Attributes { HDF5_GLOBAL { String Conventions "CF-1.6"; String 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)"; String contributor_role "Instrument Engineer, Investigator, Principle Investigator, Data Producer, Data Producer"; String date_type "UTC"; String description "ATL04 contains along-track normalized relative backscatter profiles of the atmosphere. The product includes full 532 nm (14 km) uncalibrated attenuated backscatter profiles at 25 times per second for vertical bins of approximately 30 meters. Calibration co"; String featureType "trajectory"; String geospatial_lat_units "degrees_north"; String geospatial_lon_units "degrees_east"; String granule_type "ATL04"; String identifier_product_doi_authority "http://dx.doi.org"; String level "L2"; String 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."; String naming_authority "http://dx.doi.org"; String short_name "ATL04"; String spatial_coverage_type "Horizontal"; String standard_name_vocabulary "CF-1.6"; String time_type "CCSDS UTC-A"; String title "SET_BY_META"; String date_created "2021-02-08T23:45:25.000000Z"; String hdfversion "HDF5 1.10.3"; String history "2021-02-08T23:45:25.000000Z;aee3d4d0-93a7-3848-9d76-128d1c3b355d;Created by PGE atlas_l2a_atm Version 4.4"; String identifier_file_uuid "aee3d4d0-93a7-3848-9d76-128d1c3b355d"; String identifier_product_format_version "4.4"; Float64 time_coverage_duration 5657.0000000000000; String time_coverage_end "2018-11-17T10:40:21.000000Z"; String time_coverage_start "2018-11-17T09:06:04.000000Z"; Float64 geospatial_lat_min -88.018502933443216; Float64 geospatial_lon_min -179.99022867064610; Float64 geospatial_lat_max 88.043173852536512; Float64 geospatial_lon_max 179.98093336461818; String publisher_name "NSIDC DAAC > NASA National Snow and Ice Data Center Distributed Active Archive Center"; String publisher_email "nsidc@nsidc.org"; String publisher_url "http://nsidc.org/daac/"; String identifier_product_type "ATL04"; String identifier_product_doi "doi:10.5067/ATLAS/ATL04.004"; String institution "National Aeronautics and Space Administration (NASA)"; String creator_name "GSFC I-SIPS > ICESat-2 Science Investigator-led Processing System"; String summary "The purpose of ATL04 is to provide normalized relative backscatter and ancillary meteorological and atmosphere data that will be used by to create the upstream ATL09 product."; String keywords "EARTH SCIENCE > SPECTRAL/ENGINEERING > LIDAR > LIDAR BACKSCATTER > NONE > NONE > NONE"; String keywords_vocabulary "NASA/GCMD Science Keywords"; String 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."; String processing_level "2A"; String references "http://nsidc.org/data/icesat2/data.html"; String project "ICESat-2 > Ice, Cloud, and land Elevation Satellite-2"; String instrument "ATLAS > Advanced Topographic Laser Altimeter System"; String platform "ICESat-2 > Ice, Cloud, and land Elevation Satellite-2"; String source "Spacecraft"; } orbit_info { String Description "Contains orbit information."; String data_rate "Varies. Data are only provided when one of the stored values (besides time) changes."; String fullnamepath "/orbit_info"; } METADATA { String Description "ISO19115 Structured Metadata Represented within HDF5"; String iso_19139_dataset_xml " ATL04_20181117090604_07600101_004_01.h5 NSIDC DAAC > National Snow and Ice Data Center DAAC nsidc@nsidc.org http://nsidc.org/daac/ pointOfContact 2021-02-08T23:45:25.000000Z ISO 19115-2 Geographic information - Metadata - Part 2: Extensions for imagery and gridded data ISO 19115-2:2009-02-15 ATL04_20181117090604_07600101_004_01.h5 2021-02-08T23:45:25.000000Z creation ATL04 The ECS Short Name 004 The ECS Version ID ATL04_20181117090604_07600101_004_01.h5 ProducerGranuleId The ICESat-2 ATL04 standard data product contains along-track atmosphere backscatter data at full instrument resolution. The product includes full 532 nm (14 km) uncalibrated attenuated backscatter profiles at 25 times per second for vertical bins of approximately 30 meters. Also includes calibration coefficient values derived from data within the polar regions. onGoing ATL04 004 largerWorkCitation eng geoscientificInformation AscendingCrossing: 72.803982062359367 StartLatitude: 0.0000000000000000 StartDirection:A EndLatitude: 0.0000000000000000 EndDirection: A gov.nasa.esdis.umm.orbitparameters OrbitParameters OrbitNumber: 961 EquatorCrossingLongitude: 72.803982062359367 EquatorCrossingDateTime: 2018-11-17T09:06:03.960907Z gov.nasa.esdis.umm.orbitcalculatedspatialdomains OrbitCalculatedSpatialDomains 2018-11-17T09:06:04.298048Z 2018-11-17T10:40:21.680479Z dataset 2021-02-08T23:45:25.000000Z;aee3d4d0-93a7-3848-9d76-128d1c3b355d;Created by PGE atlas_l2a_atm Version 4.4 2021-02-08T23:45:25.000000Z "; String iso_19139_series_xml " ATL04.004 eng utf8 series NSIDC DAAC > NASA National Snow and Ice Data Center Distributed Active Archive Center 303-492-6199 303-492-2468 1540 30th St Campus Box 449 Boulder Colorado 80309-0449 USA nsidc@nsidc.org http://nsidc.org/daac/ 9:00 A.M. to 5:00 P.M., U.S. Mountain Time, Monday through Friday, excluding U.S. holidays. Contact by e-mail first pointOfContact 2015-10-15 ISO 19115-2 Geographic information - Metadata - Part 2: Extensions for imagery and gridded data ISO 19115-2:2009(E) ATLAS/ICESat-2 L2A Normalized Relative Backscatter Profiles 2016-06-09 revision 004 ATL04 The ECS Short Name 004 The ECS Version ID doi:10.5067/ATLAS/ATL04.004 gov.nasa.esdis A Digital Object Identifier (DOI) National Aeronautics and Space Administration (NASA) resourceProvider GSFC I-SIPS > ICESat-2 Science Investigator-led Processing System originator Initial version of the processing software ATL04 contains along-track atmosphere backscatter data at full instrument resolution. The product includes full 532 nm (14 km) uncalibrated attenuated backscatter profiles at 25 times per second for vertical bins of approximately 30 meters. Includes calibration coefficient values derived from data within the polar regions. The purpose of ATL04 is to provide normalized relative backscatter and ancillary meteorological and atmosphere data that will be used by to create the upstream ATL09 product. The software that generates the ATL04 product was designed and implemented within the ICESat-2 Science Investigator-led Processing System at the NASA Goddard Space Flight Center in Greenbelt, Maryland. onGoing NSIDC DAAC > NASA National Snow and Ice Data Center Distributed Active Archive Center distributor HDF 5 EARTH SCIENCE > SPECTRAL/ENGINEERING > LIDAR > LIDAR BACKSCATTER > NONE > NONE > NONE theme NASA/GCMD Science Keywords NASA Global Change Master Directory (GCMD) User Support Office NASA Global Change Master Directory, Goddard Space Flight Center Greenbelt MD 20771 USA gcmduso@gcmd.gsfc.nasa.gov http://gcmd.nasa.gov/ http web browser NASA Global Change Master Directory (GCMD) Home Page information http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso custodian Global Change Master Directory (GCMD) NASA Global Change Master Directory, Goddard Space Flight Center Greenbelt MD 20771 USA gcmduso@gcmd.gsfc.nasa.gov http://gcmd.nasa.gov/Resources/valids/ http web browser NASA Global Change Master Directory (GCMD) Keyword Page This page describes the NASA GCMD Keywords, how to reference those keywords and provides download instructions. download http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso custodian GEOGRAPHIC REGION > GLOBAL place NASA/GCMD Location Keywords NASA/NSIDC_DAAC > NASA National Snow and Ice Data Center Distributed Active Archive Center dataCenter NASA/GCMD Data Center Keywords Earth Observation Satellites > NASA Decadal Survey > ICESAT-2 > Ice, Cloud, and land Elevation Satellite-2 platform NASA/GCMD Platform Keywords Earth Remote Sensing Instruments > Active Remote Sensing > Altimeters > Lidar/Laser Altimeters > ATLAS > Advanced Topographic Laser Altimeter System instrument NASA/GCMD Instrument Keywords 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. eng geoscientificInformation SpatialCoverageType=HORIZONTAL, SpatialGranuleSpatialRepresentation=ORBIT, TemporalRangeType=Continuous Range, TimeType=UTC -180.0 180.0 -90.0 90.0 SwathWidth: 36.0 Period: 96.8 InclinationAngle: 92.0 NumberOfOrbits: 1.0 StartCircularLatitude: 0.0 gov.nasa.esdis.umm.orbitparameters OrbitParameters 2005-01-01T00:00:00Z 2020-12-31T23:59:59Z 2A 2A HDF 5 NSIDC DAAC > NASA National Snow and Ice Data Center Distributed Active Archive Center distributor http://nsidc.org/data/icesat2/data.html http Data Product Description Page information http://nsidc.org/data/icesat2/order.html http Data Product Order Page order https://doi.org/10.5067/ATLAS/ATL04.004 http Digital Object Identifier URL information ATLAS > Advanced Topographic Laser Altimeter System ATLAS Advanced Topographic Laser Altimeter System Laser Altimeter ATLAS on ICESat-2 determines the range between the satellite and the Earth's surface by measuring the two-way time delay of short pulses of laser light that it transmits in six beams. It is different from previous operational ice-sheet altimeters in that it is a photon-counting LIDAR. ATLAS records a set of arrival times for individual photons, which are then analyzed to derive surface, vegetation, and cloud properties. ATLAS has six beams arranged in three pairs, so that it samples each of three reference pair tracks with a pair of beams; ATLAS transmits pulses at 10 kHz, giving approximately one pulse every 0.7 m along track; ATLAS's expected pointing control will be better than 90 m RMS. ICESat-2 > Ice, Cloud, and land Elevation Satellite-2 ICESat-2 > Ice, Cloud, and land Elevation Satellite-2 ICESat-2 Ice, Cloud, and land Elevation Satellite-2 underDevelopment ICESat-2 > Ice, Cloud, and land Elevation Satellite-2 ICESat-2 Ice, Cloud, and land Elevation Satellite-2 Spacecraft "; String fullnamepath "/METADATA"; } METADATA_AcquisitionInformation { } METADATA_AcquisitionInformation_lidar { String pulse_rate "10000 pps"; String wavelength "532 nm"; String identifier "ATLAS"; String type "Laser Altimeter"; String description "ATLAS on ICESat-2 determines the range between the satellite and the Earth's surface by measuring the two-way time delay of short pulses of laser light that it transmits in six beams. It is different from previous operational ice-sheet altimeters in that it is a photon-counting LIDAR. ATLAS records a set of arrival times for individual photons, which are then analyzed to derive surface, vegetation, and cloud properties. ATLAS has six beams arranged in three pairs, so that it samples each of three reference pair tracks with a pair of beams; ATLAS transmits pulses at 10 kHz, giving approximately one pulse every 0.7 m along track; ATLAS's expected pointing control will be better than 90 m RMS."; String fullnamepath "/METADATA/AcquisitionInformation/lidar"; } METADATA_AcquisitionInformation_lidarDocument { String edition "Pre-Release"; String publicationDate "12/31/17"; String title "A document describing the ATLAS instrument will be provided by the ICESat-2 Project Science Office."; String fullnamepath "/METADATA/AcquisitionInformation/lidarDocument"; } METADATA_AcquisitionInformation_platform { String identifier "ICESat-2"; String description "Ice, Cloud, and land Elevation Satellite-2"; String type "Spacecraft"; String fullnamepath "/METADATA/AcquisitionInformation/platform"; } METADATA_AcquisitionInformation_platformDocument { String edition "31-Dec-16"; String publicationDate "31-Dec-16"; String title "The Ice, Cloud, and land Elevation Satellite-2 (ICESat-2): Science requirements, concept, and implementation. Thorsten Markus, Tom Neumann, Anthony Martino, Waleed Abdalati, Kelly Brunt, Beata Csatho, Sinead Farrell, Helen Fricker, Alex Gardner, David Harding, Michael Jasinski, Ron Kwok, Lori Magruder, Dan Lubin, Scott Luthcke, James Morison, Ross Nelson, Amy Neuenschwander, Stephen Palm, Sorin Popescu, CK Shum, Bob E. Schutz, Benjamin Smith, Yuekui Yang, Jay Zwally. http://dx.doi.org/10.1016/j.rse.2016.12.029"; String fullnamepath "/METADATA/AcquisitionInformation/platformDocument"; } METADATA_DataQuality { String scope "NOT_SET"; String fullnamepath "/METADATA/DataQuality"; } METADATA_DataQuality_CompletenessOmission { String evaluationMethodType "directInternal"; String measureDescription "TBD"; String nameOfMeasure "TBD"; String unitofMeasure "TBD"; String value "NOT_SET"; String fullnamepath "/METADATA/DataQuality/CompletenessOmission"; } METADATA_DataQuality_DomainConsistency { String evaluationMethodType "directInternal"; String measureDescription "TBD"; String nameOfMeasure "TBD"; String unitofMeasure "TBD"; String value "NOT_SET"; String fullnamepath "/METADATA/DataQuality/DomainConsistency"; } METADATA_ProductSpecificationDocument { String ShortName "ATL04_SDP"; String characterSet "utf8"; String edition "v4.3"; String language "eng"; String publicationDate "Feb 2020"; String title "ICESat-2-SIPS-SPEC-4259 - ATLAS Science Algorithm Standard Data Product (SDP) Volume 4 (ATL04)"; String fullnamepath "/METADATA/ProductSpecificationDocument"; } METADATA_SeriesIdentification { String maintenanceAndUpdateFrequency "asNeeded"; String maintenanceDate "SET_BY_META"; String VersionID "004"; String language "eng"; String characterSet "utf8"; String pointOfContact "NSIDC DAAC > NASA National Snow and Ice Data Center Distributed Active Archive Center"; String longName "ATLAS/ICESat-2 L2A Normalized Relative Backscatter Profiles"; String shortName "ATL04"; String identifier_product_DOI "doi:10.5067/ATLAS/ATL04.004"; String revisionDate "2016-06-09"; String resourceProviderOrganizationName "National Aeronautics and Space Administration (NASA)"; String abstract "ATL04 contains along-track atmosphere backscatter data at full instrument resolution. The product includes full 532 nm (14 km) uncalibrated attenuated backscatter profiles at 25 times per second for vertical bins of approximately 30 meters. Includes calibration coefficient values derived from data within the polar regions."; String purpose "The purpose of ATL04 is to provide normalized relative backscatter and ancillary meteorological and atmosphere data that will be used by to create the upstream ATL09 product."; String credit "The software that generates the ATL04 product was designed and implemented within the ICESat-2 Science Investigator-led Processing System at the NASA Goddard Space Flight Center in Greenbelt, Maryland."; String status "onGoing"; String format "HDF"; String formatVersion "5"; String topicCategory "geoscientificInformation"; String mission "ICESat-2 > Ice, Cloud, and land Elevation Satellite-2"; String fullnamepath "/METADATA/SeriesIdentification"; } METADATA_DatasetIdentification { String spatialRepresentationType "along-track"; String creationDate "2021-02-08T23:45:25.000000Z"; String uuid "aee3d4d0-93a7-3848-9d76-128d1c3b355d"; String fileName "ATL04_20181117090604_07600101_004_01.h5"; String VersionID "004"; String language "eng"; String characterSet "utf8"; String shortName "ATL04"; String originatorOrganizationName "GSFC I-SIPS > ICESat-2 Science Investigator-led Processing System"; String abstract "ATL04 contains along-track atmosphere backscatter data at full instrument resolution. The product includes full 532 nm (14 km) uncalibrated attenuated backscatter profiles at 25 times per second for vertical bins of approximately 30 meters. Includes calibration coefficient values derived from data within the polar regions."; String purpose "The purpose of ATL04 is to provide normalized relative backscatter and ancillary meteorological and atmosphere data that will be used by to create the upstream ATL09 product."; String credit "The software that generates the ATL04 product was designed and implemented within the ICESat-2 Science Investigator-led Processing System at the NASA Goddard Space Flight Center in Greenbelt, Maryland."; String status "onGoing"; String topicCategory "geoscientificInformation"; String fullnamepath "/METADATA/DatasetIdentification"; } METADATA_Extent { Float64 northBoundLatitude 88.043173852536512; Float64 eastBoundLongitude 179.98093336461818; Float64 southBoundLatitude -88.018502933443216; Float64 westBoundLongitude -179.99022867064610; String rangeBeginningDateTime "2018-11-17T09:06:04.298048Z"; String rangeEndingDateTime "2018-11-17T10:40:21.680479Z"; String fullnamepath "/METADATA/Extent"; } METADATA_QADatasetIdentification { String abstract "An ASCII product that contains statistical information on data product results. These statistics enable data producers and users to assess the quality of the data in the data product granule"; String creationDate "2021-02-08T23:51:24.000000Z"; String fileName "ATL04_20181117090604_07600101_004_01.qa"; String fullnamepath "/METADATA/QADatasetIdentification"; } METADATA_Lineage { } METADATA_Lineage_ANC25_04 { String description "HDF5 template file that defines the organization and default content of the product."; String fileName "atl04_template.h5"; String shortName "ANC25-04"; String uuid "45de98ed-4737-3211-8660-c3f861877586"; String version "044"; String fullnamepath "/METADATA/Lineage/ANC25-04"; } METADATA_Lineage_Control { String description "Text-based keyword=value file generated automatically within the ICESat-2 data system that specifies all of the conditions required for each individual run of the software."; String fileName "CTL_atlas_l2a_atm_005915621.ctl"; String shortName "CNTL"; String version "1"; String fullnamepath "/METADATA/Lineage/Control"; } METADATA_Lineage_ANC28 { String description "DTU Mean Sea Surface re-referenced to the WGS84 ellipsoid."; String fileName "dtu13_20180705_001_01.nc"; String shortName "ANC28"; String uuid "56f47040-a72e-3109-99c2-bc1658e6dda4"; String version "20180705"; String fullnamepath "/METADATA/Lineage/ANC28"; } METADATA_Lineage_ANC38_04 { String description "ISO 19139 XML file containing DataSet-level metadata information."; String fileName "ANC38-04_20210107160644_004_01.xml"; String shortName "ANC38-04"; String uuid "c95563fd-45c6-374d-9642-c9d4ee287ed0"; String version "004"; String fullnamepath "/METADATA/Lineage/ANC38-04"; } METADATA_Lineage_ANC06_02 { String description "ArcticDEM 32m Digital Elevation Model reformatted into HDF5."; String fileName "arcticdem32m_20190611_001_01.h5"; String shortName "ANC06-02"; String uuid "ce07ef72-0bf4-353b-8475-fb568b029905"; String version "20190611"; String fullnamepath "/METADATA/Lineage/ANC06-02"; } METADATA_Lineage_ANC06_03 { String description "REMA Antarctica 100m Digital Elevation Model filled and reformatted into HDF5"; String fileName "atl06rema100m_20190628_001_01.h5"; String shortName "ANC06-03"; String uuid "3e0a81bd-bbd5-35fa-b868-3254f9355b7f"; String version "20190628"; String fullnamepath "/METADATA/Lineage/ANC06-03"; } METADATA_Lineage_ANC09 { String description "IGBP surface type file"; String fileName "gigbp2_0ll.img"; String shortName "ANC09"; String uuid "fa44fd2d-9532-3308-8559-e4a547173022"; String version "001"; String fullnamepath "/METADATA/Lineage/ANC09"; } METADATA_Lineage_ANC36_04 { String description "ISO 19139 XML file containing Series-level metadata information."; String fileName "ANC36-04_20210107160638_004_01.xml"; String shortName "ANC36-04"; String uuid "0be6a522-e639-3304-b051-8a778d491bd4"; String version "004"; String fullnamepath "/METADATA/Lineage/ANC36-04"; } METADATA_Lineage_ANC39 { String description "Intermediate ancillary file produced by the ICESat-2 atlas_l2a_alt PGE as an input to the atlas_l2a_atm PGE."; String fileName "ANC39_20181117090604_07600101_004_01.h5\000", "ANC39_20181117091306_07600102_004_01.h5\000", "ANC39_20181117092136_07600103_004_01.h5\000", "ANC39_20181117092701_07600104_004_01.h5\000", "ANC39_20181117093210_07600105_004_01.h5\000", "ANC39_20181117093735_07600106_004_01.h5\000", "ANC39_20181117094606_07600107_004_01.h5\000", "ANC39_20181117095308_07600108_004_01.h5\000", "ANC39_20181117100010_07600109_004_01.h5\000", "ANC39_20181117100612_07600110_004_01.h5\000", "ANC39_20181117101353_07600111_004_01.h5\000", "ANC39_20181117101936_07600112_004_01.h5\000", "ANC39_20181117102717_07600113_004_01.h5\000", "ANC39_20181117103319_07600114_004_01.h5\000"; 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Int32 end_cycle 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1; Int32 start_orbit 961, 961, 961, 961, 961, 961, 961, 961, 961, 961, 961, 961, 961, 961; Int32 end_orbit 961, 961, 961, 961, 961, 961, 961, 961, 961, 961, 961, 961, 961, 961; Int32 start_rgt 760, 760, 760, 760, 760, 760, 760, 760, 760, 760, 760, 760, 760, 760; Int32 end_rgt 760, 760, 760, 760, 760, 760, 760, 760, 760, 760, 760, 760, 760, 760; Int32 start_region 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14; Int32 end_region 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14; Int32 start_geoseg 1, 149703, 330725, 446055, 555748, 671080, 852106, 1001812, 1151708, 1280111, 1443603, 1565356, 1728845, 1857242; Int32 end_geoseg 149702, 330724, 446054, 555747, 671079, 852105, 1001811, 1151707, 1280110, 1443602, 1565355, 1728844, 1857241, 2007131; String fullnamepath "/METADATA/Lineage/ANC39"; } METADATA_Lineage_ANC26_04 { String description "HDF5 template file that defines the organization and default content of the product metadata."; String fileName "atl04_metadata_template.h5"; String shortName "ANC26-04"; String uuid "686d2351-99c6-3089-ac97-0da45b2cacf7"; String version "044"; String fullnamepath "/METADATA/Lineage/ANC26-04"; } METADATA_Lineage_ANC06_01 { String description "MERIT 3 arcsec Digital Elevation Model reformatted into HDF5 and re-referenced to the WGS-84 ellipsoid."; String fileName "merit_3as_20200617_001_01.h5"; String shortName "ANC06-01"; String uuid "3db8ab65-d2ac-37c7-86db-17c762268673"; String version "20200617"; String fullnamepath "/METADATA/Lineage/ANC06-01"; } METADATA_Lineage_ANC19 { String description "TAI to UTC leapsecond file retrieved from ftp://maia.usno.navy.mil/ser7/tai-utc.dat"; String fileName "tai_utc_2017.dat"; String shortName "ANC19"; String uuid "7c66d365-278a-31f7-8fe4-9c80e2f012e5"; String version "001"; String fullnamepath "/METADATA/Lineage/ANC19"; } METADATA_Lineage_ANC10 { String description "GEOS5 FPIT 2D"; String fileName "GEOS.fpit.asm.tavg1_2d_slv_Nx.GEOS5124.20181117_0830.V01.nc4\000", "GEOS.fpit.asm.tavg1_2d_slv_Nx.GEOS5124.20181117_0930.V01.nc4\000", "GEOS.fpit.asm.tavg1_2d_slv_Nx.GEOS5124.20181117_1030.V01.nc4\000", "GEOS.fpit.asm.tavg1_2d_slv_Nx.GEOS5124.20181117_1130.V01.nc4\000"; String shortName "ANC10\000", "ANC10\000", "ANC10\000", "ANC10\000"; String uuid "2b14ff89-860b-3e88-84ec-2508cc16f22f\000", "33e76976-9d41-3668-89a7-71d5015a589e\000", "718f8d25-6cd9-3609-8de8-d06c0c9aa92e\000", "9de4f8a4-9010-3240-86c9-0887732761e4\000"; String version "001\000", "001\000", "001\000", "001\000"; String fullnamepath "/METADATA/Lineage/ANC10"; } METADATA_ProcessStep { } METADATA_ProcessStep_Browse { String processDescription "Browse processing is performed for each granule SIPS produces. The browse utility reads data from the granule and produces browse images as defined in the respective product ATBD. The utility then embeds each browse image into the product within the /Browse group."; String identifier "atlas_brw"; String softwareVersion "Version 2.4.1"; String softwareDate "Jan 14 2021"; String softwareTitle "Creates ATLAS HDF5 browse files"; String runTimeParameters "CTL_atlas_l2a_atm_005915621.ctl"; String stepDateTime "2021-02-08T23:51:38.000000Z"; String fullnamepath "/METADATA/ProcessStep/Browse"; } METADATA_ProcessStep_Metadata { String processDescription "Metadata information is processed by the metadata utility for each granule produced by SIPS. During PGE processing, dynamic metadata are written to the product. Additional static information is provided with the metadata template. The metadata utility reads ISO Dataset and Series metadata files and updates the product with static information from within those files. The utility then merges the static and dynamic metadata to creates output ISO19139 Dataset and Series XML files. Finally the utility reads the ISO19139 Dataset and Series XML files into memory and stores the textual representations as attributes attached to the /METADATA group."; String identifier "atlas_meta"; String softwareVersion "Version 4.4.1"; String softwareDate "Jan 14 2021"; String softwareTitle "Creates ATLAS XML metadata files"; String runTimeParameters "CTL_atlas_l2a_atm_005915621.ctl"; String stepDateTime "2021-02-08T23:52:01.000000Z"; String fullnamepath "/METADATA/ProcessStep/Metadata"; } METADATA_ProcessStep_PGE { String ATBDDate "08/22/2019"; String ATBDTitle "ICESat-2 Algorithm Theoretical Basis Document for the Atmosphere, Part I: Level 2 and 3 Data Products"; String ATBDVersion "Version 8.2"; String documentDate "Feb 2020"; String documentation "ATLAS Science Algorithm Software Design Description (SDD) - Volume 8 (atlas_l2a_atm)"; String processDescription "Computes Uncalibrated Backscatter Profiles determined by ATBD Algorithm."; String identifier "atlas_l2a_atm"; String softwareVersion "Version 4.4"; String softwareDate "Oct 29 2020"; String softwareTitle "ASAS L2A ATM PGE"; String runTimeParameters "CTL_atlas_l2a_atm_005915621.ctl"; String stepDateTime "2021-02-08T23:45:25.000000Z"; String fullnamepath "/METADATA/ProcessStep/PGE"; } METADATA_ProcessStep_QA { String processDescription "QA processing is performed by an external utility on each granule produced by SIPS. The utility reads the granule, performs both generic and product-specific quality-assessment calculations, and writes a text-based quality assessment report. The name and creation data of this report are identified within the QADatasetIdentification metadata"; String identifier "atl04_qa_util"; String softwareVersion "Version 4.4"; String softwareDate "Oct 29 2020"; String softwareTitle "ATL04 QA Utility"; String runTimeParameters "CTL_atlas_l2a_atm_005915621.ctl"; String stepDateTime "2021-02-08T23:51:24.000000Z"; String fullnamepath "/METADATA/ProcessStep/QA"; } profile_1 { String Description "Each group contains the segments for the strong beam of one Pair Track. As ICESat-2 orbits the earth, sequential transmit pulses illuminate six ground tracks on the surface of the earth. The track width is approximately 14m. The Atmosphere profiles are only reported for the strong beam. Profiles are numbered from the left to the right in the direction of spacecraft travel as: 1 for the left-most pair of beams; 2 for the center pair of beams; and 3 for the right-most pair of beams."; String data_rate "Data in this group is stored at a 25hz (25 per second) rate."; String atlas_pce "pce3"; String atlas_beam_type "strong"; String groundtrack_id "gt1r"; String atmosphere_profile "profile_1"; String atlas_spot_number "5"; String sc_orientation "Forward"; String fullnamepath "/profile_1"; } profile_1_bckgrd_atlas { String Description "Contains the ATLAS 50-shot background data and derivations."; String fullnamepath "/profile_1/bckgrd_atlas"; } profile_1_calibration { String Description "Contains calibration data associated with a PCE strong beam."; String data_rate "Data within this group stored at a low rate corresponding to the number of times ATLAS passes with the calibration boundary conditions (lat > 60 and solar_angle > 90)/"; String fullnamepath "/profile_1/calibration"; } profile_3 { String Description "Each group contains the segments for the strong beam of one Pair Track. As ICESat-2 orbits the earth, sequential transmit pulses illuminate six ground tracks on the surface of the earth. The track width is approximately 14m. The Atmosphere profiles are only reported for the strong beam. Profiles are numbered from the left to the right in the direction of spacecraft travel as: 1 for the left-most pair of beams; 2 for the center pair of beams; and 3 for the right-most pair of beams."; String data_rate "Data in this group is stored at a 25hz (25 per second) rate."; String atlas_pce "pce1"; String atlas_beam_type "strong"; String groundtrack_id "gt3r"; String atmosphere_profile "profile_3"; String atlas_spot_number "1"; String sc_orientation "Forward"; String fullnamepath "/profile_3"; } profile_3_bckgrd_atlas { String Description "Contains the ATLAS 50-shot background data and derivations."; String fullnamepath "/profile_3/bckgrd_atlas"; } profile_3_calibration { String Description "Contains calibration data associated with a PCE strong beam."; String data_rate "Data within this group stored at a low rate corresponding to the number of times ATLAS passes with the calibration boundary conditions (lat > 60 and solar_angle > 90)/"; String fullnamepath "/profile_3/calibration"; } quality_assessment { String Description "Contains quality assessment data. This may include QA counters, QA along-track data and/or QA summary data."; String fullnamepath "/quality_assessment"; } quality_assessment_profile_1 { String Description "Contains quality assessment data for each profile"; String fullnamepath "/quality_assessment/profile_1"; } quality_assessment_profile_2 { String Description "Contains quality assessment data for each profile"; String fullnamepath "/quality_assessment/profile_2"; } quality_assessment_profile_3 { String Description "Contains quality assessment data for each profile"; String fullnamepath "/quality_assessment/profile_3"; } meteorology_molec_bkscat { String Description "Contains sampled GEOS5_FPIT meteorological model data and molecular backscatter. This data is created from the time/locations of the center profile."; String data_rate "Data in this group is stored at a 1hz (1 per second) rate."; String fullnamepath "/meteorology_molec_bkscat"; } profile_2 { String Description "Each group contains the segments for the strong beam of one Pair Track. As ICESat-2 orbits the earth, sequential transmit pulses illuminate six ground tracks on the surface of the earth. The track width is approximately 14m. The Atmosphere profiles are only reported for the strong beam. Profiles are numbered from the left to the right in the direction of spacecraft travel as: 1 for the left-most pair of beams; 2 for the center pair of beams; and 3 for the right-most pair of beams."; String data_rate "Data in this group is stored at a 25hz (25 per second) rate."; String atlas_pce "pce2"; String atlas_beam_type "strong"; String groundtrack_id "gt2r"; String atmosphere_profile "profile_2"; String atlas_spot_number "3"; String sc_orientation "Forward"; String fullnamepath "/profile_2"; } profile_2_bckgrd_atlas { String Description "Contains the ATLAS 50-shot background data and derivations."; String fullnamepath "/profile_2/bckgrd_atlas"; } profile_2_calibration { String Description "Contains calibration data associated with a PCE strong beam."; String data_rate "Data within this group stored at a low rate corresponding to the number of times ATLAS passes with the calibration boundary conditions (lat > 60 and solar_angle > 90)/"; String fullnamepath "/profile_2/calibration"; } ancillary_data { String Description "Contains information ancillary to the data product. This may include product characteristics, instrument characteristics and/or processing constants."; String data_rate "Data within this group pertain to the granule in its entirety."; String fullnamepath "/ancillary_data"; } ancillary_data_atmosphere { String Description "Contains general ancillary parameters."; String data_rate "Data within this group pertain to the granule in its entirety."; String fullnamepath "/ancillary_data/atmosphere"; } orbit_info_cycle_number { String contentType "referenceInformation"; String description "A count of the number of exact repeats of this reference orbit."; String long_name "Cycle Number"; String source "Operations"; String units "1"; Int16 valid_max 50; Int16 valid_min 0; String origname "cycle_number"; String fullnamepath "/orbit_info/cycle_number"; String coordinates "orbit_info_crossing_time"; } orbit_info_orbit_number { String contentType "referenceInformation"; String description "Unique identifying number for each planned ICESat-2 orbit."; String long_name "Orbit Number"; String source "Operations"; String units "1"; UInt16 valid_max 65000; UInt16 valid_min 1; String origname "orbit_number"; String fullnamepath "/orbit_info/orbit_number"; String coordinates "orbit_info_crossing_time"; } orbit_info_rgt { String contentType "referenceInformation"; String 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."; String long_name "Reference Ground track"; String source "POD/PPD"; String units "1"; Int16 valid_max 1387; Int16 valid_min 1; String origname "rgt"; String fullnamepath "/orbit_info/rgt"; String coordinates "orbit_info_crossing_time"; } orbit_info_sc_orient { String contentType "referenceInformation"; String 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."; String flag_meanings "backward forward transition"; Int16 flag_values 0, 1, 2; String long_name "Spacecraft Orientation"; String source "POD/PPD"; String units "1"; Int16 valid_max 2; Int16 valid_min 0; String origname "sc_orient"; String fullnamepath "/orbit_info/sc_orient"; String coordinates "orbit_info_sc_orient_time"; } orbit_info_lan { String contentType "referenceInformation"; String description "Longitude at the ascending node crossing."; String long_name "Ascending Node Longitude"; String source "POD/PPD"; String units "degrees_east"; Float64 valid_max 180.00000000000000; Float64 valid_min -180.00000000000000; String origname "lan"; String fullnamepath "/orbit_info/lan"; String coordinates "orbit_info_crossing_time"; } profile_1_sig_count_med { String contentType "referenceInformation"; String description "Count of medium-confidence signal photons"; String long_name "Count of Signal Heights - Medium"; String source "ATL03 ATBD, Section 5"; String units "counts"; String origname "sig_count_med"; String fullnamepath "/profile_1/sig_count_med"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_dem_flag { Int16 _FillValue 127; String contentType "referenceInformation"; String description "Indicates source of the DEM height. Values: 0=None, 1=Arctic, 2=Global, 3=MSS, 4=Antarctic."; String flag_meanings "none arctic global mss antarctic"; Int16 flag_values 0, 1, 2, 3, 4; String long_name "dem source flag"; String source "Atmosphere ATBD"; String units "1"; Int16 valid_max 4; Int16 valid_min 0; String origname "dem_flag"; String fullnamepath "/profile_1/dem_flag"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_bckgrd_atlas_bckgrd_counts_reduced { String contentType "modelResult"; String description "Number of photon counts in the 50-shot sum after subtracting the number of signal photon events, defined as in ATBD Section 5, in that span."; String long_name "ATLAS 50-shot background count - reduced"; String source "ATL03 ATBD Section 7.3"; String units "counts"; String origname "bckgrd_counts_reduced"; String fullnamepath "/profile_1/bckgrd_atlas/bckgrd_counts_reduced"; String coordinates "profile_1_bckgrd_atlas_delta_time"; } profile_1_bckgrd_atlas_bckgrd_hist_top { String contentType "modelResult"; String description "The height of the top of the altimetric histogram, in meters above the WGS-84 ellipsoid, with all geophysical corrections applied. Parameter is ingested at 50-Hz, and values are repeated to form a 200-Hz array."; String long_name "Top of the altimetric range window"; String source "ATL03 ATBD Section 7.3"; String units "meters"; String origname "bckgrd_hist_top"; String fullnamepath "/profile_1/bckgrd_atlas/bckgrd_hist_top"; String coordinates "profile_1_bckgrd_atlas_delta_time"; } profile_1_bckgrd_atlas_bckgrd_int_height { String contentType "modelResult"; String description "The height of the altimetric range window. This is the height over which the 50-shot sum is generated. Parameter is ingested at 50-Hz, and values are repeated to form a 200-Hz array."; String long_name "Altimetric range window width"; String source "ATL03 ATBD Section 7.3"; String units "meters"; String origname "bckgrd_int_height"; String fullnamepath "/profile_1/bckgrd_atlas/bckgrd_int_height"; String coordinates "profile_1_bckgrd_atlas_delta_time"; } profile_1_bckgrd_atlas_bckgrd_int_height_reduced { String contentType "modelResult"; String description "The height of the altimetric range window after subtracting the height span of the signal photon events in the 50-shot span."; String long_name "Altimetric range window height - reduced"; String source "ATL03 ATBD Section 7.3"; String units "meters"; String origname "bckgrd_int_height_reduced"; String fullnamepath "/profile_1/bckgrd_atlas/bckgrd_int_height_reduced"; String coordinates "profile_1_bckgrd_atlas_delta_time"; } profile_1_bckgrd_atlas_bckgrd_counts { String contentType "modelResult"; String description "Onboard 50 shot background (200 Hz) sum of photon events within the altimetric range window."; String long_name "ATLAS 50-shot background count"; String source "ATL03 ATBD Section 7.3"; String units "counts"; String origname "bckgrd_counts"; String fullnamepath "/profile_1/bckgrd_atlas/bckgrd_counts"; String coordinates "profile_1_bckgrd_atlas_delta_time"; } profile_1_bckgrd_atlas_bckgrd_rate { String contentType "modelResult"; String description "The background count rate from the 50-shot altimetric histogram after removing the number of likely signal photons based on Section 5."; String long_name "Background count rate based on the ATLAS 50-shot sum"; String source "ATL03 ATBD Section 7.3"; String units "counts / second"; String origname "bckgrd_rate"; String fullnamepath "/profile_1/bckgrd_atlas/bckgrd_rate"; String coordinates "profile_1_bckgrd_atlas_delta_time"; } profile_1_bckgrd_atlas_pce_mframe_cnt { String contentType "referenceInformation"; String description "Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID"; String long_name "PCE Major frame counter"; String source "ATL02"; String units "counts"; String origname "pce_mframe_cnt"; String fullnamepath "/profile_1/bckgrd_atlas/pce_mframe_cnt"; String coordinates "profile_1_bckgrd_atlas_delta_time"; } profile_1_sig_count_low { String contentType "referenceInformation"; String description "Count of low-confidence signal photons"; String long_name "Count of Signal Heights - Low"; String source "ATL03 ATBD, Section 5"; String units "counts"; String origname "sig_count_low"; String fullnamepath "/profile_1/sig_count_low"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_backg_method1 { String contentType "modelResult"; String description "Background from method 1in photons/bin. (pb1 Defined in Atmosphere ATBD section 2.3.2)"; String long_name "Background method 1"; String source "Atmosphere ATBD section 3.3.4"; String units "counts"; String origname "backg_method1"; String fullnamepath "/profile_1/backg_method1"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_sig_h_sdev_hi { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "SDev of the heights of high-confidence signal photons"; String long_name "SDev of Signal Heights -High"; String source "ATL03 ATBD, Section 5"; String units "meters"; String origname "sig_h_sdev_hi"; String fullnamepath "/profile_1/sig_h_sdev_hi"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_surface_conf { String contentType "modelResult"; String description "The level of confidence in the surface signal magnitude and location for each beam. (1.0 - lowest confidence; 100.0 - highest confidence)."; String long_name "Surface signal confidence"; String source "Atmosphere ATBD section 3.3.5"; String units "1"; String origname "surface_conf"; String fullnamepath "/profile_1/surface_conf"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_dtime_fac1 { Float32 _FillValue 3.402823466e+38; String contentType "modelResult"; String description "Dead time correction factor for surface signal computed from radiometric lookup table."; String long_name "dead_time_factor1"; String source "Atmosphere ATBD"; String units "1"; String origname "dtime_fac1"; String fullnamepath "/profile_1/dtime_fac1"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_atm_tw_top { String contentType "referenceInformation"; String description "The geolocated ellipsoidal height at the top of the Atmospheric range window"; String long_name "Atmospheric Telemetry Window Top"; String source "ATL03g ATBD"; String units "meters"; String origname "atm_tw_top"; String fullnamepath "/profile_1/atm_tw_top"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_sig_h_mean_hi { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Mean height of high-confidence signal photons"; String long_name "Mean of SignalHeights - High"; String source "ATL03 ATBD, Section 5"; String units "meters"; String origname "sig_h_mean_hi"; String fullnamepath "/profile_1/sig_h_mean_hi"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_ret_sensitivity { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Receiver response per joule/return pulse in the field of view, in the absence of any deadtime effects."; String long_name "Return Sensitivity"; String source "ATL02 ATBD, Section 5.5.2"; String units "events/pulse"; String origname "ret_sensitivity"; String fullnamepath "/profile_1/ret_sensitivity"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_beam_azimuth { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Beam azimuth"; String long_name "beam azimuth"; String source "ATL03 ATBD"; String units "degrees_east"; String origname "beam_azimuth"; String fullnamepath "/profile_1/beam_azimuth"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_range_to_top { String contentType "referenceInformation"; String description "Range from the spacecraft to the top of the atmosphere range window."; String long_name "Range"; String source "Atmosphere ATBD"; String units "meters"; String origname "range_to_top"; String fullnamepath "/profile_1/range_to_top"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_surface_thresh { String contentType "modelResult"; String description "Surface signal threshold"; String long_name "Surface signal threshold"; String source "Atmosphere ATBD section 3.3.5"; String units "photons"; String origname "surface_thresh"; String fullnamepath "/profile_1/surface_thresh"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_solar_azimuth { String contentType "referenceInformation"; String description "The direction, eastwards from north, of the sun vector as seen by an observer at the laser ground spot."; String long_name "solar azimuth"; String source "ATL03g ATBD"; String units "degrees_east"; String origname "solar_azimuth"; String fullnamepath "/profile_1/solar_azimuth"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_longitude { String contentType "referenceInformation"; String description "Longitude at the the top of the ATM histogram, WGS84, East=+, derived from the geolocation of the ATM range window."; String long_name "Longitude of the ATM histogram"; String source "ATL03g ATBD"; String standard_name "longitude"; String units "degrees_east"; Float64 valid_max 180.00000000000000; Float64 valid_min -180.00000000000000; String origname "longitude"; String fullnamepath "/profile_1/longitude"; String coordinates "profile_1_delta_time profile_1_latitude"; } profile_1_latitude { String contentType "referenceInformation"; String description "Latitude at the the top of the ATM histogram, WGS84, North=+, Derived from the geolocation of the ATM range window."; String long_name "Latitude of the ATM histogram"; String source "ATL03g ATBD"; String standard_name "latitude"; String units "degrees_north"; Float64 valid_max 90.000000000000000; Float64 valid_min -90.000000000000000; String origname "latitude"; String fullnamepath "/profile_1/latitude"; String coordinates "profile_1_delta_time profile_1_longitude"; } profile_1_surf_type { String contentType "referenceInformation"; String description "Flags describing which surface types this interval is associated with. 0=not type, 1=is type. Order of array is land, ocean, sea ice, land ice, inland water."; String flag_meanings "not_type is_type"; Int16 flag_values 0, 1; String long_name "surface type"; String source "ATL03 ATBD, Section 4"; String units "1"; Int16 valid_max 1; Int16 valid_min 0; String origname "surf_type"; String fullnamepath "/profile_1/surf_type"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_atm_rw_width_m { String contentType "referenceInformation"; String description "The range, in meters, from the Atmospheric range window start to the range window stop."; String long_name "Atmospheric Range Window Width"; String source "ATL02"; String units "seconds"; String origname "atm_rw_width_m"; String fullnamepath "/profile_1/atm_rw_width_m"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_backg_method3 { Float32 _FillValue 3.402823466e+38; String contentType "modelResult"; String description "Background from method 3 in photons/bin. (Defined in Atmosphere ATBD section 3.3.4)"; String long_name "Background method 3"; String source "Atmosphere ATBD section 3.3.4"; String units "counts"; String origname "backg_method3"; String fullnamepath "/profile_1/backg_method3"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_surf_type_igbp { String contentType "referenceInformation"; String description "IGBP Surface Type"; String long_name "IGBP Surface Type"; String source "Atmosphere ATBD, IGBP Surface Type"; String units "1"; String origname "surf_type_igbp"; String fullnamepath "/profile_1/surf_type_igbp"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_sig_h_mean_med { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Mean height of medium-confidence signal photons"; String long_name "Mean of Signa Heightsl - Med"; String source "ATL03 ATBD, Section 5"; String units "meters"; String origname "sig_h_mean_med"; String fullnamepath "/profile_1/sig_h_mean_med"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_dem_h { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Best available DEM (in priority of Arctic/Antarctic/Global/MSS) value at the geolocation point."; String long_name "DEM Height"; String source "Atmosphere ATBD"; String units "meters"; String origname "dem_h"; String fullnamepath "/profile_1/dem_h"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_surface_width { String contentType "modelResult"; String description "The number of bins comprising the surface signal for each beam."; String long_name "Surface signal width"; String source "Atmosphere ATBD section 3.3.5"; String units "bins"; String origname "surface_width"; String fullnamepath "/profile_1/surface_width"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_tx_pulse_energy { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Transmit energy, from the laser internal energy monitor, split into per-beam measurements."; String long_name "Transmit Pulse Energy"; String source "ATL02 ATBD, Section 7.2"; String units "Joules"; String origname "tx_pulse_energy"; String fullnamepath "/profile_1/tx_pulse_energy"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_surface_height { Float32 _FillValue 3.402823466e+38; String contentType "modelResult"; String description "Height of the detected surface bin."; String long_name "Surface height"; String source "Atmosphere ATBD section 3.3.5"; String units "meters"; String origname "surface_height"; String fullnamepath "/profile_1/surface_height"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_bg_sensitivity { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Receiver response per watt of continuous illumination in the passband from a diffuse source larger than the field of view, in the absence of any dead time effects."; String long_name "Background Sensitivity"; String source "ATL02 ATBD, Section 5.5.2"; String units "events/sec"; String origname "bg_sensitivity"; String fullnamepath "/profile_1/bg_sensitivity"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_nrb_profile { Float32 _FillValue 3.402823466e+38; String contentType "modelResult"; String description "Normalize relative backscatter (NRB) profile vertically aligned to 20 to -1 km with vertical resolution of 30 m. (Photons km2/Joule)"; String long_name "NRB Profile"; String source "Atmosphere ATBD section 2.3"; String units "1"; String origname "nrb_profile"; String fullnamepath "/profile_1/nrb_profile"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_backg_mean2 { String contentType "modelResult"; String description "Signal mean from method 2 (pb2 defined in Atmosphere ATBD part 1 section 2.3.4)"; String long_name "Signal mean"; String source "Atmosphere ATBD section 3.3.4"; String units "counts"; String origname "backg_mean2"; String fullnamepath "/profile_1/backg_mean2"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_prof_dist_y { String contentType "referenceInformation"; String description "Across-Track distance from the reference ground track."; String long_name "Across Track Distance from RGT"; String source "ATL03g ATBD, Section 3.4"; String units "meters"; String origname "prof_dist_y"; String fullnamepath "/profile_1/prof_dist_y"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_beam_elevation { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Beam elevation"; String long_name "beam elevation"; String source "ATL03 ATBD"; String units "degrees"; String origname "beam_elevation"; String fullnamepath "/profile_1/beam_elevation"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_calibration_delta_time_end { String contentType "modelResult"; String description "Number of GPS seconds since the ATLAS SDP epoch where the cal interval ended. The corresponding start time of the interval is delta_time. 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."; String long_name "Calibration interval end time"; String source "Atmosphere ATBD"; String standard_name "time"; String units "seconds since 2018-01-01"; String origname "delta_time_end"; String fullnamepath "/profile_1/calibration/delta_time_end"; String coordinates "profile_1_calibration_delta_time profile_1_calibration_latitude profile_1_calibration_longitude"; } profile_1_calibration_cal_ozone_trans { Float32 _FillValue 3.402823466e+38; String contentType "modelResult"; String description "Ozone transmission term used to compute cal_const."; String long_name "Ozone transmission used"; String source "Atmosphere ATBD"; String units "1"; String origname "cal_ozone_trans"; String fullnamepath "/profile_1/calibration/cal_ozone_trans"; String coordinates "profile_1_calibration_delta_time profile_1_calibration_latitude profile_1_calibration_longitude"; } profile_1_calibration_cal_c_trans { Float32 _FillValue 3.402823466e+38; String contentType "modelResult"; String description "The total transmission used to compute cal_const."; String long_name "total transmission used"; String source "Atmosphere ATBD"; String units "1"; String origname "cal_c_trans"; String fullnamepath "/profile_1/calibration/cal_c_trans"; String coordinates "profile_1_calibration_delta_time profile_1_calibration_latitude profile_1_calibration_longitude"; } profile_1_calibration_longitude { String contentType "modelResult"; String description "Start Longitude of calibration interval."; String long_name "Calibration interval start longitude"; String source "Atmosphere ATBD"; String standard_name "longitude"; String units "degrees_east"; Float64 valid_max 180.00000000000000; Float64 valid_min -180.00000000000000; String origname "longitude"; String fullnamepath "/profile_1/calibration/longitude"; String coordinates "profile_1_calibration_delta_time profile_1_calibration_latitude"; } profile_1_calibration_latitude_end { String contentType "modelResult"; String description "Stop Latitude of calibration interval."; String long_name "Calibration interval end latitude"; String source "Atmosphere ATBD"; String units "degrees_north"; Float64 valid_max 90.000000000000000; Float64 valid_min -90.000000000000000; String origname "latitude_end"; String fullnamepath "/profile_1/calibration/latitude_end"; String coordinates "profile_1_calibration_delta_time profile_1_calibration_latitude profile_1_calibration_longitude"; } profile_1_calibration_latitude { String contentType "modelResult"; String description "Start Latitude of calibration interval."; String long_name "Calibration interval start Latitude"; String source "Atmosphere ATBD"; String standard_name "latitude"; String units "degrees_north"; Float64 valid_max 90.000000000000000; Float64 valid_min -90.000000000000000; String origname "latitude"; String fullnamepath "/profile_1/calibration/latitude"; String coordinates "profile_1_calibration_delta_time profile_1_calibration_longitude"; } profile_1_calibration_cal_molec { Float32 _FillValue 3.402823466e+38; String contentType "modelResult"; String description "Molecular Backscatter value used to compute cal_const."; String long_name "Molecular Backscatter used"; String source "Atmosphere ATBD"; String units "m-1 sr-1"; String origname "cal_molec"; String fullnamepath "/profile_1/calibration/cal_molec"; String coordinates "profile_1_calibration_delta_time profile_1_calibration_latitude profile_1_calibration_longitude"; } profile_1_calibration_cal_c { Float32 _FillValue 3.402823466e+38; String contentType "modelResult"; String description "Calculated calibration constant (one per beam, Defined by Atmosphere ATBD eqn 3.27)"; String long_name "Calculated Calibration constant"; String source "Atmosphere ATBD"; String units "Photons*m^3 *sr / J"; String origname "cal_c"; String fullnamepath "/profile_1/calibration/cal_c"; String coordinates "profile_1_calibration_delta_time profile_1_calibration_latitude profile_1_calibration_longitude"; } profile_1_calibration_cal_con { Int32 _FillValue 2147483647; String contentType "modelResult"; String description "Calibration Confidence"; String long_name "Calibration Confidence"; String source "Atmosphere ATBD"; String units "1"; String origname "cal_con"; String fullnamepath "/profile_1/calibration/cal_con"; String coordinates "profile_1_calibration_delta_time profile_1_calibration_latitude profile_1_calibration_longitude"; } profile_1_calibration_cal_nrb { Float32 _FillValue 3.402823466e+38; String contentType "modelResult"; String description "NRB value used to compute cal_const."; String long_name "NRB value used"; String source "Atmosphere ATBD"; String units "1"; String origname "cal_nrb"; String fullnamepath "/profile_1/calibration/cal_nrb"; String coordinates "profile_1_calibration_delta_time profile_1_calibration_latitude profile_1_calibration_longitude"; } profile_1_calibration_longitude_end { String contentType "modelResult"; String description "Stop Longitude of calibration interval."; String long_name "Calibration interval end longitude"; String source "Atmosphere ATBD"; String units "degrees_east"; Float64 valid_max 180.00000000000000; Float64 valid_min -180.00000000000000; String origname "longitude_end"; String fullnamepath "/profile_1/calibration/longitude_end"; String coordinates "profile_1_calibration_delta_time profile_1_calibration_latitude profile_1_calibration_longitude"; } profile_1_segment_id { String contentType "referenceInformation"; String description "A 7 digit number identifiying the along-track geolocation segment number. These are sequential, starting with 1 for the first segment after an ascending equatorial crossing node."; String long_name "along-track segment ID number."; String source "ATL03 ATBD, Section 3.1"; String units "1"; String origname "segment_id"; String fullnamepath "/profile_1/segment_id"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_surface_bin { Int32 _FillValue 2147483647; String contentType "modelResult"; String description "Vertially aligned, NRB bin number of the detected surface return."; String long_name "Surface bin"; String source "Atmosphere ATBD section 3.3.5"; String units "1"; String origname "surface_bin"; String fullnamepath "/profile_1/surface_bin"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_solar_elevation { String contentType "referenceInformation"; String description "Solar Angle above or below the plane tangent to the ellipsoid surface at the laser spot. Positive values mean the sun is above the horizon, while negative values mean it is below the horizon. The effect of atmospheric refraction is not included. This is a low precision value, with approximately TBD degree accuracy."; String long_name "solar elevation"; String source "ATL03g ATBD"; String units "degrees"; String origname "solar_elevation"; String fullnamepath "/profile_1/solar_elevation"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_sig_count_hi { String contentType "referenceInformation"; String description "Count of high-confidence signal photons"; String long_name "Count of Signa Heightsl - High"; String source "ATL03 ATBD, Section 5"; String units "counts"; String origname "sig_count_hi"; String fullnamepath "/profile_1/sig_count_hi"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_dtime_fac2 { Float32 _FillValue 3.402823466e+38; String contentType "modelResult"; String description "Dead time correction factor for surface signal computed from ATBD equation 2.1."; String long_name "dead_time_factor2"; String source "Atmosphere ATBD"; String units "1"; String origname "dtime_fac2"; String fullnamepath "/profile_1/dtime_fac2"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_prof_dist_x { String contentType "referenceInformation"; String description "Along-track distance from the equator crossing."; String long_name "Along Track Distance"; String source "ATL03g ATBD, Section 3.4"; String units "meters"; String origname "prof_dist_x"; String fullnamepath "/profile_1/prof_dist_x"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_backg_std_dev2 { String contentType "modelResult"; String description "Background standard deviation from the selected method used (Sstd2 Defined in Atmosphere ATBD section 2.3.2)"; String long_name "Background standard deviation 2"; String source "Atmosphere ATBD section 3.3.4"; String units "counts"; String origname "backg_std_dev2"; String fullnamepath "/profile_1/backg_std_dev2"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_backg_method2 { String contentType "modelResult"; String description "Background from method 2 in photons/bin. (pb2 Defined in Atmosphere ATBD section 2.3.2)"; String long_name "Background method 2"; String source "Atmosphere ATBD section 3.3.4"; String units "counts"; String origname "backg_method2"; String fullnamepath "/profile_1/backg_method2"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_pce_mframe_cnt { String contentType "referenceInformation"; String description "Major Frame Counter - The major frame counter is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID"; String long_name "PCE Major frame counter"; String source "ATL02"; String units "counts"; String origname "pce_mframe_cnt"; String fullnamepath "/profile_1/pce_mframe_cnt"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_sc_alt { String contentType "physicalMeasurement"; String description "Height of the spacecraft above the WGS84 ellipsoid."; String long_name "Altitude"; String source "ATL03g ATBD, Section 3.4"; String units "meters"; String origname "sc_alt"; String fullnamepath "/profile_1/sc_alt"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_cloud_fold_flag { Int16 _FillValue 127; String contentType "modelResult"; String description "Flag that indicates this profile likely contains cloud signal folded down from above 15 km to the last 2-3 km of the profile. See ATBD Table 3.9 for detailed flag value meanings"; String flag_meanings "no_folding goes5_indicates profile_indicates both_indicate"; Int16 flag_values 0, 1, 2, 3; String long_name "Cloud Folding Flag"; String source "Atmosphere ATBD"; String units "1"; Int16 valid_max 3; Int16 valid_min 0; String origname "cloud_fold_flag"; String fullnamepath "/profile_1/cloud_fold_flag"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_sig_h_sdev_low { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "SDev of the heights of low-confidence signal photons"; String long_name "SDev of Signal Heights -Low"; String source "ATL03 ATBD, Section 5"; String units "meters"; String origname "sig_h_sdev_low"; String fullnamepath "/profile_1/sig_h_sdev_low"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_sig_h_mean_low { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Mean height of low-confidence signal photons"; String long_name "Mean of Signal Heights - Low"; String source "ATL03 ATBD, Section 5"; String units "meters"; String origname "sig_h_mean_low"; String fullnamepath "/profile_1/sig_h_mean_low"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_sig_h_sdev_med { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "SDev of the heights of medium-confidence signal photons"; String long_name "SDev of Signa Heights -Med"; String source "ATL03 ATBD, Section 5"; String units "meters"; String origname "sig_h_sdev_med"; String fullnamepath "/profile_1/sig_h_sdev_med"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_nrb_bot_bin { Int32 _FillValue 2147483647; String contentType "modelResult"; String description "The ending (bottom) bin number within the 20 to -1 km vertically aligned profile where data are valid. Bin number starts at 1."; String long_name "NRB Profile bottom valid bin"; String source "Atmosphere ATBD section 2.3"; String units "1"; String origname "nrb_bot_bin"; String fullnamepath "/profile_1/nrb_bot_bin"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_surface_sig { String contentType "modelResult"; String description "Number of photons in the detected surface bin."; String long_name "Surface signal count"; String source "Atmosphere ATBD section 3.3.5"; String units "counts"; String origname "surface_sig"; String fullnamepath "/profile_1/surface_sig"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_1_nrb_top_bin { Int32 _FillValue 2147483647; String contentType "modelResult"; String description "The starting (top) bin number within the 20 to -1 km vertically aligned profile where data are valid. Bin number starts at 1."; String long_name "NRB Profile top valid bin"; String source "Atmosphere ATBD section 2.3"; String units "counts"; String origname "nrb_top_bin"; String fullnamepath "/profile_1/nrb_top_bin"; String coordinates "profile_1_delta_time profile_1_latitude profile_1_longitude"; } profile_3_sig_count_med { String contentType "referenceInformation"; String description "Count of medium-confidence signal photons"; String long_name "Count of Signal Heights - Medium"; String source "ATL03 ATBD, Section 5"; String units "counts"; String origname "sig_count_med"; String fullnamepath "/profile_3/sig_count_med"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_dem_flag { Int16 _FillValue 127; String contentType "referenceInformation"; String description "Indicates source of the DEM height. Values: 0=None, 1=Arctic, 2=Global, 3=MSS, 4=Antarctic."; String flag_meanings "none arctic global mss antarctic"; Int16 flag_values 0, 1, 2, 3, 4; String long_name "dem source flag"; String source "Atmosphere ATBD"; String units "1"; Int16 valid_max 4; Int16 valid_min 0; String origname "dem_flag"; String fullnamepath "/profile_3/dem_flag"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_bckgrd_atlas_bckgrd_counts_reduced { String contentType "modelResult"; String description "Number of photon counts in the 50-shot sum after subtracting the number of signal photon events, defined as in ATBD Section 5, in that span."; String long_name "ATLAS 50-shot background count - reduced"; String source "ATL03 ATBD Section 7.3"; String units "counts"; String origname "bckgrd_counts_reduced"; String fullnamepath "/profile_3/bckgrd_atlas/bckgrd_counts_reduced"; String coordinates "profile_3_bckgrd_atlas_delta_time"; } profile_3_bckgrd_atlas_bckgrd_hist_top { String contentType "modelResult"; String description "The height of the top of the altimetric histogram, in meters above the WGS-84 ellipsoid, with all geophysical corrections applied. Parameter is ingested at 50-Hz, and values are repeated to form a 200-Hz array."; String long_name "Top of the altimetric range window"; String source "ATL03 ATBD Section 7.3"; String units "meters"; String origname "bckgrd_hist_top"; String fullnamepath "/profile_3/bckgrd_atlas/bckgrd_hist_top"; String coordinates "profile_3_bckgrd_atlas_delta_time"; } profile_3_bckgrd_atlas_bckgrd_int_height { String contentType "modelResult"; String description "The height of the altimetric range window. This is the height over which the 50-shot sum is generated. Parameter is ingested at 50-Hz, and values are repeated to form a 200-Hz array."; String long_name "Altimetric range window width"; String source "ATL03 ATBD Section 7.3"; String units "meters"; String origname "bckgrd_int_height"; String fullnamepath "/profile_3/bckgrd_atlas/bckgrd_int_height"; String coordinates "profile_3_bckgrd_atlas_delta_time"; } profile_3_bckgrd_atlas_bckgrd_int_height_reduced { String contentType "modelResult"; String description "The height of the altimetric range window after subtracting the height span of the signal photon events in the 50-shot span."; String long_name "Altimetric range window height - reduced"; String source "ATL03 ATBD Section 7.3"; String units "meters"; String origname "bckgrd_int_height_reduced"; String fullnamepath "/profile_3/bckgrd_atlas/bckgrd_int_height_reduced"; String coordinates "profile_3_bckgrd_atlas_delta_time"; } profile_3_bckgrd_atlas_bckgrd_counts { String contentType "modelResult"; String description "Onboard 50 shot background (200 Hz) sum of photon events within the altimetric range window."; String long_name "ATLAS 50-shot background count"; String source "ATL03 ATBD Section 7.3"; String units "counts"; String origname "bckgrd_counts"; String fullnamepath "/profile_3/bckgrd_atlas/bckgrd_counts"; String coordinates "profile_3_bckgrd_atlas_delta_time"; } profile_3_bckgrd_atlas_bckgrd_rate { String contentType "modelResult"; String description "The background count rate from the 50-shot altimetric histogram after removing the number of likely signal photons based on Section 5."; String long_name "Background count rate based on the ATLAS 50-shot sum"; String source "ATL03 ATBD Section 7.3"; String units "counts / second"; String origname "bckgrd_rate"; String fullnamepath "/profile_3/bckgrd_atlas/bckgrd_rate"; String coordinates "profile_3_bckgrd_atlas_delta_time"; } profile_3_bckgrd_atlas_pce_mframe_cnt { String contentType "referenceInformation"; String description "Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID"; String long_name "PCE Major frame counter"; String source "ATL02"; String units "counts"; String origname "pce_mframe_cnt"; String fullnamepath "/profile_3/bckgrd_atlas/pce_mframe_cnt"; String coordinates "profile_3_bckgrd_atlas_delta_time"; } profile_3_sig_count_low { String contentType "referenceInformation"; String description "Count of low-confidence signal photons"; String long_name "Count of Signal Heights - Low"; String source "ATL03 ATBD, Section 5"; String units "counts"; String origname "sig_count_low"; String fullnamepath "/profile_3/sig_count_low"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_backg_method1 { String contentType "modelResult"; String description "Background from method 1in photons/bin. (pb1 Defined in Atmosphere ATBD section 2.3.2)"; String long_name "Background method 1"; String source "Atmosphere ATBD section 3.3.4"; String units "counts"; String origname "backg_method1"; String fullnamepath "/profile_3/backg_method1"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_sig_h_sdev_hi { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "SDev of the heights of high-confidence signal photons"; String long_name "SDev of Signal Heights -High"; String source "ATL03 ATBD, Section 5"; String units "meters"; String origname "sig_h_sdev_hi"; String fullnamepath "/profile_3/sig_h_sdev_hi"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_surface_conf { String contentType "modelResult"; String description "The level of confidence in the surface signal magnitude and location for each beam. (1.0 - lowest confidence; 100.0 - highest confidence)."; String long_name "Surface signal confidence"; String source "Atmosphere ATBD section 3.3.5"; String units "1"; String origname "surface_conf"; String fullnamepath "/profile_3/surface_conf"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_dtime_fac1 { Float32 _FillValue 3.402823466e+38; String contentType "modelResult"; String description "Dead time correction factor for surface signal computed from radiometric lookup table."; String long_name "dead_time_factor1"; String source "Atmosphere ATBD"; String units "1"; String origname "dtime_fac1"; String fullnamepath "/profile_3/dtime_fac1"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_atm_tw_top { String contentType "referenceInformation"; String description "The geolocated ellipsoidal height at the top of the Atmospheric range window"; String long_name "Atmospheric Telemetry Window Top"; String source "ATL03g ATBD"; String units "meters"; String origname "atm_tw_top"; String fullnamepath "/profile_3/atm_tw_top"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_sig_h_mean_hi { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Mean height of high-confidence signal photons"; String long_name "Mean of SignalHeights - High"; String source "ATL03 ATBD, Section 5"; String units "meters"; String origname "sig_h_mean_hi"; String fullnamepath "/profile_3/sig_h_mean_hi"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_ret_sensitivity { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Receiver response per joule/return pulse in the field of view, in the absence of any deadtime effects."; String long_name "Return Sensitivity"; String source "ATL02 ATBD, Section 5.5.2"; String units "events/pulse"; String origname "ret_sensitivity"; String fullnamepath "/profile_3/ret_sensitivity"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_beam_azimuth { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Beam azimuth"; String long_name "beam azimuth"; String source "ATL03 ATBD"; String units "degrees_east"; String origname "beam_azimuth"; String fullnamepath "/profile_3/beam_azimuth"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_range_to_top { String contentType "referenceInformation"; String description "Range from the spacecraft to the top of the atmosphere range window."; String long_name "Range"; String source "Atmosphere ATBD"; String units "meters"; String origname "range_to_top"; String fullnamepath "/profile_3/range_to_top"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_surface_thresh { String contentType "modelResult"; String description "Surface signal threshold"; String long_name "Surface signal threshold"; String source "Atmosphere ATBD section 3.3.5"; String units "photons"; String origname "surface_thresh"; String fullnamepath "/profile_3/surface_thresh"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_solar_azimuth { String contentType "referenceInformation"; String description "The direction, eastwards from north, of the sun vector as seen by an observer at the laser ground spot."; String long_name "solar azimuth"; String source "ATL03g ATBD"; String units "degrees_east"; String origname "solar_azimuth"; String fullnamepath "/profile_3/solar_azimuth"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_longitude { String contentType "referenceInformation"; String description "Longitude at the the top of the ATM histogram, WGS84, East=+, derived from the geolocation of the ATM range window."; String long_name "Longitude of the ATM histogram"; String source "ATL03g ATBD"; String standard_name "longitude"; String units "degrees_east"; Float64 valid_max 180.00000000000000; Float64 valid_min -180.00000000000000; String origname "longitude"; String fullnamepath "/profile_3/longitude"; String coordinates "profile_3_delta_time profile_3_latitude"; } profile_3_latitude { String contentType "referenceInformation"; String description "Latitude at the the top of the ATM histogram, WGS84, North=+, Derived from the geolocation of the ATM range window."; String long_name "Latitude of the ATM histogram"; String source "ATL03g ATBD"; String standard_name "latitude"; String units "degrees_north"; Float64 valid_max 90.000000000000000; Float64 valid_min -90.000000000000000; String origname "latitude"; String fullnamepath "/profile_3/latitude"; String coordinates "profile_3_delta_time profile_3_longitude"; } profile_3_surf_type { String contentType "referenceInformation"; String description "Flags describing which surface types this interval is associated with. 0=not type, 1=is type. Order of array is land, ocean, sea ice, land ice, inland water."; String flag_meanings "not_type is_type"; Int16 flag_values 0, 1; String long_name "surface type"; String source "ATL03 ATBD, Section 4"; String units "1"; Int16 valid_max 1; Int16 valid_min 0; String origname "surf_type"; String fullnamepath "/profile_3/surf_type"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_atm_rw_width_m { String contentType "referenceInformation"; String description "The range, in meters, from the Atmospheric range window start to the range window stop."; String long_name "Atmospheric Range Window Width"; String source "ATL02"; String units "seconds"; String origname "atm_rw_width_m"; String fullnamepath "/profile_3/atm_rw_width_m"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_backg_method3 { Float32 _FillValue 3.402823466e+38; String contentType "modelResult"; String description "Background from method 3 in photons/bin. (Defined in Atmosphere ATBD section 3.3.4)"; String long_name "Background method 3"; String source "Atmosphere ATBD section 3.3.4"; String units "counts"; String origname "backg_method3"; String fullnamepath "/profile_3/backg_method3"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_surf_type_igbp { String contentType "referenceInformation"; String description "IGBP Surface Type"; String long_name "IGBP Surface Type"; String source "Atmosphere ATBD, IGBP Surface Type"; String units "1"; String origname "surf_type_igbp"; String fullnamepath "/profile_3/surf_type_igbp"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_sig_h_mean_med { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Mean height of medium-confidence signal photons"; String long_name "Mean of Signa Heightsl - Med"; String source "ATL03 ATBD, Section 5"; String units "meters"; String origname "sig_h_mean_med"; String fullnamepath "/profile_3/sig_h_mean_med"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_dem_h { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Best available DEM (in priority of Arctic/Antarctic/Global/MSS) value at the geolocation point."; String long_name "DEM Height"; String source "Atmosphere ATBD"; String units "meters"; String origname "dem_h"; String fullnamepath "/profile_3/dem_h"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_surface_width { String contentType "modelResult"; String description "The number of bins comprising the surface signal for each beam."; String long_name "Surface signal width"; String source "Atmosphere ATBD section 3.3.5"; String units "bins"; String origname "surface_width"; String fullnamepath "/profile_3/surface_width"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_tx_pulse_energy { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Transmit energy, from the laser internal energy monitor, split into per-beam measurements."; String long_name "Transmit Pulse Energy"; String source "ATL02 ATBD, Section 7.2"; String units "Joules"; String origname "tx_pulse_energy"; String fullnamepath "/profile_3/tx_pulse_energy"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_surface_height { Float32 _FillValue 3.402823466e+38; String contentType "modelResult"; String description "Height of the detected surface bin."; String long_name "Surface height"; String source "Atmosphere ATBD section 3.3.5"; String units "meters"; String origname "surface_height"; String fullnamepath "/profile_3/surface_height"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_bg_sensitivity { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Receiver response per watt of continuous illumination in the passband from a diffuse source larger than the field of view, in the absence of any dead time effects."; String long_name "Background Sensitivity"; String source "ATL02 ATBD, Section 5.5.2"; String units "events/sec"; String origname "bg_sensitivity"; String fullnamepath "/profile_3/bg_sensitivity"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_nrb_profile { Float32 _FillValue 3.402823466e+38; String contentType "modelResult"; String description "Normalize relative backscatter (NRB) profile vertically aligned to 20 to -1 km with vertical resolution of 30 m. (Photons km2/Joule)"; String long_name "NRB Profile"; String source "Atmosphere ATBD section 2.3"; String units "1"; String origname "nrb_profile"; String fullnamepath "/profile_3/nrb_profile"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_backg_mean2 { String contentType "modelResult"; String description "Signal mean from method 2 (pb2 defined in Atmosphere ATBD part 1 section 2.3.4)"; String long_name "Signal mean"; String source "Atmosphere ATBD section 3.3.4"; String units "counts"; String origname "backg_mean2"; String fullnamepath "/profile_3/backg_mean2"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_prof_dist_y { String contentType "referenceInformation"; String description "Across-Track distance from the reference ground track."; String long_name "Across Track Distance from RGT"; String source "ATL03g ATBD, Section 3.4"; String units "meters"; String origname "prof_dist_y"; String fullnamepath "/profile_3/prof_dist_y"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_beam_elevation { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Beam elevation"; String long_name "beam elevation"; String source "ATL03 ATBD"; String units "degrees"; String origname "beam_elevation"; String fullnamepath "/profile_3/beam_elevation"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_calibration_delta_time_end { String contentType "modelResult"; String description "Number of GPS seconds since the ATLAS SDP epoch where the cal interval ended. The corresponding start time of the interval is delta_time. 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."; String long_name "Calibration interval end time"; String source "Atmosphere ATBD"; String standard_name "time"; String units "seconds since 2018-01-01"; String origname "delta_time_end"; String fullnamepath "/profile_3/calibration/delta_time_end"; String coordinates "profile_3_calibration_delta_time profile_3_calibration_latitude profile_3_calibration_longitude"; } profile_3_calibration_cal_ozone_trans { Float32 _FillValue 3.402823466e+38; String contentType "modelResult"; String description "Ozone transmission term used to compute cal_const."; String long_name "Ozone transmission used"; String source "Atmosphere ATBD"; String units "1"; String origname "cal_ozone_trans"; String fullnamepath "/profile_3/calibration/cal_ozone_trans"; String coordinates "profile_3_calibration_delta_time profile_3_calibration_latitude profile_3_calibration_longitude"; } profile_3_calibration_cal_c_trans { Float32 _FillValue 3.402823466e+38; String contentType "modelResult"; String description "The total transmission used to compute cal_const."; String long_name "total transmission used"; String source "Atmosphere ATBD"; String units "1"; String origname "cal_c_trans"; String fullnamepath "/profile_3/calibration/cal_c_trans"; String coordinates "profile_3_calibration_delta_time profile_3_calibration_latitude profile_3_calibration_longitude"; } profile_3_calibration_longitude { String contentType "modelResult"; String description "Start Longitude of calibration interval."; String long_name "Calibration interval start longitude"; String source "Atmosphere ATBD"; String standard_name "longitude"; String units "degrees_east"; Float64 valid_max 180.00000000000000; Float64 valid_min -180.00000000000000; String origname "longitude"; String fullnamepath "/profile_3/calibration/longitude"; String coordinates "profile_3_calibration_delta_time profile_3_calibration_latitude"; } profile_3_calibration_latitude_end { String contentType "modelResult"; String description "Stop Latitude of calibration interval."; String long_name "Calibration interval end latitude"; String source "Atmosphere ATBD"; String units "degrees_north"; Float64 valid_max 90.000000000000000; Float64 valid_min -90.000000000000000; String origname "latitude_end"; String fullnamepath "/profile_3/calibration/latitude_end"; String coordinates "profile_3_calibration_delta_time profile_3_calibration_latitude profile_3_calibration_longitude"; } profile_3_calibration_latitude { String contentType "modelResult"; String description "Start Latitude of calibration interval."; String long_name "Calibration interval start Latitude"; String source "Atmosphere ATBD"; String standard_name "latitude"; String units "degrees_north"; Float64 valid_max 90.000000000000000; Float64 valid_min -90.000000000000000; String origname "latitude"; String fullnamepath "/profile_3/calibration/latitude"; String coordinates "profile_3_calibration_delta_time profile_3_calibration_longitude"; } profile_3_calibration_cal_molec { Float32 _FillValue 3.402823466e+38; String contentType "modelResult"; String description "Molecular Backscatter value used to compute cal_const."; String long_name "Molecular Backscatter used"; String source "Atmosphere ATBD"; String units "m-1 sr-1"; String origname "cal_molec"; String fullnamepath "/profile_3/calibration/cal_molec"; String coordinates "profile_3_calibration_delta_time profile_3_calibration_latitude profile_3_calibration_longitude"; } profile_3_calibration_cal_c { Float32 _FillValue 3.402823466e+38; String contentType "modelResult"; String description "Calculated calibration constant (one per beam, Defined by Atmosphere ATBD eqn 3.27)"; String long_name "Calculated Calibration constant"; String source "Atmosphere ATBD"; String units "Photons*m^3 *sr / J"; String origname "cal_c"; String fullnamepath "/profile_3/calibration/cal_c"; String coordinates "profile_3_calibration_delta_time profile_3_calibration_latitude profile_3_calibration_longitude"; } profile_3_calibration_cal_con { Int32 _FillValue 2147483647; String contentType "modelResult"; String description "Calibration Confidence"; String long_name "Calibration Confidence"; String source "Atmosphere ATBD"; String units "1"; String origname "cal_con"; String fullnamepath "/profile_3/calibration/cal_con"; String coordinates "profile_3_calibration_delta_time profile_3_calibration_latitude profile_3_calibration_longitude"; } profile_3_calibration_cal_nrb { Float32 _FillValue 3.402823466e+38; String contentType "modelResult"; String description "NRB value used to compute cal_const."; String long_name "NRB value used"; String source "Atmosphere ATBD"; String units "1"; String origname "cal_nrb"; String fullnamepath "/profile_3/calibration/cal_nrb"; String coordinates "profile_3_calibration_delta_time profile_3_calibration_latitude profile_3_calibration_longitude"; } profile_3_calibration_longitude_end { String contentType "modelResult"; String description "Stop Longitude of calibration interval."; String long_name "Calibration interval end longitude"; String source "Atmosphere ATBD"; String units "degrees_east"; Float64 valid_max 180.00000000000000; Float64 valid_min -180.00000000000000; String origname "longitude_end"; String fullnamepath "/profile_3/calibration/longitude_end"; String coordinates "profile_3_calibration_delta_time profile_3_calibration_latitude profile_3_calibration_longitude"; } profile_3_segment_id { String contentType "referenceInformation"; String description "A 7 digit number identifiying the along-track geolocation segment number. These are sequential, starting with 1 for the first segment after an ascending equatorial crossing node."; String long_name "along-track segment ID number."; String source "ATL03 ATBD, Section 3.1"; String units "1"; String origname "segment_id"; String fullnamepath "/profile_3/segment_id"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_surface_bin { Int32 _FillValue 2147483647; String contentType "modelResult"; String description "Vertially aligned, NRB bin number of the detected surface return."; String long_name "Surface bin"; String source "Atmosphere ATBD section 3.3.5"; String units "1"; String origname "surface_bin"; String fullnamepath "/profile_3/surface_bin"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_solar_elevation { String contentType "referenceInformation"; String description "Solar Angle above or below the plane tangent to the ellipsoid surface at the laser spot. Positive values mean the sun is above the horizon, while negative values mean it is below the horizon. The effect of atmospheric refraction is not included. This is a low precision value, with approximately TBD degree accuracy."; String long_name "solar elevation"; String source "ATL03g ATBD"; String units "degrees"; String origname "solar_elevation"; String fullnamepath "/profile_3/solar_elevation"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_sig_count_hi { String contentType "referenceInformation"; String description "Count of high-confidence signal photons"; String long_name "Count of Signa Heightsl - High"; String source "ATL03 ATBD, Section 5"; String units "counts"; String origname "sig_count_hi"; String fullnamepath "/profile_3/sig_count_hi"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_dtime_fac2 { Float32 _FillValue 3.402823466e+38; String contentType "modelResult"; String description "Dead time correction factor for surface signal computed from ATBD equation 2.1."; String long_name "dead_time_factor2"; String source "Atmosphere ATBD"; String units "1"; String origname "dtime_fac2"; String fullnamepath "/profile_3/dtime_fac2"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_prof_dist_x { String contentType "referenceInformation"; String description "Along-track distance from the equator crossing."; String long_name "Along Track Distance"; String source "ATL03g ATBD, Section 3.4"; String units "meters"; String origname "prof_dist_x"; String fullnamepath "/profile_3/prof_dist_x"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_backg_std_dev2 { String contentType "modelResult"; String description "Background standard deviation from the selected method used (Sstd2 Defined in Atmosphere ATBD section 2.3.2)"; String long_name "Background standard deviation 2"; String source "Atmosphere ATBD section 3.3.4"; String units "counts"; String origname "backg_std_dev2"; String fullnamepath "/profile_3/backg_std_dev2"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_backg_method2 { String contentType "modelResult"; String description "Background from method 2 in photons/bin. (pb2 Defined in Atmosphere ATBD section 2.3.2)"; String long_name "Background method 2"; String source "Atmosphere ATBD section 3.3.4"; String units "counts"; String origname "backg_method2"; String fullnamepath "/profile_3/backg_method2"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_pce_mframe_cnt { String contentType "referenceInformation"; String description "Major Frame Counter - The major frame counter is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID"; String long_name "PCE Major frame counter"; String source "ATL02"; String units "counts"; String origname "pce_mframe_cnt"; String fullnamepath "/profile_3/pce_mframe_cnt"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_sc_alt { String contentType "physicalMeasurement"; String description "Height of the spacecraft above the WGS84 ellipsoid."; String long_name "Altitude"; String source "ATL03g ATBD, Section 3.4"; String units "meters"; String origname "sc_alt"; String fullnamepath "/profile_3/sc_alt"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_cloud_fold_flag { Int16 _FillValue 127; String contentType "modelResult"; String description "Flag that indicates this profile likely contains cloud signal folded down from above 15 km to the last 2-3 km of the profile. See ATBD Table 3.9 for detailed flag value meanings"; String flag_meanings "no_folding goes5_indicates profile_indicates both_indicate"; Int16 flag_values 0, 1, 2, 3; String long_name "Cloud Folding Flag"; String source "Atmosphere ATBD"; String units "1"; Int16 valid_max 3; Int16 valid_min 0; String origname "cloud_fold_flag"; String fullnamepath "/profile_3/cloud_fold_flag"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_sig_h_sdev_low { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "SDev of the heights of low-confidence signal photons"; String long_name "SDev of Signal Heights -Low"; String source "ATL03 ATBD, Section 5"; String units "meters"; String origname "sig_h_sdev_low"; String fullnamepath "/profile_3/sig_h_sdev_low"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_sig_h_mean_low { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Mean height of low-confidence signal photons"; String long_name "Mean of Signal Heights - Low"; String source "ATL03 ATBD, Section 5"; String units "meters"; String origname "sig_h_mean_low"; String fullnamepath "/profile_3/sig_h_mean_low"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_sig_h_sdev_med { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "SDev of the heights of medium-confidence signal photons"; String long_name "SDev of Signa Heights -Med"; String source "ATL03 ATBD, Section 5"; String units "meters"; String origname "sig_h_sdev_med"; String fullnamepath "/profile_3/sig_h_sdev_med"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_nrb_bot_bin { Int32 _FillValue 2147483647; String contentType "modelResult"; String description "The ending (bottom) bin number within the 20 to -1 km vertically aligned profile where data are valid. Bin number starts at 1."; String long_name "NRB Profile bottom valid bin"; String source "Atmosphere ATBD section 2.3"; String units "1"; String origname "nrb_bot_bin"; String fullnamepath "/profile_3/nrb_bot_bin"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_surface_sig { String contentType "modelResult"; String description "Number of photons in the detected surface bin."; String long_name "Surface signal count"; String source "Atmosphere ATBD section 3.3.5"; String units "counts"; String origname "surface_sig"; String fullnamepath "/profile_3/surface_sig"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } profile_3_nrb_top_bin { Int32 _FillValue 2147483647; String contentType "modelResult"; String description "The starting (top) bin number within the 20 to -1 km vertically aligned profile where data are valid. Bin number starts at 1."; String long_name "NRB Profile top valid bin"; String source "Atmosphere ATBD section 2.3"; String units "counts"; String origname "nrb_top_bin"; String fullnamepath "/profile_3/nrb_top_bin"; String coordinates "profile_3_delta_time profile_3_latitude profile_3_longitude"; } quality_assessment_qa_granule_fail_reason { String contentType "qualityInformation"; String 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."; String flag_meanings "no_failure PROCESS_ERROR INSUFFICIENT_OUTPUT failure_3 failure_4 OTHER_FAILURE"; Int32 flag_values 0, 1, 2, 3, 4, 5; String long_name "Granule Failure Reason"; String source "Operations"; String units "1"; Int32 valid_max 5; Int32 valid_min 0; String origname "qa_granule_fail_reason"; String fullnamepath "/quality_assessment/qa_granule_fail_reason"; } quality_assessment_qa_granule_pass_fail { String contentType "qualityInformation"; String description "Flag indicating granule quality. 0=granule passes automatic QA. 1=granule fails automatic QA."; String flag_meanings "PASS FAIL"; Int32 flag_values 0, 1; String long_name "Granule Pass Flag"; String source "Operations"; String units "1"; Int32 valid_max 1; Int32 valid_min 0; String origname "qa_granule_pass_fail"; String fullnamepath "/quality_assessment/qa_granule_pass_fail"; } quality_assessment_profile_1_n_val_cal { String contentType "qualityInformation"; String description "Number valid calibration constants"; String long_name "Number valid calibration constants"; String source "Atmosphere ATBD"; String units "counts"; String origname "n_val_cal"; String fullnamepath "/quality_assessment/profile_1/n_val_cal"; String coordinates "quality_assessment_profile_1_delta_time"; } quality_assessment_profile_1_cal_c_avg { Float32 _FillValue 3.402823466e+38; String contentType "qualityInformation"; String description "Average of the calculated calibration constant (Defined by Atmosphere ATBD eqn 3.27)"; String long_name "Average of the Calibration constant"; String source "Atmosphere ATBD"; String units "Photons*m^3 *sr / J"; String origname "cal_c_avg"; String fullnamepath "/quality_assessment/profile_1/cal_c_avg"; String coordinates "quality_assessment_profile_1_delta_time"; } quality_assessment_profile_1_cal_c_std { Float32 _FillValue 3.402823466e+38; String contentType "qualityInformation"; String description "Standard Deviation of the calculated calibration constant (Defined by Atmosphere ATBD eqn 3.27)"; String long_name "Standard Deviation of the Calibration constant"; String source "Atmosphere ATBD"; String units "Photons*m^3 *sr / J"; String origname "cal_c_std"; String fullnamepath "/quality_assessment/profile_1/cal_c_std"; String coordinates "quality_assessment_profile_1_delta_time"; } quality_assessment_profile_1_back1_avg { Float32 _FillValue 3.402823466e+38; String contentType "qualityInformation"; String description "Background method 1 average"; String long_name "Background Method 1 Avg"; String source "Atmosphere ATBD"; String units "counts"; String origname "back1_avg"; String fullnamepath "/quality_assessment/profile_1/back1_avg"; String coordinates "quality_assessment_profile_1_delta_time"; } quality_assessment_profile_1_tx_nrg_std { Float32 _FillValue 3.402823466e+38; String contentType "qualityInformation"; String description "Standard Deviation of the laser energy"; String long_name "Standard Deviation of the laser energy"; String source "Atmosphere ATBD"; String units "joules"; String origname "tx_nrg_std"; String fullnamepath "/quality_assessment/profile_1/tx_nrg_std"; String coordinates "quality_assessment_profile_1_delta_time"; } quality_assessment_profile_1_back3_avg { Float32 _FillValue 3.402823466e+38; String contentType "qualityInformation"; String description "Background method 3 average"; String long_name "Background Method 3 Avg"; String source "Atmosphere ATBD"; String units "counts"; String origname "back3_avg"; String fullnamepath "/quality_assessment/profile_1/back3_avg"; String coordinates "quality_assessment_profile_1_delta_time"; } quality_assessment_profile_1_back3_min { Float32 _FillValue 3.402823466e+38; String contentType "qualityInformation"; String description "Background method 3 min"; String long_name "Background Method 3 Min"; String source "Atmosphere ATBD"; String units "counts"; String origname "back3_min"; String fullnamepath "/quality_assessment/profile_1/back3_min"; String coordinates "quality_assessment_profile_1_delta_time"; } quality_assessment_profile_1_back1_min { Float32 _FillValue 3.402823466e+38; String contentType "qualityInformation"; String description "Background method 1 min"; String long_name "Background Method 1 Min"; String source "Atmosphere ATBD"; String units "counts"; String origname "back1_min"; String fullnamepath "/quality_assessment/profile_1/back1_min"; String coordinates "quality_assessment_profile_1_delta_time"; } quality_assessment_profile_1_back2_min { Float32 _FillValue 3.402823466e+38; String contentType "qualityInformation"; String description "Background method 2 min"; String long_name "Background Method 2 Min"; String source "Atmosphere ATBD"; String units "counts"; String origname "back2_min"; String fullnamepath "/quality_assessment/profile_1/back2_min"; String coordinates "quality_assessment_profile_1_delta_time"; } quality_assessment_profile_1_surf_sig_avg { Float32 _FillValue 3.402823466e+38; String contentType "qualityInformation"; String description "Surface signal average"; String long_name "Surface signal average"; String source "Atmosphere ATBD"; String units "photons"; String origname "surf_sig_avg"; String fullnamepath "/quality_assessment/profile_1/surf_sig_avg"; String coordinates "quality_assessment_profile_1_delta_time"; } quality_assessment_profile_1_surf_sig_max { Float32 _FillValue 3.402823466e+38; String contentType "qualityInformation"; String description "Surface signal max"; String long_name "Surface signal max"; String source "Atmosphere ATBD"; String units "photons"; String origname "surf_sig_max"; String fullnamepath "/quality_assessment/profile_1/surf_sig_max"; String coordinates "quality_assessment_profile_1_delta_time"; } quality_assessment_profile_1_tx_nrg_avg { Float32 _FillValue 3.402823466e+38; String contentType "qualityInformation"; String description "Average of the laser energy"; String long_name "Average of the laser energy"; String source "Atmosphere ATBD"; String units "joules"; String origname "tx_nrg_avg"; String fullnamepath "/quality_assessment/profile_1/tx_nrg_avg"; String coordinates "quality_assessment_profile_1_delta_time"; } quality_assessment_profile_1_back1_max { Float32 _FillValue 3.402823466e+38; String contentType "qualityInformation"; String description "Background method 1 max"; String long_name "Background Method 1 Max"; String source "Atmosphere ATBD"; String units "counts"; String origname "back1_max"; String fullnamepath "/quality_assessment/profile_1/back1_max"; String coordinates "quality_assessment_profile_1_delta_time"; } quality_assessment_profile_1_surf_pct { Float32 _FillValue 3.402823466e+38; String contentType "qualityInformation"; String description "Percent time surface height was detected"; String long_name "Surface Percentage"; String source "Atmosphere ATBD"; String units "percent"; String origname "surf_pct"; String fullnamepath "/quality_assessment/profile_1/surf_pct"; String coordinates "quality_assessment_profile_1_delta_time"; } quality_assessment_profile_1_ht_diff_avg { Float32 _FillValue 3.402823466e+38; String contentType "qualityInformation"; String description "Average of the surface height minus the DEM height"; String long_name "Ht Diff Avg"; String source "Atmosphere ATBD"; String units "meters"; String origname "ht_diff_avg"; String fullnamepath "/quality_assessment/profile_1/ht_diff_avg"; String coordinates "quality_assessment_profile_1_delta_time"; } quality_assessment_profile_1_back2_max { Float32 _FillValue 3.402823466e+38; String contentType "qualityInformation"; String description "Background method 2 max"; String long_name "Background Method 2 Max"; 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String source "Atmosphere ATBD"; String units "counts"; String origname "back2_max"; String fullnamepath "/quality_assessment/profile_3/back2_max"; String coordinates "quality_assessment_profile_3_delta_time"; } quality_assessment_profile_3_back2_avg { Float32 _FillValue 3.402823466e+38; String contentType "qualityInformation"; String description "Background method 2 average"; String long_name "Background Method 2 Avg"; String source "Atmosphere ATBD"; String units "counts"; String origname "back2_avg"; String fullnamepath "/quality_assessment/profile_3/back2_avg"; String coordinates "quality_assessment_profile_3_delta_time"; } quality_assessment_profile_3_back3_max { Float32 _FillValue 3.402823466e+38; String contentType "qualityInformation"; String description "Background method 3 max"; String long_name "Background Method 3 Max"; String source "Atmosphere ATBD"; String units "counts"; String origname "back3_max"; String fullnamepath "/quality_assessment/profile_3/back3_max"; String coordinates "quality_assessment_profile_3_delta_time"; } quality_assessment_profile_3_surf_sig_min { Float32 _FillValue 3.402823466e+38; String contentType "qualityInformation"; String description "Surface signal min"; String long_name "Surface signal min"; String source "Atmosphere ATBD"; String units "photons"; String origname "surf_sig_min"; String fullnamepath "/quality_assessment/profile_3/surf_sig_min"; String coordinates "quality_assessment_profile_3_delta_time"; } meteorology_molec_bkscat_met_tropt { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Tropopause temperature (k)"; String long_name "blended_tropopause_temperature"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String standard_name "temperature"; String units "K"; String origname "met_tropt"; String fullnamepath "/meteorology_molec_bkscat/met_tropt"; String coordinates "meteorology_molec_bkscat_delta_time meteorology_molec_bkscat_latitude meteorology_molec_bkscat_longitude"; } meteorology_molec_bkscat_mol_backs_folded { String contentType "modelResult"; String description "Folded molecular transmission profile, 30 m resolution, , m-1 sr-1; 20 km to -1 km (equation 3.17)"; String long_name "Folded molecular transmission profile"; String source "Atmosphere ATBD"; String units "m-1 sr-1"; String origname "mol_backs_folded"; String fullnamepath "/meteorology_molec_bkscat/mol_backs_folded"; String coordinates "meteorology_molec_bkscat_delta_time meteorology_molec_bkscat_latitude meteorology_molec_bkscat_longitude"; } meteorology_molec_bkscat_ozone_trans { String contentType "modelResult"; String description "Ozone transmission profile, 30 m resolution, 20 km to -1 km"; String long_name "Ozone transmission profile"; String source "Atmosphere ATBD"; String units "1"; String origname "ozone_trans"; String fullnamepath "/meteorology_molec_bkscat/ozone_trans"; String coordinates "meteorology_molec_bkscat_delta_time meteorology_molec_bkscat_latitude meteorology_molec_bkscat_longitude"; } meteorology_molec_bkscat_molec_bkscat_p { String contentType "modelResult"; String description "Pressure profiles from 20 km to -1 km"; String long_name "Pressure profile"; String source "Atmosphere ATBD"; String units "Pa"; String origname "molec_bkscat_p"; String fullnamepath "/meteorology_molec_bkscat/molec_bkscat_p"; String coordinates "meteorology_molec_bkscat_delta_time meteorology_molec_bkscat_latitude meteorology_molec_bkscat_longitude"; } meteorology_molec_bkscat_met_t2m { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Temperature at 2m above the displacement height (K)"; String long_name "temperature_at_2m"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String standard_name "temperature"; String units "K"; String origname "met_t2m"; String fullnamepath "/meteorology_molec_bkscat/met_t2m"; String coordinates "meteorology_molec_bkscat_delta_time meteorology_molec_bkscat_latitude meteorology_molec_bkscat_longitude"; } meteorology_molec_bkscat_met_u2m { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Eastward wind at 2m above the displacement height (m/s-1)"; String long_name "Eastward_wind_at_2m"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String standard_name "eastward_wind"; String units "m s-1"; String origname "met_u2m"; String fullnamepath "/meteorology_molec_bkscat/met_u2m"; String coordinates "meteorology_molec_bkscat_delta_time meteorology_molec_bkscat_latitude meteorology_molec_bkscat_longitude"; } meteorology_molec_bkscat_met_u10m { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Eastward wind at 10m above the displacement height (m/s-1)"; String long_name "Eastward_wind_at_10m"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String standard_name "eastward_wind"; String units "m s-1"; String origname "met_u10m"; String fullnamepath "/meteorology_molec_bkscat/met_u10m"; String coordinates "meteorology_molec_bkscat_delta_time meteorology_molec_bkscat_latitude meteorology_molec_bkscat_longitude"; } meteorology_molec_bkscat_molec_trans { String contentType "modelResult"; String description "Molecular transmission profile, 30 m resolution, 20 km to -1 km"; String long_name "Molecular transmission profile"; String source "Atmosphere ATBD"; String units "1"; String origname "molec_trans"; String fullnamepath "/meteorology_molec_bkscat/molec_trans"; String coordinates "meteorology_molec_bkscat_delta_time meteorology_molec_bkscat_latitude meteorology_molec_bkscat_longitude"; } meteorology_molec_bkscat_met_cldprs { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Pressure of the highest cloud top at this location from GEOS5 data"; String long_name "cloud_top_pressure"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String standard_name "pressure"; String units "Pa"; String origname "met_cldprs"; String fullnamepath "/meteorology_molec_bkscat/met_cldprs"; String coordinates "meteorology_molec_bkscat_delta_time meteorology_molec_bkscat_latitude meteorology_molec_bkscat_longitude"; } meteorology_molec_bkscat_molec_bkscat_rh { String contentType "modelResult"; String description "Relative humidity profiles from 20 km to -1 km"; String long_name "Relative humidity profiles"; String source "Atmosphere ATBD"; String units "percentage"; String origname "molec_bkscat_rh"; String fullnamepath "/meteorology_molec_bkscat/molec_bkscat_rh"; String coordinates "meteorology_molec_bkscat_delta_time meteorology_molec_bkscat_latitude meteorology_molec_bkscat_longitude"; } meteorology_molec_bkscat_met_v50m { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Northward wind at 50m above the displacement height (m/s-1)"; String long_name "northward_wind_at_50m"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String standard_name "northward_wind"; String units "m s-1"; String origname "met_v50m"; String fullnamepath "/meteorology_molec_bkscat/met_v50m"; String coordinates "meteorology_molec_bkscat_delta_time meteorology_molec_bkscat_latitude meteorology_molec_bkscat_longitude"; } meteorology_molec_bkscat_met_v10m { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Northward wind at 10m above the displacement height (m/s-1)"; String long_name "Northward_wind_at_10m"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String standard_name "northward_wind"; String units "m s-1"; String origname "met_v10m"; String fullnamepath "/meteorology_molec_bkscat/met_v10m"; String coordinates "meteorology_molec_bkscat_delta_time meteorology_molec_bkscat_latitude meteorology_molec_bkscat_longitude"; } meteorology_molec_bkscat_longitude { String contentType "referenceInformation"; String description "Longitude at the the top of the ATM histogram, WGS84, East=+, derived from the geolocation of the ATM range window."; String long_name "Longitude of the ATM histogram"; String source "ATL03g ATBD"; String standard_name "longitude"; String units "degrees_east"; Float64 valid_max 180.00000000000000; Float64 valid_min -180.00000000000000; String origname "longitude"; String fullnamepath "/meteorology_molec_bkscat/longitude"; String coordinates "meteorology_molec_bkscat_delta_time meteorology_molec_bkscat_latitude"; } meteorology_molec_bkscat_met_ps { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Surface Pressure (Pa)"; String long_name "Surface Pressure"; String source "GEOS5 FPIT 3D DFPITI3NVASM"; String standard_name "pressure"; String units "Pa"; String origname "met_ps"; String fullnamepath "/meteorology_molec_bkscat/met_ps"; String coordinates "meteorology_molec_bkscat_delta_time meteorology_molec_bkscat_latitude meteorology_molec_bkscat_longitude"; } meteorology_molec_bkscat_latitude { String contentType "referenceInformation"; String description "Latitude at the the top of the ATM histogram, WGS84, North=+, Derived from the geolocation of the ATM range window."; String long_name "Latitude of the ATM histogram"; String source "ATL03g ATBD"; String standard_name "latitude"; String units "degrees_north"; Float64 valid_max 90.000000000000000; Float64 valid_min -90.000000000000000; String origname "latitude"; String fullnamepath "/meteorology_molec_bkscat/latitude"; String coordinates "meteorology_molec_bkscat_delta_time meteorology_molec_bkscat_longitude"; } meteorology_molec_bkscat_surf_type { String contentType "referenceInformation"; String description "Flags describing which surface types this interval is associated with. 0=not type, 1=is type. Order of array is land, ocean, sea ice, land ice, inland water."; String flag_meanings "not_type is_type"; Int16 flag_values 0, 1; String long_name "surface type"; String source "ATL03 ATBD, Section 4"; String units "1"; Int16 valid_max 1; Int16 valid_min 0; String origname "surf_type"; String fullnamepath "/meteorology_molec_bkscat/surf_type"; String coordinates "meteorology_molec_bkscat_delta_time meteorology_molec_bkscat_latitude meteorology_molec_bkscat_longitude"; } meteorology_molec_bkscat_met_qv10m { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Specific humidity at 10 m above the displacement height"; String long_name "specific_humidity_at_10m"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String standard_name "specific_humidity"; String units "kg kg-1"; String origname "met_qv10m"; String fullnamepath "/meteorology_molec_bkscat/met_qv10m"; String coordinates "meteorology_molec_bkscat_delta_time meteorology_molec_bkscat_latitude meteorology_molec_bkscat_longitude"; } meteorology_molec_bkscat_met_tqi { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Total column cloud ice (Kg/m2)"; String long_name "cloud_ice"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String units "kg m-2"; String origname "met_tqi"; String fullnamepath "/meteorology_molec_bkscat/met_tqi"; String coordinates "meteorology_molec_bkscat_delta_time meteorology_molec_bkscat_latitude meteorology_molec_bkscat_longitude"; } meteorology_molec_bkscat_met_t10m { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Temperature at 10m above the displacement height (K)"; String long_name "temperature_at_10m"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String standard_name "temperature"; String units "K"; String origname "met_t10m"; String fullnamepath "/meteorology_molec_bkscat/met_t10m"; String coordinates "meteorology_molec_bkscat_delta_time meteorology_molec_bkscat_latitude meteorology_molec_bkscat_longitude"; } meteorology_molec_bkscat_met_tql { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Total column cloud liquid water (kg/m2)"; String long_name "cloud_liquid_water"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String units "kg m-2"; String origname "met_tql"; String fullnamepath "/meteorology_molec_bkscat/met_tql"; String coordinates "meteorology_molec_bkscat_delta_time meteorology_molec_bkscat_latitude meteorology_molec_bkscat_longitude"; } meteorology_molec_bkscat_met_v2m { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Northward wind at 2m above the displacement height (m/s-1)"; String long_name "Northward_wind_at_2m"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String standard_name "northward_wind"; String units "m s-1"; String origname "met_v2m"; String fullnamepath "/meteorology_molec_bkscat/met_v2m"; String coordinates "meteorology_molec_bkscat_delta_time meteorology_molec_bkscat_latitude meteorology_molec_bkscat_longitude"; } meteorology_molec_bkscat_met_ts { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Surface skin temperature (K)"; String long_name "surface_temperature"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String standard_name "temperature"; String units "K"; String origname "met_ts"; String fullnamepath "/meteorology_molec_bkscat/met_ts"; String coordinates "meteorology_molec_bkscat_delta_time meteorology_molec_bkscat_latitude meteorology_molec_bkscat_longitude"; } meteorology_molec_bkscat_segment_id { String contentType "referenceInformation"; String description "A 7 digit number identifiying the along-track geolocation segment number. These are sequential, starting with 1 for the first segment after an ascending equatorial crossing node."; String long_name "along-track segment ID number."; String source "ATL03 ATBD, Section 3.1"; String units "1"; String origname "segment_id"; String fullnamepath "/meteorology_molec_bkscat/segment_id"; String coordinates "meteorology_molec_bkscat_delta_time meteorology_molec_bkscat_latitude meteorology_molec_bkscat_longitude"; } meteorology_molec_bkscat_met_qv2m { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Specific humidity at 2 m above the displacement height"; String long_name "specific_humidity_at_2m"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String standard_name "specific_humidity"; String units "kg kg-1"; String origname "met_qv2m"; String fullnamepath "/meteorology_molec_bkscat/met_qv2m"; String coordinates "meteorology_molec_bkscat_delta_time meteorology_molec_bkscat_latitude meteorology_molec_bkscat_longitude"; } meteorology_molec_bkscat_molec_bkscat_t { String contentType "modelResult"; String description "Temperature profiles from 20 km to -1 km"; String long_name "Temperature profile"; String source "Atmosphere ATBD"; String units "K"; String origname "molec_bkscat_t"; String fullnamepath "/meteorology_molec_bkscat/molec_bkscat_t"; String coordinates "meteorology_molec_bkscat_delta_time meteorology_molec_bkscat_latitude meteorology_molec_bkscat_longitude"; } meteorology_molec_bkscat_met_u50m { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Eastward wind at 50m above the displacement height (m/s-1)"; String long_name "Eastward_wind_at_50m"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String standard_name "eastward_wind"; String units "m s-1"; String origname "met_u50m"; String fullnamepath "/meteorology_molec_bkscat/met_u50m"; String coordinates "meteorology_molec_bkscat_delta_time meteorology_molec_bkscat_latitude meteorology_molec_bkscat_longitude"; } meteorology_molec_bkscat_met_slp { String contentType "modelResult"; String description "sea-level pressure (Pa)"; String long_name "sea_level_pressure"; String source "GEOS5 FPIT 3D DFPITI3NVASM"; String standard_name "sea_level_pressure"; String units "Pa"; String origname "met_slp"; String fullnamepath "/meteorology_molec_bkscat/met_slp"; String coordinates "meteorology_molec_bkscat_delta_time meteorology_molec_bkscat_latitude meteorology_molec_bkscat_longitude"; } meteorology_molec_bkscat_met_troppb { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Blended tropopause pressure (pa)"; String long_name "blended_tropopause_pressure"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String standard_name "pressure"; String units "Pa"; String origname "met_troppb"; String fullnamepath "/meteorology_molec_bkscat/met_troppb"; String coordinates "meteorology_molec_bkscat_delta_time meteorology_molec_bkscat_latitude meteorology_molec_bkscat_longitude"; } meteorology_molec_bkscat_mol_backscatter { String contentType "modelResult"; String description "Molecular backscatter profile, 30 m resolution, 20 km to -1 km"; String long_name "Molecular backscatter profile"; String source "Atmosphere ATBD"; String units "m-1 sr-1"; String origname "mol_backscatter"; String fullnamepath "/meteorology_molec_bkscat/mol_backscatter"; String coordinates "meteorology_molec_bkscat_delta_time meteorology_molec_bkscat_latitude meteorology_molec_bkscat_longitude"; } profile_2_sig_count_med { String contentType "referenceInformation"; String description "Count of medium-confidence signal photons"; String long_name "Count of Signal Heights - Medium"; String source "ATL03 ATBD, Section 5"; String units "counts"; String origname "sig_count_med"; String fullnamepath "/profile_2/sig_count_med"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_dem_flag { Int16 _FillValue 127; String contentType "referenceInformation"; String description "Indicates source of the DEM height. Values: 0=None, 1=Arctic, 2=Global, 3=MSS, 4=Antarctic."; String flag_meanings "none arctic global mss antarctic"; Int16 flag_values 0, 1, 2, 3, 4; String long_name "dem source flag"; String source "Atmosphere ATBD"; String units "1"; Int16 valid_max 4; Int16 valid_min 0; String origname "dem_flag"; String fullnamepath "/profile_2/dem_flag"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_bckgrd_atlas_bckgrd_counts_reduced { String contentType "modelResult"; String description "Number of photon counts in the 50-shot sum after subtracting the number of signal photon events, defined as in ATBD Section 5, in that span."; String long_name "ATLAS 50-shot background count - reduced"; String source "ATL03 ATBD Section 7.3"; String units "counts"; String origname "bckgrd_counts_reduced"; String fullnamepath "/profile_2/bckgrd_atlas/bckgrd_counts_reduced"; String coordinates "profile_2_bckgrd_atlas_delta_time"; } profile_2_bckgrd_atlas_bckgrd_hist_top { String contentType "modelResult"; String description "The height of the top of the altimetric histogram, in meters above the WGS-84 ellipsoid, with all geophysical corrections applied. Parameter is ingested at 50-Hz, and values are repeated to form a 200-Hz array."; String long_name "Top of the altimetric range window"; String source "ATL03 ATBD Section 7.3"; String units "meters"; String origname "bckgrd_hist_top"; String fullnamepath "/profile_2/bckgrd_atlas/bckgrd_hist_top"; String coordinates "profile_2_bckgrd_atlas_delta_time"; } profile_2_bckgrd_atlas_bckgrd_int_height { String contentType "modelResult"; String description "The height of the altimetric range window. This is the height over which the 50-shot sum is generated. Parameter is ingested at 50-Hz, and values are repeated to form a 200-Hz array."; String long_name "Altimetric range window width"; String source "ATL03 ATBD Section 7.3"; String units "meters"; String origname "bckgrd_int_height"; String fullnamepath "/profile_2/bckgrd_atlas/bckgrd_int_height"; String coordinates "profile_2_bckgrd_atlas_delta_time"; } profile_2_bckgrd_atlas_bckgrd_int_height_reduced { String contentType "modelResult"; String description "The height of the altimetric range window after subtracting the height span of the signal photon events in the 50-shot span."; String long_name "Altimetric range window height - reduced"; String source "ATL03 ATBD Section 7.3"; String units "meters"; String origname "bckgrd_int_height_reduced"; String fullnamepath "/profile_2/bckgrd_atlas/bckgrd_int_height_reduced"; String coordinates "profile_2_bckgrd_atlas_delta_time"; } profile_2_bckgrd_atlas_bckgrd_counts { String contentType "modelResult"; String description "Onboard 50 shot background (200 Hz) sum of photon events within the altimetric range window."; String long_name "ATLAS 50-shot background count"; String source "ATL03 ATBD Section 7.3"; String units "counts"; String origname "bckgrd_counts"; String fullnamepath "/profile_2/bckgrd_atlas/bckgrd_counts"; String coordinates "profile_2_bckgrd_atlas_delta_time"; } profile_2_bckgrd_atlas_bckgrd_rate { String contentType "modelResult"; String description "The background count rate from the 50-shot altimetric histogram after removing the number of likely signal photons based on Section 5."; String long_name "Background count rate based on the ATLAS 50-shot sum"; String source "ATL03 ATBD Section 7.3"; String units "counts / second"; String origname "bckgrd_rate"; String fullnamepath "/profile_2/bckgrd_atlas/bckgrd_rate"; String coordinates "profile_2_bckgrd_atlas_delta_time"; } profile_2_bckgrd_atlas_pce_mframe_cnt { String contentType "referenceInformation"; String description "Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID"; String long_name "PCE Major frame counter"; String source "ATL02"; String units "counts"; String origname "pce_mframe_cnt"; String fullnamepath "/profile_2/bckgrd_atlas/pce_mframe_cnt"; String coordinates "profile_2_bckgrd_atlas_delta_time"; } profile_2_sig_count_low { String contentType "referenceInformation"; String description "Count of low-confidence signal photons"; String long_name "Count of Signal Heights - Low"; String source "ATL03 ATBD, Section 5"; String units "counts"; String origname "sig_count_low"; String fullnamepath "/profile_2/sig_count_low"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_backg_method1 { String contentType "modelResult"; String description "Background from method 1in photons/bin. (pb1 Defined in Atmosphere ATBD section 2.3.2)"; String long_name "Background method 1"; String source "Atmosphere ATBD section 3.3.4"; String units "counts"; String origname "backg_method1"; String fullnamepath "/profile_2/backg_method1"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_sig_h_sdev_hi { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "SDev of the heights of high-confidence signal photons"; String long_name "SDev of Signal Heights -High"; String source "ATL03 ATBD, Section 5"; String units "meters"; String origname "sig_h_sdev_hi"; String fullnamepath "/profile_2/sig_h_sdev_hi"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_surface_conf { String contentType "modelResult"; String description "The level of confidence in the surface signal magnitude and location for each beam. (1.0 - lowest confidence; 100.0 - highest confidence)."; String long_name "Surface signal confidence"; String source "Atmosphere ATBD section 3.3.5"; String units "1"; String origname "surface_conf"; String fullnamepath "/profile_2/surface_conf"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_dtime_fac1 { Float32 _FillValue 3.402823466e+38; String contentType "modelResult"; String description "Dead time correction factor for surface signal computed from radiometric lookup table."; String long_name "dead_time_factor1"; String source "Atmosphere ATBD"; String units "1"; String origname "dtime_fac1"; String fullnamepath "/profile_2/dtime_fac1"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_atm_tw_top { String contentType "referenceInformation"; String description "The geolocated ellipsoidal height at the top of the Atmospheric range window"; String long_name "Atmospheric Telemetry Window Top"; String source "ATL03g ATBD"; String units "meters"; String origname "atm_tw_top"; String fullnamepath "/profile_2/atm_tw_top"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_sig_h_mean_hi { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Mean height of high-confidence signal photons"; String long_name "Mean of SignalHeights - High"; String source "ATL03 ATBD, Section 5"; String units "meters"; String origname "sig_h_mean_hi"; String fullnamepath "/profile_2/sig_h_mean_hi"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_ret_sensitivity { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Receiver response per joule/return pulse in the field of view, in the absence of any deadtime effects."; String long_name "Return Sensitivity"; String source "ATL02 ATBD, Section 5.5.2"; String units "events/pulse"; String origname "ret_sensitivity"; String fullnamepath "/profile_2/ret_sensitivity"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_beam_azimuth { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Beam azimuth"; String long_name "beam azimuth"; String source "ATL03 ATBD"; String units "degrees_east"; String origname "beam_azimuth"; String fullnamepath "/profile_2/beam_azimuth"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_range_to_top { String contentType "referenceInformation"; String description "Range from the spacecraft to the top of the atmosphere range window."; String long_name "Range"; String source "Atmosphere ATBD"; String units "meters"; String origname "range_to_top"; String fullnamepath "/profile_2/range_to_top"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_surface_thresh { String contentType "modelResult"; String description "Surface signal threshold"; String long_name "Surface signal threshold"; String source "Atmosphere ATBD section 3.3.5"; String units "photons"; String origname "surface_thresh"; String fullnamepath "/profile_2/surface_thresh"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_solar_azimuth { String contentType "referenceInformation"; String description "The direction, eastwards from north, of the sun vector as seen by an observer at the laser ground spot."; String long_name "solar azimuth"; String source "ATL03g ATBD"; String units "degrees_east"; String origname "solar_azimuth"; String fullnamepath "/profile_2/solar_azimuth"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_longitude { String contentType "referenceInformation"; String description "Longitude at the the top of the ATM histogram, WGS84, East=+, derived from the geolocation of the ATM range window."; String long_name "Longitude of the ATM histogram"; String source "ATL03g ATBD"; String standard_name "longitude"; String units "degrees_east"; Float64 valid_max 180.00000000000000; Float64 valid_min -180.00000000000000; String origname "longitude"; String fullnamepath "/profile_2/longitude"; String coordinates "profile_2_delta_time profile_2_latitude"; } profile_2_latitude { String contentType "referenceInformation"; String description "Latitude at the the top of the ATM histogram, WGS84, North=+, Derived from the geolocation of the ATM range window."; String long_name "Latitude of the ATM histogram"; String source "ATL03g ATBD"; String standard_name "latitude"; String units "degrees_north"; Float64 valid_max 90.000000000000000; Float64 valid_min -90.000000000000000; String origname "latitude"; String fullnamepath "/profile_2/latitude"; String coordinates "profile_2_delta_time profile_2_longitude"; } profile_2_surf_type { String contentType "referenceInformation"; String description "Flags describing which surface types this interval is associated with. 0=not type, 1=is type. Order of array is land, ocean, sea ice, land ice, inland water."; String flag_meanings "not_type is_type"; Int16 flag_values 0, 1; String long_name "surface type"; String source "ATL03 ATBD, Section 4"; String units "1"; Int16 valid_max 1; Int16 valid_min 0; String origname "surf_type"; String fullnamepath "/profile_2/surf_type"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_atm_rw_width_m { String contentType "referenceInformation"; String description "The range, in meters, from the Atmospheric range window start to the range window stop."; String long_name "Atmospheric Range Window Width"; String source "ATL02"; String units "seconds"; String origname "atm_rw_width_m"; String fullnamepath "/profile_2/atm_rw_width_m"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_backg_method3 { Float32 _FillValue 3.402823466e+38; String contentType "modelResult"; String description "Background from method 3 in photons/bin. (Defined in Atmosphere ATBD section 3.3.4)"; String long_name "Background method 3"; String source "Atmosphere ATBD section 3.3.4"; String units "counts"; String origname "backg_method3"; String fullnamepath "/profile_2/backg_method3"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_surf_type_igbp { String contentType "referenceInformation"; String description "IGBP Surface Type"; String long_name "IGBP Surface Type"; String source "Atmosphere ATBD, IGBP Surface Type"; String units "1"; String origname "surf_type_igbp"; String fullnamepath "/profile_2/surf_type_igbp"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_sig_h_mean_med { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Mean height of medium-confidence signal photons"; String long_name "Mean of Signa Heightsl - Med"; String source "ATL03 ATBD, Section 5"; String units "meters"; String origname "sig_h_mean_med"; String fullnamepath "/profile_2/sig_h_mean_med"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_dem_h { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Best available DEM (in priority of Arctic/Antarctic/Global/MSS) value at the geolocation point."; String long_name "DEM Height"; String source "Atmosphere ATBD"; String units "meters"; String origname "dem_h"; String fullnamepath "/profile_2/dem_h"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_surface_width { String contentType "modelResult"; String description "The number of bins comprising the surface signal for each beam."; String long_name "Surface signal width"; String source "Atmosphere ATBD section 3.3.5"; String units "bins"; String origname "surface_width"; String fullnamepath "/profile_2/surface_width"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_tx_pulse_energy { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Transmit energy, from the laser internal energy monitor, split into per-beam measurements."; String long_name "Transmit Pulse Energy"; String source "ATL02 ATBD, Section 7.2"; String units "Joules"; String origname "tx_pulse_energy"; String fullnamepath "/profile_2/tx_pulse_energy"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_surface_height { Float32 _FillValue 3.402823466e+38; String contentType "modelResult"; String description "Height of the detected surface bin."; String long_name "Surface height"; String source "Atmosphere ATBD section 3.3.5"; String units "meters"; String origname "surface_height"; String fullnamepath "/profile_2/surface_height"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_bg_sensitivity { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Receiver response per watt of continuous illumination in the passband from a diffuse source larger than the field of view, in the absence of any dead time effects."; String long_name "Background Sensitivity"; String source "ATL02 ATBD, Section 5.5.2"; String units "events/sec"; String origname "bg_sensitivity"; String fullnamepath "/profile_2/bg_sensitivity"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_nrb_profile { Float32 _FillValue 3.402823466e+38; String contentType "modelResult"; String description "Normalize relative backscatter (NRB) profile vertically aligned to 20 to -1 km with vertical resolution of 30 m. (Photons km2/Joule)"; String long_name "NRB Profile"; String source "Atmosphere ATBD section 2.3"; String units "1"; String origname "nrb_profile"; String fullnamepath "/profile_2/nrb_profile"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_backg_mean2 { String contentType "modelResult"; String description "Signal mean from method 2 (pb2 defined in Atmosphere ATBD part 1 section 2.3.4)"; String long_name "Signal mean"; String source "Atmosphere ATBD section 3.3.4"; String units "counts"; String origname "backg_mean2"; String fullnamepath "/profile_2/backg_mean2"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_prof_dist_y { String contentType "referenceInformation"; String description "Across-Track distance from the reference ground track."; String long_name "Across Track Distance from RGT"; String source "ATL03g ATBD, Section 3.4"; String units "meters"; String origname "prof_dist_y"; String fullnamepath "/profile_2/prof_dist_y"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_beam_elevation { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Beam elevation"; String long_name "beam elevation"; String source "ATL03 ATBD"; String units "degrees"; String origname "beam_elevation"; String fullnamepath "/profile_2/beam_elevation"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_calibration_delta_time_end { String contentType "modelResult"; String description "Number of GPS seconds since the ATLAS SDP epoch where the cal interval ended. The corresponding start time of the interval is delta_time. 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."; String long_name "Calibration interval end time"; String source "Atmosphere ATBD"; String standard_name "time"; String units "seconds since 2018-01-01"; String origname "delta_time_end"; String fullnamepath "/profile_2/calibration/delta_time_end"; String coordinates "profile_2_calibration_delta_time profile_2_calibration_latitude profile_2_calibration_longitude"; } profile_2_calibration_cal_ozone_trans { Float32 _FillValue 3.402823466e+38; String contentType "modelResult"; String description "Ozone transmission term used to compute cal_const."; String long_name "Ozone transmission used"; String source "Atmosphere ATBD"; String units "1"; String origname "cal_ozone_trans"; String fullnamepath "/profile_2/calibration/cal_ozone_trans"; String coordinates "profile_2_calibration_delta_time profile_2_calibration_latitude profile_2_calibration_longitude"; } profile_2_calibration_cal_c_trans { Float32 _FillValue 3.402823466e+38; String contentType "modelResult"; String description "The total transmission used to compute cal_const."; String long_name "total transmission used"; String source "Atmosphere ATBD"; String units "1"; String origname "cal_c_trans"; String fullnamepath "/profile_2/calibration/cal_c_trans"; String coordinates "profile_2_calibration_delta_time profile_2_calibration_latitude profile_2_calibration_longitude"; } profile_2_calibration_longitude { String contentType "modelResult"; String description "Start Longitude of calibration interval."; String long_name "Calibration interval start longitude"; String source "Atmosphere ATBD"; String standard_name "longitude"; String units "degrees_east"; Float64 valid_max 180.00000000000000; Float64 valid_min -180.00000000000000; String origname "longitude"; String fullnamepath "/profile_2/calibration/longitude"; String coordinates "profile_2_calibration_delta_time profile_2_calibration_latitude"; } profile_2_calibration_latitude_end { String contentType "modelResult"; String description "Stop Latitude of calibration interval."; String long_name "Calibration interval end latitude"; String source "Atmosphere ATBD"; String units "degrees_north"; Float64 valid_max 90.000000000000000; Float64 valid_min -90.000000000000000; String origname "latitude_end"; String fullnamepath "/profile_2/calibration/latitude_end"; String coordinates "profile_2_calibration_delta_time profile_2_calibration_latitude profile_2_calibration_longitude"; } profile_2_calibration_latitude { String contentType "modelResult"; String description "Start Latitude of calibration interval."; String long_name "Calibration interval start Latitude"; String source "Atmosphere ATBD"; String standard_name "latitude"; String units "degrees_north"; Float64 valid_max 90.000000000000000; Float64 valid_min -90.000000000000000; String origname "latitude"; String fullnamepath "/profile_2/calibration/latitude"; String coordinates "profile_2_calibration_delta_time profile_2_calibration_longitude"; } profile_2_calibration_cal_molec { Float32 _FillValue 3.402823466e+38; String contentType "modelResult"; String description "Molecular Backscatter value used to compute cal_const."; String long_name "Molecular Backscatter used"; String source "Atmosphere ATBD"; String units "m-1 sr-1"; String origname "cal_molec"; String fullnamepath "/profile_2/calibration/cal_molec"; String coordinates "profile_2_calibration_delta_time profile_2_calibration_latitude profile_2_calibration_longitude"; } profile_2_calibration_cal_c { Float32 _FillValue 3.402823466e+38; String contentType "modelResult"; String description "Calculated calibration constant (one per beam, Defined by Atmosphere ATBD eqn 3.27)"; String long_name "Calculated Calibration constant"; String source "Atmosphere ATBD"; String units "Photons*m^3 *sr / J"; String origname "cal_c"; String fullnamepath "/profile_2/calibration/cal_c"; String coordinates "profile_2_calibration_delta_time profile_2_calibration_latitude profile_2_calibration_longitude"; } profile_2_calibration_cal_con { Int32 _FillValue 2147483647; String contentType "modelResult"; String description "Calibration Confidence"; String long_name "Calibration Confidence"; String source "Atmosphere ATBD"; String units "1"; String origname "cal_con"; String fullnamepath "/profile_2/calibration/cal_con"; String coordinates "profile_2_calibration_delta_time profile_2_calibration_latitude profile_2_calibration_longitude"; } profile_2_calibration_cal_nrb { Float32 _FillValue 3.402823466e+38; String contentType "modelResult"; String description "NRB value used to compute cal_const."; String long_name "NRB value used"; String source "Atmosphere ATBD"; String units "1"; String origname "cal_nrb"; String fullnamepath "/profile_2/calibration/cal_nrb"; String coordinates "profile_2_calibration_delta_time profile_2_calibration_latitude profile_2_calibration_longitude"; } profile_2_calibration_longitude_end { String contentType "modelResult"; String description "Stop Longitude of calibration interval."; String long_name "Calibration interval end longitude"; String source "Atmosphere ATBD"; String units "degrees_east"; Float64 valid_max 180.00000000000000; Float64 valid_min -180.00000000000000; String origname "longitude_end"; String fullnamepath "/profile_2/calibration/longitude_end"; String coordinates "profile_2_calibration_delta_time profile_2_calibration_latitude profile_2_calibration_longitude"; } profile_2_segment_id { String contentType "referenceInformation"; String description "A 7 digit number identifiying the along-track geolocation segment number. These are sequential, starting with 1 for the first segment after an ascending equatorial crossing node."; String long_name "along-track segment ID number."; String source "ATL03 ATBD, Section 3.1"; String units "1"; String origname "segment_id"; String fullnamepath "/profile_2/segment_id"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_surface_bin { Int32 _FillValue 2147483647; String contentType "modelResult"; String description "Vertially aligned, NRB bin number of the detected surface return."; String long_name "Surface bin"; String source "Atmosphere ATBD section 3.3.5"; String units "1"; String origname "surface_bin"; String fullnamepath "/profile_2/surface_bin"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_solar_elevation { String contentType "referenceInformation"; String description "Solar Angle above or below the plane tangent to the ellipsoid surface at the laser spot. Positive values mean the sun is above the horizon, while negative values mean it is below the horizon. The effect of atmospheric refraction is not included. This is a low precision value, with approximately TBD degree accuracy."; String long_name "solar elevation"; String source "ATL03g ATBD"; String units "degrees"; String origname "solar_elevation"; String fullnamepath "/profile_2/solar_elevation"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_sig_count_hi { String contentType "referenceInformation"; String description "Count of high-confidence signal photons"; String long_name "Count of Signa Heightsl - High"; String source "ATL03 ATBD, Section 5"; String units "counts"; String origname "sig_count_hi"; String fullnamepath "/profile_2/sig_count_hi"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_dtime_fac2 { Float32 _FillValue 3.402823466e+38; String contentType "modelResult"; String description "Dead time correction factor for surface signal computed from ATBD equation 2.1."; String long_name "dead_time_factor2"; String source "Atmosphere ATBD"; String units "1"; String origname "dtime_fac2"; String fullnamepath "/profile_2/dtime_fac2"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_prof_dist_x { String contentType "referenceInformation"; String description "Along-track distance from the equator crossing."; String long_name "Along Track Distance"; String source "ATL03g ATBD, Section 3.4"; String units "meters"; String origname "prof_dist_x"; String fullnamepath "/profile_2/prof_dist_x"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_backg_std_dev2 { String contentType "modelResult"; String description "Background standard deviation from the selected method used (Sstd2 Defined in Atmosphere ATBD section 2.3.2)"; String long_name "Background standard deviation 2"; String source "Atmosphere ATBD section 3.3.4"; String units "counts"; String origname "backg_std_dev2"; String fullnamepath "/profile_2/backg_std_dev2"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_backg_method2 { String contentType "modelResult"; String description "Background from method 2 in photons/bin. (pb2 Defined in Atmosphere ATBD section 2.3.2)"; String long_name "Background method 2"; String source "Atmosphere ATBD section 3.3.4"; String units "counts"; String origname "backg_method2"; String fullnamepath "/profile_2/backg_method2"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_pce_mframe_cnt { String contentType "referenceInformation"; String description "Major Frame Counter - The major frame counter is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID"; String long_name "PCE Major frame counter"; String source "ATL02"; String units "counts"; String origname "pce_mframe_cnt"; String fullnamepath "/profile_2/pce_mframe_cnt"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_sc_alt { String contentType "physicalMeasurement"; String description "Height of the spacecraft above the WGS84 ellipsoid."; String long_name "Altitude"; String source "ATL03g ATBD, Section 3.4"; String units "meters"; String origname "sc_alt"; String fullnamepath "/profile_2/sc_alt"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_cloud_fold_flag { Int16 _FillValue 127; String contentType "modelResult"; String description "Flag that indicates this profile likely contains cloud signal folded down from above 15 km to the last 2-3 km of the profile. See ATBD Table 3.9 for detailed flag value meanings"; String flag_meanings "no_folding goes5_indicates profile_indicates both_indicate"; Int16 flag_values 0, 1, 2, 3; String long_name "Cloud Folding Flag"; String source "Atmosphere ATBD"; String units "1"; Int16 valid_max 3; Int16 valid_min 0; String origname "cloud_fold_flag"; String fullnamepath "/profile_2/cloud_fold_flag"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_sig_h_sdev_low { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "SDev of the heights of low-confidence signal photons"; String long_name "SDev of Signal Heights -Low"; String source "ATL03 ATBD, Section 5"; String units "meters"; String origname "sig_h_sdev_low"; String fullnamepath "/profile_2/sig_h_sdev_low"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_sig_h_mean_low { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "Mean height of low-confidence signal photons"; String long_name "Mean of Signal Heights - Low"; String source "ATL03 ATBD, Section 5"; String units "meters"; String origname "sig_h_mean_low"; String fullnamepath "/profile_2/sig_h_mean_low"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_sig_h_sdev_med { Float32 _FillValue 3.402823466e+38; String contentType "referenceInformation"; String description "SDev of the heights of medium-confidence signal photons"; String long_name "SDev of Signa Heights -Med"; String source "ATL03 ATBD, Section 5"; String units "meters"; String origname "sig_h_sdev_med"; String fullnamepath "/profile_2/sig_h_sdev_med"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_nrb_bot_bin { Int32 _FillValue 2147483647; String contentType "modelResult"; String description "The ending (bottom) bin number within the 20 to -1 km vertically aligned profile where data are valid. Bin number starts at 1."; String long_name "NRB Profile bottom valid bin"; String source "Atmosphere ATBD section 2.3"; String units "1"; String origname "nrb_bot_bin"; String fullnamepath "/profile_2/nrb_bot_bin"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_surface_sig { String contentType "modelResult"; String description "Number of photons in the detected surface bin."; String long_name "Surface signal count"; String source "Atmosphere ATBD section 3.3.5"; String units "counts"; String origname "surface_sig"; String fullnamepath "/profile_2/surface_sig"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } profile_2_nrb_top_bin { Int32 _FillValue 2147483647; String contentType "modelResult"; String description "The starting (top) bin number within the 20 to -1 km vertically aligned profile where data are valid. Bin number starts at 1."; String long_name "NRB Profile top valid bin"; String source "Atmosphere ATBD section 2.3"; String units "counts"; String origname "nrb_top_bin"; String fullnamepath "/profile_2/nrb_top_bin"; String coordinates "profile_2_delta_time profile_2_latitude profile_2_longitude"; } ancillary_data_release { String contentType "auxiliaryInformation"; String 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."; String long_name "Release Number"; String source "Operations"; String units "1"; String origname "release"; String fullnamepath "/ancillary_data/release"; } ancillary_data_end_geoseg { String contentType "auxiliaryInformation"; String 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."; String long_name "Ending Geolocation Segment"; String source "Derived"; String units "1"; String origname "end_geoseg"; String fullnamepath "/ancillary_data/end_geoseg"; } ancillary_data_version { String contentType "auxiliaryInformation"; String 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."; String long_name "Version"; String source "Operations"; String units "1"; String origname "version"; String fullnamepath "/ancillary_data/version"; } ancillary_data_end_region { String contentType "auxiliaryInformation"; String 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."; String long_name "Ending Region"; String source "Derived"; String units "1"; String origname "end_region"; String fullnamepath "/ancillary_data/end_region"; } ancillary_data_atmosphere_cal_twilight_pce2 { String contentType "auxiliaryInformation"; String description "Twilight calibration constant for pce2 in method 2"; String long_name "Twilight PCE2 CAL"; String source "Control"; String units "1"; String origname "cal_twilight_pce2"; String fullnamepath "/ancillary_data/atmosphere/cal_twilight_pce2"; } ancillary_data_atmosphere_max_calib_day { String contentType "auxiliaryInformation"; String description "Maximum calculated calibration value allowed for daytime for each pce for calibration method 3"; String long_name "Maximum Daytime Calibration"; String source "Atmosphere ATBD"; String units "Photons*m3sr/J"; String origname "max_calib_day"; String fullnamepath "/ancillary_data/atmosphere/max_calib_day"; } ancillary_data_atmosphere_cal_atm_trans { String contentType "auxiliaryInformation"; String description "Particulate transmission from top of atmosphere to the calibration height (13 km)"; String long_name "Cal Atm Trans"; String source "Atmosphere ATBD section 2"; String units "1"; String origname "cal_atm_trans"; String fullnamepath "/ancillary_data/atmosphere/cal_atm_trans"; } ancillary_data_atmosphere_default_nrb_saa { String contentType "auxiliaryInformation"; String description "Default value for NRB used to replace NRB values that are out of range when in the South Atlantic Anomaly during nighttime for each pce for calibration method 3"; String long_name "Default NRB in SAA"; String source "Atmosphere ATBD"; String units "Photons m2/Joule"; String origname "default_nrb_saa"; String fullnamepath "/ancillary_data/atmosphere/default_nrb_saa"; } ancillary_data_atmosphere_saa_scale_fac { String contentType "auxiliaryInformation"; String description "Scale factor for computing the background in method 1 within the south Atlantic anomaly box"; String long_name "SAA Scale Factor"; String source "Atmosphere ATBD"; String units "1"; String origname "saa_scale_fac"; String fullnamepath "/ancillary_data/atmosphere/saa_scale_fac"; } ancillary_data_atmosphere_back_f2 { String contentType "auxiliaryInformation"; String description "Scaling factor in Method 2 background computation"; String long_name "Background Fact method2"; String source "Atmosphere ATBD section 3.3.4"; String units "1"; String origname "back_f2"; String fullnamepath "/ancillary_data/atmosphere/back_f2"; } ancillary_data_atmosphere_cal_bot_ht { String contentType "auxiliaryInformation"; String description "Bottom height of the calibration zone"; String long_name "Bottom height of Cal zone"; String source "Atmosphere ATBD section 2"; String units "meters"; String origname "cal_bot_ht"; String fullnamepath "/ancillary_data/atmosphere/cal_bot_ht"; } ancillary_data_atmosphere_min_calib_day { String contentType "auxiliaryInformation"; String description "Minimum calculated calibration allowed for daytime for each pce for calibration method 3"; String long_name "Minimum Daytime Calibration"; String source "Atmosphere ATBD"; String units "Photons*m3sr/J"; String origname "min_calib_day"; String fullnamepath "/ancillary_data/atmosphere/min_calib_day"; } ancillary_data_atmosphere_fold_thresh_night { String contentType "auxiliaryInformation"; String source "Atmosphere ATBD"; String description "Raw signal level above which the mean of the last fold_nbins indicates the presence of cloud folding for nighttime data"; String long_name "Nighttime Folding Threshold"; String units "photons/bin"; String origname "fold_thresh_night"; String fullnamepath "/ancillary_data/atmosphere/fold_thresh_night"; } ancillary_data_atmosphere_cal_cloud_thres { String contentType "auxiliaryInformation"; String description "Threshold for excluding NRB data in calibration zone."; String long_name "Cal Cloud Threshold"; String source "Atmosphere ATBD section 2"; String units "counts"; String origname "cal_cloud_thres"; String fullnamepath "/ancillary_data/atmosphere/cal_cloud_thres"; } ancillary_data_atmosphere_max_calib_twilight { String contentType "auxiliaryInformation"; String description "Maximum calculated calibration value allowed for twilight for each pce for calibration method 3"; String long_name "Maximum Twilight Calibration"; String source "Atmosphere ATBD"; String units "Photons*m3sr/J"; String origname "max_calib_twilight"; String fullnamepath "/ancillary_data/atmosphere/max_calib_twilight"; } ancillary_data_atmosphere_cal_solar_elev_max { String contentType "auxiliaryInformation"; String description "Maximum solar elevation angle in calibration method 2."; String long_name "Maximim Solar Elevation"; String source "Control"; String units "degrees"; String origname "cal_solar_elev_max"; String fullnamepath "/ancillary_data/atmosphere/cal_solar_elev_max"; } ancillary_data_atmosphere_backg_twilight_scale_factor { String contentType "auxiliaryInformation"; String units "1"; String description "Background twilight scaling factor in Method 1 bkgd comp"; String long_name "Background twilight scaling factor"; String source "Atmosphere ATBD section 3.3.4"; String origname "backg_twilight_scale_factor"; String fullnamepath "/ancillary_data/atmosphere/backg_twilight_scale_factor"; } ancillary_data_atmosphere_backg_response_time { String contentType "auxiliaryInformation"; String description "Background response time in Method 1 bkgd comp"; String long_name "Background response time"; String source "Atmosphere ATBD section 3.3.4"; String units "1"; String origname "backg_response_time"; String fullnamepath "/ancillary_data/atmosphere/backg_response_time"; } ancillary_data_atmosphere_alpha_night_pce1 { String contentType "auxiliaryInformation"; String units "1"; String description "Molecular Folding Scaling Factor (PCE1/night)"; String long_name "Molecular Folding Scaling Factor"; String source "Atmosphere ATBD, part 1, section 3.3.2"; String origname "alpha_night_pce1"; String fullnamepath "/ancillary_data/atmosphere/alpha_night_pce1"; } ancillary_data_atmosphere_va_top_ht { String contentType "auxiliaryInformation"; String description "Top height of vertically aligned profile"; String long_name "Top height of vertically aligned profile"; String source "Atmosphere ATBD"; String units "meters"; String origname "va_top_ht"; String fullnamepath "/ancillary_data/atmosphere/va_top_ht"; } ancillary_data_atmosphere_cal_top_ht { String contentType "auxiliaryInformation"; String description "Top height of the calibration zone"; String long_name "Top height of Cal zone"; String source "Atmosphere ATBD section 2"; String units "meters"; String origname "cal_top_ht"; String fullnamepath "/ancillary_data/atmosphere/cal_top_ht"; } ancillary_data_atmosphere_grd_thres_sfac1 { String contentType "auxiliaryInformation"; String description "Ground detection signal factor 1"; String long_name "grd_thres_sfac1"; String source "Atmosphere ATBD Section 3.3.5"; String units "1"; String origname "grd_thres_sfac1"; String fullnamepath "/ancillary_data/atmosphere/grd_thres_sfac1"; } ancillary_data_atmosphere_min_nrb_twilight { String contentType "auxiliaryInformation"; String description "Minimum twilight NRB accepted for filtered NRB data for each pce for calibration method 3"; String long_name "Minimum Twilight NRB"; String source "Atmosphere ATBD"; String units "Photons m2/Joule"; String origname "min_nrb_twilight"; String fullnamepath "/ancillary_data/atmosphere/min_nrb_twilight"; } ancillary_data_atmosphere_saa_latmax { String contentType "auxiliaryInformation"; String description "Latitude maximum of box that encompasses the area affected by the South Atlantic Anomaly (SAA)"; String long_name "SAA Maximum Latitude"; String source "Atmosphere ATBD"; String units "degrees_north"; String origname "saa_latmax"; String fullnamepath "/ancillary_data/atmosphere/saa_latmax"; } ancillary_data_atmosphere_max_photon { String contentType "auxiliaryInformation"; String description "The photon level that the average of bin 50 to 200 of the raw profiles must exceed to be categorized as bad data."; String long_name "1"; String source "Atmosphere ATBD"; String units "photons/bin"; String origname "max_photon"; String fullnamepath "/ancillary_data/atmosphere/max_photon"; } ancillary_data_atmosphere_cal_day_pce1 { String contentType "auxiliaryInformation"; String description "Daytime calibration constant for pce1 in method 2"; String long_name "Daytime PCE1 CAL"; String source "Control"; String units "1"; String origname "cal_day_pce1"; String fullnamepath "/ancillary_data/atmosphere/cal_day_pce1"; } ancillary_data_atmosphere_cal_integ_time { String contentType "auxiliaryInformation"; String description "Calibration integration time"; String long_name "Cal Integ Time"; String source "Atmosphere ATBD section 2"; String units "seconds"; String origname "cal_integ_time"; String fullnamepath "/ancillary_data/atmosphere/cal_integ_time"; } ancillary_data_atmosphere_ozone_const { String contentType "auxiliaryInformation"; String description "Ozone column density constant"; String long_name "Ozone column density constant"; String source "Atmosphere ATBD"; String units "1"; String origname "ozone_const"; String fullnamepath "/ancillary_data/atmosphere/ozone_const"; } ancillary_data_atmosphere_cal_day_pce3 { String contentType "auxiliaryInformation"; String description "Daytime calibration constant for pce3 in method 2"; String long_name "Daytime PCE3 CAL"; String source "Control"; String units "1"; String origname "cal_day_pce3"; String fullnamepath "/ancillary_data/atmosphere/cal_day_pce3"; } ancillary_data_atmosphere_alpha_day_pce1 { String contentType "auxiliaryInformation"; String description "Molecular Folding Scaling Factor (PCE1/day)"; String long_name "Molecular Folding Scaling Factor"; String source "Atmosphere ATBD, part 1, section 3.3.2"; String units "1"; String origname "alpha_day_pce1"; String fullnamepath "/ancillary_data/atmosphere/alpha_day_pce1"; } ancillary_data_atmosphere_backg_night_scale_factor { String contentType "auxiliaryInformation"; String description "Background nighttime scaling factor in Method 1 bkgd comp"; String long_name "Background nighttime scaling factor"; String source "Atmosphere ATBD section 3.3.4"; String units "1"; String origname "backg_night_scale_factor"; String fullnamepath "/ancillary_data/atmosphere/backg_night_scale_factor"; } ancillary_data_atmosphere_num_va_bins { String contentType "auxiliaryInformation"; String description "Number of vertically aligned bins"; String long_name "Number of vertically aligned bins"; String source "Atmosphere ATBD"; String units "counts"; String origname "num_va_bins"; String fullnamepath "/ancillary_data/atmosphere/num_va_bins"; } ancillary_data_atmosphere_cal_twilight_pce1 { String contentType "auxiliaryInformation"; String description "Twilight calibration constant for pce1 in method 2"; String long_name "Twilight PCE1 CAL"; String source "Control"; String units "1"; String origname "cal_twilight_pce1"; String fullnamepath "/ancillary_data/atmosphere/cal_twilight_pce1"; } ancillary_data_atmosphere_atlas_atm_shot_sum_50hz { String contentType "auxiliaryInformation"; String description "Number of shots summed to compute an ATM histogram at 50 hz (diagnostic)"; String long_name "Number of shots at 50hz"; String source "Atmosphere ATBD"; String units "counts"; String origname "atlas_atm_shot_sum_50hz"; String fullnamepath "/ancillary_data/atmosphere/atlas_atm_shot_sum_50hz"; } ancillary_data_atmosphere_backg_min_solar_elev { String contentType "auxiliaryInformation"; String description "Background minimum solar elevation angle in Method 1 bkgd comp"; String long_name "Background minimum solar elevation angle"; String source "Atmosphere ATBD section 3.3.4"; String units "degrees"; String origname "backg_min_solar_elev"; String fullnamepath "/ancillary_data/atmosphere/backg_min_solar_elev"; } ancillary_data_atmosphere_cal_solar_elev_min { String contentType "auxiliaryInformation"; String description "Minimum solar elevation angle in calibration method 2."; String long_name "Minimum Solar Elevation for CAL"; String source "Control"; String units "degrees"; String origname "cal_solar_elev_min"; String fullnamepath "/ancillary_data/atmosphere/cal_solar_elev_min"; } ancillary_data_atmosphere_atlas_n_atm_hist_bins { String contentType "auxiliaryInformation"; String description "Number of ATM histogram bins"; String long_name "Number of histogram bins"; String source "Atmosphere ATBD"; String units "counts"; String origname "atlas_n_atm_hist_bins"; String fullnamepath "/ancillary_data/atmosphere/atlas_n_atm_hist_bins"; } ancillary_data_atmosphere_gas_const_r { String contentType "auxiliaryInformation"; String description "Ideal gas constant (R)"; String long_name "Ideal gas constant R"; String source "Globals"; String units "1"; String origname "gas_const_r"; String fullnamepath "/ancillary_data/atmosphere/gas_const_r"; } ancillary_data_atmosphere_deg2rad { String contentType "auxiliaryInformation"; String description "Degrees to radians conversion factor"; String long_name "Degree to radians conversion"; String source "Globals"; String units "1"; String origname "deg2rad"; String fullnamepath "/ancillary_data/atmosphere/deg2rad"; } ancillary_data_atmosphere_atlas_atm_hist_binsize { String contentType "auxiliaryInformation"; String description "Nominal size of each ATM histogram bin, in meters"; String long_name "Histogram bin size (m)"; String source "Atmosphere ATBD"; String units "meters"; String origname "atlas_atm_hist_binsize"; String fullnamepath "/ancillary_data/atmosphere/atlas_atm_hist_binsize"; } ancillary_data_atmosphere_backg_night_bkgd { String contentType "auxiliaryInformation"; String description "Background nighttime background in Method 1 bkgd comp"; String long_name "Background nighttime background"; String source "Atmosphere ATBD section 3.3.4"; String units "1"; String origname "backg_night_bkgd"; String fullnamepath "/ancillary_data/atmosphere/backg_night_bkgd"; } ancillary_data_atmosphere_alpha_night_pce3 { String contentType "auxiliaryInformation"; String units "1"; String description "Molecular Folding Scaling Factor (PCE3/night)"; String long_name "Molecular Folding Scaling Factor"; String source "Atmosphere ATBD, part 1, section 3.3.2"; String origname "alpha_night_pce3"; String fullnamepath "/ancillary_data/atmosphere/alpha_night_pce3"; } ancillary_data_atmosphere_fold_nbins { String contentType "auxiliaryInformation"; String description "Number of bins starting from end of raw profile to compute mean of signal to test for presence of cloud folding"; String long_name "1"; String source "Atmosphere ATBD"; String units "bins"; String origname "fold_nbins"; String fullnamepath "/ancillary_data/atmosphere/fold_nbins"; } ancillary_data_atmosphere_cal_twilight_pce3 { String contentType "auxiliaryInformation"; String description "Twilight calibration constant for pce3 in method 2"; String long_name "Twilight PCE3 CAL"; String source "Control"; String units "1"; String origname "cal_twilight_pce3"; String fullnamepath "/ancillary_data/atmosphere/cal_twilight_pce3"; } ancillary_data_atmosphere_max_nrb_twilight { String contentType "auxiliaryInformation"; String description "Maximum twilight NRB accepted for filtered NRB array for each pce for calibration method 3"; String long_name "Maximum Twilight NRB"; String source "Atmosphere ATBD"; String units "Photons m2/Joule"; String origname "max_nrb_twilight"; String fullnamepath "/ancillary_data/atmosphere/max_nrb_twilight"; } ancillary_data_atmosphere_cal_night_pce3 { String contentType "auxiliaryInformation"; String description "Nighttime calibration constant for pce3 in method 2"; String long_name "CAL Night PCE3"; String source "Control"; String units "1"; String origname "cal_night_pce3"; String fullnamepath "/ancillary_data/atmosphere/cal_night_pce3"; } ancillary_data_atmosphere_king_fact { String contentType "auxiliaryInformation"; String description "King factor for molecular transmission."; String long_name "KING factor"; String source "Atmosphere ATBD"; String units "1"; String origname "king_fact"; String fullnamepath "/ancillary_data/atmosphere/king_fact"; } ancillary_data_atmosphere_atlas_atm_hist_binsize_s { String contentType "auxiliaryInformation"; String description "Nominal size of each ATM histogram bin, in seconds"; String long_name "Histogram bin size (s)"; String source "Atmosphere ATBD"; String units "seconds"; String origname "atlas_atm_hist_binsize_s"; String fullnamepath "/ancillary_data/atmosphere/atlas_atm_hist_binsize_s"; } ancillary_data_atmosphere_cal_select { String contentType "auxiliaryInformation"; String description "Calibration algorithm used."; String flag_meanings "method1 method2 method3"; Int32 flag_values 1, 2, 3; String long_name "Calibration Algorithm Used"; String source "Control"; String units "1"; Int32 valid_max 3; Int32 valid_min 1; String origname "cal_select"; String fullnamepath "/ancillary_data/atmosphere/cal_select"; } ancillary_data_atmosphere_min_nrb_night { String contentType "auxiliaryInformation"; String description "Minimum nighttime NRB accepted for filtered NRB data for each pce for calibration method 3"; String long_name "Minimum Nighttime NRB"; String source "Atmosphere ATBD"; String units "Photons m2/Joule"; String origname "min_nrb_night"; String fullnamepath "/ancillary_data/atmosphere/min_nrb_night"; } ancillary_data_atmosphere_saa_lonmax { String contentType "auxiliaryInformation"; String description "Longitude maximum of box that encompasses the area affected by the South Atlantic Anomaly (SAA)"; String long_name "SAA Maximum Longitude"; String source "Atmosphere ATBD"; String units "degrees_east"; String origname "saa_lonmax"; String fullnamepath "/ancillary_data/atmosphere/saa_lonmax"; } ancillary_data_atmosphere_fold_thresh_day { String contentType "auxiliaryInformation"; String description "Raw signal level above which the mean of the last fold_nbins indicates the presence of cloud folding for daytime data"; String long_name "Daytime Folding Threshold"; String source "Atmosphere ATBD"; String units "photons/bin"; String origname "fold_thresh_day"; String fullnamepath "/ancillary_data/atmosphere/fold_thresh_day"; } ancillary_data_atmosphere_cal_default { String contentType "auxiliaryInformation"; String description "Default atmosphere calibration constant. Used by default when no calibration data have been computed for an ATL04 granule."; String long_name "Default CAL Constant"; String source "Atmosphere ATBD section 2"; String units "Photons*m^3 *sr / J"; String origname "cal_default"; String fullnamepath "/ancillary_data/atmosphere/cal_default"; } ancillary_data_atmosphere_atm_tep_width { String contentType "auxiliaryInformation"; String description "The width of the TEP removal window."; String long_name "TEP Window Width"; String source "Atmosphere ATBD"; String units "sq meters"; String origname "atm_tep_width"; String fullnamepath "/ancillary_data/atmosphere/atm_tep_width"; } ancillary_data_atmosphere_dtime_select { String contentType "auxiliaryInformation"; String description "Deadtime factor used."; String flag_meanings "dtime_fact1 dtime_fact2"; Int32 flag_values 1, 2; String long_name "dead time factor used"; String source "Control"; String units "1"; Int32 valid_max 2; Int32 valid_min 1; String origname "dtime_select"; String fullnamepath "/ancillary_data/atmosphere/dtime_select"; } ancillary_data_atmosphere_min_nrb_day { String contentType "auxiliaryInformation"; String description "Minimum daytime NRB accepted for filtered NRB data for each pce for calibration method 3"; String long_name "Minimum Daytime NRB"; String source "Atmosphere ATBD"; String units "Photons m2/Joule"; String origname "min_nrb_day"; String fullnamepath "/ancillary_data/atmosphere/min_nrb_day"; } ancillary_data_atmosphere_boltzmann_const { String contentType "auxiliaryInformation"; String description "Boltzmann constant"; String long_name "Boltzmann Constant"; String source "Atmosphere ATBD section 2"; String units "erg/K"; String origname "boltzmann_const"; String fullnamepath "/ancillary_data/atmosphere/boltzmann_const"; } ancillary_data_atmosphere_atm_laser_wavelength_nm { String contentType "auxiliaryInformation"; String description "ATLAS Laser wavelength, in nanometers"; String long_name "Laser Wavelength (nm)"; String source "Atmosphere ATBD"; String units "nm"; String origname "atm_laser_wavelength_nm"; String fullnamepath "/ancillary_data/atmosphere/atm_laser_wavelength_nm"; } ancillary_data_atmosphere_ht_min { String contentType "auxiliaryInformation"; String description "Minimum height to use in ATM profile"; String long_name "Minimum height to use in ATM profile"; String source "Atmosphere ATBD"; String units "meters"; String origname "ht_min"; String fullnamepath "/ancillary_data/atmosphere/ht_min"; } ancillary_data_atmosphere_atlas_n_pce { String contentType "auxiliaryInformation"; String description "Number of ATLAS PCE boards"; String long_name "Number of ATLAS PCEs"; String source "Atmosphere ATBD"; String units "1"; String origname "atlas_n_pce"; String fullnamepath "/ancillary_data/atmosphere/atlas_n_pce"; } ancillary_data_atmosphere_cal_night_pce2 { String contentType "auxiliaryInformation"; String source "Control"; String description "Nighttime calibration constant for pce2 in method 2"; String long_name "CAL Night PCE2"; String units "1"; String origname "cal_night_pce2"; String fullnamepath "/ancillary_data/atmosphere/cal_night_pce2"; } ancillary_data_atmosphere_backg_day_scale_factor2 { String contentType "auxiliaryInformation"; String description "Background daytime scaling factor 2 in Method 1 bkgd comp"; String long_name "Background daytime scaling factor 2"; String source "Atmosphere ATBD section 3.3.4"; String units "1"; String origname "backg_day_scale_factor2"; String fullnamepath "/ancillary_data/atmosphere/backg_day_scale_factor2"; } ancillary_data_atmosphere_num_molec_bins { String contentType "auxiliaryInformation"; String description "Number of bins in molecular profile"; String long_name "Number of bins in molecular profile"; String source "Atmosphere ATBD"; String units "counts"; String origname "num_molec_bins"; String fullnamepath "/ancillary_data/atmosphere/num_molec_bins"; } ancillary_data_atmosphere_molec_top_ht { String contentType "auxiliaryInformation"; String description "Top height of molecular profile."; String long_name "Top height of molecular profile"; String source "Atmosphere ATBD"; String units "meters"; String origname "molec_top_ht"; String fullnamepath "/ancillary_data/atmosphere/molec_top_ht"; } ancillary_data_atmosphere_alpha_twilight_pce2 { String contentType "auxiliaryInformation"; String units "1"; String description "Molecular Folding Scaling Factor (PCE2/twilight)"; String long_name "Molecular Folding Scaling Factor"; String source "Atmosphere ATBD, part 1, section 3.3.2"; String origname "alpha_twilight_pce2"; String fullnamepath "/ancillary_data/atmosphere/alpha_twilight_pce2"; } ancillary_data_atmosphere_aer_scat_rat { String contentType "auxiliaryInformation"; String description "Aerosol Scattering Ratio in the calibration zone (11"; String long_name "Aerosol Scattering Ratio"; String source "Atmosphere ATBD"; String units "1"; String origname "aer_scat_rat"; String fullnamepath "/ancillary_data/atmosphere/aer_scat_rat"; } ancillary_data_atmosphere_atm_processing_interval { String contentType "auxiliaryInformation"; String description "The number of seconds of ATM data processed in one chunk."; String long_name "Seconds of ATM data processed in one chunk."; String source "Control"; String units "seconds"; String origname "atm_processing_interval"; String fullnamepath "/ancillary_data/atmosphere/atm_processing_interval"; } ancillary_data_atmosphere_backg_max_solar_elev { String contentType "auxiliaryInformation"; String description "Background maximum solar elevation angle in Method 1 bkgd comp"; String long_name "Background maximum solar elevation angle"; String source "Atmosphere ATBD section 3.3.4"; String units "degrees"; String origname "backg_max_solar_elev"; String fullnamepath "/ancillary_data/atmosphere/backg_max_solar_elev"; } ancillary_data_atmosphere_atm_tep_start { String contentType "auxiliaryInformation"; String description "The start time of the TEP removal window."; String long_name "TEP Window Start"; String source "Atmosphere ATBD"; String units "ns"; String origname "atm_tep_start"; String fullnamepath "/ancillary_data/atmosphere/atm_tep_start"; } ancillary_data_atmosphere_saa_latmin { String contentType "auxiliaryInformation"; String source "Atmosphere ATBD"; String description "Latitude minimum of box that encompasses the area affected by the South Atlantic Anomaly (SAA)"; String long_name "SAA Minimum Latitude"; String units "degrees_north"; String origname "saa_latmin"; String fullnamepath "/ancillary_data/atmosphere/saa_latmin"; } ancillary_data_atmosphere_max_nrb_night { String contentType "auxiliaryInformation"; String description "Maximum nighttime NRB accepted for filtered NRB array for each pce for calibration method 3"; String long_name "Maximum Nighttime NRB"; String source "Atmosphere ATBD"; String units "Photons m2/Joule"; String origname "max_nrb_night"; String fullnamepath "/ancillary_data/atmosphere/max_nrb_night"; } ancillary_data_atmosphere_receiver_optical_throughput { String contentType "auxiliaryInformation"; String description "Nominal Receiver Optics Throughput"; String long_name "Receiver Optics Throughput"; String source "Atmosphere ATBD"; String units "1"; String origname "receiver_optical_throughput"; String fullnamepath "/ancillary_data/atmosphere/receiver_optical_throughput"; } ancillary_data_atmosphere_default_nrb_twilight { String contentType "auxiliaryInformation"; String description "Default value for twilight NRB - used to replace NRB values that are out of range for each pce for calibration method 3"; String long_name "Twilight NRB Defaults"; String source "Atmosphere ATBD"; String units "Photons m2/Joule"; String origname "default_nrb_twilight"; String fullnamepath "/ancillary_data/atmosphere/default_nrb_twilight"; } ancillary_data_atmosphere_atlas_atm_shot_sum_25hz { String contentType "auxiliaryInformation"; String description "Number of shots summed to compute an ATM histogram at 25 hz (nominal)"; String long_name "Number of shots at 25hz"; String source "Atmosphere ATBD"; String units "counts"; String origname "atlas_atm_shot_sum_25hz"; String fullnamepath "/ancillary_data/atmosphere/atlas_atm_shot_sum_25hz"; } ancillary_data_atmosphere_saa_cal_fac { String contentType "auxiliaryInformation"; String description "Factor to multiply the calibration constants by when within the SAA and the solar elevation angle is < calib_solar_elev_max in calibration method 3"; String long_name "SAA Calibration Factor"; String source "Atmosphere ATBD"; String units "1"; String origname "saa_cal_fac"; String fullnamepath "/ancillary_data/atmosphere/saa_cal_fac"; } ancillary_data_atmosphere_saa_lonmin { String contentType "auxiliaryInformation"; String description "Longitude minimum of box that encompasses the area affected by the South Atlantic Anomaly (SAA)"; String long_name "SAA Minimum Longitude"; String source "Atmosphere ATBD"; String units "degrees_east"; String origname "saa_lonmin"; String fullnamepath "/ancillary_data/atmosphere/saa_lonmin"; } ancillary_data_atmosphere_telescope_area { String contentType "auxiliaryInformation"; String description "Effective collection area of telescope (At)"; String long_name "Telescope Effective Area"; String source "Atmosphere ATBD"; String units "sq meters"; String origname "telescope_area"; String fullnamepath "/ancillary_data/atmosphere/telescope_area"; } ancillary_data_atmosphere_max_nrb_day { String contentType "auxiliaryInformation"; String description "Maximum daytime NRB accepted for filtered NRB data for each pce for calibration method 3"; String long_name "Maximum Daytime NRB"; String source "Atmosphere ATBD"; String units "Photons m2/Joule"; String origname "max_nrb_day"; String fullnamepath "/ancillary_data/atmosphere/max_nrb_day"; } ancillary_data_atmosphere_alpha_twilight_pce3 { String contentType "auxiliaryInformation"; String description "Molecular Folding Scaling Factor (PCE3/twilight)"; String long_name "Molecular Folding Scaling Factor"; String source "Atmosphere ATBD, part 1, section 3.3.2"; String units "1"; String origname "alpha_twilight_pce3"; String fullnamepath "/ancillary_data/atmosphere/alpha_twilight_pce3"; } ancillary_data_atmosphere_max_nrb_saa { String contentType "auxiliaryInformation"; String description "Maximum NRB accepted for filtered NRB data when in the South Atlantic Anomaly during nighttime for each pce for calibration method 3"; String long_name "Maximum NRB in SAA"; String source "Atmosphere ATBD"; String units "Photons m2/Joule"; String origname "max_nrb_saa"; String fullnamepath "/ancillary_data/atmosphere/max_nrb_saa"; } ancillary_data_atmosphere_chappius_coef { String contentType "auxiliaryInformation"; String description "Chappius ozone absorption coefficient"; String long_name "Chappius Coefficient"; String source "Atmosphere ATBD"; String units "1"; String origname "chappius_coef"; String fullnamepath "/ancillary_data/atmosphere/chappius_coef"; } ancillary_data_atmosphere_alpha_day_pce3 { String contentType "auxiliaryInformation"; String description "Molecular Folding Scaling Factor (PCE3/day)"; String long_name "Molecular Folding Scaling Factor"; String source "Atmosphere ATBD, part 1, section 3.3.2"; String units "1"; String origname "alpha_day_pce3"; String fullnamepath "/ancillary_data/atmosphere/alpha_day_pce3"; } ancillary_data_atmosphere_night_thresh_min { String contentType "auxiliaryInformation"; String description "The minimum number of photons within a 400 shot sum that must be present in order for the surface signal to be detected."; String long_name "Night threshold minimum"; String source "Atmosphere ATBD"; String units "1"; String origname "night_thresh_min"; String fullnamepath "/ancillary_data/atmosphere/night_thresh_min"; } ancillary_data_atmosphere_grd_thres_atl03 { String contentType "auxiliaryInformation"; String description "Threshold for Ground detection (photons/bin) when using ATL03-classified signal"; String long_name "Ground Threshold using ATL03 signal"; String source "Atmosphere ATBD section 2"; String units "photons/bin"; String origname "grd_thres_atl03"; String fullnamepath "/ancillary_data/atmosphere/grd_thres_atl03"; } ancillary_data_atmosphere_min_calib_night { String contentType "auxiliaryInformation"; String description "Minimum calculated calibration value allowed for nighttime for each pce for calibration method 3"; String long_name "Minimum Nighttime Calibration"; String source "Atmosphere ATBD"; String units "Photons*m3sr/J"; String origname "min_calib_night"; String fullnamepath "/ancillary_data/atmosphere/min_calib_night"; } ancillary_data_atmosphere_backg_day_scale_factor1 { String contentType "auxiliaryInformation"; String description "Background daytime scaling factor 1 in Method 1 bkgd comp"; String long_name "Background daytime scaling factor 1"; String source "Atmosphere ATBD section 3.3.4"; String units "1"; String origname "backg_day_scale_factor1"; String fullnamepath "/ancillary_data/atmosphere/backg_day_scale_factor1"; } ancillary_data_atmosphere_cal_scat_ratio { String contentType "auxiliaryInformation"; String description "Calibration Zone (13 to 11 km) aerosol scattering ratio"; String long_name "Cal Scat Ratio"; String source "Atmosphere ATBD section 2"; String units "1"; String origname "cal_scat_ratio"; String fullnamepath "/ancillary_data/atmosphere/cal_scat_ratio"; } ancillary_data_atmosphere_cal_day_pce2 { String contentType "auxiliaryInformation"; String description "Daytime calibration constant for pce2 in method 2"; String long_name "Daytime PCE2 CAL"; String source "Control"; String units "1"; String origname "cal_day_pce2"; String fullnamepath "/ancillary_data/atmosphere/cal_day_pce2"; } ancillary_data_atmosphere_planck_const { String contentType "auxiliaryInformation"; String description "Planck constant (h)"; String long_name "Planck constant (h)"; String source "Atmosphere ATBD section 2"; String units "Js"; String origname "planck_const"; String fullnamepath "/ancillary_data/atmosphere/planck_const"; } ancillary_data_atmosphere_backg_day_exp_factor { String contentType "auxiliaryInformation"; String description "Background daytime exponent factor in Method 1 bkgd comp"; String long_name "Background daytime exponent factor"; String source "Atmosphere ATBD section 3.3.4"; String units "1"; String origname "backg_day_exp_factor"; String fullnamepath "/ancillary_data/atmosphere/backg_day_exp_factor"; } ancillary_data_atmosphere_backg_nseg { String contentType "auxiliaryInformation"; String description "Number of background segments in method 1"; String long_name "Number of background segments in method 1"; String source "Atmosphere ATBD section 3.3.4"; String units "counts"; String origname "backg_nseg"; String fullnamepath "/ancillary_data/atmosphere/backg_nseg"; } ancillary_data_atmosphere_grd_thres_sfac2 { String contentType "auxiliaryInformation"; String description "Ground detection signal factor 2"; String long_name "grd_thres_sfac2"; String source "Atmosphere ATBD Section 3.3.5"; String units "1"; String origname "grd_thres_sfac2"; String fullnamepath "/ancillary_data/atmosphere/grd_thres_sfac2"; } ancillary_data_atmosphere_nrb_average_period { String contentType "auxiliaryInformation"; String source "Atmosphere ATBD"; String description "Number of seconds to average the smoothed and filtered NRB array before computing the calibration constant for calibration method 3"; String long_name "NRB Averaging Period"; String units "seconds"; String origname "nrb_average_period"; String fullnamepath "/ancillary_data/atmosphere/nrb_average_period"; } ancillary_data_atmosphere_cal_night_pce1 { String contentType "auxiliaryInformation"; String description "Nighttime calibration constant for pce1 in method 2"; String long_name "CAL Night PCE1"; String source "Control"; String units "1"; String origname "cal_night_pce1"; String fullnamepath "/ancillary_data/atmosphere/cal_night_pce1"; } ancillary_data_atmosphere_detector_efficiency { String contentType "auxiliaryInformation"; String description "Detector quantum efficiency (Qe)"; String long_name "Detector Quantum Efficiency"; String source "Atmosphere ATBD"; String units "1"; String origname "detector_efficiency"; String fullnamepath "/ancillary_data/atmosphere/detector_efficiency"; } ancillary_data_atmosphere_alpha_twilight_pce1 { String contentType "auxiliaryInformation"; String units "1"; String description "Molecular Folding Scaling Factor (PCE1/twilight)"; String long_name "Molecular Folding Scaling Factor"; String source "Atmosphere ATBD, part 1, section 3.3.2"; String origname "alpha_twilight_pce1"; String fullnamepath "/ancillary_data/atmosphere/alpha_twilight_pce1"; } ancillary_data_atmosphere_atm_pulse_ns { String contentType "auxiliaryInformation"; String description "The time between ATLAS pulses."; String long_name "Pulse Time"; String source "Atmosphere ATBD"; String units "sq meters"; String origname "atm_pulse_ns"; String fullnamepath "/ancillary_data/atmosphere/atm_pulse_ns"; } ancillary_data_atmosphere_speed_of_light { String contentType "auxiliaryInformation"; String description "Speed of light (c)"; String long_name "Speed of light (c)"; String source "Globals"; String units "meters/second"; String origname "speed_of_light"; String fullnamepath "/ancillary_data/atmosphere/speed_of_light"; } ancillary_data_atmosphere_backg_select { String contentType "auxiliaryInformation"; String description "The background method used in calculation of NRB"; String flag_meanings "method1 method2 method3"; Int32 flag_values 1, 2, 3; String long_name "background method used"; String source "Atmosphere ATBD section 3.3.4"; String units "1"; Int32 valid_max 3; Int32 valid_min 1; String origname "backg_select"; String fullnamepath "/ancillary_data/atmosphere/backg_select"; } ancillary_data_atmosphere_min_calib_twilight { String contentType "auxiliaryInformation"; String description "Minimum calculated calibration value allowed for twilight for each pce for calibration method 3"; String long_name "Minimum Twilight Calibration"; String source "Atmosphere ATBD"; String units "Photons*m3sr/J"; String origname "min_calib_twilight"; String fullnamepath "/ancillary_data/atmosphere/min_calib_twilight"; } ancillary_data_atmosphere_dead_time_sfac { String contentType "auxiliaryInformation"; String description "Dead time signal factor"; String long_name "Dead Time Signal Factor"; String source "Atmosphere ATBD section 2"; String units "1"; String origname "dead_time_sfac"; String fullnamepath "/ancillary_data/atmosphere/dead_time_sfac"; } ancillary_data_atmosphere_grd_search_width { String contentType "auxiliaryInformation"; String description "Ground detection search width"; String long_name "Ground Search Width"; String source "Atmosphere ATBD section 3.3.5"; String units "bins"; String origname "grd_search_width"; String fullnamepath "/ancillary_data/atmosphere/grd_search_width"; } ancillary_data_atmosphere_default_nrb_day { String contentType "auxiliaryInformation"; String description "Default value for daytime NRB used to replace NRB values that are out of range for each pce for calibration method 3"; String long_name "Daytime NRB Defaults"; String source "Atmosphere ATBD"; String units "Photons m2/Joule"; String origname "default_nrb_day"; String fullnamepath "/ancillary_data/atmosphere/default_nrb_day"; } ancillary_data_atmosphere_nrb_smooth { String contentType "auxiliaryInformation"; String description "Number of points to average the NRB data for calibration method 3"; String long_name "NRB Smoothing"; String source "Atmosphere ATBD"; String units "1"; String origname "nrb_smooth"; String fullnamepath "/ancillary_data/atmosphere/nrb_smooth"; } ancillary_data_atmosphere_cal_lat_bound { String contentType "auxiliaryInformation"; String description "The latitude boundary for calibration calculation"; String long_name "Cal Latitude Bound"; String source "Atmosphere ATBD section 2"; String units "degrees"; String origname "cal_lat_bound"; String fullnamepath "/ancillary_data/atmosphere/cal_lat_bound"; } ancillary_data_atmosphere_default_nrb_night { String contentType "auxiliaryInformation"; String description "Default value for nighttime NRB - used to replace NRB values that are out of range for each pce for calibration method 3"; String long_name "Nighttime NRB Defaults"; String source "Atmosphere ATBD"; String units "Photons m2/Joule"; String origname "default_nrb_night"; String fullnamepath "/ancillary_data/atmosphere/default_nrb_night"; } ancillary_data_atmosphere_max_calib_night { String contentType "auxiliaryInformation"; String description "Maximum calculated calibration value allowed for nighttime for each pce for calibration method 3"; String long_name "Maximum Nighttime Calibration"; String source "Atmosphere ATBD"; String units "Photons*m3sr/J"; String origname "max_calib_night"; String fullnamepath "/ancillary_data/atmosphere/max_calib_night"; } ancillary_data_atmosphere_pi { String contentType "auxiliaryInformation"; String description "PI"; String long_name "PI"; String source "Globals"; String units "counts"; String origname "pi"; String fullnamepath "/ancillary_data/atmosphere/pi"; } ancillary_data_atmosphere_atm_laser_wavelength_m { String contentType "auxiliaryInformation"; String description "ATLAS Laser wavelength, in meters"; String long_name "Laser Wavelength (m)"; String source "Atmosphere ATBD"; String units "meters"; String origname "atm_laser_wavelength_m"; String fullnamepath "/ancillary_data/atmosphere/atm_laser_wavelength_m"; } ancillary_data_atmosphere_alpha_day_pce2 { String contentType "auxiliaryInformation"; String description "Molecular Folding Scaling Factor (PCE2/day)"; String long_name "Molecular Folding Scaling Factor"; String source "Atmosphere ATBD, part 1, section 3.3.2"; String units "1"; String origname "alpha_day_pce2"; String fullnamepath "/ancillary_data/atmosphere/alpha_day_pce2"; } ancillary_data_atmosphere_cal_solar_angle_limit { String contentType "auxiliaryInformation"; String description "Minimum solar zenith angle for calibration calculation"; String long_name "Cal Solar Angle Limit"; String source "Atmosphere ATBD section 2"; String units "degrees"; String origname "cal_solar_angle_limit"; String fullnamepath "/ancillary_data/atmosphere/cal_solar_angle_limit"; } ancillary_data_atmosphere_alpha_night_pce2 { String contentType "auxiliaryInformation"; String units "1"; String description "Molecular Folding Scaling Factor (PCE2/night)"; String long_name "Molecular Folding Scaling Factor"; String source "Atmosphere ATBD, part 1, section 3.3.2"; String origname "alpha_night_pce2"; String fullnamepath "/ancillary_data/atmosphere/alpha_night_pce2"; } ancillary_data_atlas_sdp_gps_epoch { String contentType "auxiliaryInformation"; String 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."; String long_name "ATLAS Epoch Offset"; String source "Operations"; String units "seconds since 1980-01-06T00:00:00.000000Z"; String origname "atlas_sdp_gps_epoch"; String fullnamepath "/ancillary_data/atlas_sdp_gps_epoch"; } ancillary_data_end_rgt { String contentType "auxiliaryInformation"; String 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."; String long_name "Ending Reference Groundtrack"; String source "Derived"; String units "1"; Int32 valid_max 1387; Int32 valid_min 1; String origname "end_rgt"; String fullnamepath "/ancillary_data/end_rgt"; } ancillary_data_end_delta_time { String contentType "auxiliaryInformation"; String 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."; String long_name "ATLAS End Time (Actual)"; String source "Derived"; String standard_name "time"; String units "seconds since 2018-01-01"; String origname "end_delta_time"; String fullnamepath "/ancillary_data/end_delta_time"; } ancillary_data_end_orbit { String contentType "auxiliaryInformation"; String 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."; String long_name "Ending Orbit Number"; String source "Derived"; String units "1"; String origname "end_orbit"; String fullnamepath "/ancillary_data/end_orbit"; } ancillary_data_start_cycle { String contentType "auxiliaryInformation"; String 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."; String long_name "Starting Cycle"; String source "Derived"; String units "1"; Int32 valid_max 99; Int32 valid_min 0; String origname "start_cycle"; String fullnamepath "/ancillary_data/start_cycle"; } ancillary_data_data_end_utc { String contentType "auxiliaryInformation"; String description "UTC (in CCSDS-A format) of the last data point within the granule."; String long_name "End UTC Time of Granule (CCSDS-A, Actual)"; String source "Derived"; String units "1"; String origname "data_end_utc"; String fullnamepath "/ancillary_data/data_end_utc"; } ancillary_data_control { String contentType "auxiliaryInformation"; String description "PGE-specific control file used to generate this granule. To re-use, replace breaks (BR) with linefeeds."; String long_name "Control File"; String source "Operations"; String units "1"; String origname "control"; String fullnamepath "/ancillary_data/control"; } ancillary_data_start_gpssow { String contentType "auxiliaryInformation"; String description "GPS seconds-of-week of the first data point in the granule."; String long_name "Start GPS SOW of Granule (Actual)"; String source "Derived"; String units "seconds"; String origname "start_gpssow"; String fullnamepath "/ancillary_data/start_gpssow"; } ancillary_data_granule_end_utc { String contentType "auxiliaryInformation"; String description "Requested end time (in UTC CCSDS-A) of this granule."; String long_name "End UTC Time of Granule (CCSDS-A, Requested)"; String source "Derived"; String units "1"; String origname "granule_end_utc"; String fullnamepath "/ancillary_data/granule_end_utc"; } ancillary_data_end_cycle { String contentType "auxiliaryInformation"; String 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."; String long_name "Ending Cycle"; String source "Derived"; String units "1"; Int32 valid_max 99; Int32 valid_min 0; String origname "end_cycle"; String fullnamepath "/ancillary_data/end_cycle"; } ancillary_data_granule_start_utc { String contentType "auxiliaryInformation"; String description "Requested start time (in UTC CCSDS-A) of this granule."; String long_name "Start UTC Time of Granule (CCSDS-A, Requested)"; String source "Derived"; String units "1"; String origname "granule_start_utc"; String fullnamepath "/ancillary_data/granule_start_utc"; } ancillary_data_start_delta_time { String contentType "auxiliaryInformation"; String 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."; String long_name "ATLAS Start Time (Actual)"; String source "Derived"; String standard_name "time"; String units "seconds since 2018-01-01"; String origname "start_delta_time"; String fullnamepath "/ancillary_data/start_delta_time"; } ancillary_data_start_geoseg { String contentType "auxiliaryInformation"; String 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."; String long_name "Starting Geolocation Segment"; String source "Derived"; String units "1"; String origname "start_geoseg"; String fullnamepath "/ancillary_data/start_geoseg"; } ancillary_data_start_orbit { String contentType "auxiliaryInformation"; String 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."; String long_name "Starting Orbit Number"; String source "Derived"; String units "1"; String origname "start_orbit"; String fullnamepath "/ancillary_data/start_orbit"; } ancillary_data_data_start_utc { String contentType "auxiliaryInformation"; String description "UTC (in CCSDS-A format) of the first data point within the granule."; String long_name "Start UTC Time of Granule (CCSDS-A, Actual)"; String source "Derived"; String units "1"; String origname "data_start_utc"; String fullnamepath "/ancillary_data/data_start_utc"; } ancillary_data_end_gpsweek { String contentType "auxiliaryInformation"; String description "GPS week number of the last data point in the granule."; String long_name "Ending GPSWeek of Granule (Actual)"; String source "Derived"; String units "weeks from 1980-01-06"; String origname "end_gpsweek"; String fullnamepath "/ancillary_data/end_gpsweek"; } ancillary_data_start_rgt { String contentType "auxiliaryInformation"; String 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."; String long_name "Starting Reference Groundtrack"; String source "Derived"; String units "1"; Int32 valid_max 1387; Int32 valid_min 1; String origname "start_rgt"; String fullnamepath "/ancillary_data/start_rgt"; } ancillary_data_end_gpssow { String contentType "auxiliaryInformation"; String source "Derived"; String description "GPS seconds-of-week of the last data point in the granule."; String long_name "Ending GPS SOW of Granule (Actual)"; String units "seconds"; String origname "end_gpssow"; String fullnamepath "/ancillary_data/end_gpssow"; } ancillary_data_qa_at_interval { String contentType "auxiliaryInformation"; String description "Statistics time interval for along-track QA data."; String long_name "QA Along-Track Interval"; String source "control"; String units "1"; String origname "qa_at_interval"; String fullnamepath "/ancillary_data/qa_at_interval"; } ancillary_data_start_region { String contentType "auxiliaryInformation"; String 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."; String long_name "Starting Region"; String source "Derived"; String units "1"; String origname "start_region"; String fullnamepath "/ancillary_data/start_region"; } ancillary_data_start_gpsweek { String contentType "auxiliaryInformation"; String description "GPS week number of the first data point in the granule."; String long_name "Start GPSWeek of Granule (Actual)"; String source "Derived"; String units "weeks from 1980-01-06"; String origname "start_gpsweek"; String fullnamepath "/ancillary_data/start_gpsweek"; } ds_surf_type { String contentType "auxiliaryInformation"; String description "Dimension scale indexing the surface type array. Index=1 corresponds to Land; index = 2 corresponds to Ocean; Index = 3 corresponds to SeaIce; Index=4 corresponds to LandIce; Index=5 corresponds to InlandWater"; String flag_meanings "land ocean seaice landice inland_water"; Int32 flag_values 1, 2, 3, 4, 5; String long_name "Surface Type Dimension Scale"; String source "Dim Scale"; String units "1"; Int32 valid_max 5; Int32 valid_min 1; String origname "ds_surf_type"; String fullnamepath "/ds_surf_type"; } meteorology_molec_bkscat_delta_time { String contentType "modelResult"; String coordinates "latitude longitude"; String 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."; String long_name "Elapsed GPS seconds"; String source "Atmosphere ATBD"; String standard_name "time"; String units "seconds since 2018-01-01"; String origname "delta_time"; String fullnamepath "/meteorology_molec_bkscat/delta_time"; } meteorology_molec_bkscat_ds_va_bin_h { String contentType "auxiliaryInformation"; String description "Dimension scale containing the heights of the vertically-aligned bins."; String long_name "VA Bin Height Dimension Scale"; String source "Atmosphere ATBD"; String units "meters"; Float32 valid_max 20000.00000; Float32 valid_min -955.5000000; String origname "ds_va_bin_h"; String fullnamepath "/meteorology_molec_bkscat/ds_va_bin_h"; } orbit_info_crossing_time { String contentType "referenceInformation"; String 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."; String long_name "Ascending Node Crossing Time"; String source "POD/PPD"; String standard_name "time"; String units "seconds since 2018-01-01"; String origname "crossing_time"; String fullnamepath "/orbit_info/crossing_time"; } orbit_info_sc_orient_time { String contentType "referenceInformation"; String 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."; String long_name "Time of Last Spacecraft Orientation Change"; String source "POD/PPD"; String standard_name "time"; String units "seconds since 2018-01-01"; String origname "sc_orient_time"; String fullnamepath "/orbit_info/sc_orient_time"; } profile_1_bckgrd_atlas_delta_time { String contentType "modelResult"; String coordinates "delta_time"; String 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."; String long_name "Elapsed GPS seconds"; String source "Derived via Time Tagging"; String standard_name "time"; String units "seconds since 2018-01-01"; String origname "delta_time"; String fullnamepath "/profile_1/bckgrd_atlas/delta_time"; } profile_1_calibration_delta_time { String contentType "modelResult"; String coordinates "latitude longitude"; String 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."; String long_name "Calibration interval start time"; String source "Derived via Time Tagging"; String standard_name "time"; String units "seconds since 2018-01-01"; String origname "delta_time"; String fullnamepath "/profile_1/calibration/delta_time"; } profile_1_delta_time { String contentType "modelResult"; String coordinates "latitude longitude"; String 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."; String long_name "Elapsed GPS seconds"; String source "Atmosphere ATBD"; String standard_name "time"; String units "seconds since 2018-01-01"; String origname "delta_time"; String fullnamepath "/profile_1/delta_time"; } profile_1_ds_va_bin_h { String contentType "auxiliaryInformation"; String description "Dimension scale containing the heights of the vertically-aligned bins."; String long_name "VA Bin Height Dimension Scale"; String source "Atmosphere ATBD"; String units "meters"; Float32 valid_max 20000.00000; Float32 valid_min -955.5000000; String origname "ds_va_bin_h"; String fullnamepath "/profile_1/ds_va_bin_h"; } profile_2_bckgrd_atlas_delta_time { String contentType "modelResult"; String coordinates "delta_time"; String 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."; String long_name "Elapsed GPS seconds"; String source "Derived via Time Tagging"; String standard_name "time"; String units "seconds since 2018-01-01"; String origname "delta_time"; String fullnamepath "/profile_2/bckgrd_atlas/delta_time"; } profile_2_calibration_delta_time { String contentType "modelResult"; String coordinates "latitude longitude"; String 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."; String long_name "Calibration interval start time"; String source "Derived via Time Tagging"; String standard_name "time"; String units "seconds since 2018-01-01"; String origname "delta_time"; String fullnamepath "/profile_2/calibration/delta_time"; } profile_2_delta_time { String contentType "modelResult"; String coordinates "latitude longitude"; String 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."; String long_name "Elapsed GPS seconds"; String source "Atmosphere ATBD"; String standard_name "time"; String units "seconds since 2018-01-01"; String origname "delta_time"; String fullnamepath "/profile_2/delta_time"; } profile_2_ds_va_bin_h { String contentType "auxiliaryInformation"; String description "Dimension scale containing the heights of the vertically-aligned bins."; String long_name "VA Bin Height Dimension Scale"; String source "Atmosphere ATBD"; String units "meters"; Float32 valid_max 20000.00000; Float32 valid_min -955.5000000; String origname "ds_va_bin_h"; String fullnamepath "/profile_2/ds_va_bin_h"; } profile_3_bckgrd_atlas_delta_time { String contentType "modelResult"; String coordinates "delta_time"; String 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."; String long_name "Elapsed GPS seconds"; String source "Derived via Time Tagging"; String standard_name "time"; String units "seconds since 2018-01-01"; String origname "delta_time"; String fullnamepath "/profile_3/bckgrd_atlas/delta_time"; } profile_3_calibration_delta_time { String contentType "modelResult"; String coordinates "latitude longitude"; String 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."; String long_name "Calibration interval start time"; String source "Derived via Time Tagging"; String standard_name "time"; String units "seconds since 2018-01-01"; String origname "delta_time"; String fullnamepath "/profile_3/calibration/delta_time"; } profile_3_delta_time { String contentType "modelResult"; String coordinates "latitude longitude"; String 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."; String long_name "Elapsed GPS seconds"; String source "Atmosphere ATBD"; String standard_name "time"; String units "seconds since 2018-01-01"; String origname "delta_time"; String fullnamepath "/profile_3/delta_time"; } profile_3_ds_va_bin_h { String contentType "auxiliaryInformation"; String description "Dimension scale containing the heights of the vertically-aligned bins."; String long_name "VA Bin Height Dimension Scale"; String source "Atmosphere ATBD"; String units "meters"; Float32 valid_max 20000.00000; Float32 valid_min -955.5000000; String origname "ds_va_bin_h"; String fullnamepath "/profile_3/ds_va_bin_h"; } quality_assessment_profile_1_delta_time { String contentType "qualityInformation"; String 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."; String long_name "QA start time"; String source "Derived via Time Tagging"; String standard_name "time"; String units "seconds since 2018-01-01"; String origname "delta_time"; String fullnamepath "/quality_assessment/profile_1/delta_time"; } quality_assessment_profile_2_delta_time { String contentType "qualityInformation"; String 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."; String long_name "QA start time"; String source "Derived via Time Tagging"; String standard_name "time"; String units "seconds since 2018-01-01"; String origname "delta_time"; String fullnamepath "/quality_assessment/profile_2/delta_time"; } quality_assessment_profile_3_delta_time { String contentType "qualityInformation"; String 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."; String long_name "QA start time"; String source "Derived via Time Tagging"; String standard_name "time"; String units "seconds since 2018-01-01"; String origname "delta_time"; String fullnamepath "/quality_assessment/profile_3/delta_time"; } FakeDim0 { String units "level"; } FakeDim1 { String units "level"; } DODS_EXTRA { String Unlimited_Dimension "meteorology_molec_bkscat_delta_time", "orbit_info_crossing_time", "orbit_info_sc_orient_time", "profile_1_bckgrd_atlas_delta_time", "profile_1_calibration_delta_time", "profile_1_delta_time", "profile_2_bckgrd_atlas_delta_time", "profile_2_calibration_delta_time", "profile_2_delta_time", "profile_3_bckgrd_atlas_delta_time", "profile_3_calibration_delta_time", "profile_3_delta_time"; } }