 bit Integers [gt3l_freeboard_beam_segment_delta_time = 0..48] units: 1 contentType: referenceInformation long_name: Index to freeboard swath segment description: The 1-based fbswath_nx identifies the swath associated with each element. There are the same number of elements in the group /freeboard_swath_segment and in each of the /GTx/freeboard_beam_segment groups. The fbswath_nx identifies the fbswath_refsurf_height used to compute the fbswath_fb_height. It is the same index number that idenitifies the beam_refsurf_height to its swath and the beam_refsurf_height used to computed the beam_fb_height. source: ATBD section 5 origname: fbswath_ndx fullnamepath: /gt3l/freeboard_beam_segment/fbswath_ndx coordinates: gt3l_freeboard_beam_segment_delta_time gt3l_freeboard_beam_segment_latitude gt3l_freeboard_beam_segment_longitude |
| gt3l_freeboard_beam_segment_beam_fb_sigma: | Array of 32 bit Reals [gt3l_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Beam Freeboard standard deviation swath-segment description: Freeboard standard deviation of the height-segments in freeboard beam-segment source: ATBD section 5 origname: beam_fb_sigma fullnamepath: /gt3l/freeboard_beam_segment/beam_fb_sigma coordinates: gt3l_freeboard_beam_segment_delta_time gt3l_freeboard_beam_segment_latitude gt3l_freeboard_beam_segment_longitude |
| gt3l_freeboard_beam_segment_beam_lead_n: | Array of 32 bit Integers [gt3l_freeboard_beam_segment_delta_time = 0..48] units: 1 contentType: referenceInformation long_name: Number of leads description: Number of leads used for this beam reference surface source: Sea Ice ATBD origname: beam_lead_n fullnamepath: /gt3l/freeboard_beam_segment/beam_lead_n coordinates: gt3l_freeboard_beam_segment_delta_time gt3l_freeboard_beam_segment_latitude gt3l_freeboard_beam_segment_longitude |
| gt3l_leads_lead_height: | Array of 32 bit Reals [gt3l_leads_delta_time = 0..24] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Lead height description: Lead height - weighted mean of consective sea surface heights used for this lead source: ATBD section 5 origname: lead_height fullnamepath: /gt3l/leads/lead_height coordinates: gt3l_leads_delta_time gt3l_leads_latitude gt3l_leads_longitude |
| gt3l_leads_lead_length: | Array of 32 bit Reals [gt3l_leads_delta_time = 0..24] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Lead size description: Along-track length of this lead source: ATBD section 5 origname: lead_length fullnamepath: /gt3l/leads/lead_length coordinates: gt3l_leads_delta_time gt3l_leads_latitude gt3l_leads_longitude |
| gt3l_leads_lead_sigma: | Array of 32 bit Reals [gt3l_leads_delta_time = 0..24] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Lead sigma estimate description: Lead height sigma (standard deviation) estimate - weighted combination of sea surface height sigmas used as leads in this beam for this swath segment source: ATBD section 5 origname: lead_sigma fullnamepath: /gt3l/leads/lead_sigma coordinates: gt3l_leads_delta_time gt3l_leads_latitude gt3l_leads_longitude |
| gt3l_leads_longitude: | Array of 64 bit Reals [gt3l_leads_delta_time = 0..24] units: degrees_east contentType: referenceInformation long_name: Center longitude of lead standard_name: longitude description: Center longitude of lead (mean of all freeboard longitudes) source: ATBD section 5 origname: longitude fullnamepath: /gt3l/leads/longitude coordinates: gt3l_leads_delta_time gt3l_leads_latitude |
| gt3l_leads_latitude: | Array of 64 bit Reals [gt3l_leads_delta_time = 0..24] units: degrees_north contentType: referenceInformation long_name: Center latitude of lead standard_name: latitude description: Center latitude of lead (mean of all sea surface height latitudes) source: ATBD section 5 origname: latitude fullnamepath: /gt3l/leads/latitude coordinates: gt3l_leads_delta_time gt3l_leads_longitude |
| gt3l_leads_ssh_n: | Array of 32 bit Integers [gt3l_leads_delta_time = 0..24] units: 1 contentType: referenceInformation long_name: number of sea surface references description: Number of sea surface height segments used for this lead source: ATBD section 5 origname: ssh_n fullnamepath: /gt3l/leads/ssh_n coordinates: gt3l_leads_delta_time gt3l_leads_latitude gt3l_leads_longitude |
| gt3l_leads_ssh_ndx: | Array of 32 bit Integers [gt3l_leads_delta_time = 0..24] units: 1 contentType: referenceInformation long_name: index first sea surface description: 1-based index to the first freeboard element (i.e.first sea surface height segment) used for this lead source: Sea Ice ATBD origname: ssh_ndx fullnamepath: /gt3l/leads/ssh_ndx coordinates: gt3l_leads_delta_time gt3l_leads_latitude gt3l_leads_longitude |
| gt2l_freeboard_beam_segment_beam_refsurf_sigma: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: reference surface sigma description: Reference surface height sigma (standard devaition) - weighted combination of lead sigmas in this beam for this swath segment source: ATBD section 5 origname: beam_refsurf_sigma fullnamepath: /gt2l/freeboard_beam_segment/beam_refsurf_sigma coordinates: gt2l_freeboard_beam_segment_delta_time gt2l_freeboard_beam_segment_latitude gt2l_freeboard_beam_segment_longitude |
| gt2l_freeboard_beam_segment_beam_refsurf_alongtrack_slope: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: degrees contentType: modelResult long_name: reference surface along track slope description: Reference surface height along track slope source: ATBD section 5 origname: beam_refsurf_alongtrack_slope fullnamepath: /gt2l/freeboard_beam_segment/beam_refsurf_alongtrack_slope coordinates: gt2l_freeboard_beam_segment_delta_time gt2l_freeboard_beam_segment_latitude gt2l_freeboard_beam_segment_longitude |
| gt2l_freeboard_beam_segment_beam_lead_ndx: | Array of 32 bit Integers [gt2l_freeboard_beam_segment_delta_time = 0..48] units: 1 contentType: referenceInformation long_name: index first lead description: 1-based index to the first /GTx/leads lead used for this beam's reference surface. source: Sea Ice ATBD origname: beam_lead_ndx fullnamepath: /gt2l/freeboard_beam_segment/beam_lead_ndx coordinates: gt2l_freeboard_beam_segment_delta_time gt2l_freeboard_beam_segment_latitude gt2l_freeboard_beam_segment_longitude |
| gt2l_freeboard_beam_segment_beam_fb_height: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Beam Freeboard mean swath-segment description: Mean of the Freeboard height-segments in freeboard beam-segment source: ATBD section 5 origname: beam_fb_height fullnamepath: /gt2l/freeboard_beam_segment/beam_fb_height coordinates: gt2l_freeboard_beam_segment_delta_time gt2l_freeboard_beam_segment_latitude gt2l_freeboard_beam_segment_longitude |
| gt2l_freeboard_beam_segment_height_segments_msw_flag: | Array of 16 bit Integers [gt2l_freeboard_beam_segment_height_segments_delta_time = 0..6316] units: 1 contentType: modelResult long_name: multiple scattering warning flag description: Multiple Scattering warning flag. The multiple scattering warning flag (ATL09 parameter msw_flag) has values from -1 to 5 where zero means no multiple scattering and 5 the greatest. If no layers were detected, then msw_flag = 0. If blowing snow is detected and its estimated optical depth is greater than or equal to 0.5, then msw_flag = 5. If the blowing snow optical depth is less than 0.5, then msw_flag = 4. If no blowing snow is detected but there are cloud or aerosol layers detected, the msw_flag assumes values of 1 to 3 based on the height of the bottom of the lowest layer: < 1 km, msw_flag = 3; 1-3 km, msw_flag = 2; > 3km, msw_flag = 1. A value of -1 indicates that the signal to noise of the data was too low to reliably ascertain the presence of cloud or blowing snow. We expect values of -1 to occur only during daylight. source: ATL09 flag_meanings: cannot_determine no_layers layer_gt_3km layer_between_1_and_3_km layer_lt_1km blow_snow_od_lt_0.5 blow_snow_od_gt_0.5 flag_values: -1, 0, 1, 2, 3, 4, 5 valid_min: -1 valid_max: 5 origname: msw_flag fullnamepath: /gt2l/freeboard_beam_segment/height_segments/msw_flag coordinates: gt2l_freeboard_beam_segment_height_segments_delta_time gt2l_freeboard_beam_segment_height_segments_latitude gt2l_freeboard_beam_segment_height_segments_longitude |
| gt2l_freeboard_beam_segment_height_segments_cloud_flag_atm: | Array of 16 bit Integers [gt2l_freeboard_beam_segment_height_segments_delta_time = 0..6316] units: 1 long_name: cloud flag atm contentType: modelResult description: Number of layers found from the backscatter profile using the DDA layer finder source: ATL09 valid_min: 0 valid_max: 10 origname: cloud_flag_atm fullnamepath: /gt2l/freeboard_beam_segment/height_segments/cloud_flag_atm coordinates: gt2l_freeboard_beam_segment_height_segments_delta_time gt2l_freeboard_beam_segment_height_segments_latitude gt2l_freeboard_beam_segment_height_segments_longitude |
| gt2l_freeboard_beam_segment_height_segments_height_segment_length_seg: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_height_segments_delta_time = 0..6316] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: length of segment description: Along-track length of segment containing n_photons_actual ATL07 length_seg) source: Sea Ice ATBD origname: height_segment_length_seg fullnamepath: /gt2l/freeboard_beam_segment/height_segments/height_segment_length_seg coordinates: gt2l_freeboard_beam_segment_height_segments_delta_time gt2l_freeboard_beam_segment_height_segments_latitude gt2l_freeboard_beam_segment_height_segments_longitude |
| gt2l_freeboard_beam_segment_height_segments_height_segment_ib: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_height_segments_delta_time = 0..6316] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: inverted barometer effect description: Inverted barometer effect calculated from surface pressure source: ATBD section 4.2 origname: height_segment_ib fullnamepath: /gt2l/freeboard_beam_segment/height_segments/height_segment_ib coordinates: gt2l_freeboard_beam_segment_height_segments_delta_time gt2l_freeboard_beam_segment_height_segments_latitude gt2l_freeboard_beam_segment_height_segments_longitude |
| gt2l_freeboard_beam_segment_height_segments_bsnow_con: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_height_segments_delta_time = 0..6316] _FillValue: 3.402823466e+38 units: 1 contentType: modelResult long_name: Blowing snow confidence description: Blowing snow confidence source: ATL09 origname: bsnow_con fullnamepath: /gt2l/freeboard_beam_segment/height_segments/bsnow_con coordinates: gt2l_freeboard_beam_segment_height_segments_delta_time gt2l_freeboard_beam_segment_height_segments_latitude gt2l_freeboard_beam_segment_height_segments_longitude |
| gt2l_freeboard_beam_segment_height_segments_layer_flag: | Array of 16 bit Integers [gt2l_freeboard_beam_segment_height_segments_delta_time = 0..6316] units: 1 contentType: modelResult long_name: consolidated cloud flag description: This flag is a combination of multiple flags (cloud_flag_atm, cloud_flag_asr, and bsnow_con) and takes daytime/nighttime into consideration. A value of 1 means clouds or blowing snow are likely present. A value of 0 indicates the likely absence of clouds or blowing snow. source: ATL09 flag_meanings: likely_clear likely_cloudy flag_values: 0, 1 valid_min: 0 valid_max: 1 origname: layer_flag fullnamepath: /gt2l/freeboard_beam_segment/height_segments/layer_flag coordinates: gt2l_freeboard_beam_segment_height_segments_delta_time gt2l_freeboard_beam_segment_height_segments_latitude gt2l_freeboard_beam_segment_height_segments_longitude |
| gt2l_freeboard_beam_segment_height_segments_backgr_calc: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_height_segments_delta_time = 0..6316] _FillValue: 3.402823466e+38 units: hz contentType: modelResult long_name: background count rate calculated description: Calculated background count rate based on sun angle, surface slope, unit reflectance source: ATL07 origname: backgr_calc fullnamepath: /gt2l/freeboard_beam_segment/height_segments/backgr_calc coordinates: gt2l_freeboard_beam_segment_height_segments_delta_time gt2l_freeboard_beam_segment_height_segments_latitude gt2l_freeboard_beam_segment_height_segments_longitude |
| gt2l_freeboard_beam_segment_height_segments_bsnow_h: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_height_segments_delta_time = 0..6316] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Blowing snow top height description: Blowing snow layer top height source: ATL09 origname: bsnow_h fullnamepath: /gt2l/freeboard_beam_segment/height_segments/bsnow_h coordinates: gt2l_freeboard_beam_segment_height_segments_delta_time gt2l_freeboard_beam_segment_height_segments_latitude gt2l_freeboard_beam_segment_height_segments_longitude |
| gt2l_freeboard_beam_segment_height_segments_longitude: | Array of 64 bit Reals [gt2l_freeboard_beam_segment_height_segments_delta_time = 0..6316] units: degrees_east contentType: referenceInformation long_name: Longitude standard_name: longitude description: Longitude, WGS84, East=+,Lon of segment center source: Sea Ice ATBD valid_min: -180.00000000000000 valid_max: 180.00000000000000 origname: longitude fullnamepath: /gt2l/freeboard_beam_segment/height_segments/longitude coordinates: gt2l_freeboard_beam_segment_height_segments_delta_time gt2l_freeboard_beam_segment_height_segments_latitude |
| gt2l_freeboard_beam_segment_height_segments_background_r_norm: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_height_segments_delta_time = 0..6316] _FillValue: 3.402823466e+38 units: hz contentType: modelResult long_name: normalized background (50 shot) description: Background rate normalized to a fixed solar elevation angle source: ATL07 origname: background_r_norm fullnamepath: /gt2l/freeboard_beam_segment/height_segments/background_r_norm coordinates: gt2l_freeboard_beam_segment_height_segments_delta_time gt2l_freeboard_beam_segment_height_segments_latitude gt2l_freeboard_beam_segment_height_segments_longitude |
| gt2l_freeboard_beam_segment_height_segments_latitude: | Array of 64 bit Reals [gt2l_freeboard_beam_segment_height_segments_delta_time = 0..6316] units: degrees_north contentType: referenceInformation long_name: Latitude standard_name: latitude description: Latitude, WGS84, North=+, Lat of segment center source: Sea Ice ATBD valid_min: -90.000000000000000 valid_max: 90.000000000000000 origname: latitude fullnamepath: /gt2l/freeboard_beam_segment/height_segments/latitude coordinates: gt2l_freeboard_beam_segment_height_segments_delta_time gt2l_freeboard_beam_segment_height_segments_longitude |
| gt2l_freeboard_beam_segment_height_segments_ice_conc: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_height_segments_delta_time = 0..6316] _FillValue: 3.402823466e+38 units: 1 contentType: modelResult long_name: sea ice concentration description: Sea ice concentration percentage source: ATL07/ANC31 origname: ice_conc fullnamepath: /gt2l/freeboard_beam_segment/height_segments/ice_conc coordinates: gt2l_freeboard_beam_segment_height_segments_delta_time gt2l_freeboard_beam_segment_height_segments_latitude gt2l_freeboard_beam_segment_height_segments_longitude |
| gt2l_freeboard_beam_segment_height_segments_cloud_flag_asr: | Array of 16 bit Integers [gt2l_freeboard_beam_segment_height_segments_delta_time = 0..6316] units: 1 contentType: modelResult long_name: cloud flag asr description: Cloud flag (probability) from apparent surface reflectance. 0=clear with high confidence; 1=clear with medium confidence; 2=clear with low confidence; 3=cloudy with low confidence; 4=cloudy with medium confidence; 5=cloudy with high confidence; 6=unknown source: ATL09 flag_meanings: clear_with_high_confidence clear_with_medium_confidence clear_with_low_confidence cloudy_with_low_confidence cloudy_with_medium_confidence cloudy_with_high_confidence unknown flag_values: 0, 1, 2, 3, 4, 5, 6 valid_min: 0 valid_max: 6 origname: cloud_flag_asr fullnamepath: /gt2l/freeboard_beam_segment/height_segments/cloud_flag_asr coordinates: gt2l_freeboard_beam_segment_height_segments_delta_time gt2l_freeboard_beam_segment_height_segments_latitude gt2l_freeboard_beam_segment_height_segments_longitude |
| gt2l_freeboard_beam_segment_height_segments_height_segment_ssh_flag: | Array of 16 bit Integers [gt2l_freeboard_beam_segment_height_segments_delta_time = 0..6316] units: 1 contentType: referenceInformation long_name: Sea Surface Height Flag description: Identifiesthe height segments that are candidates for use as sea surface reference in freeboard calculations in ATL10. The flags are set as follows: 0 = sea ice; 1 = sea surface source: Sea Ice ATBD flag_meanings: sea_ice ice_surface flag_values: 0, 1 valid_min: 0 valid_max: 1 origname: height_segment_ssh_flag fullnamepath: /gt2l/freeboard_beam_segment/height_segments/height_segment_ssh_flag coordinates: gt2l_freeboard_beam_segment_height_segments_delta_time gt2l_freeboard_beam_segment_height_segments_latitude gt2l_freeboard_beam_segment_height_segments_longitude |
| gt2l_freeboard_beam_segment_height_segments_height_segment_surf_sigma: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_height_segments_delta_time = 0..6316] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: h surface sigma description: Sigma (standard deviation) estimate of the surface height (ATL07 h_surface_error) source: Sea Ice ATBD origname: height_segment_surf_sigma fullnamepath: /gt2l/freeboard_beam_segment/height_segments/height_segment_surf_sigma coordinates: gt2l_freeboard_beam_segment_height_segments_delta_time gt2l_freeboard_beam_segment_height_segments_latitude gt2l_freeboard_beam_segment_height_segments_longitude |
| gt2l_freeboard_beam_segment_height_segments_backgr_r_200: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_height_segments_delta_time = 0..6316] _FillValue: 3.402823466e+38 units: hz contentType: modelResult long_name: background rate 200 hz description: Background count rate, averaged over the segment based on ATLAS 50 pulse counts source: ATL09 origname: backgr_r_200 fullnamepath: /gt2l/freeboard_beam_segment/height_segments/backgr_r_200 coordinates: gt2l_freeboard_beam_segment_height_segments_delta_time gt2l_freeboard_beam_segment_height_segments_latitude gt2l_freeboard_beam_segment_height_segments_longitude |
| gt2l_freeboard_beam_segment_height_segments_height_segment_height: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_height_segments_delta_time = 0..6316] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: height of segment surface description: Mean height from along-track segment fit detremined by the sea ice algorithm(ATL07 h_si) source: Sea Ice ATBD origname: height_segment_height fullnamepath: /gt2l/freeboard_beam_segment/height_segments/height_segment_height coordinates: gt2l_freeboard_beam_segment_height_segments_delta_time gt2l_freeboard_beam_segment_height_segments_latitude gt2l_freeboard_beam_segment_height_segments_longitude |
| gt2l_freeboard_beam_segment_height_segments_height_segment_type: | Array of 16 bit Integers [gt2l_freeboard_beam_segment_height_segments_delta_time = 0..6316] units: 1 contentType: referenceInformation long_name: Segment surface type description: Value that indicates segment surface type as sea ice or different types of sea surface. 0=cloud covered: rsurf source: ATBD section 4.3 flag_meanings: cloud_covered other specular_lead_low_w_bkg specular_lead_low specular_lead_high_w_bkg specular_lead_high dark_lead_smooth_w_bkg dark_lead_smooth dark_lead_rough_w_bkg dark_lead_rough flag_values: 0 valid_min: 0 valid_max: 9 origname: height_segment_type fullnamepath: /gt2l/freeboard_beam_segment/height_segments/height_segment_type coordinates: gt2l_freeboard_beam_segment_height_segments_delta_time gt2l_freeboard_beam_segment_height_segments_latitude gt2l_freeboard_beam_segment_height_segments_longitude |
| gt2l_freeboard_beam_segment_height_segments_height_segment_confidence: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_height_segments_delta_time = 0..6316] _FillValue: 3.402823466e+38 units: 1 contentType: modelResult long_name: Surface height confidence description: Confidence level in the surface height estimate based on the number of photons; the background noise rate; and the error analysis (ATL07 h_confidence) source: Sea Ice ATBD origname: height_segment_confidence fullnamepath: /gt2l/freeboard_beam_segment/height_segments/height_segment_confidence coordinates: gt2l_freeboard_beam_segment_height_segments_delta_time gt2l_freeboard_beam_segment_height_segments_latitude gt2l_freeboard_beam_segment_height_segments_longitude |
| gt2l_freeboard_beam_segment_height_segments_asr_25: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_height_segments_delta_time = 0..6316] _FillValue: 3.402823466e+38 units: 1 contentType: modelResult long_name: Apparent surface reflectance at 25 hz description: Apparent surface reflectance at 25 hz, average to the sea ice segment source: ATL07 origname: asr_25 fullnamepath: /gt2l/freeboard_beam_segment/height_segments/asr_25 coordinates: gt2l_freeboard_beam_segment_height_segments_delta_time gt2l_freeboard_beam_segment_height_segments_latitude gt2l_freeboard_beam_segment_height_segments_longitude |
| gt2l_freeboard_beam_segment_height_segments_height_segment_w_gaussian: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_height_segments_delta_time = 0..6316] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: width of best fit gaussian description: Width of best fit gaussian (ATL07 w_gaussian) source: Sea Ice ATBD origname: height_segment_w_gaussian fullnamepath: /gt2l/freeboard_beam_segment/height_segments/height_segment_w_gaussian coordinates: gt2l_freeboard_beam_segment_height_segments_delta_time gt2l_freeboard_beam_segment_height_segments_latitude gt2l_freeboard_beam_segment_height_segments_longitude |
| gt2l_freeboard_beam_segment_height_segments_photon_rate: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_height_segments_delta_time = 0..6316] _FillValue: 3.402823466e+38 units: 1 contentType: modelResult long_name: photon rate description: Photon count rate, averaged over sea ice segment. source: ATL07 origname: photon_rate fullnamepath: /gt2l/freeboard_beam_segment/height_segments/photon_rate coordinates: gt2l_freeboard_beam_segment_height_segments_delta_time gt2l_freeboard_beam_segment_height_segments_latitude gt2l_freeboard_beam_segment_height_segments_longitude |
| gt2l_freeboard_beam_segment_height_segments_backgr_r_25: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_height_segments_delta_time = 0..6316] _FillValue: 3.402823466e+38 units: hz contentType: modelResult long_name: background rate 25 hz description: Background count rate, averaged over the segment based on 25 hz atmosphere source: ATL09 origname: backgr_r_25 fullnamepath: /gt2l/freeboard_beam_segment/height_segments/backgr_r_25 coordinates: gt2l_freeboard_beam_segment_height_segments_delta_time gt2l_freeboard_beam_segment_height_segments_latitude gt2l_freeboard_beam_segment_height_segments_longitude |
| gt2l_freeboard_beam_segment_height_segments_height_segment_rms: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_height_segments_delta_time = 0..6316] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: height rms description: RMS difference between sea ice modeled and observed photon height distribution(ATL07 h_rms) source: Sea Ice ATBD origname: height_segment_rms fullnamepath: /gt2l/freeboard_beam_segment/height_segments/height_segment_rms coordinates: gt2l_freeboard_beam_segment_height_segments_delta_time gt2l_freeboard_beam_segment_height_segments_latitude gt2l_freeboard_beam_segment_height_segments_longitude |
| gt2l_freeboard_beam_segment_beam_refsurf_interp_flag: | Array of 16 bit Integers [gt2l_freeboard_beam_segment_delta_time = 0..48] units: 1 long_name: reference surface interpolation flag description: Identifies segments with reference surface height filled through interpolation. -1 = no valid refrence surface was determined; 0= refsur computed from leads in this swath; 1 = reference surface inferred from data not in this swath; 2 = previous or next adjacent reference surface was used; 3 = filled based on the the upper height minus an offset source: ATBD section 5 flag_meanings: no_surf leads_in_swath inferred neighbor_used upper_height_minus_offset flag_values: -1, 0, 1, 2, 3 valid_min: -1 valid_max: 3 contentType: referenceInformation origname: beam_refsurf_interp_flag fullnamepath: /gt2l/freeboard_beam_segment/beam_refsurf_interp_flag coordinates: gt2l_freeboard_beam_segment_delta_time gt2l_freeboard_beam_segment_latitude gt2l_freeboard_beam_segment_longitude |
| gt2l_freeboard_beam_segment_longitude: | Array of 64 bit Reals [gt2l_freeboard_beam_segment_delta_time = 0..48] units: degrees_east contentType: referenceInformation long_name: Center longitude of freeboard swath-segment standard_name: longitude description: Center longitude of freeboard swath-segment (mean of all freeboard longitudes) source: ATBD section 5 origname: longitude fullnamepath: /gt2l/freeboard_beam_segment/longitude coordinates: gt2l_freeboard_beam_segment_delta_time gt2l_freeboard_beam_segment_latitude |
| gt2l_freeboard_beam_segment_beam_refsurf_height: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: reference surface mean description: Reference surface height -weighted combination of leads in this beam for this swath segment source: ATBD section 5 origname: beam_refsurf_height fullnamepath: /gt2l/freeboard_beam_segment/beam_refsurf_height coordinates: gt2l_freeboard_beam_segment_delta_time gt2l_freeboard_beam_segment_latitude gt2l_freeboard_beam_segment_longitude |
| gt2l_freeboard_beam_segment_latitude: | Array of 64 bit Reals [gt2l_freeboard_beam_segment_delta_time = 0..48] units: degrees_north contentType: referenceInformation long_name: Center latitude of freeboard swath-segment standard_name: latitude description: Center latitude of freeboard swath-segment (mean of all freeboard latitudes) source: ATBD section 5 origname: latitude fullnamepath: /gt2l/freeboard_beam_segment/latitude coordinates: gt2l_freeboard_beam_segment_delta_time gt2l_freeboard_beam_segment_longitude |
| gt2l_freeboard_beam_segment_beam_freeboard_height_segment_id: | Array of 32 bit Integers [gt2l_freeboard_beam_segment_beam_freeboard_delta_time = 0..6316] units: 1 long_name: Identifier of each height segment description: Identifier of each height segment source: Sea Ice ATBD contentType: referenceInformation origname: height_segment_id fullnamepath: /gt2l/freeboard_beam_segment/beam_freeboard/height_segment_id coordinates: gt2l_freeboard_beam_segment_beam_freeboard_delta_time gt2l_freeboard_beam_segment_beam_freeboard_latitude gt2l_freeboard_beam_segment_beam_freeboard_longitude |
| gt2l_freeboard_beam_segment_beam_freeboard_beam_fb_height: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_beam_freeboard_delta_time = 0..6316] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Freeboard estimate description: Estimate of the freeboard height based on the beam h reference source: ATBD section 5 origname: beam_fb_height fullnamepath: /gt2l/freeboard_beam_segment/beam_freeboard/beam_fb_height coordinates: gt2l_freeboard_beam_segment_beam_freeboard_delta_time gt2l_freeboard_beam_segment_beam_freeboard_latitude gt2l_freeboard_beam_segment_beam_freeboard_longitude |
| gt2l_freeboard_beam_segment_beam_freeboard_beam_refsur_ndx: | Array of 32 bit Integers [gt2l_freeboard_beam_segment_beam_freeboard_delta_time = 0..6316] units: 1 contentType: referenceInformation long_name: Index to beam refsur description: 1-based index to reference surface used for this freeboard height. Its value is identical to the fbswath_ndx. This index also idenifies the swath segment with which the beam freeboard associated. source: ATBD section 5 origname: beam_refsur_ndx fullnamepath: /gt2l/freeboard_beam_segment/beam_freeboard/beam_refsur_ndx coordinates: gt2l_freeboard_beam_segment_beam_freeboard_delta_time gt2l_freeboard_beam_segment_beam_freeboard_latitude gt2l_freeboard_beam_segment_beam_freeboard_longitude |
| gt2l_freeboard_beam_segment_beam_freeboard_seg_dist_x: | Array of 64 bit Reals [gt2l_freeboard_beam_segment_beam_freeboard_delta_time = 0..6316] units: meters contentType: physicalMeasurement long_name: Along Track Distance description: Along-track distance from the equator crossing to the segment center. source: Sea Ice ATBD origname: seg_dist_x fullnamepath: /gt2l/freeboard_beam_segment/beam_freeboard/seg_dist_x coordinates: gt2l_freeboard_beam_segment_beam_freeboard_delta_time gt2l_freeboard_beam_segment_beam_freeboard_latitude gt2l_freeboard_beam_segment_beam_freeboard_longitude |
| gt2l_freeboard_beam_segment_beam_freeboard_longitude: | Array of 64 bit Reals [gt2l_freeboard_beam_segment_beam_freeboard_delta_time = 0..6316] units: degrees_east contentType: referenceInformation long_name: Longitude standard_name: longitude description: Longitude, WGS84, East=+,Lon of segment center source: Sea Ice ATBD valid_min: -180.00000000000000 valid_max: 180.00000000000000 origname: longitude fullnamepath: /gt2l/freeboard_beam_segment/beam_freeboard/longitude coordinates: gt2l_freeboard_beam_segment_beam_freeboard_delta_time gt2l_freeboard_beam_segment_beam_freeboard_latitude |
| gt2l_freeboard_beam_segment_beam_freeboard_latitude: | Array of 64 bit Reals [gt2l_freeboard_beam_segment_beam_freeboard_delta_time = 0..6316] units: degrees_north contentType: referenceInformation long_name: Latitude standard_name: latitude description: Latitude, WGS84, North=+, Lat of segment center source: Sea Ice ATBD valid_min: -90.000000000000000 valid_max: 90.000000000000000 origname: latitude fullnamepath: /gt2l/freeboard_beam_segment/beam_freeboard/latitude coordinates: gt2l_freeboard_beam_segment_beam_freeboard_delta_time gt2l_freeboard_beam_segment_beam_freeboard_longitude |
| gt2l_freeboard_beam_segment_beam_freeboard_geoseg_beg: | Array of 32 bit Integers [gt2l_freeboard_beam_segment_beam_freeboard_delta_time = 0..6316] units: 1 contentType: referenceInformation long_name: Beginning GEOSEG description: Geolocation segment (geoseg) ID associated with the first photon used in this sea ice segment source: Sea Ice ATBD origname: geoseg_beg fullnamepath: /gt2l/freeboard_beam_segment/beam_freeboard/geoseg_beg coordinates: gt2l_freeboard_beam_segment_beam_freeboard_delta_time gt2l_freeboard_beam_segment_beam_freeboard_latitude gt2l_freeboard_beam_segment_beam_freeboard_longitude |
| gt2l_freeboard_beam_segment_beam_freeboard_beam_fb_confidence: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_beam_freeboard_delta_time = 0..6316] _FillValue: 3.402823466e+38 units: 1 contentType: referenceInformation long_name: Freeboard confidence description: Confidence level in the freeboard estimate source: ATBD section 5 origname: beam_fb_confidence fullnamepath: /gt2l/freeboard_beam_segment/beam_freeboard/beam_fb_confidence coordinates: gt2l_freeboard_beam_segment_beam_freeboard_delta_time gt2l_freeboard_beam_segment_beam_freeboard_latitude gt2l_freeboard_beam_segment_beam_freeboard_longitude |
| gt2l_freeboard_beam_segment_beam_freeboard_beam_fb_sigma: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_beam_freeboard_delta_time = 0..6316] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Freeboard sigma estimate description: estimate of the sigma ( standard deviation) for each beam freeboard height source: ATBD section 5 origname: beam_fb_sigma fullnamepath: /gt2l/freeboard_beam_segment/beam_freeboard/beam_fb_sigma coordinates: gt2l_freeboard_beam_segment_beam_freeboard_delta_time gt2l_freeboard_beam_segment_beam_freeboard_latitude gt2l_freeboard_beam_segment_beam_freeboard_longitude |
| gt2l_freeboard_beam_segment_beam_freeboard_geoseg_end: | Array of 32 bit Integers [gt2l_freeboard_beam_segment_beam_freeboard_delta_time = 0..6316] units: 1 contentType: referenceInformation long_name: Ending GEOSEG description: Geolocation segment (geoseg) ID associated with the last photon used in this sea ice segment source: Sea Ice ATBD origname: geoseg_end fullnamepath: /gt2l/freeboard_beam_segment/beam_freeboard/geoseg_end coordinates: gt2l_freeboard_beam_segment_beam_freeboard_delta_time gt2l_freeboard_beam_segment_beam_freeboard_latitude gt2l_freeboard_beam_segment_beam_freeboard_longitude |
| gt2l_freeboard_beam_segment_beam_freeboard_beam_fb_quality_flag: | Array of 16 bit Integers [gt2l_freeboard_beam_segment_beam_freeboard_delta_time = 0..6316] units: 1 contentType: referenceInformation long_name: Flag describing the quality of the freeboard estimate description: Flag describing the quality of the results of the along-track fit. (-1=height value is invalid; 1=ngrid_w < wlength/2; 2=ngrid_w >= wlength/2; 3=ngrid_dt < dtlength/2; 4=ngrid_dt >= dtlength/2; 5=ngrid_dt >= (dtlength-2): where 1 is best and 5 is poor). source: ATBD section 5 flag_meanings: invalid best high med low poor flag_values: -1, 1, 2, 3, 4, 5 valid_min: -1 valid_max: 5 origname: beam_fb_quality_flag fullnamepath: /gt2l/freeboard_beam_segment/beam_freeboard/beam_fb_quality_flag coordinates: gt2l_freeboard_beam_segment_beam_freeboard_delta_time gt2l_freeboard_beam_segment_beam_freeboard_latitude gt2l_freeboard_beam_segment_beam_freeboard_longitude |
| gt2l_freeboard_beam_segment_beam_fb_length: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Length ofbeam freeboard swath-segment description: Length of freeboard beam-segment source: ATBD section 5 origname: beam_fb_length fullnamepath: /gt2l/freeboard_beam_segment/beam_fb_length coordinates: gt2l_freeboard_beam_segment_delta_time gt2l_freeboard_beam_segment_latitude gt2l_freeboard_beam_segment_longitude |
| gt2l_freeboard_beam_segment_beam_fb_hist: | Array of 16 bit Integers [gt2l_freeboard_beam_segment_delta_time = 0..48][gt2l_freeboard_beam_segment_ds_si_hist_bins = 0..160] units: 1 contentType: referenceInformation long_name: Beam freeboard histogram description: Beam Freeboard (using beam fbswath reference surface height) histogram (distribution) for this freeboard beam-segment source: ATBD section 5 origname: beam_fb_hist fullnamepath: /gt2l/freeboard_beam_segment/beam_fb_hist coordinates: gt2l_freeboard_beam_segment_delta_time gt2l_freeboard_beam_segment_latitude gt2l_freeboard_beam_segment_longitude |
| gt2l_freeboard_beam_segment_geophysical_height_segment_dac: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_geophysical_delta_time = 0..6316] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: Dynamic Atmosphere Correction description: Dynamic Atmospheric Correction (DAC) includes inverted barometer (IB) effect (From ATL07) source: Sea Ice ATBD origname: height_segment_dac fullnamepath: /gt2l/freeboard_beam_segment/geophysical/height_segment_dac coordinates: gt2l_freeboard_beam_segment_geophysical_delta_time gt2l_freeboard_beam_segment_geophysical_latitude gt2l_freeboard_beam_segment_geophysical_longitude |
| gt2l_freeboard_beam_segment_geophysical_height_segment_tide_pole: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_geophysical_delta_time = 0..6316] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: Pole Tide description: Pole Tide -Rotational deformation due to polar motion (-1.5 to 1.5 cm). (From ATL07) source: Sea Ice ATBD origname: height_segment_tide_pole fullnamepath: /gt2l/freeboard_beam_segment/geophysical/height_segment_tide_pole coordinates: gt2l_freeboard_beam_segment_geophysical_delta_time gt2l_freeboard_beam_segment_geophysical_latitude gt2l_freeboard_beam_segment_geophysical_longitude |
| gt2l_freeboard_beam_segment_geophysical_longitude: | Array of 64 bit Reals [gt2l_freeboard_beam_segment_geophysical_delta_time = 0..6316] units: degrees_east contentType: referenceInformation long_name: Longitude standard_name: longitude description: Longitude, WGS84, East=+,Lon of segment center source: Sea Ice ATBD valid_min: -180.00000000000000 valid_max: 180.00000000000000 origname: longitude fullnamepath: /gt2l/freeboard_beam_segment/geophysical/longitude coordinates: gt2l_freeboard_beam_segment_geophysical_delta_time gt2l_freeboard_beam_segment_geophysical_latitude |
| gt2l_freeboard_beam_segment_geophysical_latitude: | Array of 64 bit Reals [gt2l_freeboard_beam_segment_geophysical_delta_time = 0..6316] units: degrees_north long_name: Latitude standard_name: latitude description: Latitude, WGS84, North=+, Lat of segment center source: Sea Ice ATBD valid_min: -90.000000000000000 valid_max: 90.000000000000000 contentType: referenceInformation origname: latitude fullnamepath: /gt2l/freeboard_beam_segment/geophysical/latitude coordinates: gt2l_freeboard_beam_segment_geophysical_delta_time gt2l_freeboard_beam_segment_geophysical_longitude |
| gt2l_freeboard_beam_segment_geophysical_height_segment_load: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_geophysical_delta_time = 0..6316] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: Load Tide description: Load Tide - Local displacement due to Ocean Loading (-6 to 0 cm).(From ATL07) source: Sea Ice ATBD origname: height_segment_load fullnamepath: /gt2l/freeboard_beam_segment/geophysical/height_segment_load coordinates: gt2l_freeboard_beam_segment_geophysical_delta_time gt2l_freeboard_beam_segment_geophysical_latitude gt2l_freeboard_beam_segment_geophysical_longitude |
| gt2l_freeboard_beam_segment_geophysical_height_segment_geoid: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_geophysical_delta_time = 0..6316] contentType: referenceInformation long_name: EGM2008 Geoid description: Geoid height above WGS-84 reference ellipsoid (range -107 to 86m), based on the EGM2008 model.(From ATL07) source: Sea Ice ATBD _FillValue: 3.402823466e+38 units: meters origname: height_segment_geoid fullnamepath: /gt2l/freeboard_beam_segment/geophysical/height_segment_geoid coordinates: gt2l_freeboard_beam_segment_geophysical_delta_time gt2l_freeboard_beam_segment_geophysical_latitude gt2l_freeboard_beam_segment_geophysical_longitude |
| gt2l_freeboard_beam_segment_geophysical_height_segment_ocean: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_geophysical_delta_time = 0..6316] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: Ocean Tide description: Ocean Tides including diurnal and semi-diurnal (harmonic analysis), and longer period tides (dynamic and self-consistent equilibrium) (From ATL07) source: Sea Ice ATBD origname: height_segment_ocean fullnamepath: /gt2l/freeboard_beam_segment/geophysical/height_segment_ocean coordinates: gt2l_freeboard_beam_segment_geophysical_delta_time gt2l_freeboard_beam_segment_geophysical_latitude gt2l_freeboard_beam_segment_geophysical_longitude |
| gt2l_freeboard_beam_segment_geophysical_height_segment_mss: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_geophysical_delta_time = 0..6316] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: Mean Sea Surface description: Mean sea surface height above WGS-84 reference ellipsoid. (From ATL07, includes tide-free geoid and mean dynamic topography source: Sea Ice ATBD origname: height_segment_mss fullnamepath: /gt2l/freeboard_beam_segment/geophysical/height_segment_mss coordinates: gt2l_freeboard_beam_segment_geophysical_delta_time gt2l_freeboard_beam_segment_geophysical_latitude gt2l_freeboard_beam_segment_geophysical_longitude |
| gt2l_freeboard_beam_segment_geophysical_height_segment_earth: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_geophysical_delta_time = 0..6316] contentType: referenceInformation long_name: Earth Tide description: Solid Earth Tide(From ATL07) source: Sea Ice ATBD _FillValue: 3.402823466e+38 units: meters origname: height_segment_earth fullnamepath: /gt2l/freeboard_beam_segment/geophysical/height_segment_earth coordinates: gt2l_freeboard_beam_segment_geophysical_delta_time gt2l_freeboard_beam_segment_geophysical_latitude gt2l_freeboard_beam_segment_geophysical_longitude |
| gt2l_freeboard_beam_segment_fbswath_ndx: | Array of 32 bit Integers [gt2l_freeboard_beam_segment_delta_time = 0..48] units: 1 contentType: referenceInformation long_name: Index to freeboard swath segment description: The 1-based fbswath_nx identifies the swath associated with each element. There are the same number of elements in the group /freeboard_swath_segment and in each of the /GTx/freeboard_beam_segment groups. The fbswath_nx identifies the fbswath_refsurf_height used to compute the fbswath_fb_height. It is the same index number that idenitifies the beam_refsurf_height to its swath and the beam_refsurf_height used to computed the beam_fb_height. source: ATBD section 5 origname: fbswath_ndx fullnamepath: /gt2l/freeboard_beam_segment/fbswath_ndx coordinates: gt2l_freeboard_beam_segment_delta_time gt2l_freeboard_beam_segment_latitude gt2l_freeboard_beam_segment_longitude |
| gt2l_freeboard_beam_segment_beam_fb_sigma: | Array of 32 bit Reals [gt2l_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Beam Freeboard standard deviation swath-segment description: Freeboard standard deviation of the height-segments in freeboard beam-segment source: ATBD section 5 origname: beam_fb_sigma fullnamepath: /gt2l/freeboard_beam_segment/beam_fb_sigma coordinates: gt2l_freeboard_beam_segment_delta_time gt2l_freeboard_beam_segment_latitude gt2l_freeboard_beam_segment_longitude |
| gt2l_freeboard_beam_segment_beam_lead_n: | Array of 32 bit Integers [gt2l_freeboard_beam_segment_delta_time = 0..48] units: 1 contentType: referenceInformation long_name: Number of leads description: Number of leads used for this beam reference surface source: Sea Ice ATBD origname: beam_lead_n fullnamepath: /gt2l/freeboard_beam_segment/beam_lead_n coordinates: gt2l_freeboard_beam_segment_delta_time gt2l_freeboard_beam_segment_latitude gt2l_freeboard_beam_segment_longitude |
| gt2l_leads_lead_height: | Array of 32 bit Reals [gt2l_leads_delta_time = 0..41] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Lead height description: Lead height - weighted mean of consective sea surface heights used for this lead source: ATBD section 5 origname: lead_height fullnamepath: /gt2l/leads/lead_height coordinates: gt2l_leads_delta_time gt2l_leads_latitude gt2l_leads_longitude |
| gt2l_leads_lead_length: | Array of 32 bit Reals [gt2l_leads_delta_time = 0..41] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Lead size description: Along-track length of this lead source: ATBD section 5 origname: lead_length fullnamepath: /gt2l/leads/lead_length coordinates: gt2l_leads_delta_time gt2l_leads_latitude gt2l_leads_longitude |
| gt2l_leads_lead_sigma: | Array of 32 bit Reals [gt2l_leads_delta_time = 0..41] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Lead sigma estimate description: Lead height sigma (standard deviation) estimate - weighted combination of sea surface height sigmas used as leads in this beam for this swath segment source: ATBD section 5 origname: lead_sigma fullnamepath: /gt2l/leads/lead_sigma coordinates: gt2l_leads_delta_time gt2l_leads_latitude gt2l_leads_longitude |
| gt2l_leads_longitude: | Array of 64 bit Reals [gt2l_leads_delta_time = 0..41] units: degrees_east contentType: referenceInformation long_name: Center longitude of lead standard_name: longitude description: Center longitude of lead (mean of all freeboard longitudes) source: ATBD section 5 origname: longitude fullnamepath: /gt2l/leads/longitude coordinates: gt2l_leads_delta_time gt2l_leads_latitude |
| gt2l_leads_latitude: | Array of 64 bit Reals [gt2l_leads_delta_time = 0..41] units: degrees_north contentType: referenceInformation long_name: Center latitude of lead standard_name: latitude description: Center latitude of lead (mean of all sea surface height latitudes) source: ATBD section 5 origname: latitude fullnamepath: /gt2l/leads/latitude coordinates: gt2l_leads_delta_time gt2l_leads_longitude |
| gt2l_leads_ssh_n: | Array of 32 bit Integers [gt2l_leads_delta_time = 0..41] units: 1 contentType: referenceInformation long_name: number of sea surface references description: Number of sea surface height segments used for this lead source: ATBD section 5 origname: ssh_n fullnamepath: /gt2l/leads/ssh_n coordinates: gt2l_leads_delta_time gt2l_leads_latitude gt2l_leads_longitude |
| gt2l_leads_ssh_ndx: | Array of 32 bit Integers [gt2l_leads_delta_time = 0..41] units: 1 contentType: referenceInformation long_name: index first sea surface description: 1-based index to the first freeboard element (i.e.first sea surface height segment) used for this lead source: Sea Ice ATBD origname: ssh_ndx fullnamepath: /gt2l/leads/ssh_ndx coordinates: gt2l_leads_delta_time gt2l_leads_latitude gt2l_leads_longitude |
| ancillary_data_release: | Array of Strings [FakeDim0 = 0..0] units: 1 contentType: auxiliaryInformation long_name: Release Number description: Release number of the granule. The release number is incremented when the software or ancillary data used to create the granule has been changed. source: Operations origname: release fullnamepath: /ancillary_data/release |
| ancillary_data_end_geoseg: | Array of 32 bit Integers [FakeDim0 = 0..0] units: 1 contentType: auxiliaryInformation long_name: Ending Geolocation Segment description: The ending geolocation segment number associated with the data contained within this granule. ICESat granule geographic regions are further refined by geolocation segments. During the geolocation process, a geolocation segment is created approximately every 20m from the start of the orbit to the end. The geolocation segments help align the ATLAS strong a weak beams and provide a common segment length for the L2 and higher products. The geolocation segment indices differ slightly from orbit-to-orbit because of the irregular shape of the Earth. The geolocation segment indices on ATL01 and ATL02 are only approximate because beams have not been aligned at the time of their creation. source: Derived origname: end_geoseg fullnamepath: /ancillary_data/end_geoseg |
| ancillary_data_version: | Array of Strings [FakeDim0 = 0..0] units: 1 contentType: auxiliaryInformation long_name: Version description: Version number of this granule within the release. It is a sequential number corresponding to the number of times the granule has been reprocessed for the current release. source: Operations origname: version fullnamepath: /ancillary_data/version |
| ancillary_data_end_region: | Array of 32 bit Integers [FakeDim0 = 0..0] units: 1 contentType: auxiliaryInformation long_name: Ending Region description: The ending product-specific region number associated with the data contained within this granule. ICESat-2 data products are separated by geographic regions. The data contained within a specific region are the same for ATL01 and ATL02. ATL03 regions differ slightly because of different geolocation segment locations caused by the irregular shape of the Earth. The region indices for other products are completely independent. source: Derived origname: end_region fullnamepath: /ancillary_data/end_region |
| ancillary_data_atlas_sdp_gps_epoch: | Array of 64 bit Reals [FakeDim0 = 0..0] units: seconds since 1980-01-06T00:00:00.000000Z contentType: auxiliaryInformation long_name: ATLAS Epoch Offset description: Number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS Standard Data Product (SDP) epoch (2018-01-01:T00.00.00.000000 UTC). Add this value to delta time parameters to compute full gps_seconds (relative to the GPS epoch) for each data point. source: Operations origname: atlas_sdp_gps_epoch fullnamepath: /ancillary_data/atlas_sdp_gps_epoch |
| ancillary_data_end_rgt: | Array of 32 bit Integers [FakeDim0 = 0..0] units: 1 contentType: auxiliaryInformation long_name: Ending Reference Groundtrack description: The ending reference groundtrack (RGT) number associated with the data contained within this granule. There are 1387 reference groundtrack in the ICESat-2 repeat orbit. The reference groundtrack increments each time the spacecraft completes a full orbit of the Earth and resets to 1 each time the spacecraft completes a full cycle. source: Derived valid_min: 1 valid_max: 1387 origname: end_rgt fullnamepath: /ancillary_data/end_rgt |
| ancillary_data_end_delta_time: | Array of 64 bit Reals [FakeDim0 = 0..0] units: seconds since 2018-01-01 contentType: auxiliaryInformation long_name: ATLAS End Time (Actual) standard_name: time description: Number of GPS seconds since the ATLAS SDP epoch at the last data point in the file. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived origname: end_delta_time fullnamepath: /ancillary_data/end_delta_time |
| ancillary_data_end_orbit: | Array of 32 bit Integers [FakeDim0 = 0..0] units: 1 contentType: auxiliaryInformation long_name: Ending Orbit Number description: The ending orbit number associated with the data contained within this granule. The orbit number increments each time the spacecraft completes a full orbit of the Earth. source: Derived origname: end_orbit fullnamepath: /ancillary_data/end_orbit |
| ancillary_data_freeboard_estimation_fbswath_fb_hist_max: | Array of 32 bit Reals [FakeDim0 = 0..0] units: meters contentType: auxiliaryInformation long_name: Freeboard Histogram Maximum Height description: Freeboard histogram maximum height bin center for any swath segment. source: Sea Ice ATBD origname: fbswath_fb_hist_max fullnamepath: /ancillary_data/freeboard_estimation/fbswath_fb_hist_max |
| ancillary_data_freeboard_estimation_multi_beam_disable_flag: | Array of 32 bit Integers [FakeDim0 = 0..0] units: 1 contentType: auxiliaryInformation long_name: miltibeam_disable_flag description: disable multi-beam (intra-pair and inter-pair) freeboard calculations source: Sea Ice ATBD flag_meanings: no yes flag_values: 0, 1 valid_min: 0 valid_max: 1 origname: multi_beam_disable_flag fullnamepath: /ancillary_data/freeboard_estimation/multi_beam_disable_flag |
| ancillary_data_freeboard_estimation_fbswath_fb_hist_min: | Array of 32 bit Reals [FakeDim0 = 0..0] units: meters contentType: auxiliaryInformation long_name: Freeboard Histogram Minimum Height description: Freeboard histogram minimum height bin center for any swath segment. source: Sea Ice ATBD origname: fbswath_fb_hist_min fullnamepath: /ancillary_data/freeboard_estimation/fbswath_fb_hist_min |
| ancillary_data_freeboard_estimation_fill_height_pct: | Array of 32 bit Reals [FakeDim0 = 0..0] units: 1 contentType: auxiliaryInformation long_name: fill_height_pct description: percentile of sorted heights (in fraction) source: Sea Ice ATBD origname: fill_height_pct fullnamepath: /ancillary_data/freeboard_estimation/fill_height_pct |
| ancillary_data_freeboard_estimation_ic_thresh1: | Array of 32 bit Reals [FakeDim0 = 0..0] units: 1 contentType: auxiliaryInformation long_name: minimum ice concentration filter 1 description: Minimum ice concentration for filtering reference surfaces source: Sea Ice ATBD origname: ic_thresh1 fullnamepath: /ancillary_data/freeboard_estimation/ic_thresh1 |
| ancillary_data_freeboard_estimation_l: | Array of 32 bit Reals [FakeDim0 = 0..0] units: meters contentType: auxiliaryInformation long_name: fb_seg_len description: Along track swath segment length for freeboard calculations source: Sea Ice ATBD origname: l fullnamepath: /ancillary_data/freeboard_estimation/l |
| ancillary_data_freeboard_estimation_refsurf_slope_fill: | Array of 32 bit Reals [FakeDim0 = 0..0] units: degrees contentType: auxiliaryInformation long_name: ssh_slope_fill description: Filled SSH sloper estimate source: Sea Ice ATBD origname: refsurf_slope_fill fullnamepath: /ancillary_data/freeboard_estimation/refsurf_slope_fill |
| ancillary_data_freeboard_estimation_maxgapht: | Array of 32 bit Reals [FakeDim0 = 0..0] units: meters contentType: auxiliaryInformation long_name: max gap height description: Allowable height separation between refsurf heights across time gap source: Sea Ice ATBD origname: maxgapht fullnamepath: /ancillary_data/freeboard_estimation/maxgapht |
| ancillary_data_freeboard_estimation_n_fillpass: | Array of 32 bit Integers [FakeDim0 = 0..0] units: 1 contentType: auxiliaryInformation long_name: n_fillpass description: Number of passes for gap filling source: Sea Ice ATBD origname: n_fillpass fullnamepath: /ancillary_data/freeboard_estimation/n_fillpass |
| ancillary_data_freeboard_estimation_refsurf_h_offset1: | Array of 32 bit Reals [FakeDim0 = 0..0] units: meters contentType: auxiliaryInformation long_name: h_offset1 description: height offset for fill refsurf bound check source: Sea Ice ATBD origname: refsurf_h_offset1 fullnamepath: /ancillary_data/freeboard_estimation/refsurf_h_offset1 |
| ancillary_data_freeboard_estimation_refsurf_sd_fill: | Array of 32 bit Reals [FakeDim0 = 0..0] units: meters contentType: auxiliaryInformation long_name: ssh_sd_fill description: Filled SSH stdev estimate source: Sea Ice ATBD origname: refsurf_sd_fill fullnamepath: /ancillary_data/freeboard_estimation/refsurf_sd_fill |
| ancillary_data_freeboard_estimation_refsurf_h_offset2: | Array of 32 bit Reals [FakeDim0 = 0..0] units: meters contentType: auxiliaryInformation long_name: h_offset2 description: height offset for fill refsurf estimate source: Sea Ice ATBD origname: refsurf_h_offset2 fullnamepath: /ancillary_data/freeboard_estimation/refsurf_h_offset2 |
| ancillary_data_freeboard_estimation_ht_thresh2: | Array of 32 bit Reals [FakeDim0 = 0..0] units: meters contentType: auxiliaryInformation long_name: height threshold 2 description: Refsurf height difference threshold for consecutive estimates source: Sea Ice ATBD origname: ht_thresh2 fullnamepath: /ancillary_data/freeboard_estimation/ht_thresh2 |
| ancillary_data_freeboard_estimation_ht_thresh1: | Array of 32 bit Reals [FakeDim0 = 0..0] units: meters contentType: auxiliaryInformation description: Refsurf height difference threshold for low concentration cases source: Sea Ice ATBD long_name: height threshold 1 origname: ht_thresh1 fullnamepath: /ancillary_data/freeboard_estimation/ht_thresh1 |
| ancillary_data_freeboard_estimation_refsurf_slope_ub: | Array of 32 bit Reals [FakeDim0 = 0..0] units: degrees contentType: auxiliaryInformation long_name: ssh_slope_ub description: Upper bound for SSH slope source: Sea Ice ATBD origname: refsurf_slope_ub fullnamepath: /ancillary_data/freeboard_estimation/refsurf_slope_ub |
| ancillary_data_freeboard_estimation_lb_n_f: | Array of 32 bit Integers [FakeDim0 = 0..0] units: 1 contentType: auxiliaryInformation long_name: lb_n_f description: Lower bounds on number of SSH estimates source: Sea Ice ATBD origname: lb_n_f fullnamepath: /ancillary_data/freeboard_estimation/lb_n_f |
| ancillary_data_freeboard_estimation_fill_ub_width: | Array of 32 bit Reals [FakeDim0 = 0..0] units: meters contentType: auxiliaryInformation long_name: fill_ub_width description: maximum width for fill segments (width of gaussian from fine tracking) source: Sea Ice ATBD origname: fill_ub_width fullnamepath: /ancillary_data/freeboard_estimation/fill_ub_width |
| ancillary_data_freeboard_estimation_min_land_dist: | Array of 32 bit Integers [FakeDim0 = 0..0] units: km contentType: auxiliaryInformation long_name: minimum distance from land description: Minimum distance from land for filtering reference surface source: Sea Ice ATBD origname: min_land_dist fullnamepath: /ancillary_data/freeboard_estimation/min_land_dist |
| ancillary_data_freeboard_estimation_fill_snow_depth: | Array of 32 bit Reals [FakeDim0 = 0..0] units: 1 contentType: auxiliaryInformation long_name: fill_snow_depth description: snow depth bias for fill segments source: Sea Ice ATBD origname: fill_snow_depth fullnamepath: /ancillary_data/freeboard_estimation/fill_snow_depth |
| ancillary_data_freeboard_estimation_ic_thresh2: | Array of 32 bit Reals [FakeDim0 = 0..0] units: 1 contentType: auxiliaryInformation long_name: minimum ice concentration filter 2 description: Reference surfaces estimates filtered below this ice concentration source: Sea Ice ATBD origname: ic_thresh2 fullnamepath: /ancillary_data/freeboard_estimation/ic_thresh2 |
| ancillary_data_freeboard_estimation_maxgaptime: | Array of 32 bit Integers [FakeDim0 = 0..0] units: seconds contentType: auxiliaryInformation long_name: max gap time description: Maximum allowable time gap for interpolation source: Sea Ice ATBD origname: maxgaptime fullnamepath: /ancillary_data/freeboard_estimation/maxgaptime |
| ancillary_data_freeboard_estimation_height_segment_fit_quality_flag_min: | Array of 32 bit Integers [FakeDim0 = 0..0] units: 1 contentType: auxiliaryInformation long_name: Minimum Fit Quality to Use description: The minimum height segment fit quality flag value for which an ATL07 sea ice segment is considered for use within the freeboard height computations. source: Sea Ice ATBD origname: height_segment_fit_quality_flag_min fullnamepath: /ancillary_data/freeboard_estimation/height_segment_fit_quality_flag_min |
| ancillary_data_freeboard_estimation_height_segment_fit_quality_flag_max: | Array of 32 bit Integers [FakeDim0 = 0..0] units: 1 contentType: auxiliaryInformation long_name: Maximum Fit Quality to Use description: The maximum height segment fit quality flag value for which an ATL07 sea ice segment is considered for use within the freeboard height computations. source: Sea Ice ATBD origname: height_segment_fit_quality_flag_max fullnamepath: /ancillary_data/freeboard_estimation/height_segment_fit_quality_flag_max |
| ancillary_data_freeboard_estimation_b_fr: | Array of 32 bit Reals [FakeDim0 = 0..0] units: meters contentType: auxiliaryInformation long_name: b_fr description: Bin size of the freeboard histogram source: Sea Ice ATBD origname: b_fr fullnamepath: /ancillary_data/freeboard_estimation/b_fr |
| ancillary_data_start_cycle: | Array of 32 bit Integers [FakeDim0 = 0..0] units: 1 contentType: auxiliaryInformation long_name: Starting Cycle description: The starting cycle number associated with the data contained within this granule. The cycle number is the counter of the number of 91-day repeat cycles completed by the mission. source: Derived valid_min: 0 valid_max: 99 origname: start_cycle fullnamepath: /ancillary_data/start_cycle |
| ancillary_data_data_end_utc: | Array of Strings [FakeDim0 = 0..0] units: 1 contentType: auxiliaryInformation long_name: End UTC Time of Granule (CCSDS-A, Actual) description: UTC (in CCSDS-A format) of the last data point within the granule. source: Derived origname: data_end_utc fullnamepath: /ancillary_data/data_end_utc |
| ancillary_data_control: | Array of Strings [FakeDim0 = 0..0] units: 1 contentType: auxiliaryInformation long_name: Control File description: PGE-specific control file used to generate this granule. To re-use, replace breaks (BR) with linefeeds. source: Operations origname: control fullnamepath: /ancillary_data/control |
| ancillary_data_start_gpssow: | Array of 64 bit Reals [FakeDim0 = 0..0] units: seconds contentType: auxiliaryInformation long_name: Start GPS SOW of Granule (Actual) description: GPS seconds-of-week of the first data point in the granule. source: Derived origname: start_gpssow fullnamepath: /ancillary_data/start_gpssow |
| ancillary_data_granule_end_utc: | Array of Strings [FakeDim0 = 0..0] units: 1 contentType: auxiliaryInformation long_name: End UTC Time of Granule (CCSDS-A, Requested) description: Requested end time (in UTC CCSDS-A) of this granule. source: Derived origname: granule_end_utc fullnamepath: /ancillary_data/granule_end_utc |
| ancillary_data_end_cycle: | Array of 32 bit Integers [FakeDim0 = 0..0] units: 1 contentType: auxiliaryInformation long_name: Ending Cycle description: The ending cycle number associated with the data contained within this granule. The cycle number is the counter of the number of 91-day repeat cycles completed by the mission. source: Derived valid_min: 0 valid_max: 99 origname: end_cycle fullnamepath: /ancillary_data/end_cycle |
| ancillary_data_granule_start_utc: | Array of Strings [FakeDim0 = 0..0] units: 1 contentType: auxiliaryInformation long_name: Start UTC Time of Granule (CCSDS-A, Requested) description: Requested start time (in UTC CCSDS-A) of this granule. source: Derived origname: granule_start_utc fullnamepath: /ancillary_data/granule_start_utc |
| ancillary_data_start_delta_time: | Array of 64 bit Reals [FakeDim0 = 0..0] units: seconds since 2018-01-01 contentType: auxiliaryInformation long_name: ATLAS Start Time (Actual) standard_name: time description: Number of GPS seconds since the ATLAS SDP epoch at the first data point in the file. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived origname: start_delta_time fullnamepath: /ancillary_data/start_delta_time |
| ancillary_data_start_geoseg: | Array of 32 bit Integers [FakeDim0 = 0..0] units: 1 contentType: auxiliaryInformation long_name: Starting Geolocation Segment description: The starting geolocation segment number associated with the data contained within this granule. ICESat granule geographic regions are further refined by geolocation segments. During the geolocation process, a geolocation segment is created approximately every 20m from the start of the orbit to the end. The geolocation segments help align the ATLAS strong a weak beams and provide a common segment length for the L2 and higher products. The geolocation segment indices differ slightly from orbit-to-orbit because of the irregular shape of the Earth. The geolocation segment indices on ATL01 and ATL02 are only approximate because beams have not been aligned at the time of their creation. source: Derived origname: start_geoseg fullnamepath: /ancillary_data/start_geoseg |
| ancillary_data_start_orbit: | Array of 32 bit Integers [FakeDim0 = 0..0] units: 1 contentType: auxiliaryInformation long_name: Starting Orbit Number description: The starting orbit number associated with the data contained within this granule. The orbit number increments each time the spacecraft completes a full orbit of the Earth. source: Derived origname: start_orbit fullnamepath: /ancillary_data/start_orbit |
| ancillary_data_data_start_utc: | Array of Strings [FakeDim0 = 0..0] units: 1 contentType: auxiliaryInformation long_name: Start UTC Time of Granule (CCSDS-A, Actual) description: UTC (in CCSDS-A format) of the first data point within the granule. source: Derived origname: data_start_utc fullnamepath: /ancillary_data/data_start_utc |
| ancillary_data_end_gpsweek: | Array of 32 bit Integers [FakeDim0 = 0..0] units: weeks from 1980-01-06 contentType: auxiliaryInformation long_name: Ending GPSWeek of Granule (Actual) description: GPS week number of the last data point in the granule. source: Derived origname: end_gpsweek fullnamepath: /ancillary_data/end_gpsweek |
| ancillary_data_start_rgt: | Array of 32 bit Integers [FakeDim0 = 0..0] units: 1 contentType: auxiliaryInformation long_name: Starting Reference Groundtrack description: The starting reference groundtrack (RGT) number associated with the data contained within this granule. There are 1387 reference groundtrack in the ICESat-2 repeat orbit. The reference groundtrack increments each time the spacecraft completes a full orbit of the Earth and resets to 1 each time the spacecraft completes a full cycle. source: Derived valid_min: 1 valid_max: 1387 origname: start_rgt fullnamepath: /ancillary_data/start_rgt |
| ancillary_data_end_gpssow: | Array of 64 bit Reals [FakeDim0 = 0..0] units: seconds contentType: auxiliaryInformation long_name: Ending GPS SOW of Granule (Actual) description: GPS seconds-of-week of the last data point in the granule. source: Derived origname: end_gpssow fullnamepath: /ancillary_data/end_gpssow |
| ancillary_data_start_region: | Array of 32 bit Integers [FakeDim0 = 0..0] units: 1 contentType: auxiliaryInformation long_name: Starting Region description: The starting product-specific region number associated with the data contained within this granule. ICESat-2 data products are separated by geographic regions. The data contained within a specific region are the same for ATL01 and ATL02. ATL03 regions differ slightly because of different geolocation segment locations caused by the irregular shape of the Earth. The region indices for other products are completely independent. source: Derived origname: start_region fullnamepath: /ancillary_data/start_region |
| ancillary_data_start_gpsweek: | Array of 32 bit Integers [FakeDim0 = 0..0] units: weeks from 1980-01-06 contentType: auxiliaryInformation long_name: Start GPSWeek of Granule (Actual) description: GPS week number of the first data point in the granule. source: Derived origname: start_gpsweek fullnamepath: /ancillary_data/start_gpsweek |
| gt3r_freeboard_beam_segment_beam_refsurf_sigma: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: reference surface sigma description: Reference surface height sigma (standard devaition) - weighted combination of lead sigmas in this beam for this swath segment source: ATBD section 5 origname: beam_refsurf_sigma fullnamepath: /gt3r/freeboard_beam_segment/beam_refsurf_sigma coordinates: gt3r_freeboard_beam_segment_delta_time gt3r_freeboard_beam_segment_latitude gt3r_freeboard_beam_segment_longitude |
| gt3r_freeboard_beam_segment_beam_refsurf_alongtrack_slope: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: degrees contentType: modelResult long_name: reference surface along track slope description: Reference surface height along track slope source: ATBD section 5 origname: beam_refsurf_alongtrack_slope fullnamepath: /gt3r/freeboard_beam_segment/beam_refsurf_alongtrack_slope coordinates: gt3r_freeboard_beam_segment_delta_time gt3r_freeboard_beam_segment_latitude gt3r_freeboard_beam_segment_longitude |
| gt3r_freeboard_beam_segment_beam_lead_ndx: | Array of 32 bit Integers [gt3r_freeboard_beam_segment_delta_time = 0..48] units: 1 contentType: referenceInformation long_name: index first lead description: 1-based index to the first /GTx/leads lead used for this beam's reference surface. source: Sea Ice ATBD origname: beam_lead_ndx fullnamepath: /gt3r/freeboard_beam_segment/beam_lead_ndx coordinates: gt3r_freeboard_beam_segment_delta_time gt3r_freeboard_beam_segment_latitude gt3r_freeboard_beam_segment_longitude |
| gt3r_freeboard_beam_segment_beam_fb_height: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Beam Freeboard mean swath-segment description: Mean of the Freeboard height-segments in freeboard beam-segment source: ATBD section 5 origname: beam_fb_height fullnamepath: /gt3r/freeboard_beam_segment/beam_fb_height coordinates: gt3r_freeboard_beam_segment_delta_time gt3r_freeboard_beam_segment_latitude gt3r_freeboard_beam_segment_longitude |
| gt3r_freeboard_beam_segment_height_segments_msw_flag: | Array of 16 bit Integers [gt3r_freeboard_beam_segment_height_segments_delta_time = 0..6824] units: 1 contentType: modelResult long_name: multiple scattering warning flag description: Multiple Scattering warning flag. The multiple scattering warning flag (ATL09 parameter msw_flag) has values from -1 to 5 where zero means no multiple scattering and 5 the greatest. If no layers were detected, then msw_flag = 0. If blowing snow is detected and its estimated optical depth is greater than or equal to 0.5, then msw_flag = 5. If the blowing snow optical depth is less than 0.5, then msw_flag = 4. If no blowing snow is detected but there are cloud or aerosol layers detected, the msw_flag assumes values of 1 to 3 based on the height of the bottom of the lowest layer: < 1 km, msw_flag = 3; 1-3 km, msw_flag = 2; > 3km, msw_flag = 1. A value of -1 indicates that the signal to noise of the data was too low to reliably ascertain the presence of cloud or blowing snow. We expect values of -1 to occur only during daylight. source: ATL09 flag_meanings: cannot_determine no_layers layer_gt_3km layer_between_1_and_3_km layer_lt_1km blow_snow_od_lt_0.5 blow_snow_od_gt_0.5 flag_values: -1, 0, 1, 2, 3, 4, 5 valid_min: -1 valid_max: 5 origname: msw_flag fullnamepath: /gt3r/freeboard_beam_segment/height_segments/msw_flag coordinates: gt3r_freeboard_beam_segment_height_segments_delta_time gt3r_freeboard_beam_segment_height_segments_latitude gt3r_freeboard_beam_segment_height_segments_longitude |
| gt3r_freeboard_beam_segment_height_segments_cloud_flag_atm: | Array of 16 bit Integers [gt3r_freeboard_beam_segment_height_segments_delta_time = 0..6824] units: 1 long_name: cloud flag atm contentType: modelResult description: Number of layers found from the backscatter profile using the DDA layer finder source: ATL09 valid_min: 0 valid_max: 10 origname: cloud_flag_atm fullnamepath: /gt3r/freeboard_beam_segment/height_segments/cloud_flag_atm coordinates: gt3r_freeboard_beam_segment_height_segments_delta_time gt3r_freeboard_beam_segment_height_segments_latitude gt3r_freeboard_beam_segment_height_segments_longitude |
| gt3r_freeboard_beam_segment_height_segments_height_segment_length_seg: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_height_segments_delta_time = 0..6824] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: length of segment description: Along-track length of segment containing n_photons_actual ATL07 length_seg) source: Sea Ice ATBD origname: height_segment_length_seg fullnamepath: /gt3r/freeboard_beam_segment/height_segments/height_segment_length_seg coordinates: gt3r_freeboard_beam_segment_height_segments_delta_time gt3r_freeboard_beam_segment_height_segments_latitude gt3r_freeboard_beam_segment_height_segments_longitude |
| gt3r_freeboard_beam_segment_height_segments_height_segment_ib: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_height_segments_delta_time = 0..6824] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: inverted barometer effect description: Inverted barometer effect calculated from surface pressure source: ATBD section 4.2 origname: height_segment_ib fullnamepath: /gt3r/freeboard_beam_segment/height_segments/height_segment_ib coordinates: gt3r_freeboard_beam_segment_height_segments_delta_time gt3r_freeboard_beam_segment_height_segments_latitude gt3r_freeboard_beam_segment_height_segments_longitude |
| gt3r_freeboard_beam_segment_height_segments_bsnow_con: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_height_segments_delta_time = 0..6824] _FillValue: 3.402823466e+38 units: 1 contentType: modelResult long_name: Blowing snow confidence description: Blowing snow confidence source: ATL09 origname: bsnow_con fullnamepath: /gt3r/freeboard_beam_segment/height_segments/bsnow_con coordinates: gt3r_freeboard_beam_segment_height_segments_delta_time gt3r_freeboard_beam_segment_height_segments_latitude gt3r_freeboard_beam_segment_height_segments_longitude |
| gt3r_freeboard_beam_segment_height_segments_layer_flag: | Array of 16 bit Integers [gt3r_freeboard_beam_segment_height_segments_delta_time = 0..6824] units: 1 contentType: modelResult long_name: consolidated cloud flag description: This flag is a combination of multiple flags (cloud_flag_atm, cloud_flag_asr, and bsnow_con) and takes daytime/nighttime into consideration. A value of 1 means clouds or blowing snow are likely present. A value of 0 indicates the likely absence of clouds or blowing snow. source: ATL09 flag_meanings: likely_clear likely_cloudy flag_values: 0, 1 valid_min: 0 valid_max: 1 origname: layer_flag fullnamepath: /gt3r/freeboard_beam_segment/height_segments/layer_flag coordinates: gt3r_freeboard_beam_segment_height_segments_delta_time gt3r_freeboard_beam_segment_height_segments_latitude gt3r_freeboard_beam_segment_height_segments_longitude |
| gt3r_freeboard_beam_segment_height_segments_backgr_calc: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_height_segments_delta_time = 0..6824] _FillValue: 3.402823466e+38 units: hz contentType: modelResult long_name: background count rate calculated description: Calculated background count rate based on sun angle, surface slope, unit reflectance source: ATL07 origname: backgr_calc fullnamepath: /gt3r/freeboard_beam_segment/height_segments/backgr_calc coordinates: gt3r_freeboard_beam_segment_height_segments_delta_time gt3r_freeboard_beam_segment_height_segments_latitude gt3r_freeboard_beam_segment_height_segments_longitude |
| gt3r_freeboard_beam_segment_height_segments_bsnow_h: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_height_segments_delta_time = 0..6824] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Blowing snow top height description: Blowing snow layer top height source: ATL09 origname: bsnow_h fullnamepath: /gt3r/freeboard_beam_segment/height_segments/bsnow_h coordinates: gt3r_freeboard_beam_segment_height_segments_delta_time gt3r_freeboard_beam_segment_height_segments_latitude gt3r_freeboard_beam_segment_height_segments_longitude |
| gt3r_freeboard_beam_segment_height_segments_longitude: | Array of 64 bit Reals [gt3r_freeboard_beam_segment_height_segments_delta_time = 0..6824] units: degrees_east contentType: referenceInformation long_name: Longitude standard_name: longitude description: Longitude, WGS84, East=+,Lon of segment center source: Sea Ice ATBD valid_min: -180.00000000000000 valid_max: 180.00000000000000 origname: longitude fullnamepath: /gt3r/freeboard_beam_segment/height_segments/longitude coordinates: gt3r_freeboard_beam_segment_height_segments_delta_time gt3r_freeboard_beam_segment_height_segments_latitude |
| gt3r_freeboard_beam_segment_height_segments_background_r_norm: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_height_segments_delta_time = 0..6824] _FillValue: 3.402823466e+38 units: hz contentType: modelResult long_name: normalized background (50 shot) description: Background rate normalized to a fixed solar elevation angle source: ATL07 origname: background_r_norm fullnamepath: /gt3r/freeboard_beam_segment/height_segments/background_r_norm coordinates: gt3r_freeboard_beam_segment_height_segments_delta_time gt3r_freeboard_beam_segment_height_segments_latitude gt3r_freeboard_beam_segment_height_segments_longitude |
| gt3r_freeboard_beam_segment_height_segments_latitude: | Array of 64 bit Reals [gt3r_freeboard_beam_segment_height_segments_delta_time = 0..6824] units: degrees_north contentType: referenceInformation long_name: Latitude standard_name: latitude description: Latitude, WGS84, North=+, Lat of segment center source: Sea Ice ATBD valid_min: -90.000000000000000 valid_max: 90.000000000000000 origname: latitude fullnamepath: /gt3r/freeboard_beam_segment/height_segments/latitude coordinates: gt3r_freeboard_beam_segment_height_segments_delta_time gt3r_freeboard_beam_segment_height_segments_longitude |
| gt3r_freeboard_beam_segment_height_segments_ice_conc: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_height_segments_delta_time = 0..6824] _FillValue: 3.402823466e+38 units: 1 contentType: modelResult long_name: sea ice concentration description: Sea ice concentration percentage source: ATL07/ANC31 origname: ice_conc fullnamepath: /gt3r/freeboard_beam_segment/height_segments/ice_conc coordinates: gt3r_freeboard_beam_segment_height_segments_delta_time gt3r_freeboard_beam_segment_height_segments_latitude gt3r_freeboard_beam_segment_height_segments_longitude |
| gt3r_freeboard_beam_segment_height_segments_cloud_flag_asr: | Array of 16 bit Integers [gt3r_freeboard_beam_segment_height_segments_delta_time = 0..6824] units: 1 contentType: modelResult long_name: cloud flag asr description: Cloud flag (probability) from apparent surface reflectance. 0=clear with high confidence; 1=clear with medium confidence; 2=clear with low confidence; 3=cloudy with low confidence; 4=cloudy with medium confidence; 5=cloudy with high confidence; 6=unknown source: ATL09 flag_meanings: clear_with_high_confidence clear_with_medium_confidence clear_with_low_confidence cloudy_with_low_confidence cloudy_with_medium_confidence cloudy_with_high_confidence unknown flag_values: 0, 1, 2, 3, 4, 5, 6 valid_min: 0 valid_max: 6 origname: cloud_flag_asr fullnamepath: /gt3r/freeboard_beam_segment/height_segments/cloud_flag_asr coordinates: gt3r_freeboard_beam_segment_height_segments_delta_time gt3r_freeboard_beam_segment_height_segments_latitude gt3r_freeboard_beam_segment_height_segments_longitude |
| gt3r_freeboard_beam_segment_height_segments_height_segment_ssh_flag: | Array of 16 bit Integers [gt3r_freeboard_beam_segment_height_segments_delta_time = 0..6824] units: 1 contentType: referenceInformation long_name: Sea Surface Height Flag description: Identifiesthe height segments that are candidates for use as sea surface reference in freeboard calculations in ATL10. The flags are set as follows: 0 = sea ice; 1 = sea surface source: Sea Ice ATBD flag_meanings: sea_ice ice_surface flag_values: 0, 1 valid_min: 0 valid_max: 1 origname: height_segment_ssh_flag fullnamepath: /gt3r/freeboard_beam_segment/height_segments/height_segment_ssh_flag coordinates: gt3r_freeboard_beam_segment_height_segments_delta_time gt3r_freeboard_beam_segment_height_segments_latitude gt3r_freeboard_beam_segment_height_segments_longitude |
| gt3r_freeboard_beam_segment_height_segments_height_segment_surf_sigma: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_height_segments_delta_time = 0..6824] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: h surface sigma description: Sigma (standard deviation) estimate of the surface height (ATL07 h_surface_error) source: Sea Ice ATBD origname: height_segment_surf_sigma fullnamepath: /gt3r/freeboard_beam_segment/height_segments/height_segment_surf_sigma coordinates: gt3r_freeboard_beam_segment_height_segments_delta_time gt3r_freeboard_beam_segment_height_segments_latitude gt3r_freeboard_beam_segment_height_segments_longitude |
| gt3r_freeboard_beam_segment_height_segments_backgr_r_200: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_height_segments_delta_time = 0..6824] _FillValue: 3.402823466e+38 units: hz contentType: modelResult long_name: background rate 200 hz description: Background count rate, averaged over the segment based on ATLAS 50 pulse counts source: ATL09 origname: backgr_r_200 fullnamepath: /gt3r/freeboard_beam_segment/height_segments/backgr_r_200 coordinates: gt3r_freeboard_beam_segment_height_segments_delta_time gt3r_freeboard_beam_segment_height_segments_latitude gt3r_freeboard_beam_segment_height_segments_longitude |
| gt3r_freeboard_beam_segment_height_segments_height_segment_height: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_height_segments_delta_time = 0..6824] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: height of segment surface description: Mean height from along-track segment fit detremined by the sea ice algorithm(ATL07 h_si) source: Sea Ice ATBD origname: height_segment_height fullnamepath: /gt3r/freeboard_beam_segment/height_segments/height_segment_height coordinates: gt3r_freeboard_beam_segment_height_segments_delta_time gt3r_freeboard_beam_segment_height_segments_latitude gt3r_freeboard_beam_segment_height_segments_longitude |
| gt3r_freeboard_beam_segment_height_segments_height_segment_type: | Array of 16 bit Integers [gt3r_freeboard_beam_segment_height_segments_delta_time = 0..6824] units: 1 contentType: referenceInformation long_name: Segment surface type description: Value that indicates segment surface type as sea ice or different types of sea surface. 0=cloud covered: rsurf source: ATBD section 4.3 flag_meanings: cloud_covered other specular_lead_low_w_bkg specular_lead_low specular_lead_high_w_bkg specular_lead_high dark_lead_smooth_w_bkg dark_lead_smooth dark_lead_rough_w_bkg dark_lead_rough flag_values: 0 valid_min: 0 valid_max: 9 origname: height_segment_type fullnamepath: /gt3r/freeboard_beam_segment/height_segments/height_segment_type coordinates: gt3r_freeboard_beam_segment_height_segments_delta_time gt3r_freeboard_beam_segment_height_segments_latitude gt3r_freeboard_beam_segment_height_segments_longitude |
| gt3r_freeboard_beam_segment_height_segments_height_segment_confidence: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_height_segments_delta_time = 0..6824] _FillValue: 3.402823466e+38 units: 1 contentType: modelResult long_name: Surface height confidence description: Confidence level in the surface height estimate based on the number of photons; the background noise rate; and the error analysis (ATL07 h_confidence) source: Sea Ice ATBD origname: height_segment_confidence fullnamepath: /gt3r/freeboard_beam_segment/height_segments/height_segment_confidence coordinates: gt3r_freeboard_beam_segment_height_segments_delta_time gt3r_freeboard_beam_segment_height_segments_latitude gt3r_freeboard_beam_segment_height_segments_longitude |
| gt3r_freeboard_beam_segment_height_segments_asr_25: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_height_segments_delta_time = 0..6824] _FillValue: 3.402823466e+38 units: 1 contentType: modelResult long_name: Apparent surface reflectance at 25 hz description: Apparent surface reflectance at 25 hz, average to the sea ice segment source: ATL07 origname: asr_25 fullnamepath: /gt3r/freeboard_beam_segment/height_segments/asr_25 coordinates: gt3r_freeboard_beam_segment_height_segments_delta_time gt3r_freeboard_beam_segment_height_segments_latitude gt3r_freeboard_beam_segment_height_segments_longitude |
| gt3r_freeboard_beam_segment_height_segments_height_segment_w_gaussian: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_height_segments_delta_time = 0..6824] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: width of best fit gaussian description: Width of best fit gaussian (ATL07 w_gaussian) source: Sea Ice ATBD origname: height_segment_w_gaussian fullnamepath: /gt3r/freeboard_beam_segment/height_segments/height_segment_w_gaussian coordinates: gt3r_freeboard_beam_segment_height_segments_delta_time gt3r_freeboard_beam_segment_height_segments_latitude gt3r_freeboard_beam_segment_height_segments_longitude |
| gt3r_freeboard_beam_segment_height_segments_photon_rate: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_height_segments_delta_time = 0..6824] _FillValue: 3.402823466e+38 units: 1 contentType: modelResult long_name: photon rate description: Photon count rate, averaged over sea ice segment. source: ATL07 origname: photon_rate fullnamepath: /gt3r/freeboard_beam_segment/height_segments/photon_rate coordinates: gt3r_freeboard_beam_segment_height_segments_delta_time gt3r_freeboard_beam_segment_height_segments_latitude gt3r_freeboard_beam_segment_height_segments_longitude |
| gt3r_freeboard_beam_segment_height_segments_backgr_r_25: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_height_segments_delta_time = 0..6824] _FillValue: 3.402823466e+38 units: hz contentType: modelResult long_name: background rate 25 hz description: Background count rate, averaged over the segment based on 25 hz atmosphere source: ATL09 origname: backgr_r_25 fullnamepath: /gt3r/freeboard_beam_segment/height_segments/backgr_r_25 coordinates: gt3r_freeboard_beam_segment_height_segments_delta_time gt3r_freeboard_beam_segment_height_segments_latitude gt3r_freeboard_beam_segment_height_segments_longitude |
| gt3r_freeboard_beam_segment_height_segments_height_segment_rms: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_height_segments_delta_time = 0..6824] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: height rms description: RMS difference between sea ice modeled and observed photon height distribution(ATL07 h_rms) source: Sea Ice ATBD origname: height_segment_rms fullnamepath: /gt3r/freeboard_beam_segment/height_segments/height_segment_rms coordinates: gt3r_freeboard_beam_segment_height_segments_delta_time gt3r_freeboard_beam_segment_height_segments_latitude gt3r_freeboard_beam_segment_height_segments_longitude |
| gt3r_freeboard_beam_segment_beam_refsurf_interp_flag: | Array of 16 bit Integers [gt3r_freeboard_beam_segment_delta_time = 0..48] units: 1 long_name: reference surface interpolation flag description: Identifies segments with reference surface height filled through interpolation. -1 = no valid refrence surface was determined; 0= refsur computed from leads in this swath; 1 = reference surface inferred from data not in this swath; 2 = previous or next adjacent reference surface was used; 3 = filled based on the the upper height minus an offset source: ATBD section 5 flag_meanings: no_surf leads_in_swath inferred neighbor_used upper_height_minus_offset flag_values: -1, 0, 1, 2, 3 valid_min: -1 valid_max: 3 contentType: referenceInformation origname: beam_refsurf_interp_flag fullnamepath: /gt3r/freeboard_beam_segment/beam_refsurf_interp_flag coordinates: gt3r_freeboard_beam_segment_delta_time gt3r_freeboard_beam_segment_latitude gt3r_freeboard_beam_segment_longitude |
| gt3r_freeboard_beam_segment_longitude: | Array of 64 bit Reals [gt3r_freeboard_beam_segment_delta_time = 0..48] units: degrees_east contentType: referenceInformation long_name: Center longitude of freeboard swath-segment standard_name: longitude description: Center longitude of freeboard swath-segment (mean of all freeboard longitudes) source: ATBD section 5 origname: longitude fullnamepath: /gt3r/freeboard_beam_segment/longitude coordinates: gt3r_freeboard_beam_segment_delta_time gt3r_freeboard_beam_segment_latitude |
| gt3r_freeboard_beam_segment_beam_refsurf_height: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: reference surface mean description: Reference surface height -weighted combination of leads in this beam for this swath segment source: ATBD section 5 origname: beam_refsurf_height fullnamepath: /gt3r/freeboard_beam_segment/beam_refsurf_height coordinates: gt3r_freeboard_beam_segment_delta_time gt3r_freeboard_beam_segment_latitude gt3r_freeboard_beam_segment_longitude |
| gt3r_freeboard_beam_segment_latitude: | Array of 64 bit Reals [gt3r_freeboard_beam_segment_delta_time = 0..48] units: degrees_north contentType: referenceInformation long_name: Center latitude of freeboard swath-segment standard_name: latitude description: Center latitude of freeboard swath-segment (mean of all freeboard latitudes) source: ATBD section 5 origname: latitude fullnamepath: /gt3r/freeboard_beam_segment/latitude coordinates: gt3r_freeboard_beam_segment_delta_time gt3r_freeboard_beam_segment_longitude |
| gt3r_freeboard_beam_segment_beam_freeboard_height_segment_id: | Array of 32 bit Integers [gt3r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6824] units: 1 long_name: Identifier of each height segment description: Identifier of each height segment source: Sea Ice ATBD contentType: referenceInformation origname: height_segment_id fullnamepath: /gt3r/freeboard_beam_segment/beam_freeboard/height_segment_id coordinates: gt3r_freeboard_beam_segment_beam_freeboard_delta_time gt3r_freeboard_beam_segment_beam_freeboard_latitude gt3r_freeboard_beam_segment_beam_freeboard_longitude |
| gt3r_freeboard_beam_segment_beam_freeboard_beam_fb_height: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6824] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Freeboard estimate description: Estimate of the freeboard height based on the beam h reference source: ATBD section 5 origname: beam_fb_height fullnamepath: /gt3r/freeboard_beam_segment/beam_freeboard/beam_fb_height coordinates: gt3r_freeboard_beam_segment_beam_freeboard_delta_time gt3r_freeboard_beam_segment_beam_freeboard_latitude gt3r_freeboard_beam_segment_beam_freeboard_longitude |
| gt3r_freeboard_beam_segment_beam_freeboard_beam_refsur_ndx: | Array of 32 bit Integers [gt3r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6824] units: 1 contentType: referenceInformation long_name: Index to beam refsur description: 1-based index to reference surface used for this freeboard height. Its value is identical to the fbswath_ndx. This index also idenifies the swath segment with which the beam freeboard associated. source: ATBD section 5 origname: beam_refsur_ndx fullnamepath: /gt3r/freeboard_beam_segment/beam_freeboard/beam_refsur_ndx coordinates: gt3r_freeboard_beam_segment_beam_freeboard_delta_time gt3r_freeboard_beam_segment_beam_freeboard_latitude gt3r_freeboard_beam_segment_beam_freeboard_longitude |
| gt3r_freeboard_beam_segment_beam_freeboard_seg_dist_x: | Array of 64 bit Reals [gt3r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6824] units: meters contentType: physicalMeasurement long_name: Along Track Distance description: Along-track distance from the equator crossing to the segment center. source: Sea Ice ATBD origname: seg_dist_x fullnamepath: /gt3r/freeboard_beam_segment/beam_freeboard/seg_dist_x coordinates: gt3r_freeboard_beam_segment_beam_freeboard_delta_time gt3r_freeboard_beam_segment_beam_freeboard_latitude gt3r_freeboard_beam_segment_beam_freeboard_longitude |
| gt3r_freeboard_beam_segment_beam_freeboard_longitude: | Array of 64 bit Reals [gt3r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6824] units: degrees_east contentType: referenceInformation long_name: Longitude standard_name: longitude description: Longitude, WGS84, East=+,Lon of segment center source: Sea Ice ATBD valid_min: -180.00000000000000 valid_max: 180.00000000000000 origname: longitude fullnamepath: /gt3r/freeboard_beam_segment/beam_freeboard/longitude coordinates: gt3r_freeboard_beam_segment_beam_freeboard_delta_time gt3r_freeboard_beam_segment_beam_freeboard_latitude |
| gt3r_freeboard_beam_segment_beam_freeboard_latitude: | Array of 64 bit Reals [gt3r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6824] units: degrees_north contentType: referenceInformation long_name: Latitude standard_name: latitude description: Latitude, WGS84, North=+, Lat of segment center source: Sea Ice ATBD valid_min: -90.000000000000000 valid_max: 90.000000000000000 origname: latitude fullnamepath: /gt3r/freeboard_beam_segment/beam_freeboard/latitude coordinates: gt3r_freeboard_beam_segment_beam_freeboard_delta_time gt3r_freeboard_beam_segment_beam_freeboard_longitude |
| gt3r_freeboard_beam_segment_beam_freeboard_geoseg_beg: | Array of 32 bit Integers [gt3r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6824] units: 1 contentType: referenceInformation long_name: Beginning GEOSEG description: Geolocation segment (geoseg) ID associated with the first photon used in this sea ice segment source: Sea Ice ATBD origname: geoseg_beg fullnamepath: /gt3r/freeboard_beam_segment/beam_freeboard/geoseg_beg coordinates: gt3r_freeboard_beam_segment_beam_freeboard_delta_time gt3r_freeboard_beam_segment_beam_freeboard_latitude gt3r_freeboard_beam_segment_beam_freeboard_longitude |
| gt3r_freeboard_beam_segment_beam_freeboard_beam_fb_confidence: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6824] _FillValue: 3.402823466e+38 units: 1 contentType: referenceInformation long_name: Freeboard confidence description: Confidence level in the freeboard estimate source: ATBD section 5 origname: beam_fb_confidence fullnamepath: /gt3r/freeboard_beam_segment/beam_freeboard/beam_fb_confidence coordinates: gt3r_freeboard_beam_segment_beam_freeboard_delta_time gt3r_freeboard_beam_segment_beam_freeboard_latitude gt3r_freeboard_beam_segment_beam_freeboard_longitude |
| gt3r_freeboard_beam_segment_beam_freeboard_beam_fb_sigma: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6824] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Freeboard sigma estimate description: estimate of the sigma ( standard deviation) for each beam freeboard height source: ATBD section 5 origname: beam_fb_sigma fullnamepath: /gt3r/freeboard_beam_segment/beam_freeboard/beam_fb_sigma coordinates: gt3r_freeboard_beam_segment_beam_freeboard_delta_time gt3r_freeboard_beam_segment_beam_freeboard_latitude gt3r_freeboard_beam_segment_beam_freeboard_longitude |
| gt3r_freeboard_beam_segment_beam_freeboard_geoseg_end: | Array of 32 bit Integers [gt3r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6824] units: 1 contentType: referenceInformation long_name: Ending GEOSEG description: Geolocation segment (geoseg) ID associated with the last photon used in this sea ice segment source: Sea Ice ATBD origname: geoseg_end fullnamepath: /gt3r/freeboard_beam_segment/beam_freeboard/geoseg_end coordinates: gt3r_freeboard_beam_segment_beam_freeboard_delta_time gt3r_freeboard_beam_segment_beam_freeboard_latitude gt3r_freeboard_beam_segment_beam_freeboard_longitude |
| gt3r_freeboard_beam_segment_beam_freeboard_beam_fb_quality_flag: | Array of 16 bit Integers [gt3r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6824] units: 1 contentType: referenceInformation long_name: Flag describing the quality of the freeboard estimate description: Flag describing the quality of the results of the along-track fit. (-1=height value is invalid; 1=ngrid_w < wlength/2; 2=ngrid_w >= wlength/2; 3=ngrid_dt < dtlength/2; 4=ngrid_dt >= dtlength/2; 5=ngrid_dt >= (dtlength-2): where 1 is best and 5 is poor). source: ATBD section 5 flag_meanings: invalid best high med low poor flag_values: -1, 1, 2, 3, 4, 5 valid_min: -1 valid_max: 5 origname: beam_fb_quality_flag fullnamepath: /gt3r/freeboard_beam_segment/beam_freeboard/beam_fb_quality_flag coordinates: gt3r_freeboard_beam_segment_beam_freeboard_delta_time gt3r_freeboard_beam_segment_beam_freeboard_latitude gt3r_freeboard_beam_segment_beam_freeboard_longitude |
| gt3r_freeboard_beam_segment_beam_fb_length: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Length ofbeam freeboard swath-segment description: Length of freeboard beam-segment source: ATBD section 5 origname: beam_fb_length fullnamepath: /gt3r/freeboard_beam_segment/beam_fb_length coordinates: gt3r_freeboard_beam_segment_delta_time gt3r_freeboard_beam_segment_latitude gt3r_freeboard_beam_segment_longitude |
| gt3r_freeboard_beam_segment_beam_fb_hist: | Array of 16 bit Integers [gt3r_freeboard_beam_segment_delta_time = 0..48][gt3r_freeboard_beam_segment_ds_si_hist_bins = 0..160] units: 1 contentType: referenceInformation long_name: Beam freeboard histogram description: Beam Freeboard (using beam fbswath reference surface height) histogram (distribution) for this freeboard beam-segment source: ATBD section 5 origname: beam_fb_hist fullnamepath: /gt3r/freeboard_beam_segment/beam_fb_hist coordinates: gt3r_freeboard_beam_segment_delta_time gt3r_freeboard_beam_segment_latitude gt3r_freeboard_beam_segment_longitude |
| gt3r_freeboard_beam_segment_geophysical_height_segment_dac: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_geophysical_delta_time = 0..6824] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: Dynamic Atmosphere Correction description: Dynamic Atmospheric Correction (DAC) includes inverted barometer (IB) effect (From ATL07) source: Sea Ice ATBD origname: height_segment_dac fullnamepath: /gt3r/freeboard_beam_segment/geophysical/height_segment_dac coordinates: gt3r_freeboard_beam_segment_geophysical_delta_time gt3r_freeboard_beam_segment_geophysical_latitude gt3r_freeboard_beam_segment_geophysical_longitude |
| gt3r_freeboard_beam_segment_geophysical_height_segment_tide_pole: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_geophysical_delta_time = 0..6824] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: Pole Tide description: Pole Tide -Rotational deformation due to polar motion (-1.5 to 1.5 cm). (From ATL07) source: Sea Ice ATBD origname: height_segment_tide_pole fullnamepath: /gt3r/freeboard_beam_segment/geophysical/height_segment_tide_pole coordinates: gt3r_freeboard_beam_segment_geophysical_delta_time gt3r_freeboard_beam_segment_geophysical_latitude gt3r_freeboard_beam_segment_geophysical_longitude |
| gt3r_freeboard_beam_segment_geophysical_longitude: | Array of 64 bit Reals [gt3r_freeboard_beam_segment_geophysical_delta_time = 0..6824] units: degrees_east contentType: referenceInformation long_name: Longitude standard_name: longitude description: Longitude, WGS84, East=+,Lon of segment center source: Sea Ice ATBD valid_min: -180.00000000000000 valid_max: 180.00000000000000 origname: longitude fullnamepath: /gt3r/freeboard_beam_segment/geophysical/longitude coordinates: gt3r_freeboard_beam_segment_geophysical_delta_time gt3r_freeboard_beam_segment_geophysical_latitude |
| gt3r_freeboard_beam_segment_geophysical_latitude: | Array of 64 bit Reals [gt3r_freeboard_beam_segment_geophysical_delta_time = 0..6824] units: degrees_north long_name: Latitude standard_name: latitude description: Latitude, WGS84, North=+, Lat of segment center source: Sea Ice ATBD valid_min: -90.000000000000000 valid_max: 90.000000000000000 contentType: referenceInformation origname: latitude fullnamepath: /gt3r/freeboard_beam_segment/geophysical/latitude coordinates: gt3r_freeboard_beam_segment_geophysical_delta_time gt3r_freeboard_beam_segment_geophysical_longitude |
| gt3r_freeboard_beam_segment_geophysical_height_segment_load: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_geophysical_delta_time = 0..6824] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: Load Tide description: Load Tide - Local displacement due to Ocean Loading (-6 to 0 cm).(From ATL07) source: Sea Ice ATBD origname: height_segment_load fullnamepath: /gt3r/freeboard_beam_segment/geophysical/height_segment_load coordinates: gt3r_freeboard_beam_segment_geophysical_delta_time gt3r_freeboard_beam_segment_geophysical_latitude gt3r_freeboard_beam_segment_geophysical_longitude |
| gt3r_freeboard_beam_segment_geophysical_height_segment_geoid: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_geophysical_delta_time = 0..6824] contentType: referenceInformation long_name: EGM2008 Geoid description: Geoid height above WGS-84 reference ellipsoid (range -107 to 86m), based on the EGM2008 model.(From ATL07) source: Sea Ice ATBD _FillValue: 3.402823466e+38 units: meters origname: height_segment_geoid fullnamepath: /gt3r/freeboard_beam_segment/geophysical/height_segment_geoid coordinates: gt3r_freeboard_beam_segment_geophysical_delta_time gt3r_freeboard_beam_segment_geophysical_latitude gt3r_freeboard_beam_segment_geophysical_longitude |
| gt3r_freeboard_beam_segment_geophysical_height_segment_ocean: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_geophysical_delta_time = 0..6824] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: Ocean Tide description: Ocean Tides including diurnal and semi-diurnal (harmonic analysis), and longer period tides (dynamic and self-consistent equilibrium) (From ATL07) source: Sea Ice ATBD origname: height_segment_ocean fullnamepath: /gt3r/freeboard_beam_segment/geophysical/height_segment_ocean coordinates: gt3r_freeboard_beam_segment_geophysical_delta_time gt3r_freeboard_beam_segment_geophysical_latitude gt3r_freeboard_beam_segment_geophysical_longitude |
| gt3r_freeboard_beam_segment_geophysical_height_segment_mss: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_geophysical_delta_time = 0..6824] _FillValue: 3.402823466e+38 units: meters contentType: referenceInformation long_name: Mean Sea Surface description: Mean sea surface height above WGS-84 reference ellipsoid. (From ATL07, includes tide-free geoid and mean dynamic topography source: Sea Ice ATBD origname: height_segment_mss fullnamepath: /gt3r/freeboard_beam_segment/geophysical/height_segment_mss coordinates: gt3r_freeboard_beam_segment_geophysical_delta_time gt3r_freeboard_beam_segment_geophysical_latitude gt3r_freeboard_beam_segment_geophysical_longitude |
| gt3r_freeboard_beam_segment_geophysical_height_segment_earth: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_geophysical_delta_time = 0..6824] contentType: referenceInformation long_name: Earth Tide description: Solid Earth Tide(From ATL07) source: Sea Ice ATBD _FillValue: 3.402823466e+38 units: meters origname: height_segment_earth fullnamepath: /gt3r/freeboard_beam_segment/geophysical/height_segment_earth coordinates: gt3r_freeboard_beam_segment_geophysical_delta_time gt3r_freeboard_beam_segment_geophysical_latitude gt3r_freeboard_beam_segment_geophysical_longitude |
| gt3r_freeboard_beam_segment_fbswath_ndx: | Array of 32 bit Integers [gt3r_freeboard_beam_segment_delta_time = 0..48] units: 1 contentType: referenceInformation long_name: Index to freeboard swath segment description: The 1-based fbswath_nx identifies the swath associated with each element. There are the same number of elements in the group /freeboard_swath_segment and in each of the /GTx/freeboard_beam_segment groups. The fbswath_nx identifies the fbswath_refsurf_height used to compute the fbswath_fb_height. It is the same index number that idenitifies the beam_refsurf_height to its swath and the beam_refsurf_height used to computed the beam_fb_height. source: ATBD section 5 origname: fbswath_ndx fullnamepath: /gt3r/freeboard_beam_segment/fbswath_ndx coordinates: gt3r_freeboard_beam_segment_delta_time gt3r_freeboard_beam_segment_latitude gt3r_freeboard_beam_segment_longitude |
| gt3r_freeboard_beam_segment_beam_fb_sigma: | Array of 32 bit Reals [gt3r_freeboard_beam_segment_delta_time = 0..48] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Beam Freeboard standard deviation swath-segment description: Freeboard standard deviation of the height-segments in freeboard beam-segment source: ATBD section 5 origname: beam_fb_sigma fullnamepath: /gt3r/freeboard_beam_segment/beam_fb_sigma coordinates: gt3r_freeboard_beam_segment_delta_time gt3r_freeboard_beam_segment_latitude gt3r_freeboard_beam_segment_longitude |
| gt3r_freeboard_beam_segment_beam_lead_n: | Array of 32 bit Integers [gt3r_freeboard_beam_segment_delta_time = 0..48] units: 1 contentType: referenceInformation long_name: Number of leads description: Number of leads used for this beam reference surface source: Sea Ice ATBD origname: beam_lead_n fullnamepath: /gt3r/freeboard_beam_segment/beam_lead_n coordinates: gt3r_freeboard_beam_segment_delta_time gt3r_freeboard_beam_segment_latitude gt3r_freeboard_beam_segment_longitude |
| gt3r_leads_lead_height: | Array of 32 bit Reals [gt3r_leads_delta_time = 0..42] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Lead height description: Lead height - weighted mean of consective sea surface heights used for this lead source: ATBD section 5 origname: lead_height fullnamepath: /gt3r/leads/lead_height coordinates: gt3r_leads_delta_time gt3r_leads_latitude gt3r_leads_longitude |
| gt3r_leads_lead_length: | Array of 32 bit Reals [gt3r_leads_delta_time = 0..42] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Lead size description: Along-track length of this lead source: ATBD section 5 origname: lead_length fullnamepath: /gt3r/leads/lead_length coordinates: gt3r_leads_delta_time gt3r_leads_latitude gt3r_leads_longitude |
| gt3r_leads_lead_sigma: | Array of 32 bit Reals [gt3r_leads_delta_time = 0..42] _FillValue: 3.402823466e+38 units: meters contentType: modelResult long_name: Lead sigma estimate description: Lead height sigma (standard deviation) estimate - weighted combination of sea surface height sigmas used as leads in this beam for this swath segment source: ATBD section 5 origname: lead_sigma fullnamepath: /gt3r/leads/lead_sigma coordinates: gt3r_leads_delta_time gt3r_leads_latitude gt3r_leads_longitude |
| gt3r_leads_longitude: | Array of 64 bit Reals [gt3r_leads_delta_time = 0..42] units: degrees_east contentType: referenceInformation long_name: Center longitude of lead standard_name: longitude description: Center longitude of lead (mean of all freeboard longitudes) source: ATBD section 5 origname: longitude fullnamepath: /gt3r/leads/longitude coordinates: gt3r_leads_delta_time gt3r_leads_latitude |
| gt3r_leads_latitude: | Array of 64 bit Reals [gt3r_leads_delta_time = 0..42] units: degrees_north contentType: referenceInformation long_name: Center latitude of lead standard_name: latitude description: Center latitude of lead (mean of all sea surface height latitudes) source: ATBD section 5 origname: latitude fullnamepath: /gt3r/leads/latitude coordinates: gt3r_leads_delta_time gt3r_leads_longitude |
| gt3r_leads_ssh_n: | Array of 32 bit Integers [gt3r_leads_delta_time = 0..42] units: 1 contentType: referenceInformation long_name: number of sea surface references description: Number of sea surface height segments used for this lead source: ATBD section 5 origname: ssh_n fullnamepath: /gt3r/leads/ssh_n coordinates: gt3r_leads_delta_time gt3r_leads_latitude gt3r_leads_longitude |
| gt3r_leads_ssh_ndx: | Array of 32 bit Integers [gt3r_leads_delta_time = 0..42] units: 1 contentType: referenceInformation long_name: index first sea surface description: 1-based index to the first freeboard element (i.e.first sea surface height segment) used for this lead source: Sea Ice ATBD origname: ssh_ndx fullnamepath: /gt3r/leads/ssh_ndx coordinates: gt3r_leads_delta_time gt3r_leads_latitude gt3r_leads_longitude |
| freeboard_swath_segment_delta_time: | Array of 64 bit Reals [freeboard_swath_segment_delta_time = 0..48] units: seconds since 2018-01-01 contentType: referenceInformation long_name: GPS elapsed time standard_name: time description: The center time assigned to this freeboard swath segment (mean of all freeboard times), in seconds since the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: ATBD section 5 coordinates: latitude longitude origname: delta_time fullnamepath: /freeboard_swath_segment/delta_time |
| freeboard_swath_segment_ds_si_hist_bins: | Array of 32 bit Integers [freeboard_swath_segment_ds_si_hist_bins = 0..160] units: 1 contentType: auxiliaryInformation long_name: Sea Ice Histogram Bins Dimension Scale description: Dimension scale indexing the sea ice histogram bins. The bin heights must be computed from information contained within the same group as the histogram. source: SeaIce ATBD origname: ds_si_hist_bins fullnamepath: /freeboard_swath_segment/ds_si_hist_bins |
| freeboard_swath_segment_gt1l_swath_freeboard_delta_time: | Array of 64 bit Reals [freeboard_swath_segment_gt1l_swath_freeboard_delta_time = 0..5673] units: seconds since 2018-01-01 contentType: referenceInformation long_name: Elapsed GPS seconds standard_name: time description: Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived via Time Tagging coordinates: latitude longitude origname: delta_time fullnamepath: /freeboard_swath_segment/gt1l/swath_freeboard/delta_time |
| freeboard_swath_segment_gt1r_swath_freeboard_delta_time: | Array of 64 bit Reals [freeboard_swath_segment_gt1r_swath_freeboard_delta_time = 0..6275] units: seconds since 2018-01-01 contentType: referenceInformation long_name: Elapsed GPS seconds standard_name: time description: Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived via Time Tagging coordinates: latitude longitude origname: delta_time fullnamepath: /freeboard_swath_segment/gt1r/swath_freeboard/delta_time |
| freeboard_swath_segment_gt2l_swath_freeboard_delta_time: | Array of 64 bit Reals [freeboard_swath_segment_gt2l_swath_freeboard_delta_time = 0..6316] units: seconds since 2018-01-01 contentType: referenceInformation long_name: Elapsed GPS seconds standard_name: time description: Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived via Time Tagging coordinates: latitude longitude origname: delta_time fullnamepath: /freeboard_swath_segment/gt2l/swath_freeboard/delta_time |
| freeboard_swath_segment_gt2r_swath_freeboard_delta_time: | Array of 64 bit Reals [freeboard_swath_segment_gt2r_swath_freeboard_delta_time = 0..6785] units: seconds since 2018-01-01 contentType: referenceInformation long_name: Elapsed GPS seconds standard_name: time description: Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived via Time Tagging coordinates: latitude longitude origname: delta_time fullnamepath: /freeboard_swath_segment/gt2r/swath_freeboard/delta_time |
| freeboard_swath_segment_gt3l_swath_freeboard_delta_time: | Array of 64 bit Reals [freeboard_swath_segment_gt3l_swath_freeboard_delta_time = 0..6448] units: seconds since 2018-01-01 contentType: referenceInformation long_name: Elapsed GPS seconds standard_name: time description: Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived via Time Tagging coordinates: latitude longitude origname: delta_time fullnamepath: /freeboard_swath_segment/gt3l/swath_freeboard/delta_time |
| freeboard_swath_segment_gt3r_swath_freeboard_delta_time: | Array of 64 bit Reals [freeboard_swath_segment_gt3r_swath_freeboard_delta_time = 0..6824] units: seconds since 2018-01-01 contentType: referenceInformation long_name: Elapsed GPS seconds standard_name: time description: Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived via Time Tagging coordinates: latitude longitude origname: delta_time fullnamepath: /freeboard_swath_segment/gt3r/swath_freeboard/delta_time |
| gt1l_freeboard_beam_segment_beam_freeboard_delta_time: | Array of 64 bit Reals [gt1l_freeboard_beam_segment_beam_freeboard_delta_time = 0..5673] units: seconds since 2018-01-01 contentType: physicalMeasurement long_name: Elapsed GPS seconds standard_name: time description: Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived via Time Tagging coordinates: latitude longitude origname: delta_time fullnamepath: /gt1l/freeboard_beam_segment/beam_freeboard/delta_time |
| gt1l_freeboard_beam_segment_delta_time: | Array of 64 bit Reals [gt1l_freeboard_beam_segment_delta_time = 0..48] units: seconds since 2018-01-01 contentType: referenceInformation long_name: Elapsed GPS seconds standard_name: time description: The center time assigned to this freeboard swath segment (mean of all freeboard times), in elapsed GPS seconds since the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: ATBD section 5 coordinates: latitude longitude origname: delta_time fullnamepath: /gt1l/freeboard_beam_segment/delta_time |
| gt1l_freeboard_beam_segment_ds_si_hist_bins: | Array of 32 bit Integers [gt1l_freeboard_beam_segment_ds_si_hist_bins = 0..160] units: 1 contentType: auxiliaryInformation long_name: Sea Ice Histogram Bins Dimension Scale description: Dimension scale indexing the sea ice histogram bins. The bin heights must be computed from information contained within the same group as the histogram. source: SeaIce ATBD origname: ds_si_hist_bins fullnamepath: /gt1l/freeboard_beam_segment/ds_si_hist_bins |
| gt1l_freeboard_beam_segment_geophysical_delta_time: | Array of 64 bit Reals [gt1l_freeboard_beam_segment_geophysical_delta_time = 0..5673] units: seconds since 2018-01-01 contentType: referenceInformation long_name: Elapsed GPS seconds standard_name: time description: Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived via Time Tagging coordinates: latitude longitude origname: delta_time fullnamepath: /gt1l/freeboard_beam_segment/geophysical/delta_time |
| gt1l_freeboard_beam_segment_height_segments_delta_time: | Array of 64 bit Reals [gt1l_freeboard_beam_segment_height_segments_delta_time = 0..5673] units: seconds since 2018-01-01 contentType: referenceInformation long_name: Elapsed GPS seconds standard_name: time description: Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived via Time Tagging coordinates: latitude longitude origname: delta_time fullnamepath: /gt1l/freeboard_beam_segment/height_segments/delta_time |
| gt1l_leads_delta_time: | Array of 64 bit Reals [gt1l_leads_delta_time = 0..36] units: seconds since 2018-01-01 contentType: physicalMeasurement long_name: Elapsed GPS seconds standard_name: time description: Center time of the lead in seconds since the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived via Time Tagging coordinates: latitude longitude origname: delta_time fullnamepath: /gt1l/leads/delta_time |
| gt1r_freeboard_beam_segment_beam_freeboard_delta_time: | Array of 64 bit Reals [gt1r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6275] units: seconds since 2018-01-01 contentType: physicalMeasurement long_name: Elapsed GPS seconds standard_name: time description: Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived via Time Tagging coordinates: latitude longitude origname: delta_time fullnamepath: /gt1r/freeboard_beam_segment/beam_freeboard/delta_time |
| gt1r_freeboard_beam_segment_delta_time: | Array of 64 bit Reals [gt1r_freeboard_beam_segment_delta_time = 0..48] units: seconds since 2018-01-01 contentType: referenceInformation long_name: Elapsed GPS seconds standard_name: time description: The center time assigned to this freeboard swath segment (mean of all freeboard times), in elapsed GPS seconds since the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: ATBD section 5 coordinates: latitude longitude origname: delta_time fullnamepath: /gt1r/freeboard_beam_segment/delta_time |
| gt1r_freeboard_beam_segment_ds_si_hist_bins: | Array of 32 bit Integers [gt1r_freeboard_beam_segment_ds_si_hist_bins = 0..160] units: 1 contentType: auxiliaryInformation long_name: Sea Ice Histogram Bins Dimension Scale description: Dimension scale indexing the sea ice histogram bins. The bin heights must be computed from information contained within the same group as the histogram. source: SeaIce ATBD origname: ds_si_hist_bins fullnamepath: /gt1r/freeboard_beam_segment/ds_si_hist_bins |
| gt1r_freeboard_beam_segment_geophysical_delta_time: | Array of 64 bit Reals [gt1r_freeboard_beam_segment_geophysical_delta_time = 0..6275] units: seconds since 2018-01-01 contentType: referenceInformation long_name: Elapsed GPS seconds standard_name: time description: Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived via Time Tagging coordinates: latitude longitude origname: delta_time fullnamepath: /gt1r/freeboard_beam_segment/geophysical/delta_time |
| gt1r_freeboard_beam_segment_height_segments_delta_time: | Array of 64 bit Reals [gt1r_freeboard_beam_segment_height_segments_delta_time = 0..6275] units: seconds since 2018-01-01 contentType: referenceInformation long_name: Elapsed GPS seconds standard_name: time description: Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived via Time Tagging coordinates: latitude longitude origname: delta_time fullnamepath: /gt1r/freeboard_beam_segment/height_segments/delta_time |
| gt1r_leads_delta_time: | Array of 64 bit Reals [gt1r_leads_delta_time = 0..44] units: seconds since 2018-01-01 contentType: physicalMeasurement long_name: Elapsed GPS seconds standard_name: time description: Center time of the lead in seconds since the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived via Time Tagging coordinates: latitude longitude origname: delta_time fullnamepath: /gt1r/leads/delta_time |
| gt2l_freeboard_beam_segment_beam_freeboard_delta_time: | Array of 64 bit Reals [gt2l_freeboard_beam_segment_beam_freeboard_delta_time = 0..6316] units: seconds since 2018-01-01 contentType: physicalMeasurement long_name: Elapsed GPS seconds standard_name: time description: Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived via Time Tagging coordinates: latitude longitude origname: delta_time fullnamepath: /gt2l/freeboard_beam_segment/beam_freeboard/delta_time |
| gt2l_freeboard_beam_segment_delta_time: | Array of 64 bit Reals [gt2l_freeboard_beam_segment_delta_time = 0..48] units: seconds since 2018-01-01 contentType: referenceInformation long_name: Elapsed GPS seconds standard_name: time description: The center time assigned to this freeboard swath segment (mean of all freeboard times), in elapsed GPS seconds since the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: ATBD section 5 coordinates: latitude longitude origname: delta_time fullnamepath: /gt2l/freeboard_beam_segment/delta_time |
| gt2l_freeboard_beam_segment_ds_si_hist_bins: | Array of 32 bit Integers [gt2l_freeboard_beam_segment_ds_si_hist_bins = 0..160] units: 1 contentType: auxiliaryInformation long_name: Sea Ice Histogram Bins Dimension Scale description: Dimension scale indexing the sea ice histogram bins. The bin heights must be computed from information contained within the same group as the histogram. source: SeaIce ATBD origname: ds_si_hist_bins fullnamepath: /gt2l/freeboard_beam_segment/ds_si_hist_bins |
| gt2l_freeboard_beam_segment_geophysical_delta_time: | Array of 64 bit Reals [gt2l_freeboard_beam_segment_geophysical_delta_time = 0..6316] units: seconds since 2018-01-01 contentType: referenceInformation long_name: Elapsed GPS seconds standard_name: time description: Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived via Time Tagging coordinates: latitude longitude origname: delta_time fullnamepath: /gt2l/freeboard_beam_segment/geophysical/delta_time |
| gt2l_freeboard_beam_segment_height_segments_delta_time: | Array of 64 bit Reals [gt2l_freeboard_beam_segment_height_segments_delta_time = 0..6316] units: seconds since 2018-01-01 contentType: referenceInformation long_name: Elapsed GPS seconds standard_name: time description: Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived via Time Tagging coordinates: latitude longitude origname: delta_time fullnamepath: /gt2l/freeboard_beam_segment/height_segments/delta_time |
| gt2l_leads_delta_time: | Array of 64 bit Reals [gt2l_leads_delta_time = 0..41] units: seconds since 2018-01-01 contentType: physicalMeasurement long_name: Elapsed GPS seconds standard_name: time description: Center time of the lead in seconds since the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived via Time Tagging coordinates: latitude longitude origname: delta_time fullnamepath: /gt2l/leads/delta_time |
| gt2r_freeboard_beam_segment_beam_freeboard_delta_time: | Array of 64 bit Reals [gt2r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6785] units: seconds since 2018-01-01 contentType: physicalMeasurement long_name: Elapsed GPS seconds standard_name: time description: Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived via Time Tagging coordinates: latitude longitude origname: delta_time fullnamepath: /gt2r/freeboard_beam_segment/beam_freeboard/delta_time |
| gt2r_freeboard_beam_segment_delta_time: | Array of 64 bit Reals [gt2r_freeboard_beam_segment_delta_time = 0..48] units: seconds since 2018-01-01 contentType: referenceInformation long_name: Elapsed GPS seconds standard_name: time description: The center time assigned to this freeboard swath segment (mean of all freeboard times), in elapsed GPS seconds since the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: ATBD section 5 coordinates: latitude longitude origname: delta_time fullnamepath: /gt2r/freeboard_beam_segment/delta_time |
| gt2r_freeboard_beam_segment_ds_si_hist_bins: | Array of 32 bit Integers [gt2r_freeboard_beam_segment_ds_si_hist_bins = 0..160] units: 1 contentType: auxiliaryInformation long_name: Sea Ice Histogram Bins Dimension Scale description: Dimension scale indexing the sea ice histogram bins. The bin heights must be computed from information contained within the same group as the histogram. source: SeaIce ATBD origname: ds_si_hist_bins fullnamepath: /gt2r/freeboard_beam_segment/ds_si_hist_bins |
| gt2r_freeboard_beam_segment_geophysical_delta_time: | Array of 64 bit Reals [gt2r_freeboard_beam_segment_geophysical_delta_time = 0..6785] units: seconds since 2018-01-01 contentType: referenceInformation long_name: Elapsed GPS seconds standard_name: time description: Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived via Time Tagging coordinates: latitude longitude origname: delta_time fullnamepath: /gt2r/freeboard_beam_segment/geophysical/delta_time |
| gt2r_freeboard_beam_segment_height_segments_delta_time: | Array of 64 bit Reals [gt2r_freeboard_beam_segment_height_segments_delta_time = 0..6785] units: seconds since 2018-01-01 contentType: referenceInformation long_name: Elapsed GPS seconds standard_name: time description: Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived via Time Tagging coordinates: latitude longitude origname: delta_time fullnamepath: /gt2r/freeboard_beam_segment/height_segments/delta_time |
| gt2r_leads_delta_time: | Array of 64 bit Reals [gt2r_leads_delta_time = 0..45] units: seconds since 2018-01-01 contentType: physicalMeasurement long_name: Elapsed GPS seconds standard_name: time description: Center time of the lead in seconds since the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived via Time Tagging coordinates: latitude longitude origname: delta_time fullnamepath: /gt2r/leads/delta_time |
| gt3l_freeboard_beam_segment_beam_freeboard_delta_time: | Array of 64 bit Reals [gt3l_freeboard_beam_segment_beam_freeboard_delta_time = 0..6448] units: seconds since 2018-01-01 contentType: physicalMeasurement long_name: Elapsed GPS seconds standard_name: time description: Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived via Time Tagging coordinates: latitude longitude origname: delta_time fullnamepath: /gt3l/freeboard_beam_segment/beam_freeboard/delta_time |
| gt3l_freeboard_beam_segment_delta_time: | Array of 64 bit Reals [gt3l_freeboard_beam_segment_delta_time = 0..48] units: seconds since 2018-01-01 contentType: referenceInformation long_name: Elapsed GPS seconds standard_name: time description: The center time assigned to this freeboard swath segment (mean of all freeboard times), in elapsed GPS seconds since the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: ATBD section 5 coordinates: latitude longitude origname: delta_time fullnamepath: /gt3l/freeboard_beam_segment/delta_time |
| gt3l_freeboard_beam_segment_ds_si_hist_bins: | Array of 32 bit Integers [gt3l_freeboard_beam_segment_ds_si_hist_bins = 0..160] units: 1 contentType: auxiliaryInformation long_name: Sea Ice Histogram Bins Dimension Scale description: Dimension scale indexing the sea ice histogram bins. The bin heights must be computed from information contained within the same group as the histogram. source: SeaIce ATBD origname: ds_si_hist_bins fullnamepath: /gt3l/freeboard_beam_segment/ds_si_hist_bins |
| gt3l_freeboard_beam_segment_geophysical_delta_time: | Array of 64 bit Reals [gt3l_freeboard_beam_segment_geophysical_delta_time = 0..6448] units: seconds since 2018-01-01 contentType: referenceInformation long_name: Elapsed GPS seconds standard_name: time description: Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived via Time Tagging coordinates: latitude longitude origname: delta_time fullnamepath: /gt3l/freeboard_beam_segment/geophysical/delta_time |
| gt3l_freeboard_beam_segment_height_segments_delta_time: | Array of 64 bit Reals [gt3l_freeboard_beam_segment_height_segments_delta_time = 0..6448] units: seconds since 2018-01-01 contentType: referenceInformation long_name: Elapsed GPS seconds standard_name: time description: Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived via Time Tagging coordinates: latitude longitude origname: delta_time fullnamepath: /gt3l/freeboard_beam_segment/height_segments/delta_time |
| gt3l_leads_delta_time: | Array of 64 bit Reals [gt3l_leads_delta_time = 0..24] units: seconds since 2018-01-01 contentType: physicalMeasurement long_name: Elapsed GPS seconds standard_name: time description: Center time of the lead in seconds since the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived via Time Tagging coordinates: latitude longitude origname: delta_time fullnamepath: /gt3l/leads/delta_time |
| gt3r_freeboard_beam_segment_beam_freeboard_delta_time: | Array of 64 bit Reals [gt3r_freeboard_beam_segment_beam_freeboard_delta_time = 0..6824] units: seconds since 2018-01-01 contentType: physicalMeasurement long_name: Elapsed GPS seconds standard_name: time description: Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived via Time Tagging coordinates: latitude longitude origname: delta_time fullnamepath: /gt3r/freeboard_beam_segment/beam_freeboard/delta_time |
| gt3r_freeboard_beam_segment_delta_time: | Array of 64 bit Reals [gt3r_freeboard_beam_segment_delta_time = 0..48] units: seconds since 2018-01-01 contentType: referenceInformation long_name: Elapsed GPS seconds standard_name: time description: The center time assigned to this freeboard swath segment (mean of all freeboard times), in elapsed GPS seconds since the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: ATBD section 5 coordinates: latitude longitude origname: delta_time fullnamepath: /gt3r/freeboard_beam_segment/delta_time |
| gt3r_freeboard_beam_segment_ds_si_hist_bins: | Array of 32 bit Integers [gt3r_freeboard_beam_segment_ds_si_hist_bins = 0..160] units: 1 contentType: auxiliaryInformation long_name: Sea Ice Histogram Bins Dimension Scale description: Dimension scale indexing the sea ice histogram bins. The bin heights must be computed from information contained within the same group as the histogram. source: SeaIce ATBD origname: ds_si_hist_bins fullnamepath: /gt3r/freeboard_beam_segment/ds_si_hist_bins |
| gt3r_freeboard_beam_segment_geophysical_delta_time: | Array of 64 bit Reals [gt3r_freeboard_beam_segment_geophysical_delta_time = 0..6824] units: seconds since 2018-01-01 contentType: referenceInformation long_name: Elapsed GPS seconds standard_name: time description: Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived via Time Tagging coordinates: latitude longitude origname: delta_time fullnamepath: /gt3r/freeboard_beam_segment/geophysical/delta_time |
| gt3r_freeboard_beam_segment_height_segments_delta_time: | Array of 64 bit Reals [gt3r_freeboard_beam_segment_height_segments_delta_time = 0..6824] units: seconds since 2018-01-01 contentType: referenceInformation long_name: Elapsed GPS seconds standard_name: time description: Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived via Time Tagging coordinates: latitude longitude origname: delta_time fullnamepath: /gt3r/freeboard_beam_segment/height_segments/delta_time |
| gt3r_leads_delta_time: | Array of 64 bit Reals [gt3r_leads_delta_time = 0..42] units: seconds since 2018-01-01 contentType: physicalMeasurement long_name: Elapsed GPS seconds standard_name: time description: Center time of the lead in seconds since the ATLAS SDP GPS Epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: Derived via Time Tagging coordinates: latitude longitude origname: delta_time fullnamepath: /gt3r/leads/delta_time |
| orbit_info_crossing_time: | Array of 64 bit Reals [orbit_info_crossing_time = 0..0] units: seconds since 2018-01-01 contentType: referenceInformation long_name: Ascending Node Crossing Time standard_name: time description: The time, in seconds since the ATLAS SDP GPS Epoch, at which the ascending node crosses the equator. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: POD/PPD origname: crossing_time fullnamepath: /orbit_info/crossing_time |
| orbit_info_sc_orient_time: | Array of 64 bit Reals [orbit_info_sc_orient_time = 0..0] units: seconds since 2018-01-01 contentType: referenceInformation long_name: Time of Last Spacecraft Orientation Change standard_name: time description: The time of the last spacecraft orientation change between forward, backward and transitional flight modes, expressed in seconds since the ATLAS SDP GPS Epoch. ICESat-2 is considered to be flying forward when the weak beams are leading the strong beams; and backward when the strong beams are leading the weak beams. ICESat-2 is considered to be in transition while it is maneuvering between the two orientations. Science quality is potentially degraded while in transition mode. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed. source: POD/PPD origname: sc_orient_time fullnamepath: /orbit_info/sc_orient_time |
| FakeDim0: | Array of 32 bit Integers [FakeDim0 = 0..0] units: level |