Attributes { HDF5_GLOBAL { String granule_type "ATL09"; String short_name "ATL09"; String level "L3A"; String description "Along-track Cloud and other significant atmosphere layer heights, blowing snow, integrated backscatter, optical depth"; 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 Conventions "CF-1.6"; String date_type "UTC"; String featureType "trajectory"; String geospatial_lat_units "degrees_north"; String geospatial_lon_units "degrees_east"; String identifier_product_doi "10.5067/ATLAS/ATL09.001"; String identifier_product_doi_authority "http://dx.doi.org"; String identifier_product_type "ATL09"; 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 spatial_coverage_type "Horizontal"; String standard_name_vocabulary "CF-1.6"; String time_type "CCSDS UTC-A"; String date_created "2019-05-23T13:26:45.000000Z"; String hdfversion "HDF5 1.10.3"; String history "2019-05-23T13:26:45.000000Z;f737c66c-7778-37ab-a200-0cfee0675f21;Created by PGE atlas_l3a_atm Version 4.1"; String identifier_file_uuid "f737c66c-7778-37ab-a200-0cfee0675f21"; String identifier_product_format_version "4.1"; 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 -88.018490671091101; Float64 geospatial_lon_min -179.99054067106431; Float64 geospatial_lat_max 88.043163885934163; Float64 geospatial_lon_max 179.98081571057057; 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 title "ATLAS/ICESat-2 L3A Calibrated Backscatter Profiles and Atmospheric Layer Characteristics"; String identifier_file_product_type "ATL09"; 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 ATL09 is to provide calibrated integrated backscatter, cloud layers and other meteorological and atmosphere data that will be used by in the creation of other ICESat-2 L3 products."; 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 "3A"; 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 " ATL09_20181117090604_07600101_001_01.h5 NSIDC DAAC > National Snow and Ice Data Center DAAC nsidc@nsidc.org http://nsidc.org/daac/ pointOfContact 2019-05-23T13:26:45.000000Z ISO 19115-2 Geographic information - Metadata - Part 2: Extensions for imagery and gridded data ISO 19115-2:2009-02-15 ATL09_20181117090604_07600101_001_01.h5 2019-05-23T13:26:45.000000Z creation ATL09 The ECS Short Name 001 The ECS Version ID ATL09_20181117090604_07600101_001_01.h5 ProducerGranuleId The ICESat-2 ATL09 standard data product contains along-track cloud and other significant atmosphere layer heights, blowing snow, integrated backscatter and optical depth. onGoing ATL09 001 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: 2018-11-17T09:06:03.961195Z gov.nasa.esdis.umm.orbitcalculatedspatialdomains OrbitCalculatedSpatialDomains 2018-11-17T09:06:04.000000Z 2018-11-17T10:40:21.000000Z dataset 2019-05-23T13:26:45.000000Z;f737c66c-7778-37ab-a200-0cfee0675f21;Created by PGE atlas_l3a_atm Version 4.1 2019-05-23T13:26:45.000000Z "; String iso_19139_series_xml " ATL09.001 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 L3A Calibrated Backscatter Profiles and Atmospheric Layer Characteristics 2016-06-09 revision 001 ATL09 The ECS Short Name 001 The ECS Version ID doi:10.5067/ATLAS/ATL09.002 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 The ICESat-2 ATL09 standard data product contains along-track cloud and other significant atmosphere layer heights, blowing snow, integrated backscatter and optical depth. The purpose of ATL09 is to provide calibrated integrated backscatter, cloud layers and other meteorological and atmosphere data that will be used by in the creation of other ICESat-2 L3 products. The software that generates the ATL09 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 EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD PROPERTIES > CLOUD HEIGHT > NONE > NONE EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD MICROPHYSICS > CLOUD OPTICAL DEPTH/THICKNESS > 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 3A 3A 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/ATL09.002 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 measureDesciption "TBD"; String nameOfMeasure "TBD"; String unitofMeasure "TBD"; String value "NOT_SET"; String fullnamepath "/METADATA/DataQuality/DomainConsistency"; } METADATA_ProductSpecificationDocument { String characterSet "utf8"; String edition "Revision B"; String language "eng"; String publicationDate "12/1/2017"; String ShortName "ATL03_SDP"; String title "ICESat-2-SIPS-SPEC-4263 - ATLAS Science Algorithm Standard Data Product (SDP) Volume 8 (ATL09). Revision B."; String fullnamepath "/METADATA/ProductSpecificationDocument"; } METADATA_SeriesIdentification { String maintenanceAndUpdateFrequency "asNeeded"; String maintenanceDate "SET_BY_META"; String VersionID "001"; String identifier_product_DOI "10.5067/ATLAS/ATL09.001"; 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 L3A Calibrated Backscatter Profiles and Atmospheric Layer Characteristics"; String shortName "ATL09"; String revisionDate "2016-06-09"; String resourceProviderOrganizationName "National Aeronautics and Space Administration (NASA)"; String abstract "The ICESat-2 ATL09 standard data product contains along-track cloud and other significant atmosphere layer heights, blowing snow, integrated backscatter and optical depth."; String purpose "The purpose of ATL09 is to provide calibrated integrated backscatter, cloud layers and other meteorological and atmosphere data that will be used by in the creation of other ICESat-2 L3 products."; String credit "The software that generates the ATL09 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 "2019-05-23T13:26:45.000000Z"; String uuid "f737c66c-7778-37ab-a200-0cfee0675f21"; String fileName "ATL09_20181117090604_07600101_001_01.h5"; String VersionID "001"; String language "eng"; String characterSet "utf8"; String shortName "ATL09"; String originatorOrganizationName "GSFC I-SIPS > ICESat-2 Science Investigator-led Processing System"; String abstract "The ICESat-2 ATL09 standard data product contains along-track cloud and other significant atmosphere layer heights, blowing snow, integrated backscatter and optical depth."; String purpose "The purpose of ATL09 is to provide calibrated integrated backscatter, cloud layers and other meteorological and atmosphere data that will be used by in the creation of other ICESat-2 L3 products."; String credit "The software that generates the ATL09 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 88.043163885934163; Float64 eastBoundLongitude 179.98081571057057; Float64 southBoundLatitude -88.018490671091101; Float64 westBoundLongitude -179.99054067106431; String rangeBeginningDateTime "2018-11-17T09:06:04.338048Z"; 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 "2019-05-23T14:06:24.000000Z"; String fileName "ATL09_20181117090604_07600101_001_01.qa"; String fullnamepath "/METADATA/QADatasetIdentification"; } METADATA_Lineage { } 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_l3a_atm_001351750.ctl"; String shortName "CNTL"; String version "1"; String fullnamepath "/METADATA/Lineage/Control"; } METADATA_Lineage_ANC38_09 { String description "ISO 19139 XML file containing DataSet-level metadata information."; String fileName "ATL09.001.dataset.xml"; String shortName "ANC38-09"; String uuid "f0f8d3c5-e341-3b71-9fc7-94a544e14ca2"; String version "001"; String fullnamepath "/METADATA/Lineage/ANC38-09"; } METADATA_Lineage_ANC25_09 { String description "HDF5 template file that defines the organization and default content of the product."; String fileName "atl09_template.h5"; String shortName "ANC25-09"; String uuid "f22c0125-4a42-34d9-ad56-6f9152e55857"; String version "041"; String fullnamepath "/METADATA/Lineage/ANC25-09"; } METADATA_Lineage_ANC30 { String description "GMASI snow map."; String fileName "gl_4km_snow_ice_map_2018321"; String shortName "ANC30"; String uuid "555870ab-0820-3fec-9f28-55263f3dd3b7"; String version "001"; String fullnamepath "/METADATA/Lineage/ANC30"; } METADATA_Lineage_ANC26_09 { String description "HDF5 template file that defines the organization and default content of the product metadata."; String fileName "atl09_metadata_template.h5"; String shortName "ANC26-09"; String uuid "ae46ca35-ff78-34cc-b6ae-0c588aa5534c"; String version "041"; String fullnamepath "/METADATA/Lineage/ANC26-09"; } METADATA_Lineage_ANC36_09 { String description "ISO 19139 XML file containing Series-level metadata information."; String fileName "ATL09.001.series.xml"; String shortName "ANC36-09"; String uuid "dd146059-58e3-30db-a616-4fa465ec297e"; String version "001"; String fullnamepath "/METADATA/Lineage/ANC36-09"; } METADATA_Lineage_ANC31 { String description "Sea-ice concentration"; String fileName "SET_BY_PGE"; String shortName "SET_BY_PGE"; String uuid "SET_BY_PGE"; String version "SET_BY_PGE"; String fullnamepath "/METADATA/Lineage/ANC31"; } 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_ATL04 { String description "ICESat-2 ATLAS L2A Atmosphere data products."; String fileName "ATL04_20181117090604_07600101_001_01.h5"; String shortName "ATL04"; String uuid "ec5c08b5-f003-3a42-a1d3-4c3cef14448c"; String version "001"; Int32 start_cycle 1; Int32 end_cycle 1; Int32 start_orbit 961; Int32 end_orbit 961; Int32 start_rgt 760; Int32 end_rgt 760; Int32 start_region 1; Int32 end_region 14; Int32 start_geoseg 11; Int32 end_geoseg 2007124; String fullnamepath "/METADATA/Lineage/ATL04"; } METADATA_Lineage_ANC32 { String description "NOAA snow/ice file"; String fileName "ANC32_20171107_001_01.h5"; String shortName "ANC32"; String uuid "ae39fdeb-79a7-3d60-84d5-cee7d98edacc"; String version "20171107"; String fullnamepath "/METADATA/Lineage/ANC32"; } 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 2.1.1"; String softwareDate "Apr 23 2019"; String softwareTitle "Creates ATLAS HDF5 browse files"; String runTimeParameters "CTL_atlas_l3a_atm_001351750.ctl"; String stepDateTime "2019-05-23T14:07:00.000000Z"; String fullnamepath "/METADATA/ProcessStep/Browse"; } METADATA_ProcessStep_Metadata { String identifier "atlas_meta"; String softwareVersion "Version 4.1.1"; String softwareDate "Apr 23 2019"; String softwareTitle "Creates ATLAS XML metadata files"; String runTimeParameters "CTL_atlas_l3a_atm_001351750.ctl"; String stepDateTime "2019-05-23T14:07:49.000000Z"; String fullnamepath "/METADATA/ProcessStep/Metadata"; } METADATA_ProcessStep_PGE { String ATBDDate "11/15/2017"; String ATBDTitle "ICESat-2-SIPS-SPEC-1607 - SIPs: Atmosphere Products L5 Specification Document"; String ATBDVersion "Version 7.3"; String documentation "ICESat-2-SIPS-SPEC-2332 - ATLAS Science Algorithm Software Design Description (SDD) Volume 13 (atlas_l3a_atm). Revision C."; String documentDate "12/1/2017"; String processDescription "Computes cloud layers, apparent surface reflectance, optical depth, blowing snow and cloud flag and other associated atmosphere data."; String identifier "atlas_l3a_atm"; String softwareVersion "Version 4.1"; String softwareDate "Apr 23 2019"; String softwareTitle "ASAS L3A ATM PGE"; String runTimeParameters "CTL_atlas_l3a_atm_001351750.ctl"; String stepDateTime "2019-05-23T13:26:45.000000Z"; 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 "atl09_qa_util"; String softwareVersion "Version 4.1"; String softwareDate "Apr 23 2019"; String softwareTitle "ATL09 QA Utility"; String runTimeParameters "CTL_atlas_l3a_atm_001351750.ctl"; String stepDateTime "2019-05-23T14:06:24.000000Z"; 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 "See subgroups for individual data rates."; 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_high_rate { String Description "Contains parameters related to Calibrated Attenuated Backscatter at 25 hz"; String data_rate "Data in this group is stored at a 25hz (25 per second) rate."; String fullnamepath "/profile_1/high_rate"; } profile_1_low_rate { String Description "Contains parameters related to atmosphere characteristic at 1 hz"; String data_rate "Data in this group is stored at a 1hz (1 per second) rate."; String fullnamepath "/profile_1/low_rate"; } 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 "See subgroups for individual data rates."; 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_high_rate { String Description "Contains parameters related to Calibrated Attenuated Backscatter at 25 hz"; String data_rate "Data in this group is stored at a 25hz (25 per second) rate."; String fullnamepath "/profile_3/high_rate"; } profile_3_low_rate { String Description "Contains parameters related to atmosphere characteristic at 1 hz"; String data_rate "Data in this group is stored at a 1hz (1 per second) rate."; String fullnamepath "/profile_3/low_rate"; } 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 per-profile quality assessment data."; String fullnamepath "/quality_assessment/profile_1"; } quality_assessment_profile_2 { String Description "Contains per-profile quality assessment data."; String fullnamepath "/quality_assessment/profile_2"; } quality_assessment_profile_3 { String Description "Contains per-profile quality assessment data."; String fullnamepath "/quality_assessment/profile_3"; } 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 "See subgroups for individual data rates."; 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_high_rate { String Description "Contains parameters related to Calibrated Attenuated Backscatter at 25 hz"; String data_rate "Data in this group is stored at a 25hz (25 per second) rate."; String fullnamepath "/profile_2/high_rate"; } profile_2_low_rate { String Description "Contains parameters related to atmosphere characteristic at 1 hz"; String data_rate "Data in this group is stored at a 1hz (1 per second) rate."; String fullnamepath "/profile_2/low_rate"; } 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 units "1"; String contentType "referenceInformation"; String long_name "Cycle Number"; String description "A count of the number of exact repeats of this reference orbit."; String source "Operations"; Int16 valid_min 0; Int16 valid_max 50; String origname "cycle_number"; String fullnamepath "/orbit_info/cycle_number"; String coordinates "orbit_info_crossing_time"; } orbit_info_orbit_number { String units "1"; String contentType "referenceInformation"; String long_name "Orbit Number"; String description "Unique identifying number for each planned ICESat-2 orbit."; String source "Operations"; UInt16 valid_min 1; UInt16 valid_max 65000; String origname "orbit_number"; String fullnamepath "/orbit_info/orbit_number"; String coordinates "orbit_info_crossing_time"; } orbit_info_lan { String units "degrees_east"; String contentType "referenceInformation"; String long_name "Ascending Node Longitude"; String description "Longitude at the ascending node crossing."; String source "POD/PPD"; Float64 valid_min -180.00000000000000; Float64 valid_max 180.00000000000000; String origname "lan"; String fullnamepath "/orbit_info/lan"; String coordinates "orbit_info_crossing_time"; } orbit_info_sc_orient { String units "1"; String contentType "referenceInformation"; String long_name "Spacecraft Orientation"; 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 source "POD/PPD"; String flag_meanings "backward forward transition"; Int16 flag_values 0, 1, 2; Int16 valid_min 0; Int16 valid_max 2; String origname "sc_orient"; String fullnamepath "/orbit_info/sc_orient"; String coordinates "orbit_info_sc_orient_time"; } orbit_info_rgt { String units "1"; String contentType "referenceInformation"; String long_name "Reference Ground track"; 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 source "POD/PPD"; Int16 valid_min 1; Int16 valid_max 1387; String origname "rgt"; String fullnamepath "/orbit_info/rgt"; String coordinates "orbit_info_crossing_time"; } profile_1_bckgrd_atlas_bckgrd_counts_reduced { String units "counts"; String contentType "modelResult"; String long_name "ATLAS 50-shot background count - reduced"; 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 source "ATL03 ATBD Section 7.3"; 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_counts { String units "counts"; String contentType "modelResult"; String long_name "ATLAS 50-shot background count"; String description "Onboard 50 shot background (200 Hz) sum of photon events within the altimetric range window."; String source "ATL03 ATBD Section 7.3"; 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_hist_top { String units "meters"; String contentType "modelResult"; String long_name "Top of the altimetric range window"; 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 source "ATL03 ATBD Section 7.3"; 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 units "meters"; String contentType "modelResult"; String long_name "Altimetric range window width"; 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 source "ATL03 ATBD Section 7.3"; 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 units "meters"; String contentType "modelResult"; String long_name "Altimetric range window height - reduced"; 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 source "ATL03 ATBD Section 7.3"; 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_rate { String units "counts / second"; String contentType "modelResult"; String long_name "Background count rate based on the ATLAS 50-shot sum"; 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 source "ATL03 ATBD Section 7.3"; 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 units "counts"; String contentType "referenceInformation"; String long_name "PCE Major frame counter"; 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 source "ATL02"; String origname "pce_mframe_cnt"; String fullnamepath "/profile_1/bckgrd_atlas/pce_mframe_cnt"; String coordinates "profile_1_bckgrd_atlas_delta_time"; } profile_1_high_rate_sig_count_med { String units "counts"; String long_name "Count of Signal Heights - Medium"; String description "Count of medium-confidence signal photons"; String source "ATL03 ATBD, Section 5"; String contentType "referenceInformation"; String origname "sig_count_med"; String fullnamepath "/profile_1/high_rate/sig_count_med"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_surface_h_dens { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "modelResult"; String long_name "Surface h from density"; String description "Surface height from density"; String source "Atmosphere ATBD"; String origname "surface_h_dens"; String fullnamepath "/profile_1/high_rate/surface_h_dens"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_dem_flag { Int16 _FillValue 127; String units "1"; String contentType "referenceInformation"; String long_name "dem source flag"; String description "Indicates source of the DEM height. Values: 0=None, 1=GIMP, 2=GMTED, 3=MSS, 4=Antarctic."; String source "Atmosphere ATBD"; String flag_meanings "none gimp gmted mss antarctic"; Int16 flag_values 0, 1, 2, 3, 4; Int16 valid_min 0; Int16 valid_max 4; String origname "dem_flag"; String fullnamepath "/profile_1/high_rate/dem_flag"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_msw_flag { Int16 _FillValue 127; String units "1"; String contentType "modelResult"; String long_name "Multiple Scattering Warning Flag"; String description "Multiple Scattering warning flag. The multiple scattering warning flag (ATL09 parameter msw_flag) has values from -1 to 5 where zero means no multiple scattering and 5 the greatest. If no layers were detected, then msw_flag = 0. If blowing snow is detected and its estimated optical depth is greater than or equal to 0.5, then msw_flag = 5. If the blowing snow optical depth is less than 0.5, then msw_flag = 4. If no blowing snow is detected but there are cloud or aerosol layers detected, the msw_flag assumes values of 1 to 3 based on the height of the bottom of the lowest layer: < 1 km, msw_flag = 3; 1-3 km, msw_flag = 2; > 3km, msw_flag = 1. A value of -1 indicates that the signal to noise of the data was too low to reliably ascertain the presence of cloud or blowing snow. We expect values of -1 to occur only during daylight."; String source "Atmosphere ATBD"; String flag_meanings "cannot_determine no_layers layer_gt_3km layer_between_1_and_3_km layer_lt_1km blow_snow_od_lt_0.5 blow_snow_od_gt_0.5"; Int16 flag_values -1, 0, 1, 2, 3, 4, 5; Int16 valid_min -1; Int16 valid_max 5; String origname "msw_flag"; String fullnamepath "/profile_1/high_rate/msw_flag"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_cloud_flag_atm { String units "1"; String contentType "modelResult"; String long_name "Cloud Flag Atm"; String description "Number of layers found from the backscatter profile using the DDA layer finder."; String source "Atmosphere ATBD"; Int16 valid_min 0; Int16 valid_max 10; String origname "cloud_flag_atm"; String fullnamepath "/profile_1/high_rate/cloud_flag_atm"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_ocean_surf_reflec { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Ocean Surface Reflectance"; String description "Ocean Surface Reflectance from Eqn 4.10 based on the Cox-Munk model."; String source "Atmosphere ATBD"; String origname "ocean_surf_reflec"; String fullnamepath "/profile_1/high_rate/ocean_surf_reflec"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_sig_count_low { String units "counts"; String contentType "referenceInformation"; String long_name "Count of Signal Heights - Low"; String description "Count of low-confidence signal photons"; String source "ATL03 ATBD, Section 5"; String origname "sig_count_low"; String fullnamepath "/profile_1/high_rate/sig_count_low"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_layer_attr { String units "1"; String contentType "modelResult"; String long_name "Layer attribute flag"; String description "Layer attribute flag for each of the possible 10 layers. Indicates (0) no_layer (1) cloud, (2) aerosol or (3) unknown."; String source "Atmosphere ATBD"; String flag_meanings "no_layer cloud aerosol unknown"; Int16 flag_values 0, 1, 2, 3; Int16 valid_min 0; Int16 valid_max 3; String origname "layer_attr"; String fullnamepath "/profile_1/high_rate/layer_attr"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_sig_h_sdev_hi { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "referenceInformation"; String long_name "SDev of Signal Heights -High"; String description "SDev of the heights of high-confidence signal photons"; String source "ATL03 ATBD, Section 5"; String origname "sig_h_sdev_hi"; String fullnamepath "/profile_1/high_rate/sig_h_sdev_hi"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_bsnow_con { Int16 _FillValue 127; String units "1"; String contentType "modelResult"; String long_name "Blowing snow confidence"; String description "Blowing snow confidence. -3=surface not detected; -2=no surface wind;-1=no scattering layer found; 0=no top layer found; 1=none-little; 2=weak; 3=moderate; 4=moderate-high; 5=high; 6=very high"; String source "Atmosphere ATBD"; String flag_meanings "surface_not_detected no_surface_wind no_scattering_layer_found no_top_layer_found none_little weak moderate moderate_high high very_high"; Int16 flag_values -3, -2, -1, 0, 1, 2, 3, 4, 5, 6; Int16 valid_min -3; Int16 valid_max 6; String origname "bsnow_con"; String fullnamepath "/profile_1/high_rate/bsnow_con"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_layer_flag { String units "1"; String contentType "qualityInformation"; String long_name "Consolidated cloud flag"; String description "This flag is a combination of multiple flags (cloud_flag_atm, cloud_flag_asr, and bsnow_con) and takes daytime/nighttime into consideration. A value of 1 means clouds or blowing snow are likely present. A value of 0 indicates the likely absence of clouds or blowing snow."; String source "Atmosphere ATBD"; String flag_meanings "likely_clear likely_cloudy"; Int16 flag_values 0, 1; Int16 valid_min 0; Int16 valid_max 1; String origname "layer_flag"; String fullnamepath "/profile_1/high_rate/layer_flag"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_dtime_fac1 { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "dead_time_factor1"; String description "Dead time correction factor for surface signal computed from radiometric lookup table."; String source "Atmosphere ATBD"; String origname "dtime_fac1"; String fullnamepath "/profile_1/high_rate/dtime_fac1"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_bsnow_psc { String units "1"; String contentType "modelResult"; String long_name "Blowing snow PSC flag"; String description "Blowing snow PSC flag. Indicates the potential for polar stratospheric clouds to affect the blowing snow retrieval, where 0=none and 3=maximum. This flag is a function of month and hemisphere and is only applied poleward of 60 north and south."; String source "Atmosphere ATBD Section 4.5"; String flag_meanings "none slight moderate maximum_bsnow_PSC_affected"; Int16 flag_values 0, 1, 2, 3; Int16 valid_min 0; Int16 valid_max 3; String origname "bsnow_psc"; String fullnamepath "/profile_1/high_rate/bsnow_psc"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_surf_refl_true { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Estimated Surface Reflectance"; String description "The value of the clear-sky surface reflectivity to use in the compuation of total column optical depth and cloud detection from the measures apparent surface reflectance (ASR)."; String source "Atmosphere ATBD"; String origname "surf_refl_true"; String fullnamepath "/profile_1/high_rate/surf_refl_true"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_bsnow_h { String contentType "modelResult"; String long_name "Blowing snow top h"; String description "Blowing snow layer top height"; String source "Atmosphere ATBD"; Float32 _FillValue 3.402823466e+38; String units "meters"; String origname "bsnow_h"; String fullnamepath "/profile_1/high_rate/bsnow_h"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_sig_h_mean_hi { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "referenceInformation"; String long_name "Mean of SignalHeights - High"; String description "Mean height of high-confidence signal photons"; String source "ATL03 ATBD, Section 5"; String origname "sig_h_mean_hi"; String fullnamepath "/profile_1/high_rate/sig_h_mean_hi"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_beam_azimuth { Float32 _FillValue 3.402823466e+38; String units "degrees_east"; String contentType "referenceInformation"; String long_name "beam azimuth"; String description "Beam azimuth"; String source "ATL03 ATBD"; String origname "beam_azimuth"; String fullnamepath "/profile_1/high_rate/beam_azimuth"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_range_to_top { String units "meters"; String contentType "referenceInformation"; String long_name "Range"; String description "Range from the spacecraft to the top of the atmosphere range window."; String source "Atmosphere ATBD"; String origname "range_to_top"; String fullnamepath "/profile_1/high_rate/range_to_top"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_solar_azimuth { String units "degrees_east"; String contentType "referenceInformation"; String long_name "solar azimuth"; String description "The direction, eastwards from north, of the sun vector as seen by an observer at the laser ground spot."; String source "ATL03g ATBD"; String origname "solar_azimuth"; String fullnamepath "/profile_1/high_rate/solar_azimuth"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_longitude { String units "degrees_east"; String contentType "referenceInformation"; String long_name "Longitude of the ATM histogram"; String standard_name "longitude"; String description "Longitude at the the top of the ATM histogram, WGS84, East=+, derived from the geolocation of the ATM range window."; String source "ATL03g ATBD"; Float64 valid_min -180.00000000000000; Float64 valid_max 180.00000000000000; String origname "longitude"; String fullnamepath "/profile_1/high_rate/longitude"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude"; } profile_1_high_rate_latitude { String units "degrees_north"; String contentType "referenceInformation"; String long_name "Latitude of the ATM histogram"; String standard_name "latitude"; String description "Latitude at the the top of the ATM histogram, WGS84, North=+, Derived from the geolocation of the ATM range window."; String source "ATL03g ATBD"; Float64 valid_min -90.000000000000000; Float64 valid_max 90.000000000000000; String origname "latitude"; String fullnamepath "/profile_1/high_rate/latitude"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_longitude"; } profile_1_high_rate_surf_type { String units "1"; String contentType "referenceInformation"; String long_name "surface type"; 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 source "ATL03 ATBD, Section 4"; String flag_meanings "not_type is_type"; Int16 flag_values 0, 1; Int16 valid_min 0; Int16 valid_max 1; String origname "surf_type"; String fullnamepath "/profile_1/high_rate/surf_type"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_density_pass1 { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Density profile - pass1"; String description "Density profiles from pass 1."; String source "Atmosphere ATBD Part II"; String origname "density_pass1"; String fullnamepath "/profile_1/high_rate/density_pass1"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_column_od_asr_qf { Int16 _FillValue 127; String units "1"; String contentType "modelResult"; String long_name "Optical depth ASR quality"; String description "Total column optical depth from ASR quality flag. The total atmosphere column particulate optical depth can be computed from the apparent surface reflectance if the actual surface reflectance is well known. The flag indicates the surface type over which the flag is computed in the order from unable to compute (0 - no_surface_signal) to best quality (4=water)."; String source "Atmosphere ATBD"; String flag_meanings "no_signal land sea_ice land_ice water"; Int16 flag_values 0, 1, 2, 3, 4; String origname "column_od_asr_qf"; String fullnamepath "/profile_1/high_rate/column_od_asr_qf"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_bsnow_od { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Blowing snow OD"; String description "Blowing snow layer optical depth"; String source "Atmosphere ATBD"; String origname "bsnow_od"; String fullnamepath "/profile_1/high_rate/bsnow_od"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_surf_type_igbp { String units "1"; String contentType "referenceInformation"; String long_name "IGBP Surface Type"; String description "IGBP Surface Type"; String source "Atmosphere ATBD, IGBP Surface Type"; String origname "surf_type_igbp"; String fullnamepath "/profile_1/high_rate/surf_type_igbp"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_backg_c { String units "counts"; String contentType "modelResult"; String long_name "Background"; String description "Background, in photons/bin, used in the NRB Computation."; String source "Atmosphere ATBD"; String origname "backg_c"; String fullnamepath "/profile_1/high_rate/backg_c"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_sig_h_mean_med { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "referenceInformation"; String long_name "Mean of Signa Heightsl - Med"; String description "Mean height of medium-confidence signal photons"; String source "ATL03 ATBD, Section 5"; String origname "sig_h_mean_med"; String fullnamepath "/profile_1/high_rate/sig_h_mean_med"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_dem_h { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "referenceInformation"; String long_name "DEM Height"; String description "Best available DEM (in priority of GIMP/ANTARCTIC/GMTED/MSS) value at the geolocation point."; String source "Atmosphere ATBD"; String origname "dem_h"; String fullnamepath "/profile_1/high_rate/dem_h"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_cloud_flag_asr { Int16 _FillValue 127; String units "1"; String contentType "modelResult"; String long_name "Cloud Flag ASR"; String description "Cloud flag (probability) from apparent surface reflectance. 0=clear with high confidence; 1=clear with medium confidence; 2=clear with low confidence; 3=cloudy with low confidence; 4=cloudy with medium confidence; 5=cloudy with high confidence; 6=unknown"; String source "Atmosphere ATBD"; String flag_meanings "clear_with_high_confidence clear_with_medium_confidence clear_with_low_confidence cloudy_with_low_confidence cloudy_with_medium_confidence cloudy_with_high_confidence unknown"; Int16 flag_values 0, 1, 2, 3, 4, 5, 6; Int16 valid_min 0; Int16 valid_max 6; String origname "cloud_flag_asr"; String fullnamepath "/profile_1/high_rate/cloud_flag_asr"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_tx_pulse_energy { Float32 _FillValue 3.402823466e+38; String units "Joules"; String contentType "referenceInformation"; String long_name "Transmit Pulse Energy"; String description "Transmit energy, from the laser internal energy monitor, split into per-beam measurements."; String source "ATL02 ATBD, Section 7.2"; String origname "tx_pulse_energy"; String fullnamepath "/profile_1/high_rate/tx_pulse_energy"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_layer_bot { Float32 _FillValue 3.402823466e+38; String units "meter"; String contentType "modelResult"; String long_name "Height layer bottoms"; String description "Height of bottom of detected layers"; String source "Atmosphere ATBD"; String origname "layer_bot"; String fullnamepath "/profile_1/high_rate/layer_bot"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_cab_prof { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Calibrated Attenuated Backscatter"; String description "Calibrated Attenuated Backscatter from 20 to -1 km with vertical resolution of 30m (eqn 4.1)"; String source "Atmosphere ATBD"; String origname "cab_prof"; String fullnamepath "/profile_1/high_rate/cab_prof"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_density_pass2 { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Density profile - pass2"; String description "Density profiles from pass 2."; String source "Atmosphere ATBD Part II"; String origname "density_pass2"; String fullnamepath "/profile_1/high_rate/density_pass2"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_surface_height { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "modelResult"; String long_name "Surface height"; String description "Height of the detected surface bin."; String source "Atmosphere ATBD section 3.3.5"; String origname "surface_height"; String fullnamepath "/profile_1/high_rate/surface_height"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_bsnow_dens { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Blowing snow density"; String description "Blowing snow layer density"; String source "Atmosphere ATBD"; String origname "bsnow_dens"; String fullnamepath "/profile_1/high_rate/bsnow_dens"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_layer_top { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "modelResult"; String long_name "Height layer tops"; String description "Height of top of detected layers"; String source "Atmosphere ATBD"; String origname "layer_top"; String fullnamepath "/profile_1/high_rate/layer_top"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_column_od_asr { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Optical depth from ASR"; String description "Optical depth of atmosphere column based on apparent surface reflectance and the assumed actual surface reflectance."; String source "Atmosphere ATBD"; String origname "column_od_asr"; String fullnamepath "/profile_1/high_rate/column_od_asr"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_layer_dens { String units "1"; String contentType "modelResult"; String long_name "Layer Density"; String description "Layer Density"; String source "Atmosphere ATBD"; String origname "layer_dens"; String fullnamepath "/profile_1/high_rate/layer_dens"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_prof_dist_y { String units "meters"; String contentType "referenceInformation"; String long_name "Across Track Distance from RGT"; String description "Across-Track distance from the reference ground track."; String source "ATL03g ATBD, Section 3.4"; String origname "prof_dist_y"; String fullnamepath "/profile_1/high_rate/prof_dist_y"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_beam_elevation { Float32 _FillValue 3.402823466e+38; String units "degrees"; String contentType "referenceInformation"; String long_name "beam elevation"; String description "Beam elevation"; String source "ATL03 ATBD"; String origname "beam_elevation"; String fullnamepath "/profile_1/high_rate/beam_elevation"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_segment_id { String units "1"; String contentType "referenceInformation"; String long_name "along-track segment ID number."; 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 source "ATL03 ATBD, Section 3.1"; String origname "segment_id"; String fullnamepath "/profile_1/high_rate/segment_id"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_surface_bin { Int32 _FillValue 2147483647; String units "1"; String contentType "modelResult"; String long_name "Surface bin"; String description "Vertially aligned, NRB bin number of the detected surface return."; String source "Atmosphere ATBD section 3.3.5"; String origname "surface_bin"; String fullnamepath "/profile_1/high_rate/surface_bin"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_solar_elevation { String units "degrees"; String contentType "referenceInformation"; String long_name "solar elevation"; 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 source "ATL03g ATBD"; String origname "solar_elevation"; String fullnamepath "/profile_1/high_rate/solar_elevation"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_sig_count_hi { String units "counts"; String contentType "referenceInformation"; String long_name "Count of Signa Heightsl - High"; String description "Count of high-confidence signal photons"; String source "ATL03 ATBD, Section 5"; String origname "sig_count_hi"; String fullnamepath "/profile_1/high_rate/sig_count_hi"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_dtime_fac2 { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "dead_time_factor2"; String description "Dead time correction factor for surface signal computed from ATBD equation 2.1."; String source "Atmosphere ATBD"; String origname "dtime_fac2"; String fullnamepath "/profile_1/high_rate/dtime_fac2"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_prof_dist_x { String units "meters"; String contentType "referenceInformation"; String long_name "Along Track Distance"; String description "Along-track distance from the equator crossing."; String source "ATL03g ATBD, Section 3.4"; String origname "prof_dist_x"; String fullnamepath "/profile_1/high_rate/prof_dist_x"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_aclr_true { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Clear sky ASR"; String description "Clear sky initial surface reflectance based on GOME climatology or Cox-Munk model: see Fig 3.6.5 of the Atmosphere ATBD."; String source "Atmosphere ATBD"; String origname "aclr_true"; String fullnamepath "/profile_1/high_rate/aclr_true"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_apparent_surf_reflec { String units "1"; String contentType "modelResult"; String long_name "Apparent Surface Reflectance"; String description "Apparent Surface Reflectance (ASR): Eqn 4.7"; String source "Atmosphere ATBD"; String origname "apparent_surf_reflec"; String fullnamepath "/profile_1/high_rate/apparent_surf_reflec"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_pce_mframe_cnt { String units "counts"; String contentType "referenceInformation"; String long_name "PCE Major frame counter"; 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 source "ATL02"; String origname "pce_mframe_cnt"; String fullnamepath "/profile_1/high_rate/pce_mframe_cnt"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_cloud_fold_flag { Int16 _FillValue 127; String units "1"; String contentType "modelResult"; String long_name "Cloud Folding Flag"; 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 source "Atmosphere ATBD"; String flag_meanings "no_folding goes5_indicates profile_indicates both_indicate"; Int16 flag_values 0, 1, 2, 3; Int16 valid_min 0; Int16 valid_max 3; String origname "cloud_fold_flag"; String fullnamepath "/profile_1/high_rate/cloud_fold_flag"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_sig_h_sdev_low { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "referenceInformation"; String long_name "SDev of Signal Heights -Low"; String description "SDev of the heights of low-confidence signal photons"; String source "ATL03 ATBD, Section 5"; String origname "sig_h_sdev_low"; String fullnamepath "/profile_1/high_rate/sig_h_sdev_low"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_layer_con { String units "1"; String contentType "modelResult"; String long_name "Layer confidence flag"; String description "Layer confidence flag for each layer"; String source "Atmosphere ATBD"; Int32 valid_min 0; Int32 valid_max 10000; String origname "layer_con"; String fullnamepath "/profile_1/high_rate/layer_con"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_bsnow_h_dens { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "modelResult"; String long_name "Blowing snow h from density"; String description "Blowing snow layer height from density"; String source "Atmosphere ATBD"; String origname "bsnow_h_dens"; String fullnamepath "/profile_1/high_rate/bsnow_h_dens"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_sig_h_mean_low { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "referenceInformation"; String long_name "Mean of Signal Heights - Low"; String description "Mean height of low-confidence signal photons"; String source "ATL03 ATBD, Section 5"; String origname "sig_h_mean_low"; String fullnamepath "/profile_1/high_rate/sig_h_mean_low"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_backg_theoret { Float32 _FillValue 3.402823466e+38; String units "photons/bin"; String contentType "modelResult"; String long_name "Background (Theoretical)"; String description "The theoretical background, in photons/bin."; String source "Atmosphere ATBD"; String origname "backg_theoret"; String fullnamepath "/profile_1/high_rate/backg_theoret"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_sig_h_sdev_med { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "referenceInformation"; String long_name "SDev of Signa Heights -Med"; String description "SDev of the heights of medium-confidence signal photons"; String source "ATL03 ATBD, Section 5"; String origname "sig_h_sdev_med"; String fullnamepath "/profile_1/high_rate/sig_h_sdev_med"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_surface_sig { String units "counts"; String contentType "modelResult"; String long_name "Surface signal count"; String description "Number of photons in the detected surface bin."; String source "Atmosphere ATBD section 3.3.5"; String origname "surface_sig"; String fullnamepath "/profile_1/high_rate/surface_sig"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_layer_ib { String contentType "modelResult"; String long_name "Layer integrated backscatter"; String description "Layer integrated backscatter"; String source "Atmosphere ATBD"; Float32 _FillValue 3.402823466e+38; String units "1"; String origname "layer_ib"; String fullnamepath "/profile_1/high_rate/layer_ib"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_high_rate_snow_ice { Int32 _FillValue 2147483647; String units "1"; String contentType "modelResult"; String long_name "Snow Ice Flag"; String description "NOAA snow-ice flag. 0=ice free water; 1=snow free land; 2=snow; 3=ice"; String source "Atmosphere ATBD"; String flag_meanings "ice_free_water snow_free_land snow ice"; Int32 flag_values 0, 1, 2, 3; String origname "snow_ice"; String fullnamepath "/profile_1/high_rate/snow_ice"; String coordinates "profile_1_high_rate_delta_time profile_1_high_rate_latitude profile_1_high_rate_longitude"; } profile_1_low_rate_met_tropt { Float32 _FillValue 3.402823466e+38; String units "K"; String contentType "referenceInformation"; String long_name "blended_tropopause_temperature"; String standard_name "temperature"; String description "Tropopause temperature (k)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_tropt"; String fullnamepath "/profile_1/low_rate/met_tropt"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_latitude profile_1_low_rate_longitude"; } profile_1_low_rate_mol_backs_folded { String units "m-1 sr-1"; String contentType "modelResult"; String long_name "Folded molecular transmission profile"; String description "Folded molecular transmission profile, 30 m resolution, , m-1 sr-1; 20 km to -1 km (equation 3.17)"; String source "Atmosphere ATBD"; String origname "mol_backs_folded"; String fullnamepath "/profile_1/low_rate/mol_backs_folded"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_latitude profile_1_low_rate_longitude"; } profile_1_low_rate_molec_bkscat_p { String units "Pa"; String contentType "modelResult"; String long_name "Pressure profile"; String description "Pressure profiles from 20 km to -1 km"; String source "Atmosphere ATBD"; String origname "molec_bkscat_p"; String fullnamepath "/profile_1/low_rate/molec_bkscat_p"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_latitude profile_1_low_rate_longitude"; } profile_1_low_rate_met_t2m { Float32 _FillValue 3.402823466e+38; String units "K"; String contentType "referenceInformation"; String long_name "temperature_at_2m"; String standard_name "temperature"; String description "Temperature at 2m above the displacement height (K)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_t2m"; String fullnamepath "/profile_1/low_rate/met_t2m"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_latitude profile_1_low_rate_longitude"; } profile_1_low_rate_met_u2m { Float32 _FillValue 3.402823466e+38; String units "m s-1"; String contentType "referenceInformation"; String long_name "Eastward_wind_at_2m"; String standard_name "eastward_wind"; String description "Eastward wind at 2m above the displacement height (m/s-1)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_u2m"; String fullnamepath "/profile_1/low_rate/met_u2m"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_latitude profile_1_low_rate_longitude"; } profile_1_low_rate_met_u10m { Float32 _FillValue 3.402823466e+38; String units "m s-1"; String contentType "referenceInformation"; String long_name "Eastward_wind_at_10m"; String standard_name "eastward_wind"; String description "Eastward wind at 10m above the displacement height (m/s-1)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_u10m"; String fullnamepath "/profile_1/low_rate/met_u10m"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_latitude profile_1_low_rate_longitude"; } profile_1_low_rate_molec_trans { String units "1"; String contentType "modelResult"; String long_name "Molecular transmission profile"; String description "Molecular transmission profile, 30 m resolution, 20 km to -1 km"; String source "Atmosphere ATBD"; String origname "molec_trans"; String fullnamepath "/profile_1/low_rate/molec_trans"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_latitude profile_1_low_rate_longitude"; } profile_1_low_rate_met_cldprs { Float32 _FillValue 3.402823466e+38; String units "Pa"; String contentType "referenceInformation"; String long_name "cloud_top_pressure"; String standard_name "pressure"; String description "Pressure of the highest cloud top at this location from GEOS5 data"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_cldprs"; String fullnamepath "/profile_1/low_rate/met_cldprs"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_latitude profile_1_low_rate_longitude"; } profile_1_low_rate_bsnow_con { Int16 _FillValue 127; String units "1"; String contentType "modelResult"; String long_name "Blowing snow confidence"; String description "Blowing snow confidence. -3=surface not detected; -2=no surface wind;-1=no scattering layer found; 0=no top layer found; 1=none-little; 2=weak; 3=moderate; 4=moderate-high; 5=high; 6=very high"; String source "Atmosphere ATBD"; String flag_meanings "surface_not_detected no_surface_wind no_scattering_layer_found no_top_layer_found none_little weak moderate moderate_high high very_high"; Int16 flag_values -3, -2, -1, 0, 1, 2, 3, 4, 5, 6; Int16 valid_min -3; Int16 valid_max 6; String origname "bsnow_con"; String fullnamepath "/profile_1/low_rate/bsnow_con"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_latitude profile_1_low_rate_longitude"; } profile_1_low_rate_bsnow_psc { String units "1"; String contentType "modelResult"; String long_name "Blowing snow PSC flag"; String description "Blowing snow PSC flag. Indicates the potential for polar stratospheric clouds to affect the blowing snow retrieval, where 0=none and 3=maximum. This flag is a function of month and hemisphere and is only applied poleward of 60 north and south."; String source "Atmosphere ATBD Section 4.5"; String flag_meanings "none slight moderate maximum_bsnow_PSC_affected"; Int16 flag_values 0, 1, 2, 3; Int16 valid_min 0; Int16 valid_max 3; String origname "bsnow_psc"; String fullnamepath "/profile_1/low_rate/bsnow_psc"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_latitude profile_1_low_rate_longitude"; } profile_1_low_rate_met_v50m { Float32 _FillValue 3.402823466e+38; String units "m s-1"; String contentType "referenceInformation"; String long_name "northward_wind_at_50m"; String standard_name "northward_wind"; String description "Northward wind at 50m above the displacement height (m/s-1)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_v50m"; String fullnamepath "/profile_1/low_rate/met_v50m"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_latitude profile_1_low_rate_longitude"; } profile_1_low_rate_bsnow_h { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "modelResult"; String long_name "Blowing snow top h"; String description "Blowing snow layer top height"; String source "Atmosphere ATBD"; String origname "bsnow_h"; String fullnamepath "/profile_1/low_rate/bsnow_h"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_latitude profile_1_low_rate_longitude"; } profile_1_low_rate_met_v10m { Float32 _FillValue 3.402823466e+38; String units "m s-1"; String contentType "referenceInformation"; String long_name "Northward_wind_at_10m"; String standard_name "northward_wind"; String description "Northward wind at 10m above the displacement height (m/s-1)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_v10m"; String fullnamepath "/profile_1/low_rate/met_v10m"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_latitude profile_1_low_rate_longitude"; } profile_1_low_rate_longitude { String units "degrees_east"; String contentType "referenceInformation"; String long_name "Longitude of the ATM histogram"; String standard_name "longitude"; String description "Longitude at the the top of the ATM histogram, WGS84, East=+, derived from the geolocation of the ATM range window."; String source "ATL03g ATBD"; Float64 valid_min -180.00000000000000; Float64 valid_max 180.00000000000000; String origname "longitude"; String fullnamepath "/profile_1/low_rate/longitude"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_latitude"; } profile_1_low_rate_met_ps { Float32 _FillValue 3.402823466e+38; String units "Pa"; String contentType "referenceInformation"; String long_name "Surface Pressure"; String standard_name "pressure"; String description "Surface Pressure (Pa)"; String source "GEOS5 FPIT 3D DFPITI3NVASM"; String origname "met_ps"; String fullnamepath "/profile_1/low_rate/met_ps"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_latitude profile_1_low_rate_longitude"; } profile_1_low_rate_latitude { String units "degrees_north"; String long_name "Latitude of the ATM histogram"; String standard_name "latitude"; String description "Latitude at the the top of the ATM histogram, WGS84, North=+, Derived from the geolocation of the ATM range window."; String source "ATL03g ATBD"; Float64 valid_min -90.000000000000000; Float64 valid_max 90.000000000000000; String contentType "referenceInformation"; String origname "latitude"; String fullnamepath "/profile_1/low_rate/latitude"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_longitude"; } profile_1_low_rate_surf_type { String units "1"; String contentType "referenceInformation"; String long_name "surface type"; 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 source "ATL03 ATBD, Section 4"; String flag_meanings "not_type is_type"; Int16 flag_values 0, 1; Int16 valid_min 0; Int16 valid_max 1; String origname "surf_type"; String fullnamepath "/profile_1/low_rate/surf_type"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_latitude profile_1_low_rate_longitude"; } profile_1_low_rate_met_qv10m { Float32 _FillValue 3.402823466e+38; String units "kg kg-1"; String contentType "referenceInformation"; String long_name "specific_humidity_at_10m"; String standard_name "specific_humidity"; String description "Specific humidity at 10 m above the displacement height (Pa)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_qv10m"; String fullnamepath "/profile_1/low_rate/met_qv10m"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_latitude profile_1_low_rate_longitude"; } profile_1_low_rate_bsnow_od { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Blowing snow OD"; String description "Blowing snow layer optical depth"; String source "Atmosphere ATBD"; String origname "bsnow_od"; String fullnamepath "/profile_1/low_rate/bsnow_od"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_latitude profile_1_low_rate_longitude"; } profile_1_low_rate_met_tqi { Float32 _FillValue 3.402823466e+38; String units "kg m2"; String contentType "referenceInformation"; String long_name "cloud_ice"; String description "Total column cloud ice (Kg/m2)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_tqi"; String fullnamepath "/profile_1/low_rate/met_tqi"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_latitude profile_1_low_rate_longitude"; } profile_1_low_rate_met_t10m { Float32 _FillValue 3.402823466e+38; String units "K"; String contentType "referenceInformation"; String long_name "temperature_at_10m"; String standard_name "temperature"; String description "Temperature at 10m above the displacement height (K)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_t10m"; String fullnamepath "/profile_1/low_rate/met_t10m"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_latitude profile_1_low_rate_longitude"; } profile_1_low_rate_cal_c { String units "Photons*m^3 *sr / J"; String contentType "modelResult"; String long_name "Calibration Constant"; String description "Calibration Constant (for each beam at 1 Hz)"; String source "Atmosphere ATBD"; String origname "cal_c"; String fullnamepath "/profile_1/low_rate/cal_c"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_latitude profile_1_low_rate_longitude"; } profile_1_low_rate_met_tql { Float32 _FillValue 3.402823466e+38; String units "kg m2"; String contentType "referenceInformation"; String long_name "cloud_liquid_water"; String description "Total column cloud liquid water (kg/m2)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_tql"; String fullnamepath "/profile_1/low_rate/met_tql"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_latitude profile_1_low_rate_longitude"; } profile_1_low_rate_met_v2m { Float32 _FillValue 3.402823466e+38; String units "m s-1"; String contentType "referenceInformation"; String long_name "Northward_wind_at_2m"; String standard_name "northward_wind"; String description "Northward wind at 2m above the displacement height (m/s-1)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_v2m"; String fullnamepath "/profile_1/low_rate/met_v2m"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_latitude profile_1_low_rate_longitude"; } profile_1_low_rate_met_ts { Float32 _FillValue 3.402823466e+38; String units "K"; String contentType "referenceInformation"; String long_name "surface_temperature"; String standard_name "temperature"; String description "Surface skin temperature (K)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_ts"; String fullnamepath "/profile_1/low_rate/met_ts"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_latitude profile_1_low_rate_longitude"; } profile_1_low_rate_met_qv2m { Float32 _FillValue 3.402823466e+38; String units "kg kg-1"; String contentType "referenceInformation"; String long_name "specific_humidity_at_2m"; String standard_name "specific_humidity"; String description "Specific humidity at 2 m above the displacement height (Pa)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_qv2m"; String fullnamepath "/profile_1/low_rate/met_qv2m"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_latitude profile_1_low_rate_longitude"; } profile_1_low_rate_molec_bkscat_t { String units "degreesC"; String contentType "modelResult"; String long_name "Temperature profile"; String description "Temperature profiles from 20 km to -1 km"; String source "Atmosphere ATBD"; String origname "molec_bkscat_t"; String fullnamepath "/profile_1/low_rate/molec_bkscat_t"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_latitude profile_1_low_rate_longitude"; } profile_1_low_rate_met_u50m { Float32 _FillValue 3.402823466e+38; String units "m s-1"; String contentType "referenceInformation"; String long_name "Eastward_wind_at_50m"; String standard_name "eastward_wind"; String description "Eastward wind at 50m above the displacement height (m/s-1)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_u50m"; String fullnamepath "/profile_1/low_rate/met_u50m"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_latitude profile_1_low_rate_longitude"; } profile_1_low_rate_met_slp { String units "Pa"; String contentType "modelResult"; String long_name "sea_level_pressure"; String standard_name "sea_level_pressure"; String description "sea-level pressure (Pa)"; String source "GEOS5 FPIT 3D DFPITI3NVASM"; String origname "met_slp"; String fullnamepath "/profile_1/low_rate/met_slp"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_latitude profile_1_low_rate_longitude"; } profile_1_low_rate_met_troppb { Float32 _FillValue 3.402823466e+38; String units "Pa"; String contentType "referenceInformation"; String long_name "blended_tropopause_pressure"; String standard_name "pressure"; String description "Blended tropopause pressure (pa)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_troppb"; String fullnamepath "/profile_1/low_rate/met_troppb"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_latitude profile_1_low_rate_longitude"; } profile_1_low_rate_bsnow_prob { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Blowing Snow Probability"; String description "The probability of blowing snow based on meteorological data."; String source "Atmosphere ATBD Section 4.5.1"; String origname "bsnow_prob"; String fullnamepath "/profile_1/low_rate/bsnow_prob"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_latitude profile_1_low_rate_longitude"; } profile_1_low_rate_mol_backscatter { String units "m-1 sr-1"; String contentType "modelResult"; String long_name "Molecular backscatter profile"; String description "Molecular backscatter profile, 30 m resolution, 20 km to -1 km"; String source "Atmosphere ATBD"; String origname "mol_backscatter"; String fullnamepath "/profile_1/low_rate/mol_backscatter"; String coordinates "profile_1_low_rate_delta_time profile_1_low_rate_latitude profile_1_low_rate_longitude"; } profile_3_bckgrd_atlas_bckgrd_counts_reduced { String units "counts"; String contentType "modelResult"; String long_name "ATLAS 50-shot background count - reduced"; 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 source "ATL03 ATBD Section 7.3"; 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_counts { String units "counts"; String contentType "modelResult"; String long_name "ATLAS 50-shot background count"; String description "Onboard 50 shot background (200 Hz) sum of photon events within the altimetric range window."; String source "ATL03 ATBD Section 7.3"; 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_hist_top { String units "meters"; String contentType "modelResult"; String long_name "Top of the altimetric range window"; 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 source "ATL03 ATBD Section 7.3"; 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 units "meters"; String contentType "modelResult"; String long_name "Altimetric range window width"; 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 source "ATL03 ATBD Section 7.3"; 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 units "meters"; String contentType "modelResult"; String long_name "Altimetric range window height - reduced"; 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 source "ATL03 ATBD Section 7.3"; 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_rate { String units "counts / second"; String contentType "modelResult"; String long_name "Background count rate based on the ATLAS 50-shot sum"; 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 source "ATL03 ATBD Section 7.3"; 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 units "counts"; String contentType "referenceInformation"; String long_name "PCE Major frame counter"; 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 source "ATL02"; String origname "pce_mframe_cnt"; String fullnamepath "/profile_3/bckgrd_atlas/pce_mframe_cnt"; String coordinates "profile_3_bckgrd_atlas_delta_time"; } profile_3_high_rate_sig_count_med { String units "counts"; String long_name "Count of Signal Heights - Medium"; String description "Count of medium-confidence signal photons"; String source "ATL03 ATBD, Section 5"; String contentType "referenceInformation"; String origname "sig_count_med"; String fullnamepath "/profile_3/high_rate/sig_count_med"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_surface_h_dens { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "modelResult"; String long_name "Surface h from density"; String description "Surface height from density"; String source "Atmosphere ATBD"; String origname "surface_h_dens"; String fullnamepath "/profile_3/high_rate/surface_h_dens"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_dem_flag { Int16 _FillValue 127; String units "1"; String contentType "referenceInformation"; String long_name "dem source flag"; String description "Indicates source of the DEM height. Values: 0=None, 1=GIMP, 2=GMTED, 3=MSS, 4=Antarctic."; String source "Atmosphere ATBD"; String flag_meanings "none gimp gmted mss antarctic"; Int16 flag_values 0, 1, 2, 3, 4; Int16 valid_min 0; Int16 valid_max 4; String origname "dem_flag"; String fullnamepath "/profile_3/high_rate/dem_flag"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_msw_flag { Int16 _FillValue 127; String units "1"; String contentType "modelResult"; String long_name "Multiple Scattering Warning Flag"; String description "Multiple Scattering warning flag. The multiple scattering warning flag (ATL09 parameter msw_flag) has values from -1 to 5 where zero means no multiple scattering and 5 the greatest. If no layers were detected, then msw_flag = 0. If blowing snow is detected and its estimated optical depth is greater than or equal to 0.5, then msw_flag = 5. If the blowing snow optical depth is less than 0.5, then msw_flag = 4. If no blowing snow is detected but there are cloud or aerosol layers detected, the msw_flag assumes values of 1 to 3 based on the height of the bottom of the lowest layer: < 1 km, msw_flag = 3; 1-3 km, msw_flag = 2; > 3km, msw_flag = 1. A value of -1 indicates that the signal to noise of the data was too low to reliably ascertain the presence of cloud or blowing snow. We expect values of -1 to occur only during daylight."; String source "Atmosphere ATBD"; String flag_meanings "cannot_determine no_layers layer_gt_3km layer_between_1_and_3_km layer_lt_1km blow_snow_od_lt_0.5 blow_snow_od_gt_0.5"; Int16 flag_values -1, 0, 1, 2, 3, 4, 5; Int16 valid_min -1; Int16 valid_max 5; String origname "msw_flag"; String fullnamepath "/profile_3/high_rate/msw_flag"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_cloud_flag_atm { String units "1"; String contentType "modelResult"; String long_name "Cloud Flag Atm"; String description "Number of layers found from the backscatter profile using the DDA layer finder."; String source "Atmosphere ATBD"; Int16 valid_min 0; Int16 valid_max 10; String origname "cloud_flag_atm"; String fullnamepath "/profile_3/high_rate/cloud_flag_atm"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_ocean_surf_reflec { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Ocean Surface Reflectance"; String description "Ocean Surface Reflectance from Eqn 4.10 based on the Cox-Munk model."; String source "Atmosphere ATBD"; String origname "ocean_surf_reflec"; String fullnamepath "/profile_3/high_rate/ocean_surf_reflec"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_sig_count_low { String units "counts"; String contentType "referenceInformation"; String long_name "Count of Signal Heights - Low"; String description "Count of low-confidence signal photons"; String source "ATL03 ATBD, Section 5"; String origname "sig_count_low"; String fullnamepath "/profile_3/high_rate/sig_count_low"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_layer_attr { String units "1"; String contentType "modelResult"; String long_name "Layer attribute flag"; String description "Layer attribute flag for each of the possible 10 layers. Indicates (0) no_layer (1) cloud, (2) aerosol or (3) unknown."; String source "Atmosphere ATBD"; String flag_meanings "no_layer cloud aerosol unknown"; Int16 flag_values 0, 1, 2, 3; Int16 valid_min 0; Int16 valid_max 3; String origname "layer_attr"; String fullnamepath "/profile_3/high_rate/layer_attr"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_sig_h_sdev_hi { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "referenceInformation"; String long_name "SDev of Signal Heights -High"; String description "SDev of the heights of high-confidence signal photons"; String source "ATL03 ATBD, Section 5"; String origname "sig_h_sdev_hi"; String fullnamepath "/profile_3/high_rate/sig_h_sdev_hi"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_bsnow_con { Int16 _FillValue 127; String units "1"; String contentType "modelResult"; String long_name "Blowing snow confidence"; String description "Blowing snow confidence. -3=surface not detected; -2=no surface wind;-1=no scattering layer found; 0=no top layer found; 1=none-little; 2=weak; 3=moderate; 4=moderate-high; 5=high; 6=very high"; String source "Atmosphere ATBD"; String flag_meanings "surface_not_detected no_surface_wind no_scattering_layer_found no_top_layer_found none_little weak moderate moderate_high high very_high"; Int16 flag_values -3, -2, -1, 0, 1, 2, 3, 4, 5, 6; Int16 valid_min -3; Int16 valid_max 6; String origname "bsnow_con"; String fullnamepath "/profile_3/high_rate/bsnow_con"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_layer_flag { String units "1"; String contentType "qualityInformation"; String long_name "Consolidated cloud flag"; String description "This flag is a combination of multiple flags (cloud_flag_atm, cloud_flag_asr, and bsnow_con) and takes daytime/nighttime into consideration. A value of 1 means clouds or blowing snow are likely present. A value of 0 indicates the likely absence of clouds or blowing snow."; String source "Atmosphere ATBD"; String flag_meanings "likely_clear likely_cloudy"; Int16 flag_values 0, 1; Int16 valid_min 0; Int16 valid_max 1; String origname "layer_flag"; String fullnamepath "/profile_3/high_rate/layer_flag"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_dtime_fac1 { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "dead_time_factor1"; String description "Dead time correction factor for surface signal computed from radiometric lookup table."; String source "Atmosphere ATBD"; String origname "dtime_fac1"; String fullnamepath "/profile_3/high_rate/dtime_fac1"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_bsnow_psc { String units "1"; String contentType "modelResult"; String long_name "Blowing snow PSC flag"; String description "Blowing snow PSC flag. Indicates the potential for polar stratospheric clouds to affect the blowing snow retrieval, where 0=none and 3=maximum. This flag is a function of month and hemisphere and is only applied poleward of 60 north and south."; String source "Atmosphere ATBD Section 4.5"; String flag_meanings "none slight moderate maximum_bsnow_PSC_affected"; Int16 flag_values 0, 1, 2, 3; Int16 valid_min 0; Int16 valid_max 3; String origname "bsnow_psc"; String fullnamepath "/profile_3/high_rate/bsnow_psc"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_surf_refl_true { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Estimated Surface Reflectance"; String description "The value of the clear-sky surface reflectivity to use in the compuation of total column optical depth and cloud detection from the measures apparent surface reflectance (ASR)."; String source "Atmosphere ATBD"; String origname "surf_refl_true"; String fullnamepath "/profile_3/high_rate/surf_refl_true"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_bsnow_h { String contentType "modelResult"; String long_name "Blowing snow top h"; String description "Blowing snow layer top height"; String source "Atmosphere ATBD"; Float32 _FillValue 3.402823466e+38; String units "meters"; String origname "bsnow_h"; String fullnamepath "/profile_3/high_rate/bsnow_h"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_sig_h_mean_hi { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "referenceInformation"; String long_name "Mean of SignalHeights - High"; String description "Mean height of high-confidence signal photons"; String source "ATL03 ATBD, Section 5"; String origname "sig_h_mean_hi"; String fullnamepath "/profile_3/high_rate/sig_h_mean_hi"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_beam_azimuth { Float32 _FillValue 3.402823466e+38; String units "degrees_east"; String contentType "referenceInformation"; String long_name "beam azimuth"; String description "Beam azimuth"; String source "ATL03 ATBD"; String origname "beam_azimuth"; String fullnamepath "/profile_3/high_rate/beam_azimuth"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_range_to_top { String units "meters"; String contentType "referenceInformation"; String long_name "Range"; String description "Range from the spacecraft to the top of the atmosphere range window."; String source "Atmosphere ATBD"; String origname "range_to_top"; String fullnamepath "/profile_3/high_rate/range_to_top"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_solar_azimuth { String units "degrees_east"; String contentType "referenceInformation"; String long_name "solar azimuth"; String description "The direction, eastwards from north, of the sun vector as seen by an observer at the laser ground spot."; String source "ATL03g ATBD"; String origname "solar_azimuth"; String fullnamepath "/profile_3/high_rate/solar_azimuth"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_longitude { String units "degrees_east"; String contentType "referenceInformation"; String long_name "Longitude of the ATM histogram"; String standard_name "longitude"; String description "Longitude at the the top of the ATM histogram, WGS84, East=+, derived from the geolocation of the ATM range window."; String source "ATL03g ATBD"; Float64 valid_min -180.00000000000000; Float64 valid_max 180.00000000000000; String origname "longitude"; String fullnamepath "/profile_3/high_rate/longitude"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude"; } profile_3_high_rate_latitude { String units "degrees_north"; String contentType "referenceInformation"; String long_name "Latitude of the ATM histogram"; String standard_name "latitude"; String description "Latitude at the the top of the ATM histogram, WGS84, North=+, Derived from the geolocation of the ATM range window."; String source "ATL03g ATBD"; Float64 valid_min -90.000000000000000; Float64 valid_max 90.000000000000000; String origname "latitude"; String fullnamepath "/profile_3/high_rate/latitude"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_longitude"; } profile_3_high_rate_surf_type { String units "1"; String contentType "referenceInformation"; String long_name "surface type"; 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 source "ATL03 ATBD, Section 4"; String flag_meanings "not_type is_type"; Int16 flag_values 0, 1; Int16 valid_min 0; Int16 valid_max 1; String origname "surf_type"; String fullnamepath "/profile_3/high_rate/surf_type"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_density_pass1 { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Density profile - pass1"; String description "Density profiles from pass 1."; String source "Atmosphere ATBD Part II"; String origname "density_pass1"; String fullnamepath "/profile_3/high_rate/density_pass1"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_column_od_asr_qf { Int16 _FillValue 127; String units "1"; String contentType "modelResult"; String long_name "Optical depth ASR quality"; String description "Total column optical depth from ASR quality flag. The total atmosphere column particulate optical depth can be computed from the apparent surface reflectance if the actual surface reflectance is well known. The flag indicates the surface type over which the flag is computed in the order from unable to compute (0 - no_surface_signal) to best quality (4=water)."; String source "Atmosphere ATBD"; String flag_meanings "no_signal land sea_ice land_ice water"; Int16 flag_values 0, 1, 2, 3, 4; String origname "column_od_asr_qf"; String fullnamepath "/profile_3/high_rate/column_od_asr_qf"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_bsnow_od { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Blowing snow OD"; String description "Blowing snow layer optical depth"; String source "Atmosphere ATBD"; String origname "bsnow_od"; String fullnamepath "/profile_3/high_rate/bsnow_od"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_surf_type_igbp { String units "1"; String contentType "referenceInformation"; String long_name "IGBP Surface Type"; String description "IGBP Surface Type"; String source "Atmosphere ATBD, IGBP Surface Type"; String origname "surf_type_igbp"; String fullnamepath "/profile_3/high_rate/surf_type_igbp"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_backg_c { String units "counts"; String contentType "modelResult"; String long_name "Background"; String description "Background, in photons/bin, used in the NRB Computation."; String source "Atmosphere ATBD"; String origname "backg_c"; String fullnamepath "/profile_3/high_rate/backg_c"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_sig_h_mean_med { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "referenceInformation"; String long_name "Mean of Signa Heightsl - Med"; String description "Mean height of medium-confidence signal photons"; String source "ATL03 ATBD, Section 5"; String origname "sig_h_mean_med"; String fullnamepath "/profile_3/high_rate/sig_h_mean_med"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_dem_h { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "referenceInformation"; String long_name "DEM Height"; String description "Best available DEM (in priority of GIMP/ANTARCTIC/GMTED/MSS) value at the geolocation point."; String source "Atmosphere ATBD"; String origname "dem_h"; String fullnamepath "/profile_3/high_rate/dem_h"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_cloud_flag_asr { Int16 _FillValue 127; String units "1"; String contentType "modelResult"; String long_name "Cloud Flag ASR"; String description "Cloud flag (probability) from apparent surface reflectance. 0=clear with high confidence; 1=clear with medium confidence; 2=clear with low confidence; 3=cloudy with low confidence; 4=cloudy with medium confidence; 5=cloudy with high confidence; 6=unknown"; String source "Atmosphere ATBD"; String flag_meanings "clear_with_high_confidence clear_with_medium_confidence clear_with_low_confidence cloudy_with_low_confidence cloudy_with_medium_confidence cloudy_with_high_confidence unknown"; Int16 flag_values 0, 1, 2, 3, 4, 5, 6; Int16 valid_min 0; Int16 valid_max 6; String origname "cloud_flag_asr"; String fullnamepath "/profile_3/high_rate/cloud_flag_asr"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_tx_pulse_energy { Float32 _FillValue 3.402823466e+38; String units "Joules"; String contentType "referenceInformation"; String long_name "Transmit Pulse Energy"; String description "Transmit energy, from the laser internal energy monitor, split into per-beam measurements."; String source "ATL02 ATBD, Section 7.2"; String origname "tx_pulse_energy"; String fullnamepath "/profile_3/high_rate/tx_pulse_energy"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_layer_bot { Float32 _FillValue 3.402823466e+38; String units "meter"; String contentType "modelResult"; String long_name "Height layer bottoms"; String description "Height of bottom of detected layers"; String source "Atmosphere ATBD"; String origname "layer_bot"; String fullnamepath "/profile_3/high_rate/layer_bot"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_cab_prof { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Calibrated Attenuated Backscatter"; String description "Calibrated Attenuated Backscatter from 20 to -1 km with vertical resolution of 30m (eqn 4.1)"; String source "Atmosphere ATBD"; String origname "cab_prof"; String fullnamepath "/profile_3/high_rate/cab_prof"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_density_pass2 { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Density profile - pass2"; String description "Density profiles from pass 2."; String source "Atmosphere ATBD Part II"; String origname "density_pass2"; String fullnamepath "/profile_3/high_rate/density_pass2"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_surface_height { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "modelResult"; String long_name "Surface height"; String description "Height of the detected surface bin."; String source "Atmosphere ATBD section 3.3.5"; String origname "surface_height"; String fullnamepath "/profile_3/high_rate/surface_height"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_bsnow_dens { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Blowing snow density"; String description "Blowing snow layer density"; String source "Atmosphere ATBD"; String origname "bsnow_dens"; String fullnamepath "/profile_3/high_rate/bsnow_dens"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_layer_top { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "modelResult"; String long_name "Height layer tops"; String description "Height of top of detected layers"; String source "Atmosphere ATBD"; String origname "layer_top"; String fullnamepath "/profile_3/high_rate/layer_top"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_column_od_asr { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Optical depth from ASR"; String description "Optical depth of atmosphere column based on apparent surface reflectance and the assumed actual surface reflectance."; String source "Atmosphere ATBD"; String origname "column_od_asr"; String fullnamepath "/profile_3/high_rate/column_od_asr"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_layer_dens { String units "1"; String contentType "modelResult"; String long_name "Layer Density"; String description "Layer Density"; String source "Atmosphere ATBD"; String origname "layer_dens"; String fullnamepath "/profile_3/high_rate/layer_dens"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_prof_dist_y { String units "meters"; String contentType "referenceInformation"; String long_name "Across Track Distance from RGT"; String description "Across-Track distance from the reference ground track."; String source "ATL03g ATBD, Section 3.4"; String origname "prof_dist_y"; String fullnamepath "/profile_3/high_rate/prof_dist_y"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_beam_elevation { Float32 _FillValue 3.402823466e+38; String units "degrees"; String contentType "referenceInformation"; String long_name "beam elevation"; String description "Beam elevation"; String source "ATL03 ATBD"; String origname "beam_elevation"; String fullnamepath "/profile_3/high_rate/beam_elevation"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_segment_id { String units "1"; String contentType "referenceInformation"; String long_name "along-track segment ID number."; 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 source "ATL03 ATBD, Section 3.1"; String origname "segment_id"; String fullnamepath "/profile_3/high_rate/segment_id"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_surface_bin { Int32 _FillValue 2147483647; String units "1"; String contentType "modelResult"; String long_name "Surface bin"; String description "Vertially aligned, NRB bin number of the detected surface return."; String source "Atmosphere ATBD section 3.3.5"; String origname "surface_bin"; String fullnamepath "/profile_3/high_rate/surface_bin"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_solar_elevation { String units "degrees"; String contentType "referenceInformation"; String long_name "solar elevation"; 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 source "ATL03g ATBD"; String origname "solar_elevation"; String fullnamepath "/profile_3/high_rate/solar_elevation"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_sig_count_hi { String units "counts"; String contentType "referenceInformation"; String long_name "Count of Signa Heightsl - High"; String description "Count of high-confidence signal photons"; String source "ATL03 ATBD, Section 5"; String origname "sig_count_hi"; String fullnamepath "/profile_3/high_rate/sig_count_hi"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_dtime_fac2 { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "dead_time_factor2"; String description "Dead time correction factor for surface signal computed from ATBD equation 2.1."; String source "Atmosphere ATBD"; String origname "dtime_fac2"; String fullnamepath "/profile_3/high_rate/dtime_fac2"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_prof_dist_x { String units "meters"; String contentType "referenceInformation"; String long_name "Along Track Distance"; String description "Along-track distance from the equator crossing."; String source "ATL03g ATBD, Section 3.4"; String origname "prof_dist_x"; String fullnamepath "/profile_3/high_rate/prof_dist_x"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_aclr_true { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Clear sky ASR"; String description "Clear sky initial surface reflectance based on GOME climatology or Cox-Munk model: see Fig 3.6.5 of the Atmosphere ATBD."; String source "Atmosphere ATBD"; String origname "aclr_true"; String fullnamepath "/profile_3/high_rate/aclr_true"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_apparent_surf_reflec { String units "1"; String contentType "modelResult"; String long_name "Apparent Surface Reflectance"; String description "Apparent Surface Reflectance (ASR): Eqn 4.7"; String source "Atmosphere ATBD"; String origname "apparent_surf_reflec"; String fullnamepath "/profile_3/high_rate/apparent_surf_reflec"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_pce_mframe_cnt { String units "counts"; String contentType "referenceInformation"; String long_name "PCE Major frame counter"; 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 source "ATL02"; String origname "pce_mframe_cnt"; String fullnamepath "/profile_3/high_rate/pce_mframe_cnt"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_cloud_fold_flag { Int16 _FillValue 127; String units "1"; String contentType "modelResult"; String long_name "Cloud Folding Flag"; 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 source "Atmosphere ATBD"; String flag_meanings "no_folding goes5_indicates profile_indicates both_indicate"; Int16 flag_values 0, 1, 2, 3; Int16 valid_min 0; Int16 valid_max 3; String origname "cloud_fold_flag"; String fullnamepath "/profile_3/high_rate/cloud_fold_flag"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_sig_h_sdev_low { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "referenceInformation"; String long_name "SDev of Signal Heights -Low"; String description "SDev of the heights of low-confidence signal photons"; String source "ATL03 ATBD, Section 5"; String origname "sig_h_sdev_low"; String fullnamepath "/profile_3/high_rate/sig_h_sdev_low"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_layer_con { String units "1"; String contentType "modelResult"; String long_name "Layer confidence flag"; String description "Layer confidence flag for each layer"; String source "Atmosphere ATBD"; Int32 valid_min 0; Int32 valid_max 10000; String origname "layer_con"; String fullnamepath "/profile_3/high_rate/layer_con"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_bsnow_h_dens { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "modelResult"; String long_name "Blowing snow h from density"; String description "Blowing snow layer height from density"; String source "Atmosphere ATBD"; String origname "bsnow_h_dens"; String fullnamepath "/profile_3/high_rate/bsnow_h_dens"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_sig_h_mean_low { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "referenceInformation"; String long_name "Mean of Signal Heights - Low"; String description "Mean height of low-confidence signal photons"; String source "ATL03 ATBD, Section 5"; String origname "sig_h_mean_low"; String fullnamepath "/profile_3/high_rate/sig_h_mean_low"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_backg_theoret { Float32 _FillValue 3.402823466e+38; String units "photons/bin"; String contentType "modelResult"; String long_name "Background (Theoretical)"; String description "The theoretical background, in photons/bin."; String source "Atmosphere ATBD"; String origname "backg_theoret"; String fullnamepath "/profile_3/high_rate/backg_theoret"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_sig_h_sdev_med { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "referenceInformation"; String long_name "SDev of Signa Heights -Med"; String description "SDev of the heights of medium-confidence signal photons"; String source "ATL03 ATBD, Section 5"; String origname "sig_h_sdev_med"; String fullnamepath "/profile_3/high_rate/sig_h_sdev_med"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_surface_sig { String units "counts"; String contentType "modelResult"; String long_name "Surface signal count"; String description "Number of photons in the detected surface bin."; String source "Atmosphere ATBD section 3.3.5"; String origname "surface_sig"; String fullnamepath "/profile_3/high_rate/surface_sig"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_layer_ib { String contentType "modelResult"; String long_name "Layer integrated backscatter"; String description "Layer integrated backscatter"; String source "Atmosphere ATBD"; Float32 _FillValue 3.402823466e+38; String units "1"; String origname "layer_ib"; String fullnamepath "/profile_3/high_rate/layer_ib"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_high_rate_snow_ice { Int32 _FillValue 2147483647; String units "1"; String contentType "modelResult"; String long_name "Snow Ice Flag"; String description "NOAA snow-ice flag. 0=ice free water; 1=snow free land; 2=snow; 3=ice"; String source "Atmosphere ATBD"; String flag_meanings "ice_free_water snow_free_land snow ice"; Int32 flag_values 0, 1, 2, 3; String origname "snow_ice"; String fullnamepath "/profile_3/high_rate/snow_ice"; String coordinates "profile_3_high_rate_delta_time profile_3_high_rate_latitude profile_3_high_rate_longitude"; } profile_3_low_rate_met_tropt { Float32 _FillValue 3.402823466e+38; String units "K"; String contentType "referenceInformation"; String long_name "blended_tropopause_temperature"; String standard_name "temperature"; String description "Tropopause temperature (k)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_tropt"; String fullnamepath "/profile_3/low_rate/met_tropt"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_latitude profile_3_low_rate_longitude"; } profile_3_low_rate_mol_backs_folded { String units "m-1 sr-1"; String contentType "modelResult"; String long_name "Folded molecular transmission profile"; String description "Folded molecular transmission profile, 30 m resolution, , m-1 sr-1; 20 km to -1 km (equation 3.17)"; String source "Atmosphere ATBD"; String origname "mol_backs_folded"; String fullnamepath "/profile_3/low_rate/mol_backs_folded"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_latitude profile_3_low_rate_longitude"; } profile_3_low_rate_molec_bkscat_p { String units "Pa"; String contentType "modelResult"; String long_name "Pressure profile"; String description "Pressure profiles from 20 km to -1 km"; String source "Atmosphere ATBD"; String origname "molec_bkscat_p"; String fullnamepath "/profile_3/low_rate/molec_bkscat_p"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_latitude profile_3_low_rate_longitude"; } profile_3_low_rate_met_t2m { Float32 _FillValue 3.402823466e+38; String units "K"; String contentType "referenceInformation"; String long_name "temperature_at_2m"; String standard_name "temperature"; String description "Temperature at 2m above the displacement height (K)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_t2m"; String fullnamepath "/profile_3/low_rate/met_t2m"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_latitude profile_3_low_rate_longitude"; } profile_3_low_rate_met_u2m { Float32 _FillValue 3.402823466e+38; String units "m s-1"; String contentType "referenceInformation"; String long_name "Eastward_wind_at_2m"; String standard_name "eastward_wind"; String description "Eastward wind at 2m above the displacement height (m/s-1)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_u2m"; String fullnamepath "/profile_3/low_rate/met_u2m"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_latitude profile_3_low_rate_longitude"; } profile_3_low_rate_met_u10m { Float32 _FillValue 3.402823466e+38; String units "m s-1"; String contentType "referenceInformation"; String long_name "Eastward_wind_at_10m"; String standard_name "eastward_wind"; String description "Eastward wind at 10m above the displacement height (m/s-1)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_u10m"; String fullnamepath "/profile_3/low_rate/met_u10m"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_latitude profile_3_low_rate_longitude"; } profile_3_low_rate_molec_trans { String units "1"; String contentType "modelResult"; String long_name "Molecular transmission profile"; String description "Molecular transmission profile, 30 m resolution, 20 km to -1 km"; String source "Atmosphere ATBD"; String origname "molec_trans"; String fullnamepath "/profile_3/low_rate/molec_trans"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_latitude profile_3_low_rate_longitude"; } profile_3_low_rate_met_cldprs { Float32 _FillValue 3.402823466e+38; String units "Pa"; String contentType "referenceInformation"; String long_name "cloud_top_pressure"; String standard_name "pressure"; String description "Pressure of the highest cloud top at this location from GEOS5 data"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_cldprs"; String fullnamepath "/profile_3/low_rate/met_cldprs"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_latitude profile_3_low_rate_longitude"; } profile_3_low_rate_bsnow_con { Int16 _FillValue 127; String units "1"; String contentType "modelResult"; String long_name "Blowing snow confidence"; String description "Blowing snow confidence. -3=surface not detected; -2=no surface wind;-1=no scattering layer found; 0=no top layer found; 1=none-little; 2=weak; 3=moderate; 4=moderate-high; 5=high; 6=very high"; String source "Atmosphere ATBD"; String flag_meanings "surface_not_detected no_surface_wind no_scattering_layer_found no_top_layer_found none_little weak moderate moderate_high high very_high"; Int16 flag_values -3, -2, -1, 0, 1, 2, 3, 4, 5, 6; Int16 valid_min -3; Int16 valid_max 6; String origname "bsnow_con"; String fullnamepath "/profile_3/low_rate/bsnow_con"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_latitude profile_3_low_rate_longitude"; } profile_3_low_rate_bsnow_psc { String units "1"; String contentType "modelResult"; String long_name "Blowing snow PSC flag"; String description "Blowing snow PSC flag. Indicates the potential for polar stratospheric clouds to affect the blowing snow retrieval, where 0=none and 3=maximum. This flag is a function of month and hemisphere and is only applied poleward of 60 north and south."; String source "Atmosphere ATBD Section 4.5"; String flag_meanings "none slight moderate maximum_bsnow_PSC_affected"; Int16 flag_values 0, 1, 2, 3; Int16 valid_min 0; Int16 valid_max 3; String origname "bsnow_psc"; String fullnamepath "/profile_3/low_rate/bsnow_psc"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_latitude profile_3_low_rate_longitude"; } profile_3_low_rate_met_v50m { Float32 _FillValue 3.402823466e+38; String units "m s-1"; String contentType "referenceInformation"; String long_name "northward_wind_at_50m"; String standard_name "northward_wind"; String description "Northward wind at 50m above the displacement height (m/s-1)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_v50m"; String fullnamepath "/profile_3/low_rate/met_v50m"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_latitude profile_3_low_rate_longitude"; } profile_3_low_rate_bsnow_h { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "modelResult"; String long_name "Blowing snow top h"; String description "Blowing snow layer top height"; String source "Atmosphere ATBD"; String origname "bsnow_h"; String fullnamepath "/profile_3/low_rate/bsnow_h"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_latitude profile_3_low_rate_longitude"; } profile_3_low_rate_met_v10m { Float32 _FillValue 3.402823466e+38; String units "m s-1"; String contentType "referenceInformation"; String long_name "Northward_wind_at_10m"; String standard_name "northward_wind"; String description "Northward wind at 10m above the displacement height (m/s-1)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_v10m"; String fullnamepath "/profile_3/low_rate/met_v10m"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_latitude profile_3_low_rate_longitude"; } profile_3_low_rate_longitude { String units "degrees_east"; String contentType "referenceInformation"; String long_name "Longitude of the ATM histogram"; String standard_name "longitude"; String description "Longitude at the the top of the ATM histogram, WGS84, East=+, derived from the geolocation of the ATM range window."; String source "ATL03g ATBD"; Float64 valid_min -180.00000000000000; Float64 valid_max 180.00000000000000; String origname "longitude"; String fullnamepath "/profile_3/low_rate/longitude"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_latitude"; } profile_3_low_rate_met_ps { Float32 _FillValue 3.402823466e+38; String units "Pa"; String contentType "referenceInformation"; String long_name "Surface Pressure"; String standard_name "pressure"; String description "Surface Pressure (Pa)"; String source "GEOS5 FPIT 3D DFPITI3NVASM"; String origname "met_ps"; String fullnamepath "/profile_3/low_rate/met_ps"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_latitude profile_3_low_rate_longitude"; } profile_3_low_rate_latitude { String units "degrees_north"; String long_name "Latitude of the ATM histogram"; String standard_name "latitude"; String description "Latitude at the the top of the ATM histogram, WGS84, North=+, Derived from the geolocation of the ATM range window."; String source "ATL03g ATBD"; Float64 valid_min -90.000000000000000; Float64 valid_max 90.000000000000000; String contentType "referenceInformation"; String origname "latitude"; String fullnamepath "/profile_3/low_rate/latitude"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_longitude"; } profile_3_low_rate_surf_type { String units "1"; String contentType "referenceInformation"; String long_name "surface type"; 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 source "ATL03 ATBD, Section 4"; String flag_meanings "not_type is_type"; Int16 flag_values 0, 1; Int16 valid_min 0; Int16 valid_max 1; String origname "surf_type"; String fullnamepath "/profile_3/low_rate/surf_type"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_latitude profile_3_low_rate_longitude"; } profile_3_low_rate_met_qv10m { Float32 _FillValue 3.402823466e+38; String units "kg kg-1"; String contentType "referenceInformation"; String long_name "specific_humidity_at_10m"; String standard_name "specific_humidity"; String description "Specific humidity at 10 m above the displacement height (Pa)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_qv10m"; String fullnamepath "/profile_3/low_rate/met_qv10m"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_latitude profile_3_low_rate_longitude"; } profile_3_low_rate_bsnow_od { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Blowing snow OD"; String description "Blowing snow layer optical depth"; String source "Atmosphere ATBD"; String origname "bsnow_od"; String fullnamepath "/profile_3/low_rate/bsnow_od"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_latitude profile_3_low_rate_longitude"; } profile_3_low_rate_met_tqi { Float32 _FillValue 3.402823466e+38; String units "kg m2"; String contentType "referenceInformation"; String long_name "cloud_ice"; String description "Total column cloud ice (Kg/m2)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_tqi"; String fullnamepath "/profile_3/low_rate/met_tqi"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_latitude profile_3_low_rate_longitude"; } profile_3_low_rate_met_t10m { Float32 _FillValue 3.402823466e+38; String units "K"; String contentType "referenceInformation"; String long_name "temperature_at_10m"; String standard_name "temperature"; String description "Temperature at 10m above the displacement height (K)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_t10m"; String fullnamepath "/profile_3/low_rate/met_t10m"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_latitude profile_3_low_rate_longitude"; } profile_3_low_rate_cal_c { String units "Photons*m^3 *sr / J"; String contentType "modelResult"; String long_name "Calibration Constant"; String description "Calibration Constant (for each beam at 1 Hz)"; String source "Atmosphere ATBD"; String origname "cal_c"; String fullnamepath "/profile_3/low_rate/cal_c"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_latitude profile_3_low_rate_longitude"; } profile_3_low_rate_met_tql { Float32 _FillValue 3.402823466e+38; String units "kg m2"; String contentType "referenceInformation"; String long_name "cloud_liquid_water"; String description "Total column cloud liquid water (kg/m2)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_tql"; String fullnamepath "/profile_3/low_rate/met_tql"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_latitude profile_3_low_rate_longitude"; } profile_3_low_rate_met_v2m { Float32 _FillValue 3.402823466e+38; String units "m s-1"; String contentType "referenceInformation"; String long_name "Northward_wind_at_2m"; String standard_name "northward_wind"; String description "Northward wind at 2m above the displacement height (m/s-1)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_v2m"; String fullnamepath "/profile_3/low_rate/met_v2m"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_latitude profile_3_low_rate_longitude"; } profile_3_low_rate_met_ts { Float32 _FillValue 3.402823466e+38; String units "K"; String contentType "referenceInformation"; String long_name "surface_temperature"; String standard_name "temperature"; String description "Surface skin temperature (K)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_ts"; String fullnamepath "/profile_3/low_rate/met_ts"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_latitude profile_3_low_rate_longitude"; } profile_3_low_rate_met_qv2m { Float32 _FillValue 3.402823466e+38; String units "kg kg-1"; String contentType "referenceInformation"; String long_name "specific_humidity_at_2m"; String standard_name "specific_humidity"; String description "Specific humidity at 2 m above the displacement height (Pa)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_qv2m"; String fullnamepath "/profile_3/low_rate/met_qv2m"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_latitude profile_3_low_rate_longitude"; } profile_3_low_rate_molec_bkscat_t { String units "degreesC"; String contentType "modelResult"; String long_name "Temperature profile"; String description "Temperature profiles from 20 km to -1 km"; String source "Atmosphere ATBD"; String origname "molec_bkscat_t"; String fullnamepath "/profile_3/low_rate/molec_bkscat_t"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_latitude profile_3_low_rate_longitude"; } profile_3_low_rate_met_u50m { Float32 _FillValue 3.402823466e+38; String units "m s-1"; String contentType "referenceInformation"; String long_name "Eastward_wind_at_50m"; String standard_name "eastward_wind"; String description "Eastward wind at 50m above the displacement height (m/s-1)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_u50m"; String fullnamepath "/profile_3/low_rate/met_u50m"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_latitude profile_3_low_rate_longitude"; } profile_3_low_rate_met_slp { String units "Pa"; String contentType "modelResult"; String long_name "sea_level_pressure"; String standard_name "sea_level_pressure"; String description "sea-level pressure (Pa)"; String source "GEOS5 FPIT 3D DFPITI3NVASM"; String origname "met_slp"; String fullnamepath "/profile_3/low_rate/met_slp"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_latitude profile_3_low_rate_longitude"; } profile_3_low_rate_met_troppb { Float32 _FillValue 3.402823466e+38; String units "Pa"; String contentType "referenceInformation"; String long_name "blended_tropopause_pressure"; String standard_name "pressure"; String description "Blended tropopause pressure (pa)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_troppb"; String fullnamepath "/profile_3/low_rate/met_troppb"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_latitude profile_3_low_rate_longitude"; } profile_3_low_rate_bsnow_prob { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Blowing Snow Probability"; String description "The probability of blowing snow based on meteorological data."; String source "Atmosphere ATBD Section 4.5.1"; String origname "bsnow_prob"; String fullnamepath "/profile_3/low_rate/bsnow_prob"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_latitude profile_3_low_rate_longitude"; } profile_3_low_rate_mol_backscatter { String units "m-1 sr-1"; String contentType "modelResult"; String long_name "Molecular backscatter profile"; String description "Molecular backscatter profile, 30 m resolution, 20 km to -1 km"; String source "Atmosphere ATBD"; String origname "mol_backscatter"; String fullnamepath "/profile_3/low_rate/mol_backscatter"; String coordinates "profile_3_low_rate_delta_time profile_3_low_rate_latitude profile_3_low_rate_longitude"; } quality_assessment_qa_granule_fail_reason { String units "1"; 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 source "Operations"; String flag_meanings "no_failure PROCESS_ERROR INSUFFICIENT_OUTPUT failure_3 failure_4 OTHER_FAILURE"; Int32 flag_values 0, 1, 2, 3, 4, 5; Int32 valid_min 0; Int32 valid_max 5; String long_name "Granule Failure Reason"; String origname "qa_granule_fail_reason"; String fullnamepath "/quality_assessment/qa_granule_fail_reason"; } quality_assessment_qa_granule_pass_fail { String units "1"; String contentType "qualityInformation"; String description "Flag indicating granule quality. 0=granule passes automatic QA. 1=granule fails automatic QA."; String source "Operations"; String flag_meanings "PASS FAIL"; Int32 flag_values 0, 1; Int32 valid_min 0; Int32 valid_max 1; String long_name "Granule Pass Flag"; String origname "qa_granule_pass_fail"; String fullnamepath "/quality_assessment/qa_granule_pass_fail"; } quality_assessment_profile_1_cab_mol_avg { String units "1"; String contentType "qualityInformation"; String long_name "CAB molec Avg"; String description "CAB/molec average"; String source "Atmosphere ATBD"; String origname "cab_mol_avg"; String fullnamepath "/quality_assessment/profile_1/cab_mol_avg"; String coordinates "quality_assessment_profile_1_delta_time"; } quality_assessment_profile_1_asr_avg { String units "1"; String contentType "qualityInformation"; String long_name "ASR Average"; String description "Apparent surface reflectance average"; String source "Atmosphere ATBD"; String origname "asr_avg"; String fullnamepath "/quality_assessment/profile_1/asr_avg"; String coordinates "quality_assessment_profile_1_delta_time"; } quality_assessment_profile_1_cod_max { String units "1"; String contentType "qualityInformation"; String long_name "COD Maximum"; String description "Cloud Optical Depth maximum"; String source "Atmosphere ATBD"; String origname "cod_max"; String fullnamepath "/quality_assessment/profile_1/cod_max"; String coordinates "quality_assessment_profile_1_delta_time"; } quality_assessment_profile_1_cld_pct { String units "percent"; String contentType "qualityInformation"; String long_name "Cloud Percent"; String description "Percent time clouds were detected"; String source "Atmosphere ATBD"; String origname "cld_pct"; String fullnamepath "/quality_assessment/profile_1/cld_pct"; String coordinates "quality_assessment_profile_1_delta_time"; } quality_assessment_profile_1_asr_min { String units "1"; String contentType "qualityInformation"; String long_name "ASR Minimum"; String description "Apparent surface reflectance minimum"; String source "Atmosphere ATBD"; String origname "asr_min"; String fullnamepath "/quality_assessment/profile_1/asr_min"; String coordinates "quality_assessment_profile_1_delta_time"; } quality_assessment_profile_1_osr_avg { String units "1"; String contentType "qualityInformation"; String long_name "OSR Average"; String description "Ocean surface reflectance average"; String source "Atmosphere ATBD"; String origname "osr_avg"; String fullnamepath "/quality_assessment/profile_1/osr_avg"; String coordinates "quality_assessment_profile_1_delta_time"; } quality_assessment_profile_1_cld_asr_pct { String units "percent"; String contentType "qualityInformation"; String long_name "Cloud ASR Percent"; String description "Percent time clouds from ASR were detected"; String source "Atmosphere ATBD"; String origname "cld_asr_pct"; String fullnamepath "/quality_assessment/profile_1/cld_asr_pct"; String coordinates "quality_assessment_profile_1_delta_time"; } quality_assessment_profile_1_cld_min { String units "1"; String contentType "qualityInformation"; String long_name "Cloud layer min"; String description "Cloud layer min"; String source "ATL04"; String origname "cld_min"; String fullnamepath "/quality_assessment/profile_1/cld_min"; } quality_assessment_profile_1_osr_max { String units "1"; String contentType "qualityInformation"; String long_name "OSR Maximum"; String description "Ocean surface reflectance maximum"; String source "Atmosphere ATBD"; String origname "osr_max"; String fullnamepath "/quality_assessment/profile_1/osr_max"; String coordinates "quality_assessment_profile_1_delta_time"; } quality_assessment_profile_1_surf_pct { String units "percent"; String contentType "qualityInformation"; String long_name "Percent Surface"; String description "Percent time surface height was detected"; String source "ATL04"; String origname "surf_pct"; String fullnamepath "/quality_assessment/profile_1/surf_pct"; String coordinates "quality_assessment_profile_1_delta_time"; } quality_assessment_profile_1_delta_time { String units "seconds since 2018-01-01"; String contentType "referenceInformation"; String long_name "Elapsed GPS seconds"; String standard_name "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 source "telemetry"; String origname "delta_time"; String fullnamepath "/quality_assessment/profile_1/delta_time"; } quality_assessment_profile_1_asr_std { String units "1"; String contentType "qualityInformation"; String long_name "ASR Standard Deviation"; String description "Apparent surface reflectance stdev"; String source "Atmosphere ATBD"; String origname "asr_std"; String fullnamepath "/quality_assessment/profile_1/asr_std"; String coordinates "quality_assessment_profile_1_delta_time"; } quality_assessment_profile_1_cod_min { String units "1"; String contentType "qualityInformation"; String long_name "COD Minimum"; String description "Cloud Optical Depth minimum"; String source "Atmosphere ATBD"; String origname "cod_min"; String fullnamepath "/quality_assessment/profile_1/cod_min"; String coordinates "quality_assessment_profile_1_delta_time"; } quality_assessment_profile_1_cod_avg { String units "1"; String contentType "qualityInformation"; String long_name "COD Average"; String description "Cloud Optical Depth average"; String source "Atmosphere ATBD"; String origname "cod_avg"; String fullnamepath "/quality_assessment/profile_1/cod_avg"; String coordinates "quality_assessment_profile_1_delta_time"; } quality_assessment_profile_1_cld_max { String units "1"; String contentType "qualityInformation"; String long_name "Cloud layer max"; String description "Cloud layer max"; String source "ATL04"; String origname "cld_max"; String fullnamepath "/quality_assessment/profile_1/cld_max"; } quality_assessment_profile_1_osr_min { String units "1"; String contentType "qualityInformation"; String long_name "OSR Minimum"; String description "Ocean surface reflectance minimum"; String source "Atmosphere ATBD"; String origname "osr_min"; String fullnamepath "/quality_assessment/profile_1/osr_min"; String coordinates "quality_assessment_profile_1_delta_time"; } quality_assessment_profile_1_asr_max { String units "1"; String contentType "qualityInformation"; String long_name "ASR Maximum"; String description "Apparent surface reflectance maximum"; String source "Atmosphere ATBD"; String origname "asr_max"; String fullnamepath "/quality_assessment/profile_1/asr_max"; String coordinates "quality_assessment_profile_1_delta_time"; } quality_assessment_profile_1_cld_avg { String units "1"; String contentType "qualityInformation"; String long_name "Cloud layer average"; String description "Cloud layer average"; String source "Atmosphere ATBD"; String origname "cld_avg"; String fullnamepath "/quality_assessment/profile_1/cld_avg"; String coordinates "quality_assessment_profile_1_delta_time"; } quality_assessment_profile_2_cab_mol_avg { String units "1"; String contentType "qualityInformation"; String long_name "CAB molec Avg"; String description "CAB/molec average"; String source "Atmosphere ATBD"; String origname "cab_mol_avg"; String fullnamepath "/quality_assessment/profile_2/cab_mol_avg"; String coordinates "quality_assessment_profile_2_delta_time"; } quality_assessment_profile_2_asr_avg { String units "1"; String contentType "qualityInformation"; String long_name "ASR Average"; String description "Apparent surface reflectance average"; String source "Atmosphere ATBD"; String origname "asr_avg"; String fullnamepath "/quality_assessment/profile_2/asr_avg"; String coordinates "quality_assessment_profile_2_delta_time"; } quality_assessment_profile_2_cod_max { String units "1"; String contentType "qualityInformation"; String long_name "COD Maximum"; String description "Cloud Optical Depth maximum"; String source "Atmosphere ATBD"; String origname "cod_max"; String fullnamepath "/quality_assessment/profile_2/cod_max"; String coordinates "quality_assessment_profile_2_delta_time"; } quality_assessment_profile_2_cld_pct { String units "percent"; String contentType "qualityInformation"; String long_name "Cloud Percent"; String description "Percent time clouds were detected"; String source "Atmosphere ATBD"; String origname "cld_pct"; String fullnamepath "/quality_assessment/profile_2/cld_pct"; String coordinates "quality_assessment_profile_2_delta_time"; } quality_assessment_profile_2_asr_min { String units "1"; String contentType "qualityInformation"; String long_name "ASR Minimum"; String description "Apparent surface reflectance minimum"; String source "Atmosphere ATBD"; String origname "asr_min"; String fullnamepath "/quality_assessment/profile_2/asr_min"; String coordinates "quality_assessment_profile_2_delta_time"; } quality_assessment_profile_2_osr_avg { String units "1"; String contentType "qualityInformation"; String long_name "OSR Average"; String description "Ocean surface reflectance average"; String source "Atmosphere ATBD"; String origname "osr_avg"; String fullnamepath "/quality_assessment/profile_2/osr_avg"; String coordinates "quality_assessment_profile_2_delta_time"; } quality_assessment_profile_2_cld_asr_pct { String units "percent"; String contentType "qualityInformation"; String long_name "Cloud ASR Percent"; String description "Percent time clouds from ASR were detected"; String source "Atmosphere ATBD"; String origname "cld_asr_pct"; String fullnamepath "/quality_assessment/profile_2/cld_asr_pct"; String coordinates "quality_assessment_profile_2_delta_time"; } quality_assessment_profile_2_cld_min { String units "1"; String contentType "qualityInformation"; String long_name "Cloud layer min"; String description "Cloud layer min"; String source "ATL04"; String origname "cld_min"; String fullnamepath "/quality_assessment/profile_2/cld_min"; } quality_assessment_profile_2_osr_max { String units "1"; String contentType "qualityInformation"; String long_name "OSR Maximum"; String description "Ocean surface reflectance maximum"; String source "Atmosphere ATBD"; String origname "osr_max"; String fullnamepath "/quality_assessment/profile_2/osr_max"; String coordinates "quality_assessment_profile_2_delta_time"; } quality_assessment_profile_2_surf_pct { String units "percent"; String contentType "qualityInformation"; String long_name "Percent Surface"; String description "Percent time surface height was detected"; String source "ATL04"; String origname "surf_pct"; String fullnamepath "/quality_assessment/profile_2/surf_pct"; String coordinates "quality_assessment_profile_2_delta_time"; } quality_assessment_profile_2_delta_time { String units "seconds since 2018-01-01"; String contentType "referenceInformation"; String long_name "Elapsed GPS seconds"; String standard_name "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 source "telemetry"; String origname "delta_time"; String fullnamepath "/quality_assessment/profile_2/delta_time"; } quality_assessment_profile_2_asr_std { String units "1"; String contentType "qualityInformation"; String long_name "ASR Standard Deviation"; String description "Apparent surface reflectance stdev"; String source "Atmosphere ATBD"; String origname "asr_std"; String fullnamepath "/quality_assessment/profile_2/asr_std"; String coordinates "quality_assessment_profile_2_delta_time"; } quality_assessment_profile_2_cod_min { String units "1"; String contentType "qualityInformation"; String long_name "COD Minimum"; String description "Cloud Optical Depth minimum"; String source "Atmosphere ATBD"; String origname "cod_min"; String fullnamepath "/quality_assessment/profile_2/cod_min"; String coordinates "quality_assessment_profile_2_delta_time"; } quality_assessment_profile_2_cod_avg { String units "1"; String contentType "qualityInformation"; String long_name "COD Average"; String description "Cloud Optical Depth average"; String source "Atmosphere ATBD"; String origname "cod_avg"; String fullnamepath "/quality_assessment/profile_2/cod_avg"; String coordinates "quality_assessment_profile_2_delta_time"; } quality_assessment_profile_2_cld_max { String units "1"; String contentType "qualityInformation"; String long_name "Cloud layer max"; String description "Cloud layer max"; String source "ATL04"; String origname "cld_max"; String fullnamepath "/quality_assessment/profile_2/cld_max"; } quality_assessment_profile_2_osr_min { String units "1"; String contentType "qualityInformation"; String long_name "OSR Minimum"; String description "Ocean surface reflectance minimum"; String source "Atmosphere ATBD"; String origname "osr_min"; String fullnamepath "/quality_assessment/profile_2/osr_min"; String coordinates "quality_assessment_profile_2_delta_time"; } quality_assessment_profile_2_asr_max { String units "1"; String contentType "qualityInformation"; String long_name "ASR Maximum"; String description "Apparent surface reflectance maximum"; String source "Atmosphere ATBD"; String origname "asr_max"; String fullnamepath "/quality_assessment/profile_2/asr_max"; String coordinates "quality_assessment_profile_2_delta_time"; } quality_assessment_profile_2_cld_avg { String units "1"; String contentType "qualityInformation"; String long_name "Cloud layer average"; String description "Cloud layer average"; String source "Atmosphere ATBD"; String origname "cld_avg"; String fullnamepath "/quality_assessment/profile_2/cld_avg"; String coordinates "quality_assessment_profile_2_delta_time"; } quality_assessment_profile_3_cab_mol_avg { String units "1"; String contentType "qualityInformation"; String long_name "CAB molec Avg"; String description "CAB/molec average"; String source "Atmosphere ATBD"; String origname "cab_mol_avg"; String fullnamepath "/quality_assessment/profile_3/cab_mol_avg"; String coordinates "quality_assessment_profile_3_delta_time"; } quality_assessment_profile_3_asr_avg { String units "1"; String contentType "qualityInformation"; String long_name "ASR Average"; String description "Apparent surface reflectance average"; String source "Atmosphere ATBD"; String origname "asr_avg"; String fullnamepath "/quality_assessment/profile_3/asr_avg"; String coordinates "quality_assessment_profile_3_delta_time"; } quality_assessment_profile_3_cod_max { String units "1"; String contentType "qualityInformation"; String long_name "COD Maximum"; String description "Cloud Optical Depth maximum"; String source "Atmosphere ATBD"; String origname "cod_max"; String fullnamepath "/quality_assessment/profile_3/cod_max"; String coordinates "quality_assessment_profile_3_delta_time"; } quality_assessment_profile_3_cld_pct { String units "percent"; String contentType "qualityInformation"; String long_name "Cloud Percent"; String description "Percent time clouds were detected"; String source "Atmosphere ATBD"; String origname "cld_pct"; String fullnamepath "/quality_assessment/profile_3/cld_pct"; String coordinates "quality_assessment_profile_3_delta_time"; } quality_assessment_profile_3_asr_min { String units "1"; String contentType "qualityInformation"; String long_name "ASR Minimum"; String description "Apparent surface reflectance minimum"; String source "Atmosphere ATBD"; String origname "asr_min"; String fullnamepath "/quality_assessment/profile_3/asr_min"; String coordinates "quality_assessment_profile_3_delta_time"; } quality_assessment_profile_3_osr_avg { String units "1"; String contentType "qualityInformation"; String long_name "OSR Average"; String description "Ocean surface reflectance average"; String source "Atmosphere ATBD"; String origname "osr_avg"; String fullnamepath "/quality_assessment/profile_3/osr_avg"; String coordinates "quality_assessment_profile_3_delta_time"; } quality_assessment_profile_3_cld_asr_pct { String units "percent"; String contentType "qualityInformation"; String long_name "Cloud ASR Percent"; String description "Percent time clouds from ASR were detected"; String source "Atmosphere ATBD"; String origname "cld_asr_pct"; String fullnamepath "/quality_assessment/profile_3/cld_asr_pct"; String coordinates "quality_assessment_profile_3_delta_time"; } quality_assessment_profile_3_cld_min { String units "1"; String contentType "qualityInformation"; String long_name "Cloud layer min"; String description "Cloud layer min"; String source "ATL04"; String origname "cld_min"; String fullnamepath "/quality_assessment/profile_3/cld_min"; } quality_assessment_profile_3_osr_max { String units "1"; String contentType "qualityInformation"; String long_name "OSR Maximum"; String description "Ocean surface reflectance maximum"; String source "Atmosphere ATBD"; String origname "osr_max"; String fullnamepath "/quality_assessment/profile_3/osr_max"; String coordinates "quality_assessment_profile_3_delta_time"; } quality_assessment_profile_3_surf_pct { String units "percent"; String contentType "qualityInformation"; String long_name "Percent Surface"; String description "Percent time surface height was detected"; String source "ATL04"; String origname "surf_pct"; String fullnamepath "/quality_assessment/profile_3/surf_pct"; String coordinates "quality_assessment_profile_3_delta_time"; } quality_assessment_profile_3_delta_time { String units "seconds since 2018-01-01"; String contentType "referenceInformation"; String long_name "Elapsed GPS seconds"; String standard_name "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 source "telemetry"; String origname "delta_time"; String fullnamepath "/quality_assessment/profile_3/delta_time"; } quality_assessment_profile_3_asr_std { String units "1"; String contentType "qualityInformation"; String long_name "ASR Standard Deviation"; String description "Apparent surface reflectance stdev"; String source "Atmosphere ATBD"; String origname "asr_std"; String fullnamepath "/quality_assessment/profile_3/asr_std"; String coordinates "quality_assessment_profile_3_delta_time"; } quality_assessment_profile_3_cod_min { String units "1"; String contentType "qualityInformation"; String long_name "COD Minimum"; String description "Cloud Optical Depth minimum"; String source "Atmosphere ATBD"; String origname "cod_min"; String fullnamepath "/quality_assessment/profile_3/cod_min"; String coordinates "quality_assessment_profile_3_delta_time"; } quality_assessment_profile_3_cod_avg { String units "1"; String contentType "qualityInformation"; String long_name "COD Average"; String description "Cloud Optical Depth average"; String source "Atmosphere ATBD"; String origname "cod_avg"; String fullnamepath "/quality_assessment/profile_3/cod_avg"; String coordinates "quality_assessment_profile_3_delta_time"; } quality_assessment_profile_3_cld_max { String units "1"; String contentType "qualityInformation"; String long_name "Cloud layer max"; String description "Cloud layer max"; String source "ATL04"; String origname "cld_max"; String fullnamepath "/quality_assessment/profile_3/cld_max"; } quality_assessment_profile_3_osr_min { String units "1"; String contentType "qualityInformation"; String long_name "OSR Minimum"; String description "Ocean surface reflectance minimum"; String source "Atmosphere ATBD"; String origname "osr_min"; String fullnamepath "/quality_assessment/profile_3/osr_min"; String coordinates "quality_assessment_profile_3_delta_time"; } quality_assessment_profile_3_asr_max { String units "1"; String contentType "qualityInformation"; String long_name "ASR Maximum"; String description "Apparent surface reflectance maximum"; String source "Atmosphere ATBD"; String origname "asr_max"; String fullnamepath "/quality_assessment/profile_3/asr_max"; String coordinates "quality_assessment_profile_3_delta_time"; } quality_assessment_profile_3_cld_avg { String units "1"; String contentType "qualityInformation"; String long_name "Cloud layer average"; String description "Cloud layer average"; String source "Atmosphere ATBD"; String origname "cld_avg"; String fullnamepath "/quality_assessment/profile_3/cld_avg"; String coordinates "quality_assessment_profile_3_delta_time"; } profile_2_bckgrd_atlas_bckgrd_counts_reduced { String units "counts"; String contentType "modelResult"; String long_name "ATLAS 50-shot background count - reduced"; 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 source "ATL03 ATBD Section 7.3"; 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_counts { String units "counts"; String contentType "modelResult"; String long_name "ATLAS 50-shot background count"; String description "Onboard 50 shot background (200 Hz) sum of photon events within the altimetric range window."; String source "ATL03 ATBD Section 7.3"; 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_hist_top { String units "meters"; String contentType "modelResult"; String long_name "Top of the altimetric range window"; 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 source "ATL03 ATBD Section 7.3"; 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 units "meters"; String contentType "modelResult"; String long_name "Altimetric range window width"; 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 source "ATL03 ATBD Section 7.3"; 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 units "meters"; String contentType "modelResult"; String long_name "Altimetric range window height - reduced"; 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 source "ATL03 ATBD Section 7.3"; 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_rate { String units "counts / second"; String contentType "modelResult"; String long_name "Background count rate based on the ATLAS 50-shot sum"; 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 source "ATL03 ATBD Section 7.3"; 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 units "counts"; String contentType "referenceInformation"; String long_name "PCE Major frame counter"; 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 source "ATL02"; String origname "pce_mframe_cnt"; String fullnamepath "/profile_2/bckgrd_atlas/pce_mframe_cnt"; String coordinates "profile_2_bckgrd_atlas_delta_time"; } profile_2_high_rate_sig_count_med { String units "counts"; String long_name "Count of Signal Heights - Medium"; String description "Count of medium-confidence signal photons"; String source "ATL03 ATBD, Section 5"; String contentType "referenceInformation"; String origname "sig_count_med"; String fullnamepath "/profile_2/high_rate/sig_count_med"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_surface_h_dens { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "modelResult"; String long_name "Surface h from density"; String description "Surface height from density"; String source "Atmosphere ATBD"; String origname "surface_h_dens"; String fullnamepath "/profile_2/high_rate/surface_h_dens"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_dem_flag { Int16 _FillValue 127; String units "1"; String contentType "referenceInformation"; String long_name "dem source flag"; String description "Indicates source of the DEM height. Values: 0=None, 1=GIMP, 2=GMTED, 3=MSS, 4=Antarctic."; String source "Atmosphere ATBD"; String flag_meanings "none gimp gmted mss antarctic"; Int16 flag_values 0, 1, 2, 3, 4; Int16 valid_min 0; Int16 valid_max 4; String origname "dem_flag"; String fullnamepath "/profile_2/high_rate/dem_flag"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_msw_flag { Int16 _FillValue 127; String units "1"; String contentType "modelResult"; String long_name "Multiple Scattering Warning Flag"; String description "Multiple Scattering warning flag. The multiple scattering warning flag (ATL09 parameter msw_flag) has values from -1 to 5 where zero means no multiple scattering and 5 the greatest. If no layers were detected, then msw_flag = 0. If blowing snow is detected and its estimated optical depth is greater than or equal to 0.5, then msw_flag = 5. If the blowing snow optical depth is less than 0.5, then msw_flag = 4. If no blowing snow is detected but there are cloud or aerosol layers detected, the msw_flag assumes values of 1 to 3 based on the height of the bottom of the lowest layer: < 1 km, msw_flag = 3; 1-3 km, msw_flag = 2; > 3km, msw_flag = 1. A value of -1 indicates that the signal to noise of the data was too low to reliably ascertain the presence of cloud or blowing snow. We expect values of -1 to occur only during daylight."; String source "Atmosphere ATBD"; String flag_meanings "cannot_determine no_layers layer_gt_3km layer_between_1_and_3_km layer_lt_1km blow_snow_od_lt_0.5 blow_snow_od_gt_0.5"; Int16 flag_values -1, 0, 1, 2, 3, 4, 5; Int16 valid_min -1; Int16 valid_max 5; String origname "msw_flag"; String fullnamepath "/profile_2/high_rate/msw_flag"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_cloud_flag_atm { String units "1"; String contentType "modelResult"; String long_name "Cloud Flag Atm"; String description "Number of layers found from the backscatter profile using the DDA layer finder."; String source "Atmosphere ATBD"; Int16 valid_min 0; Int16 valid_max 10; String origname "cloud_flag_atm"; String fullnamepath "/profile_2/high_rate/cloud_flag_atm"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_ocean_surf_reflec { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Ocean Surface Reflectance"; String description "Ocean Surface Reflectance from Eqn 4.10 based on the Cox-Munk model."; String source "Atmosphere ATBD"; String origname "ocean_surf_reflec"; String fullnamepath "/profile_2/high_rate/ocean_surf_reflec"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_sig_count_low { String units "counts"; String contentType "referenceInformation"; String long_name "Count of Signal Heights - Low"; String description "Count of low-confidence signal photons"; String source "ATL03 ATBD, Section 5"; String origname "sig_count_low"; String fullnamepath "/profile_2/high_rate/sig_count_low"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_layer_attr { String units "1"; String contentType "modelResult"; String long_name "Layer attribute flag"; String description "Layer attribute flag for each of the possible 10 layers. Indicates (0) no_layer (1) cloud, (2) aerosol or (3) unknown."; String source "Atmosphere ATBD"; String flag_meanings "no_layer cloud aerosol unknown"; Int16 flag_values 0, 1, 2, 3; Int16 valid_min 0; Int16 valid_max 3; String origname "layer_attr"; String fullnamepath "/profile_2/high_rate/layer_attr"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_sig_h_sdev_hi { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "referenceInformation"; String long_name "SDev of Signal Heights -High"; String description "SDev of the heights of high-confidence signal photons"; String source "ATL03 ATBD, Section 5"; String origname "sig_h_sdev_hi"; String fullnamepath "/profile_2/high_rate/sig_h_sdev_hi"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_bsnow_con { Int16 _FillValue 127; String units "1"; String contentType "modelResult"; String long_name "Blowing snow confidence"; String description "Blowing snow confidence. -3=surface not detected; -2=no surface wind;-1=no scattering layer found; 0=no top layer found; 1=none-little; 2=weak; 3=moderate; 4=moderate-high; 5=high; 6=very high"; String source "Atmosphere ATBD"; String flag_meanings "surface_not_detected no_surface_wind no_scattering_layer_found no_top_layer_found none_little weak moderate moderate_high high very_high"; Int16 flag_values -3, -2, -1, 0, 1, 2, 3, 4, 5, 6; Int16 valid_min -3; Int16 valid_max 6; String origname "bsnow_con"; String fullnamepath "/profile_2/high_rate/bsnow_con"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_layer_flag { String units "1"; String contentType "qualityInformation"; String long_name "Consolidated cloud flag"; String description "This flag is a combination of multiple flags (cloud_flag_atm, cloud_flag_asr, and bsnow_con) and takes daytime/nighttime into consideration. A value of 1 means clouds or blowing snow are likely present. A value of 0 indicates the likely absence of clouds or blowing snow."; String source "Atmosphere ATBD"; String flag_meanings "likely_clear likely_cloudy"; Int16 flag_values 0, 1; Int16 valid_min 0; Int16 valid_max 1; String origname "layer_flag"; String fullnamepath "/profile_2/high_rate/layer_flag"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_dtime_fac1 { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "dead_time_factor1"; String description "Dead time correction factor for surface signal computed from radiometric lookup table."; String source "Atmosphere ATBD"; String origname "dtime_fac1"; String fullnamepath "/profile_2/high_rate/dtime_fac1"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_bsnow_psc { String units "1"; String contentType "modelResult"; String long_name "Blowing snow PSC flag"; String description "Blowing snow PSC flag. Indicates the potential for polar stratospheric clouds to affect the blowing snow retrieval, where 0=none and 3=maximum. This flag is a function of month and hemisphere and is only applied poleward of 60 north and south."; String source "Atmosphere ATBD Section 4.5"; String flag_meanings "none slight moderate maximum_bsnow_PSC_affected"; Int16 flag_values 0, 1, 2, 3; Int16 valid_min 0; Int16 valid_max 3; String origname "bsnow_psc"; String fullnamepath "/profile_2/high_rate/bsnow_psc"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_surf_refl_true { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Estimated Surface Reflectance"; String description "The value of the clear-sky surface reflectivity to use in the compuation of total column optical depth and cloud detection from the measures apparent surface reflectance (ASR)."; String source "Atmosphere ATBD"; String origname "surf_refl_true"; String fullnamepath "/profile_2/high_rate/surf_refl_true"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_bsnow_h { String contentType "modelResult"; String long_name "Blowing snow top h"; String description "Blowing snow layer top height"; String source "Atmosphere ATBD"; Float32 _FillValue 3.402823466e+38; String units "meters"; String origname "bsnow_h"; String fullnamepath "/profile_2/high_rate/bsnow_h"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_sig_h_mean_hi { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "referenceInformation"; String long_name "Mean of SignalHeights - High"; String description "Mean height of high-confidence signal photons"; String source "ATL03 ATBD, Section 5"; String origname "sig_h_mean_hi"; String fullnamepath "/profile_2/high_rate/sig_h_mean_hi"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_beam_azimuth { Float32 _FillValue 3.402823466e+38; String units "degrees_east"; String contentType "referenceInformation"; String long_name "beam azimuth"; String description "Beam azimuth"; String source "ATL03 ATBD"; String origname "beam_azimuth"; String fullnamepath "/profile_2/high_rate/beam_azimuth"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_range_to_top { String units "meters"; String contentType "referenceInformation"; String long_name "Range"; String description "Range from the spacecraft to the top of the atmosphere range window."; String source "Atmosphere ATBD"; String origname "range_to_top"; String fullnamepath "/profile_2/high_rate/range_to_top"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_solar_azimuth { String units "degrees_east"; String contentType "referenceInformation"; String long_name "solar azimuth"; String description "The direction, eastwards from north, of the sun vector as seen by an observer at the laser ground spot."; String source "ATL03g ATBD"; String origname "solar_azimuth"; String fullnamepath "/profile_2/high_rate/solar_azimuth"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_longitude { String units "degrees_east"; String contentType "referenceInformation"; String long_name "Longitude of the ATM histogram"; String standard_name "longitude"; String description "Longitude at the the top of the ATM histogram, WGS84, East=+, derived from the geolocation of the ATM range window."; String source "ATL03g ATBD"; Float64 valid_min -180.00000000000000; Float64 valid_max 180.00000000000000; String origname "longitude"; String fullnamepath "/profile_2/high_rate/longitude"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude"; } profile_2_high_rate_latitude { String units "degrees_north"; String contentType "referenceInformation"; String long_name "Latitude of the ATM histogram"; String standard_name "latitude"; String description "Latitude at the the top of the ATM histogram, WGS84, North=+, Derived from the geolocation of the ATM range window."; String source "ATL03g ATBD"; Float64 valid_min -90.000000000000000; Float64 valid_max 90.000000000000000; String origname "latitude"; String fullnamepath "/profile_2/high_rate/latitude"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_longitude"; } profile_2_high_rate_surf_type { String units "1"; String contentType "referenceInformation"; String long_name "surface type"; 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 source "ATL03 ATBD, Section 4"; String flag_meanings "not_type is_type"; Int16 flag_values 0, 1; Int16 valid_min 0; Int16 valid_max 1; String origname "surf_type"; String fullnamepath "/profile_2/high_rate/surf_type"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_density_pass1 { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Density profile - pass1"; String description "Density profiles from pass 1."; String source "Atmosphere ATBD Part II"; String origname "density_pass1"; String fullnamepath "/profile_2/high_rate/density_pass1"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_column_od_asr_qf { Int16 _FillValue 127; String units "1"; String contentType "modelResult"; String long_name "Optical depth ASR quality"; String description "Total column optical depth from ASR quality flag. The total atmosphere column particulate optical depth can be computed from the apparent surface reflectance if the actual surface reflectance is well known. The flag indicates the surface type over which the flag is computed in the order from unable to compute (0 - no_surface_signal) to best quality (4=water)."; String source "Atmosphere ATBD"; String flag_meanings "no_signal land sea_ice land_ice water"; Int16 flag_values 0, 1, 2, 3, 4; String origname "column_od_asr_qf"; String fullnamepath "/profile_2/high_rate/column_od_asr_qf"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_bsnow_od { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Blowing snow OD"; String description "Blowing snow layer optical depth"; String source "Atmosphere ATBD"; String origname "bsnow_od"; String fullnamepath "/profile_2/high_rate/bsnow_od"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_surf_type_igbp { String units "1"; String contentType "referenceInformation"; String long_name "IGBP Surface Type"; String description "IGBP Surface Type"; String source "Atmosphere ATBD, IGBP Surface Type"; String origname "surf_type_igbp"; String fullnamepath "/profile_2/high_rate/surf_type_igbp"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_backg_c { String units "counts"; String contentType "modelResult"; String long_name "Background"; String description "Background, in photons/bin, used in the NRB Computation."; String source "Atmosphere ATBD"; String origname "backg_c"; String fullnamepath "/profile_2/high_rate/backg_c"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_sig_h_mean_med { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "referenceInformation"; String long_name "Mean of Signa Heightsl - Med"; String description "Mean height of medium-confidence signal photons"; String source "ATL03 ATBD, Section 5"; String origname "sig_h_mean_med"; String fullnamepath "/profile_2/high_rate/sig_h_mean_med"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_dem_h { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "referenceInformation"; String long_name "DEM Height"; String description "Best available DEM (in priority of GIMP/ANTARCTIC/GMTED/MSS) value at the geolocation point."; String source "Atmosphere ATBD"; String origname "dem_h"; String fullnamepath "/profile_2/high_rate/dem_h"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_cloud_flag_asr { Int16 _FillValue 127; String units "1"; String contentType "modelResult"; String long_name "Cloud Flag ASR"; String description "Cloud flag (probability) from apparent surface reflectance. 0=clear with high confidence; 1=clear with medium confidence; 2=clear with low confidence; 3=cloudy with low confidence; 4=cloudy with medium confidence; 5=cloudy with high confidence; 6=unknown"; String source "Atmosphere ATBD"; String flag_meanings "clear_with_high_confidence clear_with_medium_confidence clear_with_low_confidence cloudy_with_low_confidence cloudy_with_medium_confidence cloudy_with_high_confidence unknown"; Int16 flag_values 0, 1, 2, 3, 4, 5, 6; Int16 valid_min 0; Int16 valid_max 6; String origname "cloud_flag_asr"; String fullnamepath "/profile_2/high_rate/cloud_flag_asr"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_tx_pulse_energy { Float32 _FillValue 3.402823466e+38; String units "Joules"; String contentType "referenceInformation"; String long_name "Transmit Pulse Energy"; String description "Transmit energy, from the laser internal energy monitor, split into per-beam measurements."; String source "ATL02 ATBD, Section 7.2"; String origname "tx_pulse_energy"; String fullnamepath "/profile_2/high_rate/tx_pulse_energy"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_layer_bot { Float32 _FillValue 3.402823466e+38; String units "meter"; String contentType "modelResult"; String long_name "Height layer bottoms"; String description "Height of bottom of detected layers"; String source "Atmosphere ATBD"; String origname "layer_bot"; String fullnamepath "/profile_2/high_rate/layer_bot"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_cab_prof { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Calibrated Attenuated Backscatter"; String description "Calibrated Attenuated Backscatter from 20 to -1 km with vertical resolution of 30m (eqn 4.1)"; String source "Atmosphere ATBD"; String origname "cab_prof"; String fullnamepath "/profile_2/high_rate/cab_prof"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_density_pass2 { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Density profile - pass2"; String description "Density profiles from pass 2."; String source "Atmosphere ATBD Part II"; String origname "density_pass2"; String fullnamepath "/profile_2/high_rate/density_pass2"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_surface_height { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "modelResult"; String long_name "Surface height"; String description "Height of the detected surface bin."; String source "Atmosphere ATBD section 3.3.5"; String origname "surface_height"; String fullnamepath "/profile_2/high_rate/surface_height"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_bsnow_dens { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Blowing snow density"; String description "Blowing snow layer density"; String source "Atmosphere ATBD"; String origname "bsnow_dens"; String fullnamepath "/profile_2/high_rate/bsnow_dens"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_layer_top { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "modelResult"; String long_name "Height layer tops"; String description "Height of top of detected layers"; String source "Atmosphere ATBD"; String origname "layer_top"; String fullnamepath "/profile_2/high_rate/layer_top"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_column_od_asr { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Optical depth from ASR"; String description "Optical depth of atmosphere column based on apparent surface reflectance and the assumed actual surface reflectance."; String source "Atmosphere ATBD"; String origname "column_od_asr"; String fullnamepath "/profile_2/high_rate/column_od_asr"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_layer_dens { String units "1"; String contentType "modelResult"; String long_name "Layer Density"; String description "Layer Density"; String source "Atmosphere ATBD"; String origname "layer_dens"; String fullnamepath "/profile_2/high_rate/layer_dens"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_prof_dist_y { String units "meters"; String contentType "referenceInformation"; String long_name "Across Track Distance from RGT"; String description "Across-Track distance from the reference ground track."; String source "ATL03g ATBD, Section 3.4"; String origname "prof_dist_y"; String fullnamepath "/profile_2/high_rate/prof_dist_y"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_beam_elevation { Float32 _FillValue 3.402823466e+38; String units "degrees"; String contentType "referenceInformation"; String long_name "beam elevation"; String description "Beam elevation"; String source "ATL03 ATBD"; String origname "beam_elevation"; String fullnamepath "/profile_2/high_rate/beam_elevation"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_segment_id { String units "1"; String contentType "referenceInformation"; String long_name "along-track segment ID number."; 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 source "ATL03 ATBD, Section 3.1"; String origname "segment_id"; String fullnamepath "/profile_2/high_rate/segment_id"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_surface_bin { Int32 _FillValue 2147483647; String units "1"; String contentType "modelResult"; String long_name "Surface bin"; String description "Vertially aligned, NRB bin number of the detected surface return."; String source "Atmosphere ATBD section 3.3.5"; String origname "surface_bin"; String fullnamepath "/profile_2/high_rate/surface_bin"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_solar_elevation { String units "degrees"; String contentType "referenceInformation"; String long_name "solar elevation"; 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 source "ATL03g ATBD"; String origname "solar_elevation"; String fullnamepath "/profile_2/high_rate/solar_elevation"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_sig_count_hi { String units "counts"; String contentType "referenceInformation"; String long_name "Count of Signa Heightsl - High"; String description "Count of high-confidence signal photons"; String source "ATL03 ATBD, Section 5"; String origname "sig_count_hi"; String fullnamepath "/profile_2/high_rate/sig_count_hi"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_dtime_fac2 { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "dead_time_factor2"; String description "Dead time correction factor for surface signal computed from ATBD equation 2.1."; String source "Atmosphere ATBD"; String origname "dtime_fac2"; String fullnamepath "/profile_2/high_rate/dtime_fac2"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_prof_dist_x { String units "meters"; String contentType "referenceInformation"; String long_name "Along Track Distance"; String description "Along-track distance from the equator crossing."; String source "ATL03g ATBD, Section 3.4"; String origname "prof_dist_x"; String fullnamepath "/profile_2/high_rate/prof_dist_x"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_aclr_true { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Clear sky ASR"; String description "Clear sky initial surface reflectance based on GOME climatology or Cox-Munk model: see Fig 3.6.5 of the Atmosphere ATBD."; String source "Atmosphere ATBD"; String origname "aclr_true"; String fullnamepath "/profile_2/high_rate/aclr_true"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_apparent_surf_reflec { String units "1"; String contentType "modelResult"; String long_name "Apparent Surface Reflectance"; String description "Apparent Surface Reflectance (ASR): Eqn 4.7"; String source "Atmosphere ATBD"; String origname "apparent_surf_reflec"; String fullnamepath "/profile_2/high_rate/apparent_surf_reflec"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_pce_mframe_cnt { String units "counts"; String contentType "referenceInformation"; String long_name "PCE Major frame counter"; 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 source "ATL02"; String origname "pce_mframe_cnt"; String fullnamepath "/profile_2/high_rate/pce_mframe_cnt"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_cloud_fold_flag { Int16 _FillValue 127; String units "1"; String contentType "modelResult"; String long_name "Cloud Folding Flag"; 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 source "Atmosphere ATBD"; String flag_meanings "no_folding goes5_indicates profile_indicates both_indicate"; Int16 flag_values 0, 1, 2, 3; Int16 valid_min 0; Int16 valid_max 3; String origname "cloud_fold_flag"; String fullnamepath "/profile_2/high_rate/cloud_fold_flag"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_sig_h_sdev_low { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "referenceInformation"; String long_name "SDev of Signal Heights -Low"; String description "SDev of the heights of low-confidence signal photons"; String source "ATL03 ATBD, Section 5"; String origname "sig_h_sdev_low"; String fullnamepath "/profile_2/high_rate/sig_h_sdev_low"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_layer_con { String units "1"; String contentType "modelResult"; String long_name "Layer confidence flag"; String description "Layer confidence flag for each layer"; String source "Atmosphere ATBD"; Int32 valid_min 0; Int32 valid_max 10000; String origname "layer_con"; String fullnamepath "/profile_2/high_rate/layer_con"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_bsnow_h_dens { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "modelResult"; String long_name "Blowing snow h from density"; String description "Blowing snow layer height from density"; String source "Atmosphere ATBD"; String origname "bsnow_h_dens"; String fullnamepath "/profile_2/high_rate/bsnow_h_dens"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_sig_h_mean_low { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "referenceInformation"; String long_name "Mean of Signal Heights - Low"; String description "Mean height of low-confidence signal photons"; String source "ATL03 ATBD, Section 5"; String origname "sig_h_mean_low"; String fullnamepath "/profile_2/high_rate/sig_h_mean_low"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_backg_theoret { Float32 _FillValue 3.402823466e+38; String units "photons/bin"; String contentType "modelResult"; String long_name "Background (Theoretical)"; String description "The theoretical background, in photons/bin."; String source "Atmosphere ATBD"; String origname "backg_theoret"; String fullnamepath "/profile_2/high_rate/backg_theoret"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_sig_h_sdev_med { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "referenceInformation"; String long_name "SDev of Signa Heights -Med"; String description "SDev of the heights of medium-confidence signal photons"; String source "ATL03 ATBD, Section 5"; String origname "sig_h_sdev_med"; String fullnamepath "/profile_2/high_rate/sig_h_sdev_med"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_surface_sig { String units "counts"; String contentType "modelResult"; String long_name "Surface signal count"; String description "Number of photons in the detected surface bin."; String source "Atmosphere ATBD section 3.3.5"; String origname "surface_sig"; String fullnamepath "/profile_2/high_rate/surface_sig"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_layer_ib { String contentType "modelResult"; String long_name "Layer integrated backscatter"; String description "Layer integrated backscatter"; String source "Atmosphere ATBD"; Float32 _FillValue 3.402823466e+38; String units "1"; String origname "layer_ib"; String fullnamepath "/profile_2/high_rate/layer_ib"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_high_rate_snow_ice { Int32 _FillValue 2147483647; String units "1"; String contentType "modelResult"; String long_name "Snow Ice Flag"; String description "NOAA snow-ice flag. 0=ice free water; 1=snow free land; 2=snow; 3=ice"; String source "Atmosphere ATBD"; String flag_meanings "ice_free_water snow_free_land snow ice"; Int32 flag_values 0, 1, 2, 3; String origname "snow_ice"; String fullnamepath "/profile_2/high_rate/snow_ice"; String coordinates "profile_2_high_rate_delta_time profile_2_high_rate_latitude profile_2_high_rate_longitude"; } profile_2_low_rate_met_tropt { Float32 _FillValue 3.402823466e+38; String units "K"; String contentType "referenceInformation"; String long_name "blended_tropopause_temperature"; String standard_name "temperature"; String description "Tropopause temperature (k)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_tropt"; String fullnamepath "/profile_2/low_rate/met_tropt"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_latitude profile_2_low_rate_longitude"; } profile_2_low_rate_mol_backs_folded { String units "m-1 sr-1"; String contentType "modelResult"; String long_name "Folded molecular transmission profile"; String description "Folded molecular transmission profile, 30 m resolution, , m-1 sr-1; 20 km to -1 km (equation 3.17)"; String source "Atmosphere ATBD"; String origname "mol_backs_folded"; String fullnamepath "/profile_2/low_rate/mol_backs_folded"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_latitude profile_2_low_rate_longitude"; } profile_2_low_rate_molec_bkscat_p { String units "Pa"; String contentType "modelResult"; String long_name "Pressure profile"; String description "Pressure profiles from 20 km to -1 km"; String source "Atmosphere ATBD"; String origname "molec_bkscat_p"; String fullnamepath "/profile_2/low_rate/molec_bkscat_p"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_latitude profile_2_low_rate_longitude"; } profile_2_low_rate_met_t2m { Float32 _FillValue 3.402823466e+38; String units "K"; String contentType "referenceInformation"; String long_name "temperature_at_2m"; String standard_name "temperature"; String description "Temperature at 2m above the displacement height (K)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_t2m"; String fullnamepath "/profile_2/low_rate/met_t2m"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_latitude profile_2_low_rate_longitude"; } profile_2_low_rate_met_u2m { Float32 _FillValue 3.402823466e+38; String units "m s-1"; String contentType "referenceInformation"; String long_name "Eastward_wind_at_2m"; String standard_name "eastward_wind"; String description "Eastward wind at 2m above the displacement height (m/s-1)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_u2m"; String fullnamepath "/profile_2/low_rate/met_u2m"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_latitude profile_2_low_rate_longitude"; } profile_2_low_rate_met_u10m { Float32 _FillValue 3.402823466e+38; String units "m s-1"; String contentType "referenceInformation"; String long_name "Eastward_wind_at_10m"; String standard_name "eastward_wind"; String description "Eastward wind at 10m above the displacement height (m/s-1)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_u10m"; String fullnamepath "/profile_2/low_rate/met_u10m"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_latitude profile_2_low_rate_longitude"; } profile_2_low_rate_molec_trans { String units "1"; String contentType "modelResult"; String long_name "Molecular transmission profile"; String description "Molecular transmission profile, 30 m resolution, 20 km to -1 km"; String source "Atmosphere ATBD"; String origname "molec_trans"; String fullnamepath "/profile_2/low_rate/molec_trans"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_latitude profile_2_low_rate_longitude"; } profile_2_low_rate_met_cldprs { Float32 _FillValue 3.402823466e+38; String units "Pa"; String contentType "referenceInformation"; String long_name "cloud_top_pressure"; String standard_name "pressure"; String description "Pressure of the highest cloud top at this location from GEOS5 data"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_cldprs"; String fullnamepath "/profile_2/low_rate/met_cldprs"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_latitude profile_2_low_rate_longitude"; } profile_2_low_rate_bsnow_con { Int16 _FillValue 127; String units "1"; String contentType "modelResult"; String long_name "Blowing snow confidence"; String description "Blowing snow confidence. -3=surface not detected; -2=no surface wind;-1=no scattering layer found; 0=no top layer found; 1=none-little; 2=weak; 3=moderate; 4=moderate-high; 5=high; 6=very high"; String source "Atmosphere ATBD"; String flag_meanings "surface_not_detected no_surface_wind no_scattering_layer_found no_top_layer_found none_little weak moderate moderate_high high very_high"; Int16 flag_values -3, -2, -1, 0, 1, 2, 3, 4, 5, 6; Int16 valid_min -3; Int16 valid_max 6; String origname "bsnow_con"; String fullnamepath "/profile_2/low_rate/bsnow_con"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_latitude profile_2_low_rate_longitude"; } profile_2_low_rate_bsnow_psc { String units "1"; String contentType "modelResult"; String long_name "Blowing snow PSC flag"; String description "Blowing snow PSC flag. Indicates the potential for polar stratospheric clouds to affect the blowing snow retrieval, where 0=none and 3=maximum. This flag is a function of month and hemisphere and is only applied poleward of 60 north and south."; String source "Atmosphere ATBD Section 4.5"; String flag_meanings "none slight moderate maximum_bsnow_PSC_affected"; Int16 flag_values 0, 1, 2, 3; Int16 valid_min 0; Int16 valid_max 3; String origname "bsnow_psc"; String fullnamepath "/profile_2/low_rate/bsnow_psc"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_latitude profile_2_low_rate_longitude"; } profile_2_low_rate_met_v50m { Float32 _FillValue 3.402823466e+38; String units "m s-1"; String contentType "referenceInformation"; String long_name "northward_wind_at_50m"; String standard_name "northward_wind"; String description "Northward wind at 50m above the displacement height (m/s-1)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_v50m"; String fullnamepath "/profile_2/low_rate/met_v50m"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_latitude profile_2_low_rate_longitude"; } profile_2_low_rate_bsnow_h { Float32 _FillValue 3.402823466e+38; String units "meters"; String contentType "modelResult"; String long_name "Blowing snow top h"; String description "Blowing snow layer top height"; String source "Atmosphere ATBD"; String origname "bsnow_h"; String fullnamepath "/profile_2/low_rate/bsnow_h"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_latitude profile_2_low_rate_longitude"; } profile_2_low_rate_met_v10m { Float32 _FillValue 3.402823466e+38; String units "m s-1"; String contentType "referenceInformation"; String long_name "Northward_wind_at_10m"; String standard_name "northward_wind"; String description "Northward wind at 10m above the displacement height (m/s-1)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_v10m"; String fullnamepath "/profile_2/low_rate/met_v10m"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_latitude profile_2_low_rate_longitude"; } profile_2_low_rate_longitude { String units "degrees_east"; String contentType "referenceInformation"; String long_name "Longitude of the ATM histogram"; String standard_name "longitude"; String description "Longitude at the the top of the ATM histogram, WGS84, East=+, derived from the geolocation of the ATM range window."; String source "ATL03g ATBD"; Float64 valid_min -180.00000000000000; Float64 valid_max 180.00000000000000; String origname "longitude"; String fullnamepath "/profile_2/low_rate/longitude"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_latitude"; } profile_2_low_rate_met_ps { Float32 _FillValue 3.402823466e+38; String units "Pa"; String contentType "referenceInformation"; String long_name "Surface Pressure"; String standard_name "pressure"; String description "Surface Pressure (Pa)"; String source "GEOS5 FPIT 3D DFPITI3NVASM"; String origname "met_ps"; String fullnamepath "/profile_2/low_rate/met_ps"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_latitude profile_2_low_rate_longitude"; } profile_2_low_rate_latitude { String units "degrees_north"; String long_name "Latitude of the ATM histogram"; String standard_name "latitude"; String description "Latitude at the the top of the ATM histogram, WGS84, North=+, Derived from the geolocation of the ATM range window."; String source "ATL03g ATBD"; Float64 valid_min -90.000000000000000; Float64 valid_max 90.000000000000000; String contentType "referenceInformation"; String origname "latitude"; String fullnamepath "/profile_2/low_rate/latitude"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_longitude"; } profile_2_low_rate_surf_type { String units "1"; String contentType "referenceInformation"; String long_name "surface type"; 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 source "ATL03 ATBD, Section 4"; String flag_meanings "not_type is_type"; Int16 flag_values 0, 1; Int16 valid_min 0; Int16 valid_max 1; String origname "surf_type"; String fullnamepath "/profile_2/low_rate/surf_type"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_latitude profile_2_low_rate_longitude"; } profile_2_low_rate_met_qv10m { Float32 _FillValue 3.402823466e+38; String units "kg kg-1"; String contentType "referenceInformation"; String long_name "specific_humidity_at_10m"; String standard_name "specific_humidity"; String description "Specific humidity at 10 m above the displacement height (Pa)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_qv10m"; String fullnamepath "/profile_2/low_rate/met_qv10m"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_latitude profile_2_low_rate_longitude"; } profile_2_low_rate_bsnow_od { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Blowing snow OD"; String description "Blowing snow layer optical depth"; String source "Atmosphere ATBD"; String origname "bsnow_od"; String fullnamepath "/profile_2/low_rate/bsnow_od"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_latitude profile_2_low_rate_longitude"; } profile_2_low_rate_met_tqi { Float32 _FillValue 3.402823466e+38; String units "kg m2"; String contentType "referenceInformation"; String long_name "cloud_ice"; String description "Total column cloud ice (Kg/m2)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_tqi"; String fullnamepath "/profile_2/low_rate/met_tqi"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_latitude profile_2_low_rate_longitude"; } profile_2_low_rate_met_t10m { Float32 _FillValue 3.402823466e+38; String units "K"; String contentType "referenceInformation"; String long_name "temperature_at_10m"; String standard_name "temperature"; String description "Temperature at 10m above the displacement height (K)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_t10m"; String fullnamepath "/profile_2/low_rate/met_t10m"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_latitude profile_2_low_rate_longitude"; } profile_2_low_rate_cal_c { String units "Photons*m^3 *sr / J"; String contentType "modelResult"; String long_name "Calibration Constant"; String description "Calibration Constant (for each beam at 1 Hz)"; String source "Atmosphere ATBD"; String origname "cal_c"; String fullnamepath "/profile_2/low_rate/cal_c"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_latitude profile_2_low_rate_longitude"; } profile_2_low_rate_met_tql { Float32 _FillValue 3.402823466e+38; String units "kg m2"; String contentType "referenceInformation"; String long_name "cloud_liquid_water"; String description "Total column cloud liquid water (kg/m2)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_tql"; String fullnamepath "/profile_2/low_rate/met_tql"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_latitude profile_2_low_rate_longitude"; } profile_2_low_rate_met_v2m { Float32 _FillValue 3.402823466e+38; String units "m s-1"; String contentType "referenceInformation"; String long_name "Northward_wind_at_2m"; String standard_name "northward_wind"; String description "Northward wind at 2m above the displacement height (m/s-1)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_v2m"; String fullnamepath "/profile_2/low_rate/met_v2m"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_latitude profile_2_low_rate_longitude"; } profile_2_low_rate_met_ts { Float32 _FillValue 3.402823466e+38; String units "K"; String contentType "referenceInformation"; String long_name "surface_temperature"; String standard_name "temperature"; String description "Surface skin temperature (K)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_ts"; String fullnamepath "/profile_2/low_rate/met_ts"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_latitude profile_2_low_rate_longitude"; } profile_2_low_rate_met_qv2m { Float32 _FillValue 3.402823466e+38; String units "kg kg-1"; String contentType "referenceInformation"; String long_name "specific_humidity_at_2m"; String standard_name "specific_humidity"; String description "Specific humidity at 2 m above the displacement height (Pa)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_qv2m"; String fullnamepath "/profile_2/low_rate/met_qv2m"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_latitude profile_2_low_rate_longitude"; } profile_2_low_rate_molec_bkscat_t { String units "degreesC"; String contentType "modelResult"; String long_name "Temperature profile"; String description "Temperature profiles from 20 km to -1 km"; String source "Atmosphere ATBD"; String origname "molec_bkscat_t"; String fullnamepath "/profile_2/low_rate/molec_bkscat_t"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_latitude profile_2_low_rate_longitude"; } profile_2_low_rate_met_u50m { Float32 _FillValue 3.402823466e+38; String units "m s-1"; String contentType "referenceInformation"; String long_name "Eastward_wind_at_50m"; String standard_name "eastward_wind"; String description "Eastward wind at 50m above the displacement height (m/s-1)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_u50m"; String fullnamepath "/profile_2/low_rate/met_u50m"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_latitude profile_2_low_rate_longitude"; } profile_2_low_rate_met_slp { String units "Pa"; String contentType "modelResult"; String long_name "sea_level_pressure"; String standard_name "sea_level_pressure"; String description "sea-level pressure (Pa)"; String source "GEOS5 FPIT 3D DFPITI3NVASM"; String origname "met_slp"; String fullnamepath "/profile_2/low_rate/met_slp"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_latitude profile_2_low_rate_longitude"; } profile_2_low_rate_met_troppb { Float32 _FillValue 3.402823466e+38; String units "Pa"; String contentType "referenceInformation"; String long_name "blended_tropopause_pressure"; String standard_name "pressure"; String description "Blended tropopause pressure (pa)"; String source "GEOS5 FPIT 2D DFPITT1NXSLV"; String origname "met_troppb"; String fullnamepath "/profile_2/low_rate/met_troppb"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_latitude profile_2_low_rate_longitude"; } profile_2_low_rate_bsnow_prob { Float32 _FillValue 3.402823466e+38; String units "1"; String contentType "modelResult"; String long_name "Blowing Snow Probability"; String description "The probability of blowing snow based on meteorological data."; String source "Atmosphere ATBD Section 4.5.1"; String origname "bsnow_prob"; String fullnamepath "/profile_2/low_rate/bsnow_prob"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_latitude profile_2_low_rate_longitude"; } profile_2_low_rate_mol_backscatter { String units "m-1 sr-1"; String contentType "modelResult"; String long_name "Molecular backscatter profile"; String description "Molecular backscatter profile, 30 m resolution, 20 km to -1 km"; String source "Atmosphere ATBD"; String origname "mol_backscatter"; String fullnamepath "/profile_2/low_rate/mol_backscatter"; String coordinates "profile_2_low_rate_delta_time profile_2_low_rate_latitude profile_2_low_rate_longitude"; } ancillary_data_release { String units "1"; String contentType "auxiliaryInformation"; String long_name "Release Number"; 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 source "Operations"; String origname "release"; String fullnamepath "/ancillary_data/release"; } ancillary_data_end_geoseg { String units "1"; String contentType "auxiliaryInformation"; String long_name "Ending Geolocation Segment"; 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 source "Derived"; String origname "end_geoseg"; String fullnamepath "/ancillary_data/end_geoseg"; } ancillary_data_version { String units "1"; String contentType "auxiliaryInformation"; String long_name "Version"; 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 source "Operations"; String origname "version"; String fullnamepath "/ancillary_data/version"; } ancillary_data_end_region { String units "1"; String contentType "auxiliaryInformation"; String long_name "Ending Region"; 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 source "Derived"; String origname "end_region"; String fullnamepath "/ancillary_data/end_region"; } ancillary_data_atmosphere_normalization2 { String units "1"; String contentType "auxiliaryInformation"; String long_name "normalization2"; String description "normalization flag to use for pass 2"; String source "Atmosphere ATBD"; String flag_meanings "true false"; Int16 flag_values 0, 1; String origname "normalization2"; String fullnamepath "/ancillary_data/atmosphere/normalization2"; } ancillary_data_atmosphere_max_layers { String units "bins"; String contentType "auxiliaryInformation"; String long_name "maximum cloud layers for a profile"; String description "maximum cloud layers for a profile"; String source "Atmosphere ATBD"; String origname "max_layers"; String fullnamepath "/ancillary_data/atmosphere/max_layers"; } ancillary_data_atmosphere_cal_bot_ht { String units "m"; String contentType "auxiliaryInformation"; String long_name "cal_bot_ht"; String description "Bottom height of calibration zone (m)"; String source "Atmosphere ATBD"; String origname "cal_bot_ht"; String fullnamepath "/ancillary_data/atmosphere/cal_bot_ht"; } ancillary_data_atmosphere_surf_dem_span { String units "meters"; String contentType "auxiliaryInformation"; String long_name "DEM Span"; String description "DESM span for surface (m)"; String source "Atmosphere ATBD"; String origname "surf_dem_span"; String fullnamepath "/ancillary_data/atmosphere/surf_dem_span"; } ancillary_data_atmosphere_bs_wind_thres { String units "m/s"; String contentType "auxiliaryInformation"; String long_name "scale factor for layer top threshold"; String description "minimum windspeed for blowing snow"; String source "Atmosphere ATBD"; String origname "bs_wind_thres"; String fullnamepath "/ancillary_data/atmosphere/bs_wind_thres"; } ancillary_data_atmosphere_neighborhood1 { String units "bins"; String contentType "auxiliaryInformation"; String long_name "neighborhood1"; String description "neighborhood to use for pass 1"; String source "Atmosphere ATBD"; String origname "neighborhood1"; String fullnamepath "/ancillary_data/atmosphere/neighborhood1"; } ancillary_data_atmosphere_cal_top_ht { String units "m"; String contentType "auxiliaryInformation"; String long_name "cal_top_ht"; String description "Top height of calibration zone (m)"; String source "Atmosphere ATBD"; String origname "cal_top_ht"; String fullnamepath "/ancillary_data/atmosphere/cal_top_ht"; } ancillary_data_atmosphere_alpha { String units "1"; String contentType "auxiliaryInformation"; String long_name "Scaling factor (a)"; String description "Scaling factor (a) for computation of the magnitude of molecular folding."; String source "Atmosphere ATBD section 2"; String origname "alpha"; String fullnamepath "/ancillary_data/atmosphere/alpha"; } ancillary_data_atmosphere_num_passes { String units "1"; String contentType "auxiliaryInformation"; String long_name "number of passes"; String description "Flag indicating if cloud detection algorithm does one pass or two passes (day, night, twilight)"; String source "Atmosphere ATBD"; String flag_meanings "one two"; Int16 flag_values 0, 1; String origname "num_passes"; String fullnamepath "/ancillary_data/atmosphere/num_passes"; } ancillary_data_atmosphere_size_threshold1 { String units "bins"; String contentType "auxiliaryInformation"; String long_name "size_threshold1"; String description "size_threshold, minimum cluster size, to use for pass 1 (day, night, twilight)"; String source "Atmosphere ATBD"; String origname "size_threshold1"; String fullnamepath "/ancillary_data/atmosphere/size_threshold1"; } ancillary_data_atmosphere_thresh_sensitivity2 { String units "1"; String contentType "auxiliaryInformation"; String long_name "thresh_sensitivity2"; String description "thresh_sensitivity to use for pass 2 (day, night, twilight)"; String source "Atmosphere ATBD"; String origname "thresh_sensitivity2"; String fullnamepath "/ancillary_data/atmosphere/thresh_sensitivity2"; } ancillary_data_atmosphere_quantile2 { String units "1"; String contentType "auxiliaryInformation"; String long_name "quantile2"; String description "quantile to use for pass 2 (day, night, twilight)"; String source "Atmosphere ATBD"; String origname "quantile2"; String fullnamepath "/ancillary_data/atmosphere/quantile2"; } ancillary_data_atmosphere_atlas_tele_fov { String units "radians"; String contentType "auxiliaryInformation"; String long_name "ATLAS Telescope Field of View"; String description "The ATLAS telescope field of view."; String source "Atmosphere ATBD"; String origname "atlas_tele_fov"; String fullnamepath "/ancillary_data/atmosphere/atlas_tele_fov"; } ancillary_data_atmosphere_quantile1 { String units "1"; String contentType "auxiliaryInformation"; String long_name "quantile1"; String description "quantile to use for pass 1 (day, night, twilight)"; String source "Atmosphere ATBD"; String origname "quantile1"; String fullnamepath "/ancillary_data/atmosphere/quantile1"; } ancillary_data_atmosphere_backg_min_solar_elev { String units "1"; String contentType "auxiliaryInformation"; String long_name "Background minimum solar elevation angle"; String description "Background minimum solar elevation angle in Method 1 bkgd comp"; String source "Atmosphere ATBD section 3.3.4"; String origname "backg_min_solar_elev"; String fullnamepath "/ancillary_data/atmosphere/backg_min_solar_elev"; } ancillary_data_atmosphere_layer_flag_cp1 { String units "1"; String contentType "auxiliaryInformation"; String long_name "Layer Flag CP 1"; String description "Cloud_flag_ASR value used in the computation of the consolidated layer flag during daytime when cloud layers were detected."; String source "Atmosphere ATBD"; Int32 valid_min 0; Int32 valid_max 6; String origname "layer_flag_cp1"; String fullnamepath "/ancillary_data/atmosphere/layer_flag_cp1"; } ancillary_data_atmosphere_aclr_use_atlas { String units "1"; String contentType "auxiliaryInformation"; String description "Flag to control the computation of the aclr_true parameter."; String source "Operations"; String flag_meanings "non_water_uses_gnome non_water_uses_ATLAS_ASR"; Int32 flag_values 0, 1; Int32 valid_min 0; Int32 valid_max 1; String long_name "ALR Use ATLAS Flag"; String origname "aclr_use_atlas"; String fullnamepath "/ancillary_data/atmosphere/aclr_use_atlas"; } ancillary_data_atmosphere_a_m2 { String units "meters"; String contentType "auxiliaryInformation"; String long_name "a_m2"; String description "a_m, anisotropy factor, to use for pass 2 (day, night, twilight)"; String source "Atmosphere ATBD"; String origname "a_m2"; String fullnamepath "/ancillary_data/atmosphere/a_m2"; } ancillary_data_atmosphere_cal_select { String units "1"; String contentType "auxiliaryInformation"; String long_name "calibration method used"; String description "The calibration method used in calculation of NRB"; String source "Atmosphere ATBD section 3.3.4"; String flag_meanings "method1 method2 method3"; Int32 flag_values 1, 2, 3; Int32 valid_min 1; Int32 valid_max 3; String origname "cal_select"; String fullnamepath "/ancillary_data/atmosphere/cal_select"; } ancillary_data_atmosphere_cal_default { String units "1"; String contentType "auxiliaryInformation"; String long_name "Default calibration value"; String description "Calibration constant default if it cannot be calculated from the data."; String source "Atmosphere ATBD"; String origname "cal_default"; String fullnamepath "/ancillary_data/atmosphere/cal_default"; } ancillary_data_atmosphere_cloud_det_layer_thick { String units "bins"; String contentType "auxiliaryInformation"; String long_name "Cloud minimum layer"; String description "A layer must be 3 bins thick to be considered a layer."; String source "Atmosphere ATBD"; String origname "cloud_det_layer_thick"; String fullnamepath "/ancillary_data/atmosphere/cloud_det_layer_thick"; } ancillary_data_atmosphere_dtime_select { String units "1"; String contentType "auxiliaryInformation"; String long_name "dead time factor used"; String description "Deadtime factor used."; String source "Control"; String flag_meanings "dtime_fact1 dtime_fact2"; Int32 flag_values 1, 2; Int32 valid_min 1; Int32 valid_max 2; String origname "dtime_select"; String fullnamepath "/ancillary_data/atmosphere/dtime_select"; } ancillary_data_atmosphere_thresh_sensitivity1 { String units "1"; String contentType "auxiliaryInformation"; String long_name "thresh_sensitivity1"; String description "thresh_sensitivity to use for pass 1 (day, night, twilight)"; String source "Atmosphere ATBD"; String origname "thresh_sensitivity1"; String fullnamepath "/ancillary_data/atmosphere/thresh_sensitivity1"; } ancillary_data_atmosphere_cutoff2 { String units "1"; String contentType "auxiliaryInformation"; String long_name "cutoff2"; String description "cutoff to use for pass 2 (day, night, twilight)"; String source "Atmosphere ATBD"; String origname "cutoff2"; String fullnamepath "/ancillary_data/atmosphere/cutoff2"; } ancillary_data_atmosphere_surf_lay_thick { String units "meters"; String contentType "auxiliaryInformation"; String long_name "Surface layer thickness"; String description "Layer thickness for surface (m)"; String source "Atmosphere ATBD"; String origname "surf_lay_thick"; String fullnamepath "/ancillary_data/atmosphere/surf_lay_thick"; } ancillary_data_atmosphere_neighborhood2 { String units "bins"; String contentType "auxiliaryInformation"; String description "neighborhood to use for pass 2"; String source "Atmosphere ATBD"; String long_name "neighborhood2"; String origname "neighborhood2"; String fullnamepath "/ancillary_data/atmosphere/neighborhood2"; } ancillary_data_atmosphere_a_m1 { String units "meters"; String contentType "auxiliaryInformation"; String long_name "a_m1"; String description "a_m, anisotropy factor, to use for pass 1 (day, night, twilight)"; String source "Atmosphere ATBD"; String origname "a_m1"; String fullnamepath "/ancillary_data/atmosphere/a_m1"; } ancillary_data_atmosphere_threshold_segment_length2 { String units "bins"; String contentType "auxiliaryInformation"; String long_name "threshold_segment_length2"; String description "threshold_segment_length to use for pass 2 (day, night, twilight)"; String source "Atmosphere ATBD"; String origname "threshold_segment_length2"; String fullnamepath "/ancillary_data/atmosphere/threshold_segment_length2"; } ancillary_data_atmosphere_thresh_bias1 { String units "photons* square meter/Joule"; String contentType "auxiliaryInformation"; String long_name "thresh_bias1"; String description "thresh_bias to use for pass 1 (day, night, twilight)"; String source "Atmosphere ATBD"; String origname "thresh_bias1"; String fullnamepath "/ancillary_data/atmosphere/thresh_bias1"; } ancillary_data_atmosphere_sigma1 { String units "meters"; String contentType "auxiliaryInformation"; String long_name "sigma1"; String description "sigma to use for pass 1 (day, night, twilight)"; String source "Atmosphere ATBD"; String origname "sigma1"; String fullnamepath "/ancillary_data/atmosphere/sigma1"; } ancillary_data_atmosphere_cutoff1 { String units "1"; String contentType "auxiliaryInformation"; String long_name "cutoff1"; String description "cutoff to use for pass 1 (day, night, twilight)"; String source "Atmosphere ATBD"; String origname "cutoff1"; String fullnamepath "/ancillary_data/atmosphere/cutoff1"; } ancillary_data_atmosphere_snow_age { String units "hours"; String contentType "auxiliaryInformation"; String long_name "Snow Age"; String description "Age of the snow on the ground."; String source "Atmosphere ATBD"; String origname "snow_age"; String fullnamepath "/ancillary_data/atmosphere/snow_age"; } ancillary_data_atmosphere_bs_thresh_scale { String units "1"; String contentType "auxiliaryInformation"; String long_name "scale factor for blowing snow threshold"; String description "scale factor for blowing snow threshold"; String source "Atmosphere ATBD"; String origname "bs_thresh_scale"; String fullnamepath "/ancillary_data/atmosphere/bs_thresh_scale"; } ancillary_data_atmosphere_backg_max_solar_elev { String units "1"; String contentType "auxiliaryInformation"; String long_name "Background maximum solar elevation angle"; String description "Background maximum solar elevation angle in Method 1 bkgd comp"; String source "Atmosphere ATBD section 3.3.4"; String origname "backg_max_solar_elev"; String fullnamepath "/ancillary_data/atmosphere/backg_max_solar_elev"; } ancillary_data_atmosphere_surf_min { String units "counts"; String contentType "auxiliaryInformation"; String long_name "minimum count for a surface type to be considered separate surface type"; String description "minimum count for a surface type to be considered separate surface type"; String source "Atmosphere ATBD"; String origname "surf_min"; String fullnamepath "/ancillary_data/atmosphere/surf_min"; } ancillary_data_atmosphere_downsample2 { String units "bins"; String contentType "auxiliaryInformation"; String long_name "downsample2"; String description "downsample to use for pass 2 (day, night, twilight)"; String source "Atmosphere ATBD"; String origname "downsample2"; String fullnamepath "/ancillary_data/atmosphere/downsample2"; } ancillary_data_atmosphere_downsample1 { String units "bins"; String contentType "auxiliaryInformation"; String long_name "downsample1"; String description "downsample to use for pass 1 (day, night, twilight)"; String source "Atmosphere ATBD"; String origname "downsample1"; String fullnamepath "/ancillary_data/atmosphere/downsample1"; } ancillary_data_atmosphere_receiver_optical_throughput { String units "1"; String contentType "auxiliaryInformation"; String long_name "Receiver Optics Throughput"; String description "Nominal Receiver Optics Throughput"; String source "Atmosphere ATBD"; String origname "receiver_optical_throughput"; String fullnamepath "/ancillary_data/atmosphere/receiver_optical_throughput"; } ancillary_data_atmosphere_normalization1 { String units "1"; String contentType "auxiliaryInformation"; String long_name "normalization1"; String description "normalization flag to use for pass 1"; String source "Atmosphere ATBD"; String flag_meanings "true false"; Int16 flag_values 0, 1; String origname "normalization1"; String fullnamepath "/ancillary_data/atmosphere/normalization1"; } ancillary_data_atmosphere_sigma2 { String units "meters"; String contentType "auxiliaryInformation"; String long_name "sigma2"; String description "sigma to use for pass 2 (day, night, twilight)"; String source "Atmosphere ATBD"; String origname "sigma2"; String fullnamepath "/ancillary_data/atmosphere/sigma2"; } ancillary_data_atmosphere_layer_thick { String units "bins"; String contentType "auxiliaryInformation"; String long_name "minimum layer thickness"; String description "minimum layer thickness"; String source "Atmosphere ATBD"; String origname "layer_thick"; String fullnamepath "/ancillary_data/atmosphere/layer_thick"; } ancillary_data_atmosphere_telescope_area { String units "sq meters"; String contentType "auxiliaryInformation"; String long_name "Telescope Effective Area"; String description "Effective collection area of telescope (At)"; String source "Atmosphere ATBD"; String origname "telescope_area"; String fullnamepath "/ancillary_data/atmosphere/telescope_area"; } ancillary_data_atmosphere_bs_extinc_backs { String units "sr"; String contentType "auxiliaryInformation"; String long_name "Blowing Snow to Extinction Backscatter Ratio"; String description "blowing snow extinct to backscatter ratio"; String source "Atmosphere ATBD"; String origname "bs_extinc_backs"; String fullnamepath "/ancillary_data/atmosphere/bs_extinc_backs"; } ancillary_data_atmosphere_planck_const { String units "Js"; String contentType "auxiliaryInformation"; String long_name "Planck constant (h)"; String description "Planck constant (h)"; String source "Atmosphere ATBD section 2"; String origname "planck_const"; String fullnamepath "/ancillary_data/atmosphere/planck_const"; } ancillary_data_atmosphere_atlas_bandpass_fw { String units "nm"; String contentType "auxiliaryInformation"; String long_name "ATLAS Bandpass Filter Width"; String description "The ATLAS bandpass filter width."; String source "Atmosphere ATBD"; String origname "atlas_bandpass_fw"; String fullnamepath "/ancillary_data/atmosphere/atlas_bandpass_fw"; } ancillary_data_atmosphere_layer_sep { String units "bins"; String contentType "auxiliaryInformation"; String long_name "minimum layer separation"; String description "minimum layer separation"; String source "Atmosphere ATBD"; String origname "layer_sep"; String fullnamepath "/ancillary_data/atmosphere/layer_sep"; } ancillary_data_atmosphere_layer_flag_cp2 { String units "1"; String contentType "auxiliaryInformation"; String long_name "Layer Flag CP 2"; String description "Cloud_flag_ASR value used in the computation of the consolidated layer flag during daytime when no cloud layers were detected."; String source "Atmosphere ATBD"; Int32 valid_min 0; Int32 valid_max 6; String origname "layer_flag_cp2"; String fullnamepath "/ancillary_data/atmosphere/layer_flag_cp2"; } ancillary_data_atmosphere_proc_interval { String units "s"; String contentType "auxiliaryInformation"; String long_name "amount of data processed at one time"; String description "amount of data processed at one time"; String source "Atmosphere ATBD"; String origname "proc_interval"; String fullnamepath "/ancillary_data/atmosphere/proc_interval"; } ancillary_data_atmosphere_surface_signal_source { String units "1"; String contentType "auxiliaryInformation"; String long_name "Signal Source Flag"; String description "Indicates the source of signal information used by ASR."; String source "Atmosphere ATBD"; String flag_meanings "use_atl04 use_atl03"; Int32 flag_values 1, 2; Int32 valid_min 1; Int32 valid_max 2; String origname "surface_signal_source"; String fullnamepath "/ancillary_data/atmosphere/surface_signal_source"; } ancillary_data_atmosphere_detector_efficiency { String units "1"; String contentType "auxiliaryInformation"; String long_name "Detector Quantum Efficiency"; String description "Detector quantum efficiency (Qe)"; String source "Atmosphere ATBD"; String origname "detector_efficiency"; String fullnamepath "/ancillary_data/atmosphere/detector_efficiency"; } ancillary_data_atmosphere_backg_select { String units "1"; String contentType "auxiliaryInformation"; String long_name "background method used"; String description "The background method used in calculation of NRB"; String source "Atmosphere ATBD section 3.3.4"; String flag_meanings "method1 method2 method3"; Int32 flag_values 1, 2, 3; Int32 valid_min 1; Int32 valid_max 3; String origname "backg_select"; String fullnamepath "/ancillary_data/atmosphere/backg_select"; } ancillary_data_atmosphere_bs_lay_max_size { String units "m"; String contentType "auxiliaryInformation"; String long_name "blowing snow maximum layer size"; String description "blowing snow maximum layer size"; String source "Atmosphere ATBD"; String origname "bs_lay_max_size"; String fullnamepath "/ancillary_data/atmosphere/bs_lay_max_size"; } ancillary_data_atmosphere_size_threshold2 { String units "bins"; String contentType "auxiliaryInformation"; String description "size_threshold, minimum cluster size, to use for pass 2 (day, night, twilight)"; String source "Atmosphere ATBD"; String long_name "size_threshold2"; String origname "size_threshold2"; String fullnamepath "/ancillary_data/atmosphere/size_threshold2"; } ancillary_data_atmosphere_asr_cal_factor { String units "1"; String contentType "auxiliaryInformation"; String long_name "ASR CAL factor"; String description "Calibration factor for ASR computation"; String source "Atmosphere ATBD"; String origname "asr_cal_factor"; String fullnamepath "/ancillary_data/atmosphere/asr_cal_factor"; } ancillary_data_atmosphere_thresh_bias2 { String units "photons* square meter/Joule"; String contentType "auxiliaryInformation"; String long_name "thresh_bias2"; String description "thresh_bias to use for pass 2 (day, night, twilight)"; String source "Atmosphere ATBD"; String origname "thresh_bias2"; String fullnamepath "/ancillary_data/atmosphere/thresh_bias2"; } ancillary_data_atmosphere_threshold_segment_length1 { String units "bins"; String contentType "auxiliaryInformation"; String long_name "threshold_segment_length1"; String description "threshold_segment_length to use for pass 1 (day, night, twilight)"; String source "Atmosphere ATBD"; String origname "threshold_segment_length1"; String fullnamepath "/ancillary_data/atmosphere/threshold_segment_length1"; } ancillary_data_atmosphere_cal_lat_bound { String units "degrees_north"; String contentType "auxiliaryInformation"; String long_name "cal_lat_bound"; String description "Calibration constant latitude bound (deg_north)"; String source "Atmosphere ATBD"; String origname "cal_lat_bound"; String fullnamepath "/ancillary_data/atmosphere/cal_lat_bound"; } ancillary_data_atmosphere_bs_top_scale { String units "1"; String contentType "auxiliaryInformation"; String long_name "scale factor for layer top threshold"; String description "scale factor for layer top threshold"; String source "Atmosphere ATBD"; String origname "bs_top_scale"; String fullnamepath "/ancillary_data/atmosphere/bs_top_scale"; } ancillary_data_atmosphere_solar_flux { String units "W/(m^2 nm))"; String contentType "auxiliaryInformation"; String long_name "Solar Flux"; String description "Solar flux at the top of the atmosphere at 532nm."; String source "Atmosphere ATBD"; String origname "solar_flux"; String fullnamepath "/ancillary_data/atmosphere/solar_flux"; } ancillary_data_atlas_sdp_gps_epoch { String units "seconds since 1980-01-06T00:00:00.000000Z"; String contentType "auxiliaryInformation"; String long_name "ATLAS Epoch Offset"; 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 source "Operations"; String origname "atlas_sdp_gps_epoch"; String fullnamepath "/ancillary_data/atlas_sdp_gps_epoch"; } ancillary_data_end_rgt { String units "1"; String contentType "auxiliaryInformation"; String long_name "Ending Reference Groundtrack"; 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 source "Derived"; Int32 valid_min 1; Int32 valid_max 1387; String origname "end_rgt"; String fullnamepath "/ancillary_data/end_rgt"; } ancillary_data_end_delta_time { String units "seconds since 2018-01-01"; String contentType "auxiliaryInformation"; String long_name "ATLAS End Time (Actual)"; String standard_name "time"; 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 source "Derived"; String origname "end_delta_time"; String fullnamepath "/ancillary_data/end_delta_time"; } ancillary_data_end_orbit { String units "1"; String contentType "auxiliaryInformation"; String long_name "Ending Orbit Number"; 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 source "Derived"; String origname "end_orbit"; String fullnamepath "/ancillary_data/end_orbit"; } ancillary_data_start_cycle { String units "1"; String contentType "auxiliaryInformation"; String long_name "Starting Cycle"; 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 source "Derived"; Int32 valid_min 0; Int32 valid_max 99; String origname "start_cycle"; String fullnamepath "/ancillary_data/start_cycle"; } ancillary_data_data_end_utc { String units "1"; String contentType "auxiliaryInformation"; String long_name "End UTC Time of Granule (CCSDS-A, Actual)"; String description "UTC (in CCSDS-A format) of the last data point within the granule."; String source "Derived"; String origname "data_end_utc"; String fullnamepath "/ancillary_data/data_end_utc"; } ancillary_data_control { String units "1"; String contentType "auxiliaryInformation"; String long_name "Control File"; String description "PGE-specific control file used to generate this granule. To re-use, replace breaks (BR) with linefeeds."; String source "Operations"; String origname "control"; String fullnamepath "/ancillary_data/control"; } ancillary_data_start_gpssow { String units "seconds"; String contentType "auxiliaryInformation"; String long_name "Start GPS SOW of Granule (Actual)"; String description "GPS seconds-of-week of the first data point in the granule."; String source "Derived"; String origname "start_gpssow"; String fullnamepath "/ancillary_data/start_gpssow"; } ancillary_data_granule_end_utc { String units "1"; String contentType "auxiliaryInformation"; String long_name "End UTC Time of Granule (CCSDS-A, Requested)"; String description "Requested end time (in UTC CCSDS-A) of this granule."; String source "Derived"; String origname "granule_end_utc"; String fullnamepath "/ancillary_data/granule_end_utc"; } ancillary_data_end_cycle { String units "1"; String contentType "auxiliaryInformation"; String long_name "Ending Cycle"; 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 source "Derived"; Int32 valid_min 0; Int32 valid_max 99; String origname "end_cycle"; String fullnamepath "/ancillary_data/end_cycle"; } ancillary_data_granule_start_utc { String units "1"; String contentType "auxiliaryInformation"; String long_name "Start UTC Time of Granule (CCSDS-A, Requested)"; String description "Requested start time (in UTC CCSDS-A) of this granule."; String source "Derived"; String origname "granule_start_utc"; String fullnamepath "/ancillary_data/granule_start_utc"; } ancillary_data_start_delta_time { String units "seconds since 2018-01-01"; String contentType "auxiliaryInformation"; String long_name "ATLAS Start Time (Actual)"; String standard_name "time"; 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 source "Derived"; String origname "start_delta_time"; String fullnamepath "/ancillary_data/start_delta_time"; } ancillary_data_start_geoseg { String units "1"; String contentType "auxiliaryInformation"; String long_name "Starting Geolocation Segment"; 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 source "Derived"; String origname "start_geoseg"; String fullnamepath "/ancillary_data/start_geoseg"; } ancillary_data_start_orbit { String units "1"; String contentType "auxiliaryInformation"; String long_name "Starting Orbit Number"; 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 source "Derived"; String origname "start_orbit"; String fullnamepath "/ancillary_data/start_orbit"; } ancillary_data_data_start_utc { String units "1"; String contentType "auxiliaryInformation"; String long_name "Start UTC Time of Granule (CCSDS-A, Actual)"; String description "UTC (in CCSDS-A format) of the first data point within the granule."; String source "Derived"; String origname "data_start_utc"; String fullnamepath "/ancillary_data/data_start_utc"; } ancillary_data_end_gpsweek { String units "weeks from 1980-01-06"; String contentType "auxiliaryInformation"; String long_name "Ending GPSWeek of Granule (Actual)"; String description "GPS week number of the last data point in the granule."; String source "Derived"; String origname "end_gpsweek"; String fullnamepath "/ancillary_data/end_gpsweek"; } ancillary_data_start_rgt { String units "1"; String contentType "auxiliaryInformation"; String long_name "Starting Reference Groundtrack"; 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 source "Derived"; Int32 valid_min 1; Int32 valid_max 1387; String origname "start_rgt"; String fullnamepath "/ancillary_data/start_rgt"; } ancillary_data_end_gpssow { String units "seconds"; String contentType "auxiliaryInformation"; String long_name "Ending GPS SOW of Granule (Actual)"; String description "GPS seconds-of-week of the last data point in the granule."; String source "Derived"; String origname "end_gpssow"; String fullnamepath "/ancillary_data/end_gpssow"; } ancillary_data_qa_at_interval { String units "1"; String contentType "auxiliaryInformation"; String long_name "QA Along-Track Interval"; String description "Statistics time interval for along-track QA data."; String source "control"; String origname "qa_at_interval"; String fullnamepath "/ancillary_data/qa_at_interval"; } ancillary_data_start_region { String units "1"; String contentType "auxiliaryInformation"; String long_name "Starting Region"; 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 source "Derived"; String origname "start_region"; String fullnamepath "/ancillary_data/start_region"; } ancillary_data_start_gpsweek { String units "weeks from 1980-01-06"; String contentType "auxiliaryInformation"; String long_name "Start GPSWeek of Granule (Actual)"; String description "GPS week number of the first data point in the granule."; String source "Derived"; String origname "start_gpsweek"; String fullnamepath "/ancillary_data/start_gpsweek"; } ds_surf_type { String units "1"; String contentType "auxiliaryInformation"; String long_name "Surface Type Dimension Scale"; 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; Int32 valid_min 1; Int32 valid_max 5; String origname "ds_surf_type"; String fullnamepath "/ds_surf_type"; } orbit_info_crossing_time { String units "seconds since 2018-01-01"; String contentType "referenceInformation"; String long_name "Ascending Node Crossing Time"; String standard_name "time"; 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 source "POD/PPD"; String origname "crossing_time"; String fullnamepath "/orbit_info/crossing_time"; } orbit_info_sc_orient_time { String units "seconds since 2018-01-01"; String contentType "referenceInformation"; String long_name "Time of Last Spacecraft Orientation Change"; String standard_name "time"; 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 source "POD/PPD"; String origname "sc_orient_time"; String fullnamepath "/orbit_info/sc_orient_time"; } profile_1_bckgrd_atlas_delta_time { String units "seconds since 2018-01-01"; String contentType "physicalMeasurement"; String long_name "Elapsed GPS seconds"; String standard_name "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 source "Derived via Time Tagging"; String coordinates "delta_time"; String origname "delta_time"; String fullnamepath "/profile_1/bckgrd_atlas/delta_time"; } profile_1_high_rate_delta_time { String units "seconds since 2018-01-01"; String contentType "modelResult"; String long_name "Elapsed GPS seconds"; String standard_name "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 source "Atmosphere ATBD"; String coordinates "latitude longitude"; String origname "delta_time"; String fullnamepath "/profile_1/high_rate/delta_time"; } profile_1_high_rate_ds_layers { String units "counts"; String contentType "auxiliaryInformation"; String long_name "Cloud Layers Dimension Scale"; String description "Dimension scale indexing the cloud layers."; String source "Atmosphere ATBD"; Int32 valid_min 1; Int32 valid_max 10; String origname "ds_layers"; String fullnamepath "/profile_1/high_rate/ds_layers"; } profile_1_high_rate_ds_va_bin_h { String units "meters"; String contentType "auxiliaryInformation"; String long_name "VA Bin Height Dimension Scale"; String description "Dimension scale containing the heights of the vertically-aligned bins."; String source "Atmosphere ATBD"; Float32 valid_min -955.5000000; Float32 valid_max 20000.00000; String origname "ds_va_bin_h"; String fullnamepath "/profile_1/high_rate/ds_va_bin_h"; } profile_1_low_rate_delta_time { String units "seconds since 2018-01-01"; String contentType "referenceInformation"; String long_name "Elapsed GPS seconds"; String standard_name "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 source "telemetry"; String coordinates "latitude longitude"; String origname "delta_time"; String fullnamepath "/profile_1/low_rate/delta_time"; } profile_1_low_rate_ds_va_bin_h { String units "meters"; String contentType "auxiliaryInformation"; String long_name "VA Bin Height Dimension Scale"; String description "Dimension scale containing the heights of the vertically-aligned bins."; String source "Atmosphere ATBD"; Float32 valid_min -955.5000000; Float32 valid_max 20000.00000; String origname "ds_va_bin_h"; String fullnamepath "/profile_1/low_rate/ds_va_bin_h"; } profile_2_bckgrd_atlas_delta_time { String units "seconds since 2018-01-01"; String contentType "physicalMeasurement"; String long_name "Elapsed GPS seconds"; String standard_name "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 source "Derived via Time Tagging"; String coordinates "delta_time"; String origname "delta_time"; String fullnamepath "/profile_2/bckgrd_atlas/delta_time"; } profile_2_high_rate_delta_time { String units "seconds since 2018-01-01"; String contentType "modelResult"; String long_name "Elapsed GPS seconds"; String standard_name "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 source "Atmosphere ATBD"; String coordinates "latitude longitude"; String origname "delta_time"; String fullnamepath "/profile_2/high_rate/delta_time"; } profile_2_high_rate_ds_layers { String units "counts"; String contentType "auxiliaryInformation"; String long_name "Cloud Layers Dimension Scale"; String description "Dimension scale indexing the cloud layers."; String source "Atmosphere ATBD"; Int32 valid_min 1; Int32 valid_max 10; String origname "ds_layers"; String fullnamepath "/profile_2/high_rate/ds_layers"; } profile_2_high_rate_ds_va_bin_h { String units "meters"; String contentType "auxiliaryInformation"; String long_name "VA Bin Height Dimension Scale"; String description "Dimension scale containing the heights of the vertically-aligned bins."; String source "Atmosphere ATBD"; Float32 valid_min -955.5000000; Float32 valid_max 20000.00000; String origname "ds_va_bin_h"; String fullnamepath "/profile_2/high_rate/ds_va_bin_h"; } profile_2_low_rate_delta_time { String units "seconds since 2018-01-01"; String contentType "referenceInformation"; String long_name "Elapsed GPS seconds"; String standard_name "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 source "telemetry"; String coordinates "latitude longitude"; String origname "delta_time"; String fullnamepath "/profile_2/low_rate/delta_time"; } profile_2_low_rate_ds_va_bin_h { String units "meters"; String contentType "auxiliaryInformation"; String long_name "VA Bin Height Dimension Scale"; String description "Dimension scale containing the heights of the vertically-aligned bins."; String source "Atmosphere ATBD"; Float32 valid_min -955.5000000; Float32 valid_max 20000.00000; String origname "ds_va_bin_h"; String fullnamepath "/profile_2/low_rate/ds_va_bin_h"; } profile_3_bckgrd_atlas_delta_time { String units "seconds since 2018-01-01"; String contentType "physicalMeasurement"; String long_name "Elapsed GPS seconds"; String standard_name "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 source "Derived via Time Tagging"; String coordinates "delta_time"; String origname "delta_time"; String fullnamepath "/profile_3/bckgrd_atlas/delta_time"; } profile_3_high_rate_delta_time { String units "seconds since 2018-01-01"; String contentType "modelResult"; String long_name "Elapsed GPS seconds"; String standard_name "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 source "Atmosphere ATBD"; String coordinates "latitude longitude"; String origname "delta_time"; String fullnamepath "/profile_3/high_rate/delta_time"; } profile_3_high_rate_ds_layers { String units "counts"; String contentType "auxiliaryInformation"; String long_name "Cloud Layers Dimension Scale"; String description "Dimension scale indexing the cloud layers."; String source "Atmosphere ATBD"; Int32 valid_min 1; Int32 valid_max 10; String origname "ds_layers"; String fullnamepath "/profile_3/high_rate/ds_layers"; } profile_3_high_rate_ds_va_bin_h { String units "meters"; String contentType "auxiliaryInformation"; String long_name "VA Bin Height Dimension Scale"; String description "Dimension scale containing the heights of the vertically-aligned bins."; String source "Atmosphere ATBD"; Float32 valid_min -955.5000000; Float32 valid_max 20000.00000; String origname "ds_va_bin_h"; String fullnamepath "/profile_3/high_rate/ds_va_bin_h"; } profile_3_low_rate_delta_time { String units "seconds since 2018-01-01"; String contentType "referenceInformation"; String long_name "Elapsed GPS seconds"; String standard_name "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 source "telemetry"; String coordinates "latitude longitude"; String origname "delta_time"; String fullnamepath "/profile_3/low_rate/delta_time"; } profile_3_low_rate_ds_va_bin_h { String units "meters"; String contentType "auxiliaryInformation"; String long_name "VA Bin Height Dimension Scale"; String description "Dimension scale containing the heights of the vertically-aligned bins."; String source "Atmosphere ATBD"; Float32 valid_min -955.5000000; Float32 valid_max 20000.00000; String origname "ds_va_bin_h"; String fullnamepath "/profile_3/low_rate/ds_va_bin_h"; } FakeDim0 { String units "level"; } FakeDim1 { String units "level"; } DODS_EXTRA { String Unlimited_Dimension "orbit_info_crossing_time", "orbit_info_sc_orient_time", "profile_1_bckgrd_atlas_delta_time", "profile_1_high_rate_delta_time", "profile_1_low_rate_delta_time", "profile_2_bckgrd_atlas_delta_time", "profile_2_high_rate_delta_time", "profile_2_low_rate_delta_time", "profile_3_bckgrd_atlas_delta_time", "profile_3_high_rate_delta_time", "profile_3_low_rate_delta_time"; } }