Attributes { HDF5_GLOBAL { String short_name "ATL12"; String level "L3A"; String title "SET_BY_META"; String description "Sea Surface Height (SSH) of the global open ocean including the ice-free seasonal ice zone (SIZ) and near-coast regions."; String Conventions "CF-1.6"; String contributor_name "Thomas E Neumann (thomas.neumann@nasa.gov), Thorsten Markus (thorsten.markus@nasa.gov), Suneel Bhardwaj (suneel.bhardwaj@nasa.gov) David W Hancock III (david.w.hancock@nasa.gov)"; String contributor_role "Instrument Engineer, Investigator, Principle Investigator, Data Producer, Data Producer"; String date_type "UTC"; String featureType "trajectory"; String geospatial_lat_units "degrees_north"; String geospatial_lon_units "degrees_east"; String granule_type "ATL12"; String identifier_product_doi_authority "http://dx.doi.org"; 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 "2021-02-12T13:42:57.000000Z"; String hdfversion "HDF5 1.10.3"; String history "2021-02-12T13:42:57.000000Z;af02de36-dc13-321c-a5f3-4abf1cd1fca7;Created by PGE atlas_l3a_oc Version 4.4"; String identifier_file_uuid "af02de36-dc13-321c-a5f3-4abf1cd1fca7"; String identifier_product_format_version "4.4"; Float64 time_coverage_duration 22630.000000000000; String time_coverage_end "2019-03-31T03:39:51.000000Z"; String time_coverage_start "2019-03-30T21:22:41.000000Z"; Float64 geospatial_lat_min -74.779472545908291; Float64 geospatial_lon_min -121.12279892145266; Float64 geospatial_lat_max 88.040488587025166; Float64 geospatial_lon_max 153.00250167637927; String publisher_name "NSIDC DAAC > NASA National Snow and Ice Data Center Distributed Active Archive Center"; String publisher_email "nsidc@nsidc.org"; String publisher_url "http://nsidc.org/daac/"; String identifier_product_type "ATL12"; String identifier_product_doi "doi:10.5067/ATLAS/ATL12.004"; String institution "National Aeronautics and Space Administration (NASA)"; String creator_name "GSFC I-SIPS > ICESat-2 Science Investigator-led Processing System"; String summary "The purpose of ATL12 is to provide along-track sea surface heights and associated statistics."; String keywords "EARTH SCIENCE > OCEANS > SEA SURFACE TOPOGRAPHY > SEA SURFACE HEIGHT > 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 " ATL12_20190330212241_00250301_004_02.h5 NSIDC DAAC > National Snow and Ice Data Center DAAC nsidc@nsidc.org http://nsidc.org/daac/ pointOfContact 2021-02-12T13:42:57.000000Z ISO 19115-2 Geographic information - Metadata - Part 2: Extensions for imagery and gridded data ISO 19115-2:2009-02-15 ATL12_20190330212241_00250301_004_02.h5 2021-02-12T13:42:57.000000Z creation ATL12 The ECS Short Name 004 The ECS Version ID ATL12_20190330212241_00250301_004_02.h5 ProducerGranuleId The ICESat-2 ATL12 standard data product contains along-track sea surface heights at variable length scales over cloud-free regions. Include estimates of height distributions, surface roughness, surface slope, and apparent reflectance. onGoing ATL12 004 largerWorkCitation eng geoscientificInformation AscendingCrossing: 153.00800985196710 StartLatitude: 0.0000000000000000 StartDirection:A EndLatitude: 0.0000000000000000 EndDirection: A gov.nasa.esdis.umm.orbitparameters OrbitParameters OrbitNumber: 3000 EquatorCrossingLongitude: 153.00800985196710 EquatorCrossingDateTime: 2019-03-30T21:22:41.968203Z gov.nasa.esdis.umm.orbitcalculatedspatialdomains OrbitCalculatedSpatialDomains OrbitNumber: 3001 EquatorCrossingLongitude: 129.38938089818646 EquatorCrossingDateTime: 2019-03-30T22:56:59.313118Z gov.nasa.esdis.umm.orbitcalculatedspatialdomains OrbitCalculatedSpatialDomains OrbitNumber: 3002 EquatorCrossingLongitude: 105.76958231202948 EquatorCrossingDateTime: 2019-03-31T00:31:16.716515Z gov.nasa.esdis.umm.orbitcalculatedspatialdomains OrbitCalculatedSpatialDomains OrbitNumber: 3003 EquatorCrossingLongitude: 82.148677287185407 EquatorCrossingDateTime: 2019-03-31T02:05:34.187859Z gov.nasa.esdis.umm.orbitcalculatedspatialdomains OrbitCalculatedSpatialDomains 2019-03-30T21:22:43.285155Z 2019-03-31T03:39:51.343881Z dataset 2021-02-12T13:42:57.000000Z;af02de36-dc13-321c-a5f3-4abf1cd1fca7;Created by PGE atlas_l3a_oc Version 4.4 2021-02-12T13:42:57.000000Z "; String iso_19139_series_xml " ATL12.004 eng utf8 series NSIDC DAAC > NASA National Snow and Ice Data Center Distributed Active Archive Center 303-492-6199 303-492-2468 1540 30th St Campus Box 449 Boulder Colorado 80309-0449 USA nsidc@nsidc.org http://nsidc.org/daac/ 9:00 A.M. to 5:00 P.M., U.S. Mountain Time, Monday through Friday, excluding U.S. holidays. Contact by e-mail first pointOfContact 2015-10-15 ISO 19115-2 Geographic information - Metadata - Part 2: Extensions for imagery and gridded data ISO 19115-2:2009(E) ATLAS/ICESat-2 L3A Ocean Surface Height 2016-06-09 revision 004 ATL12 The ECS Short Name 004 The ECS Version ID doi:10.5067/ATLAS/ATL12.004 gov.nasa.esdis A Digital Object Identifier (DOI) National Aeronautics and Space Administration (NASA) resourceProvider GSFC I-SIPS > ICESat-2 Science Investigator-led Processing System originator Initial version of the processing software The ICESat-2 ATL12 standard data product contains along-track sea surface heights at variable length scales over cloud-free regions. Include estimates of height distributions, surface roughness, surface slope, and apparent reflectance. The purpose of ATL12 is to provide along-track sea surface heights and associated statistics. The software that generates the ATL12 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 > OCEANS > SEA SURFACE TOPOGRAPHY > SEA SURFACE HEIGHT > NONE > NONE > NONE EARTH SCIENCE > OCEANS > SEA SURFACE TOPOGRAPHY > SEA SURFACE SLOPE > NONE > NONE > NONE theme NASA/GCMD Science Keywords NASA Global Change Master Directory (GCMD) User Support Office NASA Global Change Master Directory, Goddard Space Flight Center Greenbelt MD 20771 USA gcmduso@gcmd.gsfc.nasa.gov http://gcmd.nasa.gov/ http web browser NASA Global Change Master Directory (GCMD) Home Page information http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso custodian Global Change Master Directory (GCMD) NASA Global Change Master Directory, Goddard Space Flight Center Greenbelt MD 20771 USA gcmduso@gcmd.gsfc.nasa.gov http://gcmd.nasa.gov/Resources/valids/ http web browser NASA Global Change Master Directory (GCMD) Keyword Page This page describes the NASA GCMD Keywords, how to reference those keywords and provides download instructions. download http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso custodian GEOGRAPHIC REGION > GLOBAL place NASA/GCMD Location Keywords NASA/NSIDC_DAAC > NASA National Snow and Ice Data Center Distributed Active Archive Center dataCenter NASA/GCMD Data Center Keywords Earth Observation Satellites > NASA Decadal Survey > ICESAT-2 > Ice, Cloud, and land Elevation Satellite-2 platform NASA/GCMD Platform Keywords Earth Remote Sensing Instruments > Active Remote Sensing > Altimeters > Lidar/Laser Altimeters > ATLAS > Advanced Topographic Laser Altimeter System instrument NASA/GCMD Instrument Keywords Cite these data in publications as follows: The data used in this study were produced by the ICESat-2 Science Project Office at NASA/GSFC. The data archive site is the NASA National Snow and Ice Data Center Distributed Active Archive Center. eng geoscientificInformation SpatialCoverageType=HORIZONTAL, SpatialGranuleSpatialRepresentation=ORBIT, TemporalRangeType=Continuous Range, TimeType=UTC -180.0 180.0 -90.0 90.0 SwathWidth: 36.0 Period: 96.8 InclinationAngle: 92.0 NumberOfOrbits: 4.0 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 http://dx.doi.org/10.5067/ATLAS/ATL12.004 http Digital Object Identifier URL information ATLAS > Advanced Topographic Laser Altimeter System ATLAS Advanced Topographic Laser Altimeter System Laser Altimeter ATLAS on ICESat-2 determines the range between the satellite and the Earth's surface by measuring the two-way time delay of short pulses of laser light that it transmits in six beams. It is different from previous operational ice-sheet altimeters in that it is a photon-counting LIDAR. ATLAS records a set of arrival times for individual photons, which are then analyzed to derive surface, vegetation, and cloud properties. ATLAS has six beams arranged in three pairs, so that it samples each of three reference pair tracks with a pair of beams; ATLAS transmits pulses at 10 kHz, giving approximately one pulse every 0.7 m along track; ATLAS's expected pointing control will be better than 90 m RMS. ICESat-2 > Ice, Cloud, and land Elevation Satellite-2 ICESat-2 > Ice, Cloud, and land Elevation Satellite-2 ICESat-2 Ice, Cloud, and land Elevation Satellite-2 underDevelopment ICESat-2 > Ice, Cloud, and land Elevation Satellite-2 ICESat-2 Ice, Cloud, and land Elevation Satellite-2 Spacecraft "; String fullnamepath "/METADATA"; } METADATA_AcquisitionInformation { } METADATA_AcquisitionInformation_lidar { String pulse_rate "10000 pps"; String wavelength "532 nm"; String identifier "ATLAS"; String type "Laser Altimeter"; String description "ATLAS on ICESat-2 determines the range between the satellite and the Earth's surface by measuring the two-way time delay of short pulses of laser light that it transmits in six beams. It is different from previous operational ice-sheet altimeters in that it is a photon-counting LIDAR. ATLAS records a set of arrival times for individual photons, which are then analyzed to derive surface, vegetation, and cloud properties. ATLAS has six beams arranged in three pairs, so that it samples each of three reference pair tracks with a pair of beams; ATLAS transmits pulses at 10 kHz, giving approximately one pulse every 0.7 m along track; ATLAS's expected pointing control will be better than 90 m RMS."; String fullnamepath "/METADATA/AcquisitionInformation/lidar"; } METADATA_AcquisitionInformation_lidarDocument { String edition "Pre-Release"; String publicationDate "12/31/17"; String title "A document describing the ATLAS instrument will be provided by the ICESat-2 Project Science Office."; String fullnamepath "/METADATA/AcquisitionInformation/lidarDocument"; } METADATA_AcquisitionInformation_platform { String identifier "ICESat-2"; String description "Ice, Cloud, and land Elevation Satellite-2"; String type "Spacecraft"; String fullnamepath "/METADATA/AcquisitionInformation/platform"; } METADATA_AcquisitionInformation_platformDocument { String edition "31-Dec-16"; String publicationDate "31-Dec-16"; String title "The Ice, Cloud, and land Elevation Satellite-2 (ICESat-2): Science requirements, concept, and implementation. Thorsten Markus, Tom Neumann, Anthony Martino, Waleed Abdalati, Kelly Brunt, Beata Csatho, Sinead Farrell, Helen Fricker, Alex Gardner, David Harding, Michael Jasinski, Ron Kwok, Lori Magruder, Dan Lubin, Scott Luthcke, James Morison, Ross Nelson, Amy Neuenschwander, Stephen Palm, Sorin Popescu, CK Shum, Bob E. Schutz, Benjamin Smith, Yuekui Yang, Jay Zwally. http://dx.doi.org/10.1016/j.rse.2016.12.029"; String fullnamepath "/METADATA/AcquisitionInformation/platformDocument"; } METADATA_DataQuality { String scope "NOT_SET"; String fullnamepath "/METADATA/DataQuality"; } METADATA_DataQuality_CompletenessOmission { String evaluationMethodType "directInternal"; String measureDescription "TBD"; String nameOfMeasure "TBD"; String unitofMeasure "TBD"; String value "NOT_SET"; String fullnamepath "/METADATA/DataQuality/CompletenessOmission"; } METADATA_DataQuality_DomainConsistency { String evaluationMethodType "directInternal"; String measureDescription "TBD"; String nameOfMeasure "TBD"; String unitofMeasure "TBD"; String value "NOT_SET"; String fullnamepath "/METADATA/DataQuality/DomainConsistency"; } METADATA_ProductSpecificationDocument { String ShortName "ATL12_SDP"; String characterSet "utf8"; String edition "v4.3"; String language "eng"; String publicationDate "12/1/2017"; String title "ICESat-2-SIPS-SPEC-4266 - ATLAS Science Algorithm Standard Data Product (SDP) Volume 11 (ATL12). Revision B."; String fullnamepath "/METADATA/ProductSpecificationDocument"; } METADATA_SeriesIdentification { String maintenanceAndUpdateFrequency "asNeeded"; String maintenanceDate "SET_BY_META"; String VersionID "004"; String language "eng"; String characterSet "utf8"; String pointOfContact "NSIDC DAAC > NASA National Snow and Ice Data Center Distributed Active Archive Center"; String longName "ATLAS/ICESat-2 L3A Ocean Surface Height"; String shortName "ATL12"; String identifier_product_DOI "doi:10.5067/ATLAS/ATL12.004"; String revisionDate "2016-06-09"; String resourceProviderOrganizationName "National Aeronautics and Space Administration (NASA)"; String abstract "The ICESat-2 ATL12 standard data product contains along-track sea surface heights at variable length scales over cloud-free regions. Include estimates of height distributions, surface roughness, surface slope, and apparent reflectance."; String purpose "The purpose of ATL12 is to provide along-track sea surface heights and associated statistics."; String credit "The software that generates the ATL12 product was designed and implemented within the ICESat-2 Science Investigator-led Processing System at the NASA Goddard Space Flight Center in Greenbelt, Maryland."; String status "onGoing"; String format "HDF"; String formatVersion "5"; String topicCategory "geoscientificInformation"; String mission "ICESat-2 > Ice, Cloud, and land Elevation Satellite-2"; String fullnamepath "/METADATA/SeriesIdentification"; } METADATA_DatasetIdentification { String spatialRepresentationType "along-track"; String creationDate "2021-02-12T13:42:57.000000Z"; String uuid "af02de36-dc13-321c-a5f3-4abf1cd1fca7"; String fileName "ATL12_20190330212241_00250301_004_02.h5"; String VersionID "004"; String language "eng"; String characterSet "utf8"; String shortName "ATL12"; String originatorOrganizationName "GSFC I-SIPS > ICESat-2 Science Investigator-led Processing System"; String abstract "The ICESat-2 ATL12 standard data product contains along-track sea surface heights at variable length scales over cloud-free regions. Include estimates of height distributions, surface roughness, surface slope, and apparent reflectance."; String purpose "The purpose of ATL12 is to provide along-track sea surface heights and associated statistics."; String credit "The software that generates the ATL12 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 88.040488587025166; Float64 eastBoundLongitude 153.00250167637927; Float64 southBoundLatitude -74.779472545908291; Float64 westBoundLongitude -121.12279892145266; String rangeBeginningDateTime "2019-03-30T21:22:43.285155Z"; String rangeEndingDateTime "2019-03-31T03:39:51.343881Z"; String fullnamepath "/METADATA/Extent"; } METADATA_QADatasetIdentification { String abstract "An ASCII product that contains statistical information on data product results. These statistics enable data producers and users to assess the quality of the data in the data product granule"; String creationDate "2021-02-12T21:54:39.000000Z"; String fileName "ATL12_20190330212241_00250301_004_02.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_oc_005983079.ctl"; String shortName "CNTL"; String version "1"; String fullnamepath "/METADATA/Lineage/Control"; } METADATA_Lineage_ANC25_12 { String description "HDF5 template file that defines the organization and default content of the product."; String fileName "ANC25-12_20210107155833_044_01.h5"; String shortName "ANC25-12"; String uuid "6313e204-a0ad-3fa9-876c-0ef33464edde"; String version "044"; String fullnamepath "/METADATA/Lineage/ANC25-12"; } METADATA_Lineage_ANC41 { String description "Contains transmit pulse information derived from an aggregation of Transmit Echo Pulse (TEP) photons."; String fileName "SET_BY_PGE"; String shortName "SET_BY_PGE"; String uuid "SET_BY_PGE"; String version "SET_BY_PGE"; String fullnamepath "/METADATA/Lineage/ANC41"; } METADATA_Lineage_ANC36_12 { String description "ISO 19139 XML file containing Series-level metadata information."; String fileName "ANC36-12_20210107160638_004_01.xml"; String shortName "ANC36-12"; String uuid "3f5a2c4f-4f17-36c3-92c2-d4afa66d1b78"; String version "004"; String fullnamepath "/METADATA/Lineage/ANC36-12"; } METADATA_Lineage_ANC26_12 { String description "HDF5 template file that defines the organization and default content of the product metadata."; String fileName "ANC26-12_20210107155839_044_01.h5"; String shortName "ANC26-12"; String uuid "dbff7551-b136-3bab-a007-74bf294c48f4"; String version "044"; String fullnamepath "/METADATA/Lineage/ANC26-12"; } METADATA_Lineage_ATL03 { String description "ICESat-2 ATLAS L2A Global Geolocated Photon data products."; 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String shortName "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000", "ATL03\000"; String uuid "65a1e017-0e8f-3870-810f-54e8d909868b\000", "3b2658d4-6a6c-38a7-8059-8399f7aff925\000", "2474298b-e235-366e-86f1-0cc086a663b0\000", "895168c3-d507-3fcf-9094-dae720b30e64\000", "2d006f45-890e-36dc-8fa3-f60b9c0e91e1\000", "3b908876-0e26-3126-8b1c-389232c21930\000", "d0991a83-2032-341a-96bc-c9b3e3df3f69\000", "3ddac848-9424-34d1-8e2e-fbfd3a13121e\000", "320c0a4f-c892-3453-93d1-89c55410da68\000", "82f8c9c6-a2a3-3346-b66e-8edb8f26a55d\000", "8292b24d-7ad9-3efe-bbe0-c732b2b82861\000", "1e0db1fd-9359-3079-84a7-6cf7aabb6125\000", "cfb7ce23-bc42-3dab-afe1-eb1ea21df379\000", "5a7ed1b9-fca4-3371-8339-306c52012611\000", "11910f33-3f97-324b-99e8-7ea805c5f29c\000", "a6ee1b9b-c71c-37d5-b04b-23727e63b5ad\000", "fe8087f3-c6a5-3ffe-9ebf-8cb3bf9f7fdd\000", "c1f04dfd-c091-38c3-b9be-1e0c94fb0565\000", "3f01494c-e543-3482-9b64-f94abd53690e\000", "6e26aaa8-2d3a-3f56-925e-35ce81916060\000", "f65137c6-ec4d-3f0f-b393-ec93edd4af9c\000", "96c8d34c-077a-329c-b543-9cab03d0dd77\000", "ffbe658b-60da-3f63-87fc-95b288a733ac\000", "6eb9a88d-0d62-30d2-9883-21ec67cdbc53\000", "a2a1d968-d743-319d-9f4d-42121dc50ae7\000", "db43e8d6-480e-3af2-b5ad-394c9377b2c8\000", "2ca53b6e-c34a-34f5-87ca-5e65f16ce8d5\000", "8f65c27a-a196-36a1-a565-3aa616bcb40f\000", "2d987b2d-e82b-3734-9687-05444557b477\000", "545501e1-3978-3259-9ea5-8b13e3b4cc0d\000", "2039f62f-e9fc-3562-af7d-aed2b7075a88\000", "7e696705-adc9-3e5e-ba6e-fd0d9b33f26c\000", "6ee9c0a2-735f-34e6-93c2-3d440c420784\000", "703be5a3-543d-3c78-b6c7-9332e19bb496\000", "fef3c673-8783-314e-b589-87d2d6c95fc2\000", "655b9d12-f599-3291-aead-63d95c788908\000", "b628873c-183a-3f15-8313-3b31ea83b506\000", "1ef2638f-d04e-3990-ac7e-97d72af1cee8\000", "d22ec0a2-9639-34a7-909f-57ea53850fa2\000", "40d4f61b-abbf-32a6-af73-e3f9fb015cae\000", "5ad118c7-91e6-3213-883d-fb62ea834f76\000", "69922b02-8ee5-32cd-9f89-f30534fce0c2\000", "d898605f-3785-301d-b747-dd230c0245c0\000", "6e2dbb66-af7a-3761-ba53-c861eaf5480f\000", "29df4e86-0b6e-3a0d-a444-bcd971129a5f\000", "cbabbb79-2ceb-3708-b87e-56603fed3961\000", "254efd10-1b3b-3bdf-91e5-36674032d904\000", "0f4331a5-0e9d-3176-8d16-28212524126d\000", "d04a767f-ca7d-3c10-b47d-de64d1522741\000", "2fc1849a-5fbe-3748-8397-3dd9eb464891\000", "9aa94d50-7f2d-3b0b-b2fc-5c37d46ef0b9\000", "fbd229e4-17f5-3896-89f5-755e11c42eb2\000", "1cadc4e8-7771-3632-9d06-0285cb288c26\000", "c8f20d6c-ca21-308f-880e-72cfe19cb037\000"; String version "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000", "004\000"; Int32 start_cycle 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3; Int32 end_cycle 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3; Int32 start_orbit 3000, 3000, 3000, 3000, 3000, 3000, 3000, 3000, 3000, 3000, 3000, 3000, 3000, 3000, 3001, 3001, 3001, 3001, 3001, 3001, 3001, 3001, 3001, 3001, 3001, 3001, 3001, 3001, 3002, 3002, 3002, 3002, 3002, 3002, 3002, 3002, 3002, 3002, 3002, 3002, 3003, 3003, 3003, 3003, 3003, 3003, 3003, 3003, 3003, 3003, 3003, 3003, 3003, 3003; Int32 end_orbit 3000, 3000, 3000, 3000, 3000, 3000, 3000, 3000, 3000, 3000, 3000, 3000, 3000, 3000, 3001, 3001, 3001, 3001, 3001, 3001, 3001, 3001, 3001, 3001, 3001, 3001, 3001, 3001, 3002, 3002, 3002, 3002, 3002, 3002, 3002, 3002, 3002, 3002, 3002, 3002, 3003, 3003, 3003, 3003, 3003, 3003, 3003, 3003, 3003, 3003, 3003, 3003, 3003, 3003; Int32 start_rgt 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28; Int32 end_rgt 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28; Int32 start_region 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 13, 14, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14; Int32 end_region 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 13, 14, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14; Int32 start_geoseg 1, 149703, 330726, 446059, 555744, 671076, 852096, 1001797, 1151688, 1280087, 1443580, 1565330, 1728829, 1857236, 1, 149709, 330736, 446067, 555756, 671083, 852097, 1001793, 1151682, 1280081, 1443573, 1565328, 1728826, 1857233, 1, 149708, 330735, 446065, 555758, 671087, 852107, 1001807, 1151698, 1280097, 1728833, 1857235, 1, 149706, 330732, 446065, 555762, 671094, 852121, 1001826, 1151720, 1280119, 1443607, 1565358, 1728844, 1857240; Int32 end_geoseg 149702, 330725, 446058, 555743, 671075, 852095, 1001796, 1151687, 1280086, 1443579, 1565329, 1728828, 1857235, 2007137, 149708, 330735, 446066, 555755, 671082, 852096, 1001792, 1151681, 1280080, 1443572, 1565327, 1728825, 1857232, 2007134, 149707, 330734, 446064, 555757, 671086, 852106, 1001806, 1151697, 1280096, 1443585, 1857234, 2007130, 149705, 330731, 446064, 555761, 671093, 852120, 1001825, 1151719, 1280118, 1443606, 1565357, 1728843, 1857239, 2007130; String fullnamepath "/METADATA/Lineage/ATL03"; } METADATA_Lineage_ATL09 { String description "ICESat-2 ATLAS L3A atmosphere data products."; String fileName "ATL09_20190330212241_00250301_004_01.h5\000", "ATL09_20190330225659_00260301_004_01.h5\000", "ATL09_20190331003116_00270301_004_01.h5\000", "ATL09_20190331020534_00280301_004_01.h5\000"; String shortName "ATL09\000", "ATL09\000", "ATL09\000", "ATL09\000"; String uuid "67062f59-2866-3cab-8988-a8c6321df536\000", "654b7e37-e85f-3a5f-8a98-d7d8711c926a\000", "96af56c9-52ea-3b1c-9f3c-ce790e81b9f0\000", "6e2191cf-39d4-3f9c-8a84-50bba7edd150\000"; String version "004\000", "004\000", "004\000", "004\000"; Int32 start_cycle 3, 3, 3, 3; Int32 end_cycle 3, 3, 3, 3; Int32 start_orbit 3000, 3001, 3002, 3003; Int32 end_orbit 3000, 3001, 3002, 3003; Int32 start_rgt 25, 26, 27, 28; Int32 end_rgt 25, 26, 27, 28; Int32 start_region 1, 1, 1, 1; Int32 end_region 14, 14, 14, 14; Int32 start_geoseg 28, 5, 4, 7; Int32 end_geoseg 2007128, 2007130, 2007129, 2007125; String fullnamepath "/METADATA/Lineage/ATL09"; } METADATA_Lineage_ANC38_12 { String description "ISO 19139 XML file containing DataSet-level metadata information."; String fileName "ANC38-12_20210107160644_004_01.xml"; String shortName "ANC38-12"; String uuid "44ea6704-3f02-324f-84a3-06e2e889fc59"; String version "004"; String fullnamepath "/METADATA/Lineage/ANC38-12"; } 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_ProcessStep { } METADATA_ProcessStep_Browse { String processDescription "Browse processing is performed for each granule SIPS produces. The browse utility reads data from the granule and produces browse images as defined in the respective product ATBD. The utility then embeds each browse image into the product within the /Browse group."; String identifier "atlas_brw"; String softwareVersion "Version 2.4.1"; String softwareDate "Jan 14 2021"; String softwareTitle "Creates ATLAS HDF5 browse files"; String runTimeParameters "CTL_atlas_l3a_oc_005983079.ctl"; String stepDateTime "2021-02-12T21:55:30.000000Z"; String fullnamepath "/METADATA/ProcessStep/Browse"; } METADATA_ProcessStep_Metadata { String processDescription "Metadata information is processed by the metadata utility for each granule produced by SIPS. During PGE processing, dynamic metadata are written to the product. Additional static information is provided with the metadata template. The metadata utility reads ISO Dataset and Series metadata files and updates the product with static information from within those files. The utility then merges the static and dynamic metadata to creates output ISO19139 Dataset and Series XML files. Finally the utility reads the ISO19139 Dataset and Series XML files into memory and stores the textual representations as attributes attached to the /METADATA group."; String identifier "atlas_meta"; String softwareVersion "Version 4.4.1"; String softwareDate "Jan 14 2021"; String softwareTitle "Creates ATLAS XML metadata files"; String runTimeParameters "CTL_atlas_l3a_oc_005983079.ctl"; String stepDateTime "2021-02-12T21:55:56.000000Z"; String fullnamepath "/METADATA/ProcessStep/Metadata"; } METADATA_ProcessStep_PGE { String ATBDDate "12/20/2019"; String ATBDTitle "Algorithm Theoretical Basis Document (ATBD) for Ocean Surface Height"; String ATBDVersion "N/A"; String documentDate "Feb 2020"; String documentation "ATLAS Science Algorithm Software Design Description (SDD) - Volume 11 (atlas_l3a_oc)"; String processDescription "Computes heights of the ocean surface relative to ellipsoid after adjusted for geoidal and tidal variations, and inverted barometer effects. Includes height statistics and apparent reflectance."; String identifier "atlas_l3a_oc"; String softwareVersion "Version 4.4"; String softwareDate "Oct 29 2020"; String softwareTitle "ASAS L3A Ocean PGE"; String runTimeParameters "CTL_atlas_l3a_oc_005983079.ctl"; String stepDateTime "2021-02-12T13:42:57.000000Z"; 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 "atl12_qa_util"; String softwareVersion "Version 4.4"; String softwareDate "Oct 29 2020"; String softwareTitle "ATL12 QA Utility"; String runTimeParameters "CTL_atlas_l3a_oc_005983079.ctl"; String stepDateTime "2021-02-12T21:54:39.000000Z"; String fullnamepath "/METADATA/ProcessStep/QA"; } gt1r { String Description "This ground contains parameters and subgroups related a specific groundtrack."; String data_rate "Each subgroup identifies its particular data rate."; String atlas_pce "pce1"; String atlas_beam_type "weak"; String groundtrack_id "gt1r"; String atmosphere_profile "profile_1"; String atlas_spot_number "2"; String sc_orientation "Backward"; String fullnamepath "/gt1r"; } gt1r_ssh_segments { String Description "Contains parameters relating to the calculated surface height."; String data_rate "Data within this group are stored at the variable ocean processing segment rate."; String fullnamepath "/gt1r/ssh_segments"; } gt1r_ssh_segments_heights { String Description "Contains parameters including and relating to the calculated sea surface height."; String data_rate "Data within this group are stored at the variable ocean processing segment rate."; String fullnamepath "/gt1r/ssh_segments/heights"; } gt1r_ssh_segments_stats { String Description "Contains parameters related to quality and corrections on the sea surface height parameters"; String data_rate "Data within this group are stored at the variable ocean processing segment rate."; String fullnamepath "/gt1r/ssh_segments/stats"; } gt2r { String Description "This ground contains parameters and subgroups related a specific groundtrack."; String data_rate "Each subgroup identifies its particular data rate."; String atlas_pce "pce2"; String atlas_beam_type "weak"; String groundtrack_id "gt2r"; String atmosphere_profile "profile_2"; String atlas_spot_number "4"; String sc_orientation "Backward"; String fullnamepath "/gt2r"; } gt2r_ssh_segments { String Description "Contains parameters relating to the calculated surface height."; String data_rate "Data within this group are stored at the variable ocean processing segment rate."; String fullnamepath "/gt2r/ssh_segments"; } gt2r_ssh_segments_heights { String Description "Contains parameters including and relating to the calculated sea surface height."; String data_rate "Data within this group are stored at the variable ocean processing segment rate."; String fullnamepath "/gt2r/ssh_segments/heights"; } gt2r_ssh_segments_stats { String Description "Contains parameters related to quality and corrections on the sea surface height parameters"; String data_rate "Data within this group are stored at the variable ocean processing segment rate."; String fullnamepath "/gt2r/ssh_segments/stats"; } gt1l { String Description "This ground contains parameters and subgroups related a specific groundtrack."; String data_rate "Each subgroup identifies its particular data rate."; String atlas_pce "pce1"; String atlas_beam_type "strong"; String groundtrack_id "gt1l"; String atmosphere_profile "profile_1"; String atlas_spot_number "1"; String sc_orientation "Backward"; String fullnamepath "/gt1l"; } gt1l_ssh_segments { String Description "Contains parameters relating to the calculated surface height."; String data_rate "Data within this group are stored at the variable ocean processing segment rate."; String fullnamepath "/gt1l/ssh_segments"; } gt1l_ssh_segments_heights { String Description "Contains parameters including and relating to the calculated sea surface height."; String data_rate "Data within this group are stored at the variable ocean processing segment rate."; String fullnamepath "/gt1l/ssh_segments/heights"; } gt1l_ssh_segments_stats { String Description "Contains parameters related to quality and corrections on the sea surface height parameters"; String data_rate "Data within this group are stored at the variable ocean processing segment rate."; String fullnamepath "/gt1l/ssh_segments/stats"; } 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"; } gt3l { String Description "This ground contains parameters and subgroups related a specific groundtrack."; String data_rate "Each subgroup identifies its particular data rate."; String atlas_pce "pce3"; String atlas_beam_type "strong"; String groundtrack_id "gt3l"; String atmosphere_profile "profile_3"; String atlas_spot_number "5"; String sc_orientation "Backward"; String fullnamepath "/gt3l"; } gt3l_ssh_segments { String Description "Contains parameters relating to the calculated surface height."; String data_rate "Data within this group are stored at the variable ocean processing segment rate."; String fullnamepath "/gt3l/ssh_segments"; } gt3l_ssh_segments_heights { String Description "Contains parameters including and relating to the calculated sea surface height."; String data_rate "Data within this group are stored at the variable ocean processing segment rate."; String fullnamepath "/gt3l/ssh_segments/heights"; } gt3l_ssh_segments_stats { String Description "Contains parameters related to quality and corrections on the sea surface height parameters"; String data_rate "Data within this group are stored at the variable ocean processing segment rate."; String fullnamepath "/gt3l/ssh_segments/stats"; } gt2l { String Description "This ground contains parameters and subgroups related a specific groundtrack."; String data_rate "Each subgroup identifies its particular data rate."; String atlas_pce "pce2"; String atlas_beam_type "strong"; String groundtrack_id "gt2l"; String atmosphere_profile "profile_2"; String atlas_spot_number "3"; String sc_orientation "Backward"; String fullnamepath "/gt2l"; } gt2l_ssh_segments { String Description "Contains parameters relating to the calculated surface height."; String data_rate "Data within this group are stored at the variable ocean processing segment rate."; String fullnamepath "/gt2l/ssh_segments"; } gt2l_ssh_segments_heights { String Description "Contains parameters including and relating to the calculated sea surface height."; String data_rate "Data within this group are stored at the variable ocean processing segment rate."; String fullnamepath "/gt2l/ssh_segments/heights"; } gt2l_ssh_segments_stats { String Description "Contains parameters related to quality and corrections on the sea surface height parameters"; String data_rate "Data within this group are stored at the variable ocean processing segment rate."; String fullnamepath "/gt2l/ssh_segments/stats"; } 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_ocean { String Description "Contains general ancillary parameters."; String fullnamepath "/ancillary_data/ocean"; } gt3r { String Description "This ground contains parameters and subgroups related a specific groundtrack."; String data_rate "Each subgroup identifies its particular data rate."; String atlas_pce "pce3"; String atlas_beam_type "weak"; String groundtrack_id "gt3r"; String atmosphere_profile "profile_3"; String atlas_spot_number "6"; String sc_orientation "Backward"; String fullnamepath "/gt3r"; } gt3r_ssh_segments { String Description "Contains parameters relating to the calculated surface height."; String data_rate "Data within this group are stored at the variable ocean processing segment rate."; String fullnamepath "/gt3r/ssh_segments"; } gt3r_ssh_segments_heights { String Description "Contains parameters including and relating to the calculated sea surface height."; String data_rate "Data within this group are stored at the variable ocean processing segment rate."; String fullnamepath "/gt3r/ssh_segments/heights"; } gt3r_ssh_segments_stats { String Description "Contains parameters related to quality and corrections on the sea surface height parameters"; String data_rate "Data within this group are stored at the variable ocean processing segment rate."; String fullnamepath "/gt3r/ssh_segments/stats"; } orbit_info_cycle_number { String long_name "Cycle Number"; String units "1"; Int16 valid_min 0; Int16 valid_max 50; String contentType "referenceInformation"; String description "A count of the number of exact repeats of this reference orbit."; String source "Operations"; String origname "cycle_number"; String fullnamepath "/orbit_info/cycle_number"; String coordinates "orbit_info_crossing_time"; } orbit_info_orbit_number { String long_name "Orbit Number"; String units "1"; UInt16 valid_min 1; UInt16 valid_max 65000; String contentType "referenceInformation"; String description "Unique identifying number for each planned ICESat-2 orbit."; String source "Operations"; String origname "orbit_number"; String fullnamepath "/orbit_info/orbit_number"; String coordinates "orbit_info_crossing_time"; } orbit_info_lan { String long_name "Ascending Node Longitude"; String units "degrees_east"; String source "POD/PPD"; Float64 valid_min -180.00000000000000; Float64 valid_max 180.00000000000000; String contentType "referenceInformation"; String description "Longitude at the ascending node crossing."; String origname "lan"; String fullnamepath "/orbit_info/lan"; String coordinates "orbit_info_crossing_time"; } orbit_info_sc_orient { String long_name "Spacecraft Orientation"; String units "1"; String source "POD/PPD"; Int16 valid_min 0; Int16 valid_max 2; String contentType "referenceInformation"; String description "This parameter tracks the spacecraft orientation between forward, backward and transitional flight modes. ICESat-2 is considered to be flying forward when the weak beams are leading the strong beams; and backward when the strong beams are leading the weak beams. ICESat-2 is considered to be in transition while it is maneuvering between the two orientations. Science quality is potentially degraded while in transition mode."; String flag_meanings "backward forward transition"; Int16 flag_values 0, 1, 2; String origname "sc_orient"; String fullnamepath "/orbit_info/sc_orient"; String coordinates "orbit_info_sc_orient_time"; } orbit_info_rgt { String long_name "Reference Ground track"; String units "1"; String source "POD/PPD"; Int16 valid_min 1; Int16 valid_max 1387; String contentType "referenceInformation"; String description "The reference ground track (RGT) is the track on the earth at which a specified unit vector within the observatory is pointed. Under nominal operating conditions, there will be no data collected along the RGT, as the RGT is spanned by GT3 and GT4. During slews or off-pointing, it is possible that ground tracks may intersect the RGT. The ICESat-2 mission has 1387 RGTs."; String origname "rgt"; String fullnamepath "/orbit_info/rgt"; String coordinates "orbit_info_crossing_time"; } gt1r_ssh_segments_delt_seg { String long_name "Ocean Segment Duration"; String units "seconds"; String source "Ocean ATBD Sect. 5.2.4 step N."; String contentType "referenceInformation"; String description "Time duration segment"; String origname "delt_seg"; String fullnamepath "/gt1r/ssh_segments/delt_seg"; String coordinates "gt1r_ssh_segments_delta_time"; } gt1r_ssh_segments_longitude { String long_name "Mean longitude of surface segment"; String standard_name "longitude"; String units "degrees_east"; String source "Ocean ATBD"; Float64 valid_min -180.00000000000000; Float64 valid_max 180.00000000000000; String contentType "referenceInformation"; String description "Mean longitude of surface photons in segment"; String origname "longitude"; String fullnamepath "/gt1r/ssh_segments/longitude"; String coordinates "gt1r_ssh_segments_delta_time"; } gt1r_ssh_segments_latitude { String long_name "Mean latitude of surface segment"; String standard_name "latitude"; String units "degrees_north"; String source "Ocean ATBD"; Float64 valid_min -90.000000000000000; Float64 valid_max 90.000000000000000; String contentType "referenceInformation"; String description "Mean latitude of surface photons in segment"; String origname "latitude"; String fullnamepath "/gt1r/ssh_segments/latitude"; String coordinates "gt1r_ssh_segments_delta_time"; } gt1r_ssh_segments_heights_mix_mu1 { String long_name "Mean of component 1 Gaussian mixture"; String units "meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Mean of component 1 in 2-component Gaussian mixture"; String origname "mix_mu1"; String fullnamepath "/gt1r/ssh_segments/heights/mix_mu1"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_y { String long_name "PDF of Height"; String units "1/meter"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Probability density function of photon surface height"; String origname "y"; String fullnamepath "/gt1r/ssh_segments/heights/y"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_snr_harm { Float32 _FillValue 3.402823466e+38; String long_name "Harmonic SNR"; String units "meters**2/meters**2"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Signal to noise ratio of harmonic fit with coefficients in a to the surface reflected photons including meanoffit2 and with data gaps greater than gaplimit filled with Gaussian white noise about meanoffit2"; String origname "snr_harm"; String fullnamepath "/gt1r/ssh_segments/heights/snr_harm"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_mix_sig2 { String long_name "Standard deviation of component 2 Gaussian mixture"; String units "meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Standard deviation of component 2 in 2-component Gaussian mixture"; String origname "mix_sig2"; String fullnamepath "/gt1r/ssh_segments/heights/mix_sig2"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_mix_m2 { String long_name "Fraction of component 2 Gaussian mixture"; String units "1"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Fraction of component 2 in 2-component Gaussian mixture"; String origname "mix_m2"; String fullnamepath "/gt1r/ssh_segments/heights/mix_m2"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_bin_ssbias { Float32 _FillValue 3.402823466e+38; String long_name "Sea State Bias"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Mean of linear fit removed from surface photon height (4.3.1)"; String origname "bin_ssbias"; String fullnamepath "/gt1r/ssh_segments/heights/bin_ssbias"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_h_skewness { String long_name "Skewness of sea surface height"; String units "1"; String source "Ocean ATBD Sect. 5.2.6.2 step I, equation 23"; String contentType "referenceInformation"; String description "Skewness of photon sea surface height of the distribution represented as an optimum 2-Gaussian mixture fit to the DOT."; String origname "h_skewness"; String fullnamepath "/gt1r/ssh_segments/heights/h_skewness"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_mix_sig1 { String long_name "Standard deviation of component 1 Gaussian mixture"; String units "meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Standard deviation of component 1 in 2-component Gaussian mixture"; String origname "mix_sig1"; String fullnamepath "/gt1r/ssh_segments/heights/mix_sig1"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_wn { String long_name "Harmonic Wave Numbers"; String units "1/meters"; String source "Ocean ATBD, Section 5.3.3.2 step 1"; String contentType "referenceInformation"; String description "nharms wavenumbers, equal to the inverse of wavelengths for each harmonic component in harmonic analysis of heights."; String origname "wn"; String fullnamepath "/gt1r/ssh_segments/heights/wn"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_n_pulse_seg { String long_name "Number laser pulses segment"; String units "counts"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Number of laser pulses in segment"; String origname "n_pulse_seg"; String fullnamepath "/gt1r/ssh_segments/heights/n_pulse_seg"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_np_effect { Float32 _FillValue 3.402823466e+38; String long_name "Degrees of Freedom"; String units "1"; String source "Ocean ATBD, Section 5.3.6.1 c"; String contentType "referenceInformation"; String description "Effective degrees of freedom of the average sea surface height for the ocean segment"; String origname "np_effect"; String fullnamepath "/gt1r/ssh_segments/heights/np_effect"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_xbind { Float32 _FillValue 3.402823466e+38; String long_name "Average distance for each 10m bin"; String units "meters"; String source "Ocean ATBD"; Float32 valid_min 0.000000000; Float32 valid_max 7100.000000; String contentType "referenceInformation"; String description "Averages of along-track distance in each 10-meter bin"; String origname "xbind"; String fullnamepath "/gt1r/ssh_segments/heights/xbind"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_a { String long_name "Harmonic Coefficients"; String units "meters"; String source "Ocean ATBD, Section 5.3.3.2, step 4"; String contentType "referenceInformation"; String description "Vector of 2 x nharms + 1 coefficients for each harmonic component in the harmonic analysis of heights. a(1,oc_seg) is the coefficient for wavenumber equal zero. a(even index j, oc_seg) is the sine coefficient for wn(j/2), and a(odd index j, oc_seg) is the cosine coefficient for wn((j-1)/2)"; String origname "a"; String fullnamepath "/gt1r/ssh_segments/heights/a"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_length_seg { String long_name "Length of segment"; String units "meters"; String source "Ocean ATBD Sect. 5.2.4 step N."; String contentType "referenceInformation"; String description "Length of segment (m)"; String origname "length_seg"; String fullnamepath "/gt1r/ssh_segments/heights/length_seg"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_p0 { String long_name "Intercept of Linear Fit"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Zero intercept of the linear fit used to detrend the photon heights before going into the second round of surface finding"; String origname "p0"; String fullnamepath "/gt1r/ssh_segments/heights/p0"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_h_kurtosis { String long_name "kurtosis of sea surface height"; String units "1"; String source "Ocean ATBD Sect. 5.2.6.2 step I, equation 24."; String contentType "referenceInformation"; String description "Excess kurtosis of sea surface height of the distribution represented as an optimum 2-Gaussian mixture fit to the DOT."; String origname "h_kurtosis"; String fullnamepath "/gt1r/ssh_segments/heights/h_kurtosis"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_dxbar { Float32 _FillValue 3.402823466e+38; String long_name "Mean Dist Between Signal Photons"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Mean distance between signal photons."; String origname "dxbar"; String fullnamepath "/gt1r/ssh_segments/heights/dxbar"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_yvar { String long_name "yvar"; String units "meter^2"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Variance= second moment of Y calculated as the integral of Y(z) times z squared, all divided by the integral of Y(z)."; String origname "yvar"; String fullnamepath "/gt1r/ssh_segments/heights/yvar"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_h_uncrtn { String long_name "Uncertaintity in mean SSH"; String units "1"; String source "Ocean ATBD, Section 5.3.6.1 c"; String contentType "referenceInformation"; String description "Uncertainty in the mean sea surface height over an ocean segment"; String origname "h_uncrtn"; String fullnamepath "/gt1r/ssh_segments/heights/h_uncrtn"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_h_var { String long_name "Variance of fit"; String units "meters^2"; String source "Ocean ATBD Sect. 5.2.6.2 step I, equation 22."; String contentType "referenceInformation"; String description "Variance in meters squared of the distribution represented as an optimum 2-Gaussian mixture fit to the DOT."; String origname "h_var"; String fullnamepath "/gt1r/ssh_segments/heights/h_var"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_ykurt { String long_name "ykurt"; String units "1"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Excess Kurtosis = (fourth moment of Y)/ Yvar squared, all -3. The fourth moment of Y is calculated as the integral of Y(z) times z to the fourth, all divided by the integral of Y(z)."; String origname "ykurt"; String fullnamepath "/gt1r/ssh_segments/heights/ykurt"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_ymean { String long_name "ymean"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Mean=first moment of Y calculated as the integral of Y(z) times z all divided by the integral of Y(z). This, should be ~0 = h -meanoffit2"; String units "meters"; String origname "ymean"; String fullnamepath "/gt1r/ssh_segments/heights/ymean"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_swh { Float32 _FillValue 3.402823466e+38; String long_name "swh"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Significant wave height estimated as 4 times the standard deviation of along track 10-m bin averaged surface height"; String origname "swh"; String fullnamepath "/gt1r/ssh_segments/heights/swh"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_latbind { Float64 _FillValue 1.7976931348623157e+308; String long_name "Average latitude for each 10m bin"; String units "degrees north"; String source "Ocean ATBD"; Float64 valid_min -90.000000000000000; Float64 valid_max 90.000000000000000; String contentType "referenceInformation"; String description "Averages of latitudes in each 10-meter bin"; String origname "latbind"; String fullnamepath "/gt1r/ssh_segments/heights/latbind"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_xrbin { Float32 _FillValue 3.402823466e+38; String long_name "Average 10m photon rate"; String units "photons/meter"; String source "Ocean ATBD"; Float32 valid_min 0.000000000; Float32 valid_max 500.0000000; String contentType "referenceInformation"; String description "The 10-m bin averaged photon rate from the SSB calculation for each ocean segment."; String origname "xrbin"; String fullnamepath "/gt1r/ssh_segments/heights/xrbin"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_dxskew { Float32 _FillValue 3.402823466e+38; String long_name "Skewness of Dist Between Sig Photons"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Skewness of distance between signal photons."; String origname "dxskew"; String fullnamepath "/gt1r/ssh_segments/heights/dxskew"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_lonbind { Float64 _FillValue 1.7976931348623157e+308; String long_name "Average longitude for each 10m bin"; String units "degrees east"; String source "Ocean ATBD"; Float64 valid_min -180.00000000000000; Float64 valid_max 180.00000000000000; String contentType "referenceInformation"; String description "Averages of longitudes in each 10-meter bin"; String origname "lonbind"; String fullnamepath "/gt1r/ssh_segments/heights/lonbind"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_meanoffit2 { String long_name "coarse Sea surface height of segment"; String units "meters"; String source "Ocean ATBD Sect. 5.2.4 step G"; String contentType "referenceInformation"; String description "Average of the linear fit, P0+P1*X, where P0 and P1 are the coefficients of the linear fit to the initial choice of surface photons and X is the array of along-track positions of the final choice of surface photons"; String origname "meanoffit2"; String fullnamepath "/gt1r/ssh_segments/heights/meanoffit2"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_mix_mu2 { String long_name "Mean of component 2 Gaussian mixture"; String units "meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Mean of component 2 in 2-component Gaussian mixture"; String origname "mix_mu2"; String fullnamepath "/gt1r/ssh_segments/heights/mix_mu2"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_dxvar { Float32 _FillValue 3.402823466e+38; String long_name "Variance of Dist Between Sig Photons"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Variance of distance between signal photons."; String origname "dxvar"; String fullnamepath "/gt1r/ssh_segments/heights/dxvar"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_h { String long_name "mean sea surface height"; String units "meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I, equation 21"; String contentType "referenceInformation"; String description "Mean sea surface height in meters computed as the mean of the distribution represented as an optimum 2-Gaussian mixture fit to the DOT plus the geoid and the mean removed in detrending the surface photon heights for analysis."; String origname "h"; String fullnamepath "/gt1r/ssh_segments/heights/h"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_slope_seg { String long_name "Sea surface slope of segment"; String units "meters/meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I.Sect. 5.2.4 step G"; String contentType "referenceInformation"; String description "Sea surface slope equal to the linear coefficient , P1, of the linear fit used to detrend the photon heights before going into the second round of surface finding."; String origname "slope_seg"; String fullnamepath "/gt1r/ssh_segments/heights/slope_seg"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_p1 { String long_name "Slope of Linear Fit"; String units "meters/meter"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Slope of linear fit versus along-track distance to surface photon height"; String origname "p1"; String fullnamepath "/gt1r/ssh_segments/heights/p1"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_htybin { Float32 _FillValue 3.402823466e+38; String long_name "Average 10m height"; String units "meters"; String source "Ocean ATBD"; Float32 valid_min -16.00000000; Float32 valid_max 16.00000000; String contentType "referenceInformation"; String description "The 10-m bin averaged heights from the SSB calculation for each ocean segment."; String origname "htybin"; String fullnamepath "/gt1r/ssh_segments/heights/htybin"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_mix_m1 { String long_name "Fraction of component 1 Gaussian mixture"; String units "1"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Fraction of component 1 in 2-component Gaussian mixture"; String origname "mix_m1"; String fullnamepath "/gt1r/ssh_segments/heights/mix_m1"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_heights_yskew { String long_name "yskew"; String units "1"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Skewness = (third moment of Y)/ Yvar to the 3/2 power. The third moment of Y is calculated as the integral of Y(z) times z cubed, all divided by the integral of Y(z)."; String origname "yskew"; String fullnamepath "/gt1r/ssh_segments/heights/yskew"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_first_geoseg { String units "1"; String long_name "ATL03 Geolocation Segment"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "The first of the geosegment ids (segment_id) for each ocean segment"; String origname "first_geoseg"; String fullnamepath "/gt1r/ssh_segments/stats/first_geoseg"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_layer_flag_seg { String long_name "Layer Flag"; String units "1"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "The layer flag from ATL09 that is in effect over 50% of the ocean segment, 0 indicating absence of clouds and forward scattering, and 1 indicating possibility of forward scattering as in ATL09"; String origname "layer_flag_seg"; String fullnamepath "/gt1r/ssh_segments/stats/layer_flag_seg"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_tide_pole_seg { Float32 _FillValue 3.402823466e+38; String long_name "Solid Earth Pole Tide"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Solid Earth Pole Tide -Rotational deformation due to polar motion (-1.5 to 1.5 cm)."; String origname "tide_pole_seg"; String fullnamepath "/gt1r/ssh_segments/stats/tide_pole_seg"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_tide_earth_seg { Float32 _FillValue 3.402823466e+38; String long_name "Earth Tide"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of tide free system solid earth tides"; String origname "tide_earth_seg"; String fullnamepath "/gt1r/ssh_segments/stats/tide_earth_seg"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_near_sat_fract_seg { String long_name "Fraction Nearly Saturated"; String units "1"; String source "ATL03"; String contentType "referenceInformation"; String description "Fraction of all pulses in all geosegs used that were nearly saturated"; String origname "near_sat_fract_seg"; String fullnamepath "/gt1r/ssh_segments/stats/near_sat_fract_seg"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_solar_elevation_seg { Float32 _FillValue 3.402823466e+38; String long_name "solar elevation"; String units "degrees"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of the elevation of the sun position vector from the reference photon bounce point position in the local ENU frame. The angle is measured from the East-North plane and is positive towards Up. The average is provided in degrees."; String origname "solar_elevation_seg"; String fullnamepath "/gt1r/ssh_segments/stats/solar_elevation_seg"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_geoid_seg { Float32 _FillValue 3.402823466e+38; String long_name "Geoid (Mean Tide System)"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of mean tide system geoid height above the WGS 84 reference ellipsoid (range -107 to 86 m)."; String origname "geoid_seg"; String fullnamepath "/gt1r/ssh_segments/stats/geoid_seg"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_ss_corr_stdev { Float32 _FillValue 3.402823466e+38; String long_name "ss_corr_stdev"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Estimated error of subsurface scattering correction, placeholder = zero pending further findings to the contrary"; String origname "ss_corr_stdev"; String fullnamepath "/gt1r/ssh_segments/stats/ss_corr_stdev"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_last_pce_mframe_cnt { String long_name "Last PCE Major frame ID"; String units "counts"; String source "l1a/atlas/pcex/altimeter/photons_s and photons_w"; String contentType "referenceInformation"; String description "Last Major Frame ID in the SSH segment"; String origname "last_pce_mframe_cnt"; String fullnamepath "/gt1r/ssh_segments/stats/last_pce_mframe_cnt"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_seg_dist_x_seg { String long_name "Distance along-track"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Ocean segment average of the along-track distance from the equator crossing to the start of the 20-m geolocation segments included in the ocean segment"; String origname "seg_dist_x_seg"; String fullnamepath "/gt1r/ssh_segments/stats/seg_dist_x_seg"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_fpb_corr { Float32 _FillValue 3.402823466e+38; String long_name "first photon bias correction"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Estimated first-photon bias correction to mean segment height = 0 pending findings to the contrary for the ocean"; String origname "fpb_corr"; String fullnamepath "/gt1r/ssh_segments/stats/fpb_corr"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_tide_ocean_seg { Float32 _FillValue 3.402823466e+38; String long_name "Ocean Tide"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of ocean tides including diurnal and semi-diurnal (harmonic analysis) and longer period tides (dynamic and self-consistent equilibrium)"; String origname "tide_ocean_seg"; String fullnamepath "/gt1r/ssh_segments/stats/tide_ocean_seg"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_fpb_corr_stdev { String units "meters"; Float32 _FillValue 3.402823466e+38; String long_name "fpb_corr_stdev"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Estimated error in fpb_corr = 0 pending findings to the contrary"; String origname "fpb_corr_stdev"; String fullnamepath "/gt1r/ssh_segments/stats/fpb_corr_stdev"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_orbit_number { String long_name "Orbit Number"; String units "1"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Unique identifying number for each planned ICESat-2 orbit"; String origname "orbit_number"; String fullnamepath "/gt1r/ssh_segments/stats/orbit_number"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_full_sat_fract_seg { String long_name "Fraction Fully Saturated"; String units "1"; String source "ATL03"; String contentType "referenceInformation"; String description "Fraction of all pulses in all geosegs used that were fully saturated"; String origname "full_sat_fract_seg"; String fullnamepath "/gt1r/ssh_segments/stats/full_sat_fract_seg"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_ref_azimuth_seg { Float32 _FillValue 3.402823466e+38; String long_name "Azimuth"; String standard_name "azimuth"; String units "radians"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of azimuth of the unit pointing vector for the reference photon in the local ENU frame in radians. The angle is measured from North and positive towards East"; String origname "ref_azimuth_seg"; String fullnamepath "/gt1r/ssh_segments/stats/ref_azimuth_seg"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_tide_oc_pole_seg { Float32 _FillValue 3.402823466e+38; String long_name "Ocean Pole Tide"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of oceanic surface rotational deformation due to polar motion (-2 to +2 mm)"; String origname "tide_oc_pole_seg"; String fullnamepath "/gt1r/ssh_segments/stats/tide_oc_pole_seg"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_surf_type_prcnt { String long_name "Percent Surface Type"; String units "1"; String source "ATL03"; String contentType "referenceInformation"; String description "Percent of each surface type (land, ocean, sea ice, land ice, inland water from masks) in the ocean segment"; String origname "surf_type_prcnt"; String fullnamepath "/gt1r/ssh_segments/stats/surf_type_prcnt"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_dac_seg { Float32 _FillValue 3.402823466e+38; String long_name "Dynamic Atmosphere Correction"; String units "meters"; String source "ATL03"; String contentType "referenceInformation"; String description "Ocean segment average of dynamic atmospheric correction (DAC) includes inverted barometer (IB) affect"; String origname "dac_seg"; String fullnamepath "/gt1r/ssh_segments/stats/dac_seg"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_solar_azimuth_seg { Float32 _FillValue 3.402823466e+38; String long_name "solar azimuth"; String units "degrees_east"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of the azimuth of the sun position vector from the reference photon bounce point position in the local ENU frame. The angle is measured from North and is positive towards East. The average is provided in degrees."; String origname "solar_azimuth_seg"; String fullnamepath "/gt1r/ssh_segments/stats/solar_azimuth_seg"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_tide_earth_free2mean_seg { Float32 _FillValue 3.402823466e+38; String long_name "Earth Tide Free-to-Mean conversion"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average additive value to convert solid earth tide from the tide-free system to the mean tide system. (Add to tide_earth to get solid earth tides in the mean-tide system.)"; String origname "tide_earth_free2mean_seg"; String fullnamepath "/gt1r/ssh_segments/stats/tide_earth_free2mean_seg"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_first_pce_mframe_cnt { String units "counts"; String long_name "First PCE Major frame ID"; String source "l1a/atlas/pcex/altimeter/photons_s and photons_w"; String contentType "referenceInformation"; String description "First Major Frame ID in the SSH segment"; String origname "first_pce_mframe_cnt"; String fullnamepath "/gt1r/ssh_segments/stats/first_pce_mframe_cnt"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_last_geoseg { String long_name "ATL03 geolocation segment ID number."; String units "1"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "A 7 digit number identifying the last along-track ATL03 geolocation segment number in the ocean height segment"; String origname "last_geoseg"; String fullnamepath "/gt1r/ssh_segments/stats/last_geoseg"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_geoid_free2mean_seg { Float32 _FillValue 3.402823466e+38; String long_name "Geoid Free-to-Mean conversion"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average additive value to convert geoid heights from the tide-free system to the mean-tide system. (Subtract from geoid_seg to get the geoid heights in the free-tide system.)"; String origname "geoid_free2mean_seg"; String fullnamepath "/gt1r/ssh_segments/stats/geoid_free2mean_seg"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_tide_load_seg { Float32 _FillValue 3.402823466e+38; String long_name "Load Tide"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of local displacement due to ocean loading (-6 to 0 cm)"; String origname "tide_load_seg"; String fullnamepath "/gt1r/ssh_segments/stats/tide_load_seg"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_neutat_delay_total_seg { Float32 _FillValue 3.402823466e+38; String long_name "Total Neutral Atmospheric Delay"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of total neutral atmosphere delay correction (wet + dry)"; String origname "neutat_delay_total_seg"; String fullnamepath "/gt1r/ssh_segments/stats/neutat_delay_total_seg"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_first_tx_pulse { String long_name "First Transmit Pulse"; String units "counts"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "First Transmit pulse in along-track segment"; String origname "first_tx_pulse"; String fullnamepath "/gt1r/ssh_segments/stats/first_tx_pulse"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_tide_equilibrium_seg { String units "meters"; Float32 _FillValue 3.402823466e+38; String long_name "Equilibrium Tide"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Long period equilibrium tide self-consistent with ocean tide model (+-0.04m)."; String origname "tide_equilibrium_seg"; String fullnamepath "/gt1r/ssh_segments/stats/tide_equilibrium_seg"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_cloudcover_percent_seg { String long_name "Percent Cloudcover"; String units "1"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "The percentage of geosegs in the ocean segment with layer_flag=1"; String origname "cloudcover_percent_seg"; String fullnamepath "/gt1r/ssh_segments/stats/cloudcover_percent_seg"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_backgr_seg { Float32 _FillValue 3.402823466e+38; String long_name "ATL03 background"; String units "1/meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "backgrd_atlas/bckgrd_rate from ATL03 averaged over the segment"; String origname "backgr_seg"; String fullnamepath "/gt1r/ssh_segments/stats/backgr_seg"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_ss_corr { Float32 _FillValue 3.402823466e+38; String long_name "subsurface scattering correction"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Subsurface scattering correction, placeholder = zero pending further findings to the contrary"; String origname "ss_corr"; String fullnamepath "/gt1r/ssh_segments/stats/ss_corr"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_last_tx_pulse { String long_name "Last Transmit Pulse"; String units "counts"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Last Transmit pulse in along-track segment"; String origname "last_tx_pulse"; String fullnamepath "/gt1r/ssh_segments/stats/last_tx_pulse"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_photonns_rate { String long_name "Noise photon count rate, averaged over the segment"; String units "1/meters"; String source "Ocean ATBD Sect. 5.2.4 step N.Sect. 5.2.4 step N"; String contentType "referenceInformation"; String description "Noise photon count rate, averaged over the segment"; String origname "photonns_rate"; String fullnamepath "/gt1r/ssh_segments/stats/photonns_rate"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_photon_rate { String long_name "Photon count rate, averaged over the segment"; String units "1/meters"; String source "Ocean ATBD Sect. 5.2.4 step N."; String contentType "referenceInformation"; String description "Photon count rate, averaged over the segment"; String origname "photon_rate"; String fullnamepath "/gt1r/ssh_segments/stats/photon_rate"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_depth_ocn_seg { String long_name "Ocean depth"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "The average of depth_ocn of geo-segments used in the ocean segment"; String units "meters"; String origname "depth_ocn_seg"; String fullnamepath "/gt1r/ssh_segments/stats/depth_ocn_seg"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt1r_ssh_segments_stats_ref_elev_seg { Float32 _FillValue 3.402823466e+38; String long_name "elevation"; String standard_name "elevation"; String units "radians"; String source "ATL03"; String contentType "referenceInformation"; String description "Ocean segment average of elevation of the unit pointing vector for the reference photon in the local ENU frame in radians. The angle is measured from the East-North plane and positive towards Up"; String origname "ref_elev_seg"; String fullnamepath "/gt1r/ssh_segments/stats/ref_elev_seg"; String coordinates "gt1r_ssh_segments_delta_time gt1r_ssh_segments_latitude gt1r_ssh_segments_longitude"; } gt2r_ssh_segments_delt_seg { String long_name "Ocean Segment Duration"; String units "seconds"; String source "Ocean ATBD Sect. 5.2.4 step N."; String contentType "referenceInformation"; String description "Time duration segment"; String origname "delt_seg"; String fullnamepath "/gt2r/ssh_segments/delt_seg"; String coordinates "gt2r_ssh_segments_delta_time"; } gt2r_ssh_segments_longitude { String long_name "Mean longitude of surface segment"; String standard_name "longitude"; String units "degrees_east"; String source "Ocean ATBD"; Float64 valid_min -180.00000000000000; Float64 valid_max 180.00000000000000; String contentType "referenceInformation"; String description "Mean longitude of surface photons in segment"; String origname "longitude"; String fullnamepath "/gt2r/ssh_segments/longitude"; String coordinates "gt2r_ssh_segments_delta_time"; } gt2r_ssh_segments_latitude { String long_name "Mean latitude of surface segment"; String standard_name "latitude"; String units "degrees_north"; String source "Ocean ATBD"; Float64 valid_min -90.000000000000000; Float64 valid_max 90.000000000000000; String contentType "referenceInformation"; String description "Mean latitude of surface photons in segment"; String origname "latitude"; String fullnamepath "/gt2r/ssh_segments/latitude"; String coordinates "gt2r_ssh_segments_delta_time"; } gt2r_ssh_segments_heights_mix_mu1 { String long_name "Mean of component 1 Gaussian mixture"; String units "meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Mean of component 1 in 2-component Gaussian mixture"; String origname "mix_mu1"; String fullnamepath "/gt2r/ssh_segments/heights/mix_mu1"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_y { String long_name "PDF of Height"; String units "1/meter"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Probability density function of photon surface height"; String origname "y"; String fullnamepath "/gt2r/ssh_segments/heights/y"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_snr_harm { Float32 _FillValue 3.402823466e+38; String long_name "Harmonic SNR"; String units "meters**2/meters**2"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Signal to noise ratio of harmonic fit with coefficients in a to the surface reflected photons including meanoffit2 and with data gaps greater than gaplimit filled with Gaussian white noise about meanoffit2"; String origname "snr_harm"; String fullnamepath "/gt2r/ssh_segments/heights/snr_harm"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_mix_sig2 { String long_name "Standard deviation of component 2 Gaussian mixture"; String units "meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Standard deviation of component 2 in 2-component Gaussian mixture"; String origname "mix_sig2"; String fullnamepath "/gt2r/ssh_segments/heights/mix_sig2"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_mix_m2 { String long_name "Fraction of component 2 Gaussian mixture"; String units "1"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Fraction of component 2 in 2-component Gaussian mixture"; String origname "mix_m2"; String fullnamepath "/gt2r/ssh_segments/heights/mix_m2"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_bin_ssbias { Float32 _FillValue 3.402823466e+38; String long_name "Sea State Bias"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Mean of linear fit removed from surface photon height (4.3.1)"; String origname "bin_ssbias"; String fullnamepath "/gt2r/ssh_segments/heights/bin_ssbias"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_h_skewness { String long_name "Skewness of sea surface height"; String units "1"; String source "Ocean ATBD Sect. 5.2.6.2 step I, equation 23"; String contentType "referenceInformation"; String description "Skewness of photon sea surface height of the distribution represented as an optimum 2-Gaussian mixture fit to the DOT."; String origname "h_skewness"; String fullnamepath "/gt2r/ssh_segments/heights/h_skewness"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_mix_sig1 { String long_name "Standard deviation of component 1 Gaussian mixture"; String units "meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Standard deviation of component 1 in 2-component Gaussian mixture"; String origname "mix_sig1"; String fullnamepath "/gt2r/ssh_segments/heights/mix_sig1"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_wn { String long_name "Harmonic Wave Numbers"; String units "1/meters"; String source "Ocean ATBD, Section 5.3.3.2 step 1"; String contentType "referenceInformation"; String description "nharms wavenumbers, equal to the inverse of wavelengths for each harmonic component in harmonic analysis of heights."; String origname "wn"; String fullnamepath "/gt2r/ssh_segments/heights/wn"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_n_pulse_seg { String long_name "Number laser pulses segment"; String units "counts"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Number of laser pulses in segment"; String origname "n_pulse_seg"; String fullnamepath "/gt2r/ssh_segments/heights/n_pulse_seg"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_np_effect { Float32 _FillValue 3.402823466e+38; String long_name "Degrees of Freedom"; String units "1"; String source "Ocean ATBD, Section 5.3.6.1 c"; String contentType "referenceInformation"; String description "Effective degrees of freedom of the average sea surface height for the ocean segment"; String origname "np_effect"; String fullnamepath "/gt2r/ssh_segments/heights/np_effect"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_xbind { Float32 _FillValue 3.402823466e+38; String long_name "Average distance for each 10m bin"; String units "meters"; String source "Ocean ATBD"; Float32 valid_min 0.000000000; Float32 valid_max 7100.000000; String contentType "referenceInformation"; String description "Averages of along-track distance in each 10-meter bin"; String origname "xbind"; String fullnamepath "/gt2r/ssh_segments/heights/xbind"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_a { String long_name "Harmonic Coefficients"; String units "meters"; String source "Ocean ATBD, Section 5.3.3.2, step 4"; String contentType "referenceInformation"; String description "Vector of 2 x nharms + 1 coefficients for each harmonic component in the harmonic analysis of heights. a(1,oc_seg) is the coefficient for wavenumber equal zero. a(even index j, oc_seg) is the sine coefficient for wn(j/2), and a(odd index j, oc_seg) is the cosine coefficient for wn((j-1)/2)"; String origname "a"; String fullnamepath "/gt2r/ssh_segments/heights/a"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_length_seg { String long_name "Length of segment"; String units "meters"; String source "Ocean ATBD Sect. 5.2.4 step N."; String contentType "referenceInformation"; String description "Length of segment (m)"; String origname "length_seg"; String fullnamepath "/gt2r/ssh_segments/heights/length_seg"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_p0 { String long_name "Intercept of Linear Fit"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Zero intercept of the linear fit used to detrend the photon heights before going into the second round of surface finding"; String origname "p0"; String fullnamepath "/gt2r/ssh_segments/heights/p0"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_h_kurtosis { String long_name "kurtosis of sea surface height"; String units "1"; String source "Ocean ATBD Sect. 5.2.6.2 step I, equation 24."; String contentType "referenceInformation"; String description "Excess kurtosis of sea surface height of the distribution represented as an optimum 2-Gaussian mixture fit to the DOT."; String origname "h_kurtosis"; String fullnamepath "/gt2r/ssh_segments/heights/h_kurtosis"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_dxbar { Float32 _FillValue 3.402823466e+38; String long_name "Mean Dist Between Signal Photons"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Mean distance between signal photons."; String origname "dxbar"; String fullnamepath "/gt2r/ssh_segments/heights/dxbar"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_yvar { String long_name "yvar"; String units "meter^2"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Variance= second moment of Y calculated as the integral of Y(z) times z squared, all divided by the integral of Y(z)."; String origname "yvar"; String fullnamepath "/gt2r/ssh_segments/heights/yvar"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_h_uncrtn { String long_name "Uncertaintity in mean SSH"; String units "1"; String source "Ocean ATBD, Section 5.3.6.1 c"; String contentType "referenceInformation"; String description "Uncertainty in the mean sea surface height over an ocean segment"; String origname "h_uncrtn"; String fullnamepath "/gt2r/ssh_segments/heights/h_uncrtn"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_h_var { String long_name "Variance of fit"; String units "meters^2"; String source "Ocean ATBD Sect. 5.2.6.2 step I, equation 22."; String contentType "referenceInformation"; String description "Variance in meters squared of the distribution represented as an optimum 2-Gaussian mixture fit to the DOT."; String origname "h_var"; String fullnamepath "/gt2r/ssh_segments/heights/h_var"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_ykurt { String long_name "ykurt"; String units "1"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Excess Kurtosis = (fourth moment of Y)/ Yvar squared, all -3. The fourth moment of Y is calculated as the integral of Y(z) times z to the fourth, all divided by the integral of Y(z)."; String origname "ykurt"; String fullnamepath "/gt2r/ssh_segments/heights/ykurt"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_ymean { String long_name "ymean"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Mean=first moment of Y calculated as the integral of Y(z) times z all divided by the integral of Y(z). This, should be ~0 = h -meanoffit2"; String units "meters"; String origname "ymean"; String fullnamepath "/gt2r/ssh_segments/heights/ymean"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_swh { Float32 _FillValue 3.402823466e+38; String long_name "swh"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Significant wave height estimated as 4 times the standard deviation of along track 10-m bin averaged surface height"; String origname "swh"; String fullnamepath "/gt2r/ssh_segments/heights/swh"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_latbind { Float64 _FillValue 1.7976931348623157e+308; String long_name "Average latitude for each 10m bin"; String units "degrees north"; String source "Ocean ATBD"; Float64 valid_min -90.000000000000000; Float64 valid_max 90.000000000000000; String contentType "referenceInformation"; String description "Averages of latitudes in each 10-meter bin"; String origname "latbind"; String fullnamepath "/gt2r/ssh_segments/heights/latbind"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_xrbin { Float32 _FillValue 3.402823466e+38; String long_name "Average 10m photon rate"; String units "photons/meter"; String source "Ocean ATBD"; Float32 valid_min 0.000000000; Float32 valid_max 500.0000000; String contentType "referenceInformation"; String description "The 10-m bin averaged photon rate from the SSB calculation for each ocean segment."; String origname "xrbin"; String fullnamepath "/gt2r/ssh_segments/heights/xrbin"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_dxskew { Float32 _FillValue 3.402823466e+38; String long_name "Skewness of Dist Between Sig Photons"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Skewness of distance between signal photons."; String origname "dxskew"; String fullnamepath "/gt2r/ssh_segments/heights/dxskew"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_lonbind { Float64 _FillValue 1.7976931348623157e+308; String long_name "Average longitude for each 10m bin"; String units "degrees east"; String source "Ocean ATBD"; Float64 valid_min -180.00000000000000; Float64 valid_max 180.00000000000000; String contentType "referenceInformation"; String description "Averages of longitudes in each 10-meter bin"; String origname "lonbind"; String fullnamepath "/gt2r/ssh_segments/heights/lonbind"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_meanoffit2 { String long_name "coarse Sea surface height of segment"; String units "meters"; String source "Ocean ATBD Sect. 5.2.4 step G"; String contentType "referenceInformation"; String description "Average of the linear fit, P0+P1*X, where P0 and P1 are the coefficients of the linear fit to the initial choice of surface photons and X is the array of along-track positions of the final choice of surface photons"; String origname "meanoffit2"; String fullnamepath "/gt2r/ssh_segments/heights/meanoffit2"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_mix_mu2 { String long_name "Mean of component 2 Gaussian mixture"; String units "meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Mean of component 2 in 2-component Gaussian mixture"; String origname "mix_mu2"; String fullnamepath "/gt2r/ssh_segments/heights/mix_mu2"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_dxvar { Float32 _FillValue 3.402823466e+38; String long_name "Variance of Dist Between Sig Photons"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Variance of distance between signal photons."; String origname "dxvar"; String fullnamepath "/gt2r/ssh_segments/heights/dxvar"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_h { String long_name "mean sea surface height"; String units "meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I, equation 21"; String contentType "referenceInformation"; String description "Mean sea surface height in meters computed as the mean of the distribution represented as an optimum 2-Gaussian mixture fit to the DOT plus the geoid and the mean removed in detrending the surface photon heights for analysis."; String origname "h"; String fullnamepath "/gt2r/ssh_segments/heights/h"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_slope_seg { String long_name "Sea surface slope of segment"; String units "meters/meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I.Sect. 5.2.4 step G"; String contentType "referenceInformation"; String description "Sea surface slope equal to the linear coefficient , P1, of the linear fit used to detrend the photon heights before going into the second round of surface finding."; String origname "slope_seg"; String fullnamepath "/gt2r/ssh_segments/heights/slope_seg"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_p1 { String long_name "Slope of Linear Fit"; String units "meters/meter"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Slope of linear fit versus along-track distance to surface photon height"; String origname "p1"; String fullnamepath "/gt2r/ssh_segments/heights/p1"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_htybin { Float32 _FillValue 3.402823466e+38; String long_name "Average 10m height"; String units "meters"; String source "Ocean ATBD"; Float32 valid_min -16.00000000; Float32 valid_max 16.00000000; String contentType "referenceInformation"; String description "The 10-m bin averaged heights from the SSB calculation for each ocean segment."; String origname "htybin"; String fullnamepath "/gt2r/ssh_segments/heights/htybin"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_mix_m1 { String long_name "Fraction of component 1 Gaussian mixture"; String units "1"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Fraction of component 1 in 2-component Gaussian mixture"; String origname "mix_m1"; String fullnamepath "/gt2r/ssh_segments/heights/mix_m1"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_heights_yskew { String long_name "yskew"; String units "1"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Skewness = (third moment of Y)/ Yvar to the 3/2 power. The third moment of Y is calculated as the integral of Y(z) times z cubed, all divided by the integral of Y(z)."; String origname "yskew"; String fullnamepath "/gt2r/ssh_segments/heights/yskew"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_first_geoseg { String units "1"; String long_name "ATL03 Geolocation Segment"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "The first of the geosegment ids (segment_id) for each ocean segment"; String origname "first_geoseg"; String fullnamepath "/gt2r/ssh_segments/stats/first_geoseg"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_layer_flag_seg { String long_name "Layer Flag"; String units "1"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "The layer flag from ATL09 that is in effect over 50% of the ocean segment, 0 indicating absence of clouds and forward scattering, and 1 indicating possibility of forward scattering as in ATL09"; String origname "layer_flag_seg"; String fullnamepath "/gt2r/ssh_segments/stats/layer_flag_seg"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_tide_pole_seg { Float32 _FillValue 3.402823466e+38; String long_name "Solid Earth Pole Tide"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Solid Earth Pole Tide -Rotational deformation due to polar motion (-1.5 to 1.5 cm)."; String origname "tide_pole_seg"; String fullnamepath "/gt2r/ssh_segments/stats/tide_pole_seg"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_tide_earth_seg { Float32 _FillValue 3.402823466e+38; String long_name "Earth Tide"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of tide free system solid earth tides"; String origname "tide_earth_seg"; String fullnamepath "/gt2r/ssh_segments/stats/tide_earth_seg"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_near_sat_fract_seg { String long_name "Fraction Nearly Saturated"; String units "1"; String source "ATL03"; String contentType "referenceInformation"; String description "Fraction of all pulses in all geosegs used that were nearly saturated"; String origname "near_sat_fract_seg"; String fullnamepath "/gt2r/ssh_segments/stats/near_sat_fract_seg"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_solar_elevation_seg { Float32 _FillValue 3.402823466e+38; String long_name "solar elevation"; String units "degrees"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of the elevation of the sun position vector from the reference photon bounce point position in the local ENU frame. The angle is measured from the East-North plane and is positive towards Up. The average is provided in degrees."; String origname "solar_elevation_seg"; String fullnamepath "/gt2r/ssh_segments/stats/solar_elevation_seg"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_geoid_seg { Float32 _FillValue 3.402823466e+38; String long_name "Geoid (Mean Tide System)"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of mean tide system geoid height above the WGS 84 reference ellipsoid (range -107 to 86 m)."; String origname "geoid_seg"; String fullnamepath "/gt2r/ssh_segments/stats/geoid_seg"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_ss_corr_stdev { Float32 _FillValue 3.402823466e+38; String long_name "ss_corr_stdev"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Estimated error of subsurface scattering correction, placeholder = zero pending further findings to the contrary"; String origname "ss_corr_stdev"; String fullnamepath "/gt2r/ssh_segments/stats/ss_corr_stdev"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_last_pce_mframe_cnt { String long_name "Last PCE Major frame ID"; String units "counts"; String source "l1a/atlas/pcex/altimeter/photons_s and photons_w"; String contentType "referenceInformation"; String description "Last Major Frame ID in the SSH segment"; String origname "last_pce_mframe_cnt"; String fullnamepath "/gt2r/ssh_segments/stats/last_pce_mframe_cnt"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_seg_dist_x_seg { String long_name "Distance along-track"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Ocean segment average of the along-track distance from the equator crossing to the start of the 20-m geolocation segments included in the ocean segment"; String origname "seg_dist_x_seg"; String fullnamepath "/gt2r/ssh_segments/stats/seg_dist_x_seg"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_fpb_corr { Float32 _FillValue 3.402823466e+38; String long_name "first photon bias correction"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Estimated first-photon bias correction to mean segment height = 0 pending findings to the contrary for the ocean"; String origname "fpb_corr"; String fullnamepath "/gt2r/ssh_segments/stats/fpb_corr"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_tide_ocean_seg { Float32 _FillValue 3.402823466e+38; String long_name "Ocean Tide"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of ocean tides including diurnal and semi-diurnal (harmonic analysis) and longer period tides (dynamic and self-consistent equilibrium)"; String origname "tide_ocean_seg"; String fullnamepath "/gt2r/ssh_segments/stats/tide_ocean_seg"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_fpb_corr_stdev { String units "meters"; Float32 _FillValue 3.402823466e+38; String long_name "fpb_corr_stdev"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Estimated error in fpb_corr = 0 pending findings to the contrary"; String origname "fpb_corr_stdev"; String fullnamepath "/gt2r/ssh_segments/stats/fpb_corr_stdev"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_orbit_number { String long_name "Orbit Number"; String units "1"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Unique identifying number for each planned ICESat-2 orbit"; String origname "orbit_number"; String fullnamepath "/gt2r/ssh_segments/stats/orbit_number"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_full_sat_fract_seg { String long_name "Fraction Fully Saturated"; String units "1"; String source "ATL03"; String contentType "referenceInformation"; String description "Fraction of all pulses in all geosegs used that were fully saturated"; String origname "full_sat_fract_seg"; String fullnamepath "/gt2r/ssh_segments/stats/full_sat_fract_seg"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_ref_azimuth_seg { Float32 _FillValue 3.402823466e+38; String long_name "Azimuth"; String standard_name "azimuth"; String units "radians"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of azimuth of the unit pointing vector for the reference photon in the local ENU frame in radians. The angle is measured from North and positive towards East"; String origname "ref_azimuth_seg"; String fullnamepath "/gt2r/ssh_segments/stats/ref_azimuth_seg"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_tide_oc_pole_seg { Float32 _FillValue 3.402823466e+38; String long_name "Ocean Pole Tide"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of oceanic surface rotational deformation due to polar motion (-2 to +2 mm)"; String origname "tide_oc_pole_seg"; String fullnamepath "/gt2r/ssh_segments/stats/tide_oc_pole_seg"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_surf_type_prcnt { String long_name "Percent Surface Type"; String units "1"; String source "ATL03"; String contentType "referenceInformation"; String description "Percent of each surface type (land, ocean, sea ice, land ice, inland water from masks) in the ocean segment"; String origname "surf_type_prcnt"; String fullnamepath "/gt2r/ssh_segments/stats/surf_type_prcnt"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_dac_seg { Float32 _FillValue 3.402823466e+38; String long_name "Dynamic Atmosphere Correction"; String units "meters"; String source "ATL03"; String contentType "referenceInformation"; String description "Ocean segment average of dynamic atmospheric correction (DAC) includes inverted barometer (IB) affect"; String origname "dac_seg"; String fullnamepath "/gt2r/ssh_segments/stats/dac_seg"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_solar_azimuth_seg { Float32 _FillValue 3.402823466e+38; String long_name "solar azimuth"; String units "degrees_east"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of the azimuth of the sun position vector from the reference photon bounce point position in the local ENU frame. The angle is measured from North and is positive towards East. The average is provided in degrees."; String origname "solar_azimuth_seg"; String fullnamepath "/gt2r/ssh_segments/stats/solar_azimuth_seg"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_tide_earth_free2mean_seg { Float32 _FillValue 3.402823466e+38; String long_name "Earth Tide Free-to-Mean conversion"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average additive value to convert solid earth tide from the tide-free system to the mean tide system. (Add to tide_earth to get solid earth tides in the mean-tide system.)"; String origname "tide_earth_free2mean_seg"; String fullnamepath "/gt2r/ssh_segments/stats/tide_earth_free2mean_seg"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_first_pce_mframe_cnt { String units "counts"; String long_name "First PCE Major frame ID"; String source "l1a/atlas/pcex/altimeter/photons_s and photons_w"; String contentType "referenceInformation"; String description "First Major Frame ID in the SSH segment"; String origname "first_pce_mframe_cnt"; String fullnamepath "/gt2r/ssh_segments/stats/first_pce_mframe_cnt"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_last_geoseg { String long_name "ATL03 geolocation segment ID number."; String units "1"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "A 7 digit number identifying the last along-track ATL03 geolocation segment number in the ocean height segment"; String origname "last_geoseg"; String fullnamepath "/gt2r/ssh_segments/stats/last_geoseg"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_geoid_free2mean_seg { Float32 _FillValue 3.402823466e+38; String long_name "Geoid Free-to-Mean conversion"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average additive value to convert geoid heights from the tide-free system to the mean-tide system. (Subtract from geoid_seg to get the geoid heights in the free-tide system.)"; String origname "geoid_free2mean_seg"; String fullnamepath "/gt2r/ssh_segments/stats/geoid_free2mean_seg"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_tide_load_seg { Float32 _FillValue 3.402823466e+38; String long_name "Load Tide"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of local displacement due to ocean loading (-6 to 0 cm)"; String origname "tide_load_seg"; String fullnamepath "/gt2r/ssh_segments/stats/tide_load_seg"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_neutat_delay_total_seg { Float32 _FillValue 3.402823466e+38; String long_name "Total Neutral Atmospheric Delay"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of total neutral atmosphere delay correction (wet + dry)"; String origname "neutat_delay_total_seg"; String fullnamepath "/gt2r/ssh_segments/stats/neutat_delay_total_seg"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_first_tx_pulse { String long_name "First Transmit Pulse"; String units "counts"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "First Transmit pulse in along-track segment"; String origname "first_tx_pulse"; String fullnamepath "/gt2r/ssh_segments/stats/first_tx_pulse"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_tide_equilibrium_seg { String units "meters"; Float32 _FillValue 3.402823466e+38; String long_name "Equilibrium Tide"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Long period equilibrium tide self-consistent with ocean tide model (+-0.04m)."; String origname "tide_equilibrium_seg"; String fullnamepath "/gt2r/ssh_segments/stats/tide_equilibrium_seg"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_cloudcover_percent_seg { String long_name "Percent Cloudcover"; String units "1"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "The percentage of geosegs in the ocean segment with layer_flag=1"; String origname "cloudcover_percent_seg"; String fullnamepath "/gt2r/ssh_segments/stats/cloudcover_percent_seg"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_backgr_seg { Float32 _FillValue 3.402823466e+38; String long_name "ATL03 background"; String units "1/meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "backgrd_atlas/bckgrd_rate from ATL03 averaged over the segment"; String origname "backgr_seg"; String fullnamepath "/gt2r/ssh_segments/stats/backgr_seg"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_ss_corr { Float32 _FillValue 3.402823466e+38; String long_name "subsurface scattering correction"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Subsurface scattering correction, placeholder = zero pending further findings to the contrary"; String origname "ss_corr"; String fullnamepath "/gt2r/ssh_segments/stats/ss_corr"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_last_tx_pulse { String long_name "Last Transmit Pulse"; String units "counts"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Last Transmit pulse in along-track segment"; String origname "last_tx_pulse"; String fullnamepath "/gt2r/ssh_segments/stats/last_tx_pulse"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_photonns_rate { String long_name "Noise photon count rate, averaged over the segment"; String units "1/meters"; String source "Ocean ATBD Sect. 5.2.4 step N.Sect. 5.2.4 step N"; String contentType "referenceInformation"; String description "Noise photon count rate, averaged over the segment"; String origname "photonns_rate"; String fullnamepath "/gt2r/ssh_segments/stats/photonns_rate"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_photon_rate { String long_name "Photon count rate, averaged over the segment"; String units "1/meters"; String source "Ocean ATBD Sect. 5.2.4 step N."; String contentType "referenceInformation"; String description "Photon count rate, averaged over the segment"; String origname "photon_rate"; String fullnamepath "/gt2r/ssh_segments/stats/photon_rate"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_depth_ocn_seg { String long_name "Ocean depth"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "The average of depth_ocn of geo-segments used in the ocean segment"; String units "meters"; String origname "depth_ocn_seg"; String fullnamepath "/gt2r/ssh_segments/stats/depth_ocn_seg"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt2r_ssh_segments_stats_ref_elev_seg { Float32 _FillValue 3.402823466e+38; String long_name "elevation"; String standard_name "elevation"; String units "radians"; String source "ATL03"; String contentType "referenceInformation"; String description "Ocean segment average of elevation of the unit pointing vector for the reference photon in the local ENU frame in radians. The angle is measured from the East-North plane and positive towards Up"; String origname "ref_elev_seg"; String fullnamepath "/gt2r/ssh_segments/stats/ref_elev_seg"; String coordinates "gt2r_ssh_segments_delta_time gt2r_ssh_segments_latitude gt2r_ssh_segments_longitude"; } gt1l_ssh_segments_delt_seg { String long_name "Ocean Segment Duration"; String units "seconds"; String source "Ocean ATBD Sect. 5.2.4 step N."; String contentType "referenceInformation"; String description "Time duration segment"; String origname "delt_seg"; String fullnamepath "/gt1l/ssh_segments/delt_seg"; String coordinates "gt1l_ssh_segments_delta_time"; } gt1l_ssh_segments_longitude { String long_name "Mean longitude of surface segment"; String standard_name "longitude"; String units "degrees_east"; String source "Ocean ATBD"; Float64 valid_min -180.00000000000000; Float64 valid_max 180.00000000000000; String contentType "referenceInformation"; String description "Mean longitude of surface photons in segment"; String origname "longitude"; String fullnamepath "/gt1l/ssh_segments/longitude"; String coordinates "gt1l_ssh_segments_delta_time"; } gt1l_ssh_segments_latitude { String long_name "Mean latitude of surface segment"; String standard_name "latitude"; String units "degrees_north"; String source "Ocean ATBD"; Float64 valid_min -90.000000000000000; Float64 valid_max 90.000000000000000; String contentType "referenceInformation"; String description "Mean latitude of surface photons in segment"; String origname "latitude"; String fullnamepath "/gt1l/ssh_segments/latitude"; String coordinates "gt1l_ssh_segments_delta_time"; } gt1l_ssh_segments_heights_mix_mu1 { String long_name "Mean of component 1 Gaussian mixture"; String units "meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Mean of component 1 in 2-component Gaussian mixture"; String origname "mix_mu1"; String fullnamepath "/gt1l/ssh_segments/heights/mix_mu1"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_y { String long_name "PDF of Height"; String units "1/meter"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Probability density function of photon surface height"; String origname "y"; String fullnamepath "/gt1l/ssh_segments/heights/y"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_snr_harm { Float32 _FillValue 3.402823466e+38; String long_name "Harmonic SNR"; String units "meters**2/meters**2"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Signal to noise ratio of harmonic fit with coefficients in a to the surface reflected photons including meanoffit2 and with data gaps greater than gaplimit filled with Gaussian white noise about meanoffit2"; String origname "snr_harm"; String fullnamepath "/gt1l/ssh_segments/heights/snr_harm"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_mix_sig2 { String long_name "Standard deviation of component 2 Gaussian mixture"; String units "meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Standard deviation of component 2 in 2-component Gaussian mixture"; String origname "mix_sig2"; String fullnamepath "/gt1l/ssh_segments/heights/mix_sig2"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_mix_m2 { String long_name "Fraction of component 2 Gaussian mixture"; String units "1"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Fraction of component 2 in 2-component Gaussian mixture"; String origname "mix_m2"; String fullnamepath "/gt1l/ssh_segments/heights/mix_m2"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_bin_ssbias { Float32 _FillValue 3.402823466e+38; String long_name "Sea State Bias"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Mean of linear fit removed from surface photon height (4.3.1)"; String origname "bin_ssbias"; String fullnamepath "/gt1l/ssh_segments/heights/bin_ssbias"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_h_skewness { String long_name "Skewness of sea surface height"; String units "1"; String source "Ocean ATBD Sect. 5.2.6.2 step I, equation 23"; String contentType "referenceInformation"; String description "Skewness of photon sea surface height of the distribution represented as an optimum 2-Gaussian mixture fit to the DOT."; String origname "h_skewness"; String fullnamepath "/gt1l/ssh_segments/heights/h_skewness"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_mix_sig1 { String long_name "Standard deviation of component 1 Gaussian mixture"; String units "meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Standard deviation of component 1 in 2-component Gaussian mixture"; String origname "mix_sig1"; String fullnamepath "/gt1l/ssh_segments/heights/mix_sig1"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_wn { String long_name "Harmonic Wave Numbers"; String units "1/meters"; String source "Ocean ATBD, Section 5.3.3.2 step 1"; String contentType "referenceInformation"; String description "nharms wavenumbers, equal to the inverse of wavelengths for each harmonic component in harmonic analysis of heights."; String origname "wn"; String fullnamepath "/gt1l/ssh_segments/heights/wn"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_n_pulse_seg { String long_name "Number laser pulses segment"; String units "counts"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Number of laser pulses in segment"; String origname "n_pulse_seg"; String fullnamepath "/gt1l/ssh_segments/heights/n_pulse_seg"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_np_effect { Float32 _FillValue 3.402823466e+38; String long_name "Degrees of Freedom"; String units "1"; String source "Ocean ATBD, Section 5.3.6.1 c"; String contentType "referenceInformation"; String description "Effective degrees of freedom of the average sea surface height for the ocean segment"; String origname "np_effect"; String fullnamepath "/gt1l/ssh_segments/heights/np_effect"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_xbind { Float32 _FillValue 3.402823466e+38; String long_name "Average distance for each 10m bin"; String units "meters"; String source "Ocean ATBD"; Float32 valid_min 0.000000000; Float32 valid_max 7100.000000; String contentType "referenceInformation"; String description "Averages of along-track distance in each 10-meter bin"; String origname "xbind"; String fullnamepath "/gt1l/ssh_segments/heights/xbind"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_a { String long_name "Harmonic Coefficients"; String units "meters"; String source "Ocean ATBD, Section 5.3.3.2, step 4"; String contentType "referenceInformation"; String description "Vector of 2 x nharms + 1 coefficients for each harmonic component in the harmonic analysis of heights. a(1,oc_seg) is the coefficient for wavenumber equal zero. a(even index j, oc_seg) is the sine coefficient for wn(j/2), and a(odd index j, oc_seg) is the cosine coefficient for wn((j-1)/2)"; String origname "a"; String fullnamepath "/gt1l/ssh_segments/heights/a"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_length_seg { String long_name "Length of segment"; String units "meters"; String source "Ocean ATBD Sect. 5.2.4 step N."; String contentType "referenceInformation"; String description "Length of segment (m)"; String origname "length_seg"; String fullnamepath "/gt1l/ssh_segments/heights/length_seg"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_p0 { String long_name "Intercept of Linear Fit"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Zero intercept of the linear fit used to detrend the photon heights before going into the second round of surface finding"; String origname "p0"; String fullnamepath "/gt1l/ssh_segments/heights/p0"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_h_kurtosis { String long_name "kurtosis of sea surface height"; String units "1"; String source "Ocean ATBD Sect. 5.2.6.2 step I, equation 24."; String contentType "referenceInformation"; String description "Excess kurtosis of sea surface height of the distribution represented as an optimum 2-Gaussian mixture fit to the DOT."; String origname "h_kurtosis"; String fullnamepath "/gt1l/ssh_segments/heights/h_kurtosis"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_dxbar { Float32 _FillValue 3.402823466e+38; String long_name "Mean Dist Between Signal Photons"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Mean distance between signal photons."; String origname "dxbar"; String fullnamepath "/gt1l/ssh_segments/heights/dxbar"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_yvar { String long_name "yvar"; String units "meter^2"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Variance= second moment of Y calculated as the integral of Y(z) times z squared, all divided by the integral of Y(z)."; String origname "yvar"; String fullnamepath "/gt1l/ssh_segments/heights/yvar"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_h_uncrtn { String long_name "Uncertaintity in mean SSH"; String units "1"; String source "Ocean ATBD, Section 5.3.6.1 c"; String contentType "referenceInformation"; String description "Uncertainty in the mean sea surface height over an ocean segment"; String origname "h_uncrtn"; String fullnamepath "/gt1l/ssh_segments/heights/h_uncrtn"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_h_var { String long_name "Variance of fit"; String units "meters^2"; String source "Ocean ATBD Sect. 5.2.6.2 step I, equation 22."; String contentType "referenceInformation"; String description "Variance in meters squared of the distribution represented as an optimum 2-Gaussian mixture fit to the DOT."; String origname "h_var"; String fullnamepath "/gt1l/ssh_segments/heights/h_var"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_ykurt { String long_name "ykurt"; String units "1"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Excess Kurtosis = (fourth moment of Y)/ Yvar squared, all -3. The fourth moment of Y is calculated as the integral of Y(z) times z to the fourth, all divided by the integral of Y(z)."; String origname "ykurt"; String fullnamepath "/gt1l/ssh_segments/heights/ykurt"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_ymean { String long_name "ymean"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Mean=first moment of Y calculated as the integral of Y(z) times z all divided by the integral of Y(z). This, should be ~0 = h -meanoffit2"; String units "meters"; String origname "ymean"; String fullnamepath "/gt1l/ssh_segments/heights/ymean"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_swh { Float32 _FillValue 3.402823466e+38; String long_name "swh"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Significant wave height estimated as 4 times the standard deviation of along track 10-m bin averaged surface height"; String origname "swh"; String fullnamepath "/gt1l/ssh_segments/heights/swh"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_latbind { Float64 _FillValue 1.7976931348623157e+308; String long_name "Average latitude for each 10m bin"; String units "degrees north"; String source "Ocean ATBD"; Float64 valid_min -90.000000000000000; Float64 valid_max 90.000000000000000; String contentType "referenceInformation"; String description "Averages of latitudes in each 10-meter bin"; String origname "latbind"; String fullnamepath "/gt1l/ssh_segments/heights/latbind"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_xrbin { Float32 _FillValue 3.402823466e+38; String long_name "Average 10m photon rate"; String units "photons/meter"; String source "Ocean ATBD"; Float32 valid_min 0.000000000; Float32 valid_max 500.0000000; String contentType "referenceInformation"; String description "The 10-m bin averaged photon rate from the SSB calculation for each ocean segment."; String origname "xrbin"; String fullnamepath "/gt1l/ssh_segments/heights/xrbin"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_dxskew { Float32 _FillValue 3.402823466e+38; String long_name "Skewness of Dist Between Sig Photons"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Skewness of distance between signal photons."; String origname "dxskew"; String fullnamepath "/gt1l/ssh_segments/heights/dxskew"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_lonbind { Float64 _FillValue 1.7976931348623157e+308; String long_name "Average longitude for each 10m bin"; String units "degrees east"; String source "Ocean ATBD"; Float64 valid_min -180.00000000000000; Float64 valid_max 180.00000000000000; String contentType "referenceInformation"; String description "Averages of longitudes in each 10-meter bin"; String origname "lonbind"; String fullnamepath "/gt1l/ssh_segments/heights/lonbind"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_meanoffit2 { String long_name "coarse Sea surface height of segment"; String units "meters"; String source "Ocean ATBD Sect. 5.2.4 step G"; String contentType "referenceInformation"; String description "Average of the linear fit, P0+P1*X, where P0 and P1 are the coefficients of the linear fit to the initial choice of surface photons and X is the array of along-track positions of the final choice of surface photons"; String origname "meanoffit2"; String fullnamepath "/gt1l/ssh_segments/heights/meanoffit2"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_mix_mu2 { String long_name "Mean of component 2 Gaussian mixture"; String units "meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Mean of component 2 in 2-component Gaussian mixture"; String origname "mix_mu2"; String fullnamepath "/gt1l/ssh_segments/heights/mix_mu2"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_dxvar { Float32 _FillValue 3.402823466e+38; String long_name "Variance of Dist Between Sig Photons"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Variance of distance between signal photons."; String origname "dxvar"; String fullnamepath "/gt1l/ssh_segments/heights/dxvar"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_h { String long_name "mean sea surface height"; String units "meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I, equation 21"; String contentType "referenceInformation"; String description "Mean sea surface height in meters computed as the mean of the distribution represented as an optimum 2-Gaussian mixture fit to the DOT plus the geoid and the mean removed in detrending the surface photon heights for analysis."; String origname "h"; String fullnamepath "/gt1l/ssh_segments/heights/h"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_slope_seg { String long_name "Sea surface slope of segment"; String units "meters/meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I.Sect. 5.2.4 step G"; String contentType "referenceInformation"; String description "Sea surface slope equal to the linear coefficient , P1, of the linear fit used to detrend the photon heights before going into the second round of surface finding."; String origname "slope_seg"; String fullnamepath "/gt1l/ssh_segments/heights/slope_seg"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_p1 { String long_name "Slope of Linear Fit"; String units "meters/meter"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Slope of linear fit versus along-track distance to surface photon height"; String origname "p1"; String fullnamepath "/gt1l/ssh_segments/heights/p1"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_htybin { Float32 _FillValue 3.402823466e+38; String long_name "Average 10m height"; String units "meters"; String source "Ocean ATBD"; Float32 valid_min -16.00000000; Float32 valid_max 16.00000000; String contentType "referenceInformation"; String description "The 10-m bin averaged heights from the SSB calculation for each ocean segment."; String origname "htybin"; String fullnamepath "/gt1l/ssh_segments/heights/htybin"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_mix_m1 { String long_name "Fraction of component 1 Gaussian mixture"; String units "1"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Fraction of component 1 in 2-component Gaussian mixture"; String origname "mix_m1"; String fullnamepath "/gt1l/ssh_segments/heights/mix_m1"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_heights_yskew { String long_name "yskew"; String units "1"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Skewness = (third moment of Y)/ Yvar to the 3/2 power. The third moment of Y is calculated as the integral of Y(z) times z cubed, all divided by the integral of Y(z)."; String origname "yskew"; String fullnamepath "/gt1l/ssh_segments/heights/yskew"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_first_geoseg { String units "1"; String long_name "ATL03 Geolocation Segment"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "The first of the geosegment ids (segment_id) for each ocean segment"; String origname "first_geoseg"; String fullnamepath "/gt1l/ssh_segments/stats/first_geoseg"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_layer_flag_seg { String long_name "Layer Flag"; String units "1"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "The layer flag from ATL09 that is in effect over 50% of the ocean segment, 0 indicating absence of clouds and forward scattering, and 1 indicating possibility of forward scattering as in ATL09"; String origname "layer_flag_seg"; String fullnamepath "/gt1l/ssh_segments/stats/layer_flag_seg"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_tide_pole_seg { Float32 _FillValue 3.402823466e+38; String long_name "Solid Earth Pole Tide"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Solid Earth Pole Tide -Rotational deformation due to polar motion (-1.5 to 1.5 cm)."; String origname "tide_pole_seg"; String fullnamepath "/gt1l/ssh_segments/stats/tide_pole_seg"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_tide_earth_seg { Float32 _FillValue 3.402823466e+38; String long_name "Earth Tide"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of tide free system solid earth tides"; String origname "tide_earth_seg"; String fullnamepath "/gt1l/ssh_segments/stats/tide_earth_seg"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_near_sat_fract_seg { String long_name "Fraction Nearly Saturated"; String units "1"; String source "ATL03"; String contentType "referenceInformation"; String description "Fraction of all pulses in all geosegs used that were nearly saturated"; String origname "near_sat_fract_seg"; String fullnamepath "/gt1l/ssh_segments/stats/near_sat_fract_seg"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_solar_elevation_seg { Float32 _FillValue 3.402823466e+38; String long_name "solar elevation"; String units "degrees"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of the elevation of the sun position vector from the reference photon bounce point position in the local ENU frame. The angle is measured from the East-North plane and is positive towards Up. The average is provided in degrees."; String origname "solar_elevation_seg"; String fullnamepath "/gt1l/ssh_segments/stats/solar_elevation_seg"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_geoid_seg { Float32 _FillValue 3.402823466e+38; String long_name "Geoid (Mean Tide System)"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of mean tide system geoid height above the WGS 84 reference ellipsoid (range -107 to 86 m)."; String origname "geoid_seg"; String fullnamepath "/gt1l/ssh_segments/stats/geoid_seg"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_ss_corr_stdev { Float32 _FillValue 3.402823466e+38; String long_name "ss_corr_stdev"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Estimated error of subsurface scattering correction, placeholder = zero pending further findings to the contrary"; String origname "ss_corr_stdev"; String fullnamepath "/gt1l/ssh_segments/stats/ss_corr_stdev"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_last_pce_mframe_cnt { String long_name "Last PCE Major frame ID"; String units "counts"; String source "l1a/atlas/pcex/altimeter/photons_s and photons_w"; String contentType "referenceInformation"; String description "Last Major Frame ID in the SSH segment"; String origname "last_pce_mframe_cnt"; String fullnamepath "/gt1l/ssh_segments/stats/last_pce_mframe_cnt"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_seg_dist_x_seg { String long_name "Distance along-track"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Ocean segment average of the along-track distance from the equator crossing to the start of the 20-m geolocation segments included in the ocean segment"; String origname "seg_dist_x_seg"; String fullnamepath "/gt1l/ssh_segments/stats/seg_dist_x_seg"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_fpb_corr { Float32 _FillValue 3.402823466e+38; String long_name "first photon bias correction"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Estimated first-photon bias correction to mean segment height = 0 pending findings to the contrary for the ocean"; String origname "fpb_corr"; String fullnamepath "/gt1l/ssh_segments/stats/fpb_corr"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_tide_ocean_seg { Float32 _FillValue 3.402823466e+38; String long_name "Ocean Tide"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of ocean tides including diurnal and semi-diurnal (harmonic analysis) and longer period tides (dynamic and self-consistent equilibrium)"; String origname "tide_ocean_seg"; String fullnamepath "/gt1l/ssh_segments/stats/tide_ocean_seg"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_fpb_corr_stdev { String units "meters"; Float32 _FillValue 3.402823466e+38; String long_name "fpb_corr_stdev"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Estimated error in fpb_corr = 0 pending findings to the contrary"; String origname "fpb_corr_stdev"; String fullnamepath "/gt1l/ssh_segments/stats/fpb_corr_stdev"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_orbit_number { String long_name "Orbit Number"; String units "1"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Unique identifying number for each planned ICESat-2 orbit"; String origname "orbit_number"; String fullnamepath "/gt1l/ssh_segments/stats/orbit_number"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_full_sat_fract_seg { String long_name "Fraction Fully Saturated"; String units "1"; String source "ATL03"; String contentType "referenceInformation"; String description "Fraction of all pulses in all geosegs used that were fully saturated"; String origname "full_sat_fract_seg"; String fullnamepath "/gt1l/ssh_segments/stats/full_sat_fract_seg"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_ref_azimuth_seg { Float32 _FillValue 3.402823466e+38; String long_name "Azimuth"; String standard_name "azimuth"; String units "radians"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of azimuth of the unit pointing vector for the reference photon in the local ENU frame in radians. The angle is measured from North and positive towards East"; String origname "ref_azimuth_seg"; String fullnamepath "/gt1l/ssh_segments/stats/ref_azimuth_seg"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_tide_oc_pole_seg { Float32 _FillValue 3.402823466e+38; String long_name "Ocean Pole Tide"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of oceanic surface rotational deformation due to polar motion (-2 to +2 mm)"; String origname "tide_oc_pole_seg"; String fullnamepath "/gt1l/ssh_segments/stats/tide_oc_pole_seg"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_surf_type_prcnt { String long_name "Percent Surface Type"; String units "1"; String source "ATL03"; String contentType "referenceInformation"; String description "Percent of each surface type (land, ocean, sea ice, land ice, inland water from masks) in the ocean segment"; String origname "surf_type_prcnt"; String fullnamepath "/gt1l/ssh_segments/stats/surf_type_prcnt"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_dac_seg { Float32 _FillValue 3.402823466e+38; String long_name "Dynamic Atmosphere Correction"; String units "meters"; String source "ATL03"; String contentType "referenceInformation"; String description "Ocean segment average of dynamic atmospheric correction (DAC) includes inverted barometer (IB) affect"; String origname "dac_seg"; String fullnamepath "/gt1l/ssh_segments/stats/dac_seg"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_solar_azimuth_seg { Float32 _FillValue 3.402823466e+38; String long_name "solar azimuth"; String units "degrees_east"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of the azimuth of the sun position vector from the reference photon bounce point position in the local ENU frame. The angle is measured from North and is positive towards East. The average is provided in degrees."; String origname "solar_azimuth_seg"; String fullnamepath "/gt1l/ssh_segments/stats/solar_azimuth_seg"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_tide_earth_free2mean_seg { Float32 _FillValue 3.402823466e+38; String long_name "Earth Tide Free-to-Mean conversion"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average additive value to convert solid earth tide from the tide-free system to the mean tide system. (Add to tide_earth to get solid earth tides in the mean-tide system.)"; String origname "tide_earth_free2mean_seg"; String fullnamepath "/gt1l/ssh_segments/stats/tide_earth_free2mean_seg"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_first_pce_mframe_cnt { String units "counts"; String long_name "First PCE Major frame ID"; String source "l1a/atlas/pcex/altimeter/photons_s and photons_w"; String contentType "referenceInformation"; String description "First Major Frame ID in the SSH segment"; String origname "first_pce_mframe_cnt"; String fullnamepath "/gt1l/ssh_segments/stats/first_pce_mframe_cnt"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_last_geoseg { String long_name "ATL03 geolocation segment ID number."; String units "1"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "A 7 digit number identifying the last along-track ATL03 geolocation segment number in the ocean height segment"; String origname "last_geoseg"; String fullnamepath "/gt1l/ssh_segments/stats/last_geoseg"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_geoid_free2mean_seg { Float32 _FillValue 3.402823466e+38; String long_name "Geoid Free-to-Mean conversion"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average additive value to convert geoid heights from the tide-free system to the mean-tide system. (Subtract from geoid_seg to get the geoid heights in the free-tide system.)"; String origname "geoid_free2mean_seg"; String fullnamepath "/gt1l/ssh_segments/stats/geoid_free2mean_seg"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_tide_load_seg { Float32 _FillValue 3.402823466e+38; String long_name "Load Tide"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of local displacement due to ocean loading (-6 to 0 cm)"; String origname "tide_load_seg"; String fullnamepath "/gt1l/ssh_segments/stats/tide_load_seg"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_neutat_delay_total_seg { Float32 _FillValue 3.402823466e+38; String long_name "Total Neutral Atmospheric Delay"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of total neutral atmosphere delay correction (wet + dry)"; String origname "neutat_delay_total_seg"; String fullnamepath "/gt1l/ssh_segments/stats/neutat_delay_total_seg"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_first_tx_pulse { String long_name "First Transmit Pulse"; String units "counts"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "First Transmit pulse in along-track segment"; String origname "first_tx_pulse"; String fullnamepath "/gt1l/ssh_segments/stats/first_tx_pulse"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_tide_equilibrium_seg { String units "meters"; Float32 _FillValue 3.402823466e+38; String long_name "Equilibrium Tide"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Long period equilibrium tide self-consistent with ocean tide model (+-0.04m)."; String origname "tide_equilibrium_seg"; String fullnamepath "/gt1l/ssh_segments/stats/tide_equilibrium_seg"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_cloudcover_percent_seg { String long_name "Percent Cloudcover"; String units "1"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "The percentage of geosegs in the ocean segment with layer_flag=1"; String origname "cloudcover_percent_seg"; String fullnamepath "/gt1l/ssh_segments/stats/cloudcover_percent_seg"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_backgr_seg { Float32 _FillValue 3.402823466e+38; String long_name "ATL03 background"; String units "1/meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "backgrd_atlas/bckgrd_rate from ATL03 averaged over the segment"; String origname "backgr_seg"; String fullnamepath "/gt1l/ssh_segments/stats/backgr_seg"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_ss_corr { Float32 _FillValue 3.402823466e+38; String long_name "subsurface scattering correction"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Subsurface scattering correction, placeholder = zero pending further findings to the contrary"; String origname "ss_corr"; String fullnamepath "/gt1l/ssh_segments/stats/ss_corr"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_last_tx_pulse { String long_name "Last Transmit Pulse"; String units "counts"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Last Transmit pulse in along-track segment"; String origname "last_tx_pulse"; String fullnamepath "/gt1l/ssh_segments/stats/last_tx_pulse"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_photonns_rate { String long_name "Noise photon count rate, averaged over the segment"; String units "1/meters"; String source "Ocean ATBD Sect. 5.2.4 step N.Sect. 5.2.4 step N"; String contentType "referenceInformation"; String description "Noise photon count rate, averaged over the segment"; String origname "photonns_rate"; String fullnamepath "/gt1l/ssh_segments/stats/photonns_rate"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_photon_rate { String long_name "Photon count rate, averaged over the segment"; String units "1/meters"; String source "Ocean ATBD Sect. 5.2.4 step N."; String contentType "referenceInformation"; String description "Photon count rate, averaged over the segment"; String origname "photon_rate"; String fullnamepath "/gt1l/ssh_segments/stats/photon_rate"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_depth_ocn_seg { String long_name "Ocean depth"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "The average of depth_ocn of geo-segments used in the ocean segment"; String units "meters"; String origname "depth_ocn_seg"; String fullnamepath "/gt1l/ssh_segments/stats/depth_ocn_seg"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } gt1l_ssh_segments_stats_ref_elev_seg { Float32 _FillValue 3.402823466e+38; String long_name "elevation"; String standard_name "elevation"; String units "radians"; String source "ATL03"; String contentType "referenceInformation"; String description "Ocean segment average of elevation of the unit pointing vector for the reference photon in the local ENU frame in radians. The angle is measured from the East-North plane and positive towards Up"; String origname "ref_elev_seg"; String fullnamepath "/gt1l/ssh_segments/stats/ref_elev_seg"; String coordinates "gt1l_ssh_segments_delta_time gt1l_ssh_segments_latitude gt1l_ssh_segments_longitude"; } quality_assessment_qa_granule_fail_reason { String long_name "Granule Failure Reason"; String units "1"; String source "Operations"; Int32 valid_min 0; Int32 valid_max 5; String contentType "qualityInformation"; String description "Flag indicating granule failure reason. 0=no failure; 1=processing error; 2=Insufficient output data was generated; 3=TBD Failure; 4=TBD_Failure; 5=other failure."; String flag_meanings "no_failure PROCESS_ERROR INSUFFICIENT_OUTPUT failure_3 failure_4 OTHER_FAILURE"; Int32 flag_values 0, 1, 2, 3, 4, 5; String origname "qa_granule_fail_reason"; String fullnamepath "/quality_assessment/qa_granule_fail_reason"; } quality_assessment_qa_granule_pass_fail { String long_name "Granule Pass Flag"; String units "1"; String source "Operations"; Int32 valid_min 0; Int32 valid_max 1; String contentType "qualityInformation"; String description "Flag indicating granule quality. 0=granule passes automatic QA. 1=granule fails automatic QA."; String flag_meanings "PASS FAIL"; Int32 flag_values 0, 1; String origname "qa_granule_pass_fail"; String fullnamepath "/quality_assessment/qa_granule_pass_fail"; } gt3l_ssh_segments_delt_seg { String long_name "Ocean Segment Duration"; String units "seconds"; String source "Ocean ATBD Sect. 5.2.4 step N."; String contentType "referenceInformation"; String description "Time duration segment"; String origname "delt_seg"; String fullnamepath "/gt3l/ssh_segments/delt_seg"; String coordinates "gt3l_ssh_segments_delta_time"; } gt3l_ssh_segments_longitude { String long_name "Mean longitude of surface segment"; String standard_name "longitude"; String units "degrees_east"; String source "Ocean ATBD"; Float64 valid_min -180.00000000000000; Float64 valid_max 180.00000000000000; String contentType "referenceInformation"; String description "Mean longitude of surface photons in segment"; String origname "longitude"; String fullnamepath "/gt3l/ssh_segments/longitude"; String coordinates "gt3l_ssh_segments_delta_time"; } gt3l_ssh_segments_latitude { String long_name "Mean latitude of surface segment"; String standard_name "latitude"; String units "degrees_north"; String source "Ocean ATBD"; Float64 valid_min -90.000000000000000; Float64 valid_max 90.000000000000000; String contentType "referenceInformation"; String description "Mean latitude of surface photons in segment"; String origname "latitude"; String fullnamepath "/gt3l/ssh_segments/latitude"; String coordinates "gt3l_ssh_segments_delta_time"; } gt3l_ssh_segments_heights_mix_mu1 { String long_name "Mean of component 1 Gaussian mixture"; String units "meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Mean of component 1 in 2-component Gaussian mixture"; String origname "mix_mu1"; String fullnamepath "/gt3l/ssh_segments/heights/mix_mu1"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_y { String long_name "PDF of Height"; String units "1/meter"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Probability density function of photon surface height"; String origname "y"; String fullnamepath "/gt3l/ssh_segments/heights/y"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_snr_harm { Float32 _FillValue 3.402823466e+38; String long_name "Harmonic SNR"; String units "meters**2/meters**2"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Signal to noise ratio of harmonic fit with coefficients in a to the surface reflected photons including meanoffit2 and with data gaps greater than gaplimit filled with Gaussian white noise about meanoffit2"; String origname "snr_harm"; String fullnamepath "/gt3l/ssh_segments/heights/snr_harm"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_mix_sig2 { String long_name "Standard deviation of component 2 Gaussian mixture"; String units "meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Standard deviation of component 2 in 2-component Gaussian mixture"; String origname "mix_sig2"; String fullnamepath "/gt3l/ssh_segments/heights/mix_sig2"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_mix_m2 { String long_name "Fraction of component 2 Gaussian mixture"; String units "1"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Fraction of component 2 in 2-component Gaussian mixture"; String origname "mix_m2"; String fullnamepath "/gt3l/ssh_segments/heights/mix_m2"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_bin_ssbias { Float32 _FillValue 3.402823466e+38; String long_name "Sea State Bias"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Mean of linear fit removed from surface photon height (4.3.1)"; String origname "bin_ssbias"; String fullnamepath "/gt3l/ssh_segments/heights/bin_ssbias"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_h_skewness { String long_name "Skewness of sea surface height"; String units "1"; String source "Ocean ATBD Sect. 5.2.6.2 step I, equation 23"; String contentType "referenceInformation"; String description "Skewness of photon sea surface height of the distribution represented as an optimum 2-Gaussian mixture fit to the DOT."; String origname "h_skewness"; String fullnamepath "/gt3l/ssh_segments/heights/h_skewness"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_mix_sig1 { String long_name "Standard deviation of component 1 Gaussian mixture"; String units "meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Standard deviation of component 1 in 2-component Gaussian mixture"; String origname "mix_sig1"; String fullnamepath "/gt3l/ssh_segments/heights/mix_sig1"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_wn { String long_name "Harmonic Wave Numbers"; String units "1/meters"; String source "Ocean ATBD, Section 5.3.3.2 step 1"; String contentType "referenceInformation"; String description "nharms wavenumbers, equal to the inverse of wavelengths for each harmonic component in harmonic analysis of heights."; String origname "wn"; String fullnamepath "/gt3l/ssh_segments/heights/wn"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_n_pulse_seg { String long_name "Number laser pulses segment"; String units "counts"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Number of laser pulses in segment"; String origname "n_pulse_seg"; String fullnamepath "/gt3l/ssh_segments/heights/n_pulse_seg"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_np_effect { Float32 _FillValue 3.402823466e+38; String long_name "Degrees of Freedom"; String units "1"; String source "Ocean ATBD, Section 5.3.6.1 c"; String contentType "referenceInformation"; String description "Effective degrees of freedom of the average sea surface height for the ocean segment"; String origname "np_effect"; String fullnamepath "/gt3l/ssh_segments/heights/np_effect"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_xbind { Float32 _FillValue 3.402823466e+38; String long_name "Average distance for each 10m bin"; String units "meters"; String source "Ocean ATBD"; Float32 valid_min 0.000000000; Float32 valid_max 7100.000000; String contentType "referenceInformation"; String description "Averages of along-track distance in each 10-meter bin"; String origname "xbind"; String fullnamepath "/gt3l/ssh_segments/heights/xbind"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_a { String long_name "Harmonic Coefficients"; String units "meters"; String source "Ocean ATBD, Section 5.3.3.2, step 4"; String contentType "referenceInformation"; String description "Vector of 2 x nharms + 1 coefficients for each harmonic component in the harmonic analysis of heights. a(1,oc_seg) is the coefficient for wavenumber equal zero. a(even index j, oc_seg) is the sine coefficient for wn(j/2), and a(odd index j, oc_seg) is the cosine coefficient for wn((j-1)/2)"; String origname "a"; String fullnamepath "/gt3l/ssh_segments/heights/a"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_length_seg { String long_name "Length of segment"; String units "meters"; String source "Ocean ATBD Sect. 5.2.4 step N."; String contentType "referenceInformation"; String description "Length of segment (m)"; String origname "length_seg"; String fullnamepath "/gt3l/ssh_segments/heights/length_seg"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_p0 { String long_name "Intercept of Linear Fit"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Zero intercept of the linear fit used to detrend the photon heights before going into the second round of surface finding"; String origname "p0"; String fullnamepath "/gt3l/ssh_segments/heights/p0"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_h_kurtosis { String long_name "kurtosis of sea surface height"; String units "1"; String source "Ocean ATBD Sect. 5.2.6.2 step I, equation 24."; String contentType "referenceInformation"; String description "Excess kurtosis of sea surface height of the distribution represented as an optimum 2-Gaussian mixture fit to the DOT."; String origname "h_kurtosis"; String fullnamepath "/gt3l/ssh_segments/heights/h_kurtosis"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_dxbar { Float32 _FillValue 3.402823466e+38; String long_name "Mean Dist Between Signal Photons"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Mean distance between signal photons."; String origname "dxbar"; String fullnamepath "/gt3l/ssh_segments/heights/dxbar"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_yvar { String long_name "yvar"; String units "meter^2"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Variance= second moment of Y calculated as the integral of Y(z) times z squared, all divided by the integral of Y(z)."; String origname "yvar"; String fullnamepath "/gt3l/ssh_segments/heights/yvar"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_h_uncrtn { String long_name "Uncertaintity in mean SSH"; String units "1"; String source "Ocean ATBD, Section 5.3.6.1 c"; String contentType "referenceInformation"; String description "Uncertainty in the mean sea surface height over an ocean segment"; String origname "h_uncrtn"; String fullnamepath "/gt3l/ssh_segments/heights/h_uncrtn"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_h_var { String long_name "Variance of fit"; String units "meters^2"; String source "Ocean ATBD Sect. 5.2.6.2 step I, equation 22."; String contentType "referenceInformation"; String description "Variance in meters squared of the distribution represented as an optimum 2-Gaussian mixture fit to the DOT."; String origname "h_var"; String fullnamepath "/gt3l/ssh_segments/heights/h_var"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_ykurt { String long_name "ykurt"; String units "1"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Excess Kurtosis = (fourth moment of Y)/ Yvar squared, all -3. The fourth moment of Y is calculated as the integral of Y(z) times z to the fourth, all divided by the integral of Y(z)."; String origname "ykurt"; String fullnamepath "/gt3l/ssh_segments/heights/ykurt"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_ymean { String long_name "ymean"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Mean=first moment of Y calculated as the integral of Y(z) times z all divided by the integral of Y(z). This, should be ~0 = h -meanoffit2"; String units "meters"; String origname "ymean"; String fullnamepath "/gt3l/ssh_segments/heights/ymean"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_swh { Float32 _FillValue 3.402823466e+38; String long_name "swh"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Significant wave height estimated as 4 times the standard deviation of along track 10-m bin averaged surface height"; String origname "swh"; String fullnamepath "/gt3l/ssh_segments/heights/swh"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_latbind { Float64 _FillValue 1.7976931348623157e+308; String long_name "Average latitude for each 10m bin"; String units "degrees north"; String source "Ocean ATBD"; Float64 valid_min -90.000000000000000; Float64 valid_max 90.000000000000000; String contentType "referenceInformation"; String description "Averages of latitudes in each 10-meter bin"; String origname "latbind"; String fullnamepath "/gt3l/ssh_segments/heights/latbind"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_xrbin { Float32 _FillValue 3.402823466e+38; String long_name "Average 10m photon rate"; String units "photons/meter"; String source "Ocean ATBD"; Float32 valid_min 0.000000000; Float32 valid_max 500.0000000; String contentType "referenceInformation"; String description "The 10-m bin averaged photon rate from the SSB calculation for each ocean segment."; String origname "xrbin"; String fullnamepath "/gt3l/ssh_segments/heights/xrbin"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_dxskew { Float32 _FillValue 3.402823466e+38; String long_name "Skewness of Dist Between Sig Photons"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Skewness of distance between signal photons."; String origname "dxskew"; String fullnamepath "/gt3l/ssh_segments/heights/dxskew"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_lonbind { Float64 _FillValue 1.7976931348623157e+308; String long_name "Average longitude for each 10m bin"; String units "degrees east"; String source "Ocean ATBD"; Float64 valid_min -180.00000000000000; Float64 valid_max 180.00000000000000; String contentType "referenceInformation"; String description "Averages of longitudes in each 10-meter bin"; String origname "lonbind"; String fullnamepath "/gt3l/ssh_segments/heights/lonbind"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_meanoffit2 { String long_name "coarse Sea surface height of segment"; String units "meters"; String source "Ocean ATBD Sect. 5.2.4 step G"; String contentType "referenceInformation"; String description "Average of the linear fit, P0+P1*X, where P0 and P1 are the coefficients of the linear fit to the initial choice of surface photons and X is the array of along-track positions of the final choice of surface photons"; String origname "meanoffit2"; String fullnamepath "/gt3l/ssh_segments/heights/meanoffit2"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_mix_mu2 { String long_name "Mean of component 2 Gaussian mixture"; String units "meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Mean of component 2 in 2-component Gaussian mixture"; String origname "mix_mu2"; String fullnamepath "/gt3l/ssh_segments/heights/mix_mu2"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_dxvar { Float32 _FillValue 3.402823466e+38; String long_name "Variance of Dist Between Sig Photons"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Variance of distance between signal photons."; String origname "dxvar"; String fullnamepath "/gt3l/ssh_segments/heights/dxvar"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_h { String long_name "mean sea surface height"; String units "meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I, equation 21"; String contentType "referenceInformation"; String description "Mean sea surface height in meters computed as the mean of the distribution represented as an optimum 2-Gaussian mixture fit to the DOT plus the geoid and the mean removed in detrending the surface photon heights for analysis."; String origname "h"; String fullnamepath "/gt3l/ssh_segments/heights/h"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_slope_seg { String long_name "Sea surface slope of segment"; String units "meters/meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I.Sect. 5.2.4 step G"; String contentType "referenceInformation"; String description "Sea surface slope equal to the linear coefficient , P1, of the linear fit used to detrend the photon heights before going into the second round of surface finding."; String origname "slope_seg"; String fullnamepath "/gt3l/ssh_segments/heights/slope_seg"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_p1 { String long_name "Slope of Linear Fit"; String units "meters/meter"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Slope of linear fit versus along-track distance to surface photon height"; String origname "p1"; String fullnamepath "/gt3l/ssh_segments/heights/p1"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_htybin { Float32 _FillValue 3.402823466e+38; String long_name "Average 10m height"; String units "meters"; String source "Ocean ATBD"; Float32 valid_min -16.00000000; Float32 valid_max 16.00000000; String contentType "referenceInformation"; String description "The 10-m bin averaged heights from the SSB calculation for each ocean segment."; String origname "htybin"; String fullnamepath "/gt3l/ssh_segments/heights/htybin"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_mix_m1 { String long_name "Fraction of component 1 Gaussian mixture"; String units "1"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Fraction of component 1 in 2-component Gaussian mixture"; String origname "mix_m1"; String fullnamepath "/gt3l/ssh_segments/heights/mix_m1"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_heights_yskew { String long_name "yskew"; String units "1"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Skewness = (third moment of Y)/ Yvar to the 3/2 power. The third moment of Y is calculated as the integral of Y(z) times z cubed, all divided by the integral of Y(z)."; String origname "yskew"; String fullnamepath "/gt3l/ssh_segments/heights/yskew"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_first_geoseg { String units "1"; String long_name "ATL03 Geolocation Segment"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "The first of the geosegment ids (segment_id) for each ocean segment"; String origname "first_geoseg"; String fullnamepath "/gt3l/ssh_segments/stats/first_geoseg"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_layer_flag_seg { String long_name "Layer Flag"; String units "1"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "The layer flag from ATL09 that is in effect over 50% of the ocean segment, 0 indicating absence of clouds and forward scattering, and 1 indicating possibility of forward scattering as in ATL09"; String origname "layer_flag_seg"; String fullnamepath "/gt3l/ssh_segments/stats/layer_flag_seg"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_tide_pole_seg { Float32 _FillValue 3.402823466e+38; String long_name "Solid Earth Pole Tide"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Solid Earth Pole Tide -Rotational deformation due to polar motion (-1.5 to 1.5 cm)."; String origname "tide_pole_seg"; String fullnamepath "/gt3l/ssh_segments/stats/tide_pole_seg"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_tide_earth_seg { Float32 _FillValue 3.402823466e+38; String long_name "Earth Tide"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of tide free system solid earth tides"; String origname "tide_earth_seg"; String fullnamepath "/gt3l/ssh_segments/stats/tide_earth_seg"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_near_sat_fract_seg { String long_name "Fraction Nearly Saturated"; String units "1"; String source "ATL03"; String contentType "referenceInformation"; String description "Fraction of all pulses in all geosegs used that were nearly saturated"; String origname "near_sat_fract_seg"; String fullnamepath "/gt3l/ssh_segments/stats/near_sat_fract_seg"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_solar_elevation_seg { Float32 _FillValue 3.402823466e+38; String long_name "solar elevation"; String units "degrees"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of the elevation of the sun position vector from the reference photon bounce point position in the local ENU frame. The angle is measured from the East-North plane and is positive towards Up. The average is provided in degrees."; String origname "solar_elevation_seg"; String fullnamepath "/gt3l/ssh_segments/stats/solar_elevation_seg"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_geoid_seg { Float32 _FillValue 3.402823466e+38; String long_name "Geoid (Mean Tide System)"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of mean tide system geoid height above the WGS 84 reference ellipsoid (range -107 to 86 m)."; String origname "geoid_seg"; String fullnamepath "/gt3l/ssh_segments/stats/geoid_seg"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_ss_corr_stdev { Float32 _FillValue 3.402823466e+38; String long_name "ss_corr_stdev"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Estimated error of subsurface scattering correction, placeholder = zero pending further findings to the contrary"; String origname "ss_corr_stdev"; String fullnamepath "/gt3l/ssh_segments/stats/ss_corr_stdev"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_last_pce_mframe_cnt { String long_name "Last PCE Major frame ID"; String units "counts"; String source "l1a/atlas/pcex/altimeter/photons_s and photons_w"; String contentType "referenceInformation"; String description "Last Major Frame ID in the SSH segment"; String origname "last_pce_mframe_cnt"; String fullnamepath "/gt3l/ssh_segments/stats/last_pce_mframe_cnt"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_seg_dist_x_seg { String long_name "Distance along-track"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Ocean segment average of the along-track distance from the equator crossing to the start of the 20-m geolocation segments included in the ocean segment"; String origname "seg_dist_x_seg"; String fullnamepath "/gt3l/ssh_segments/stats/seg_dist_x_seg"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_fpb_corr { Float32 _FillValue 3.402823466e+38; String long_name "first photon bias correction"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Estimated first-photon bias correction to mean segment height = 0 pending findings to the contrary for the ocean"; String origname "fpb_corr"; String fullnamepath "/gt3l/ssh_segments/stats/fpb_corr"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_tide_ocean_seg { Float32 _FillValue 3.402823466e+38; String long_name "Ocean Tide"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of ocean tides including diurnal and semi-diurnal (harmonic analysis) and longer period tides (dynamic and self-consistent equilibrium)"; String origname "tide_ocean_seg"; String fullnamepath "/gt3l/ssh_segments/stats/tide_ocean_seg"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_fpb_corr_stdev { String units "meters"; Float32 _FillValue 3.402823466e+38; String long_name "fpb_corr_stdev"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Estimated error in fpb_corr = 0 pending findings to the contrary"; String origname "fpb_corr_stdev"; String fullnamepath "/gt3l/ssh_segments/stats/fpb_corr_stdev"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_orbit_number { String long_name "Orbit Number"; String units "1"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Unique identifying number for each planned ICESat-2 orbit"; String origname "orbit_number"; String fullnamepath "/gt3l/ssh_segments/stats/orbit_number"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_full_sat_fract_seg { String long_name "Fraction Fully Saturated"; String units "1"; String source "ATL03"; String contentType "referenceInformation"; String description "Fraction of all pulses in all geosegs used that were fully saturated"; String origname "full_sat_fract_seg"; String fullnamepath "/gt3l/ssh_segments/stats/full_sat_fract_seg"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_ref_azimuth_seg { Float32 _FillValue 3.402823466e+38; String long_name "Azimuth"; String standard_name "azimuth"; String units "radians"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of azimuth of the unit pointing vector for the reference photon in the local ENU frame in radians. The angle is measured from North and positive towards East"; String origname "ref_azimuth_seg"; String fullnamepath "/gt3l/ssh_segments/stats/ref_azimuth_seg"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_tide_oc_pole_seg { Float32 _FillValue 3.402823466e+38; String long_name "Ocean Pole Tide"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of oceanic surface rotational deformation due to polar motion (-2 to +2 mm)"; String origname "tide_oc_pole_seg"; String fullnamepath "/gt3l/ssh_segments/stats/tide_oc_pole_seg"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_surf_type_prcnt { String long_name "Percent Surface Type"; String units "1"; String source "ATL03"; String contentType "referenceInformation"; String description "Percent of each surface type (land, ocean, sea ice, land ice, inland water from masks) in the ocean segment"; String origname "surf_type_prcnt"; String fullnamepath "/gt3l/ssh_segments/stats/surf_type_prcnt"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_dac_seg { Float32 _FillValue 3.402823466e+38; String long_name "Dynamic Atmosphere Correction"; String units "meters"; String source "ATL03"; String contentType "referenceInformation"; String description "Ocean segment average of dynamic atmospheric correction (DAC) includes inverted barometer (IB) affect"; String origname "dac_seg"; String fullnamepath "/gt3l/ssh_segments/stats/dac_seg"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_solar_azimuth_seg { Float32 _FillValue 3.402823466e+38; String long_name "solar azimuth"; String units "degrees_east"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of the azimuth of the sun position vector from the reference photon bounce point position in the local ENU frame. The angle is measured from North and is positive towards East. The average is provided in degrees."; String origname "solar_azimuth_seg"; String fullnamepath "/gt3l/ssh_segments/stats/solar_azimuth_seg"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_tide_earth_free2mean_seg { Float32 _FillValue 3.402823466e+38; String long_name "Earth Tide Free-to-Mean conversion"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average additive value to convert solid earth tide from the tide-free system to the mean tide system. (Add to tide_earth to get solid earth tides in the mean-tide system.)"; String origname "tide_earth_free2mean_seg"; String fullnamepath "/gt3l/ssh_segments/stats/tide_earth_free2mean_seg"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_first_pce_mframe_cnt { String units "counts"; String long_name "First PCE Major frame ID"; String source "l1a/atlas/pcex/altimeter/photons_s and photons_w"; String contentType "referenceInformation"; String description "First Major Frame ID in the SSH segment"; String origname "first_pce_mframe_cnt"; String fullnamepath "/gt3l/ssh_segments/stats/first_pce_mframe_cnt"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_last_geoseg { String long_name "ATL03 geolocation segment ID number."; String units "1"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "A 7 digit number identifying the last along-track ATL03 geolocation segment number in the ocean height segment"; String origname "last_geoseg"; String fullnamepath "/gt3l/ssh_segments/stats/last_geoseg"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_geoid_free2mean_seg { Float32 _FillValue 3.402823466e+38; String long_name "Geoid Free-to-Mean conversion"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average additive value to convert geoid heights from the tide-free system to the mean-tide system. (Subtract from geoid_seg to get the geoid heights in the free-tide system.)"; String origname "geoid_free2mean_seg"; String fullnamepath "/gt3l/ssh_segments/stats/geoid_free2mean_seg"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_tide_load_seg { Float32 _FillValue 3.402823466e+38; String long_name "Load Tide"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of local displacement due to ocean loading (-6 to 0 cm)"; String origname "tide_load_seg"; String fullnamepath "/gt3l/ssh_segments/stats/tide_load_seg"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_neutat_delay_total_seg { Float32 _FillValue 3.402823466e+38; String long_name "Total Neutral Atmospheric Delay"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of total neutral atmosphere delay correction (wet + dry)"; String origname "neutat_delay_total_seg"; String fullnamepath "/gt3l/ssh_segments/stats/neutat_delay_total_seg"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_first_tx_pulse { String long_name "First Transmit Pulse"; String units "counts"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "First Transmit pulse in along-track segment"; String origname "first_tx_pulse"; String fullnamepath "/gt3l/ssh_segments/stats/first_tx_pulse"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_tide_equilibrium_seg { String units "meters"; Float32 _FillValue 3.402823466e+38; String long_name "Equilibrium Tide"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Long period equilibrium tide self-consistent with ocean tide model (+-0.04m)."; String origname "tide_equilibrium_seg"; String fullnamepath "/gt3l/ssh_segments/stats/tide_equilibrium_seg"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_cloudcover_percent_seg { String long_name "Percent Cloudcover"; String units "1"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "The percentage of geosegs in the ocean segment with layer_flag=1"; String origname "cloudcover_percent_seg"; String fullnamepath "/gt3l/ssh_segments/stats/cloudcover_percent_seg"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_backgr_seg { Float32 _FillValue 3.402823466e+38; String long_name "ATL03 background"; String units "1/meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "backgrd_atlas/bckgrd_rate from ATL03 averaged over the segment"; String origname "backgr_seg"; String fullnamepath "/gt3l/ssh_segments/stats/backgr_seg"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_ss_corr { Float32 _FillValue 3.402823466e+38; String long_name "subsurface scattering correction"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Subsurface scattering correction, placeholder = zero pending further findings to the contrary"; String origname "ss_corr"; String fullnamepath "/gt3l/ssh_segments/stats/ss_corr"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_last_tx_pulse { String long_name "Last Transmit Pulse"; String units "counts"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Last Transmit pulse in along-track segment"; String origname "last_tx_pulse"; String fullnamepath "/gt3l/ssh_segments/stats/last_tx_pulse"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_photonns_rate { String long_name "Noise photon count rate, averaged over the segment"; String units "1/meters"; String source "Ocean ATBD Sect. 5.2.4 step N.Sect. 5.2.4 step N"; String contentType "referenceInformation"; String description "Noise photon count rate, averaged over the segment"; String origname "photonns_rate"; String fullnamepath "/gt3l/ssh_segments/stats/photonns_rate"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_photon_rate { String long_name "Photon count rate, averaged over the segment"; String units "1/meters"; String source "Ocean ATBD Sect. 5.2.4 step N."; String contentType "referenceInformation"; String description "Photon count rate, averaged over the segment"; String origname "photon_rate"; String fullnamepath "/gt3l/ssh_segments/stats/photon_rate"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_depth_ocn_seg { String long_name "Ocean depth"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "The average of depth_ocn of geo-segments used in the ocean segment"; String units "meters"; String origname "depth_ocn_seg"; String fullnamepath "/gt3l/ssh_segments/stats/depth_ocn_seg"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt3l_ssh_segments_stats_ref_elev_seg { Float32 _FillValue 3.402823466e+38; String long_name "elevation"; String standard_name "elevation"; String units "radians"; String source "ATL03"; String contentType "referenceInformation"; String description "Ocean segment average of elevation of the unit pointing vector for the reference photon in the local ENU frame in radians. The angle is measured from the East-North plane and positive towards Up"; String origname "ref_elev_seg"; String fullnamepath "/gt3l/ssh_segments/stats/ref_elev_seg"; String coordinates "gt3l_ssh_segments_delta_time gt3l_ssh_segments_latitude gt3l_ssh_segments_longitude"; } gt2l_ssh_segments_delt_seg { String long_name "Ocean Segment Duration"; String units "seconds"; String source "Ocean ATBD Sect. 5.2.4 step N."; String contentType "referenceInformation"; String description "Time duration segment"; String origname "delt_seg"; String fullnamepath "/gt2l/ssh_segments/delt_seg"; String coordinates "gt2l_ssh_segments_delta_time"; } gt2l_ssh_segments_longitude { String long_name "Mean longitude of surface segment"; String standard_name "longitude"; String units "degrees_east"; String source "Ocean ATBD"; Float64 valid_min -180.00000000000000; Float64 valid_max 180.00000000000000; String contentType "referenceInformation"; String description "Mean longitude of surface photons in segment"; String origname "longitude"; String fullnamepath "/gt2l/ssh_segments/longitude"; String coordinates "gt2l_ssh_segments_delta_time"; } gt2l_ssh_segments_latitude { String long_name "Mean latitude of surface segment"; String standard_name "latitude"; String units "degrees_north"; String source "Ocean ATBD"; Float64 valid_min -90.000000000000000; Float64 valid_max 90.000000000000000; String contentType "referenceInformation"; String description "Mean latitude of surface photons in segment"; String origname "latitude"; String fullnamepath "/gt2l/ssh_segments/latitude"; String coordinates "gt2l_ssh_segments_delta_time"; } gt2l_ssh_segments_heights_mix_mu1 { String long_name "Mean of component 1 Gaussian mixture"; String units "meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Mean of component 1 in 2-component Gaussian mixture"; String origname "mix_mu1"; String fullnamepath "/gt2l/ssh_segments/heights/mix_mu1"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_y { String long_name "PDF of Height"; String units "1/meter"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Probability density function of photon surface height"; String origname "y"; String fullnamepath "/gt2l/ssh_segments/heights/y"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_snr_harm { Float32 _FillValue 3.402823466e+38; String long_name "Harmonic SNR"; String units "meters**2/meters**2"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Signal to noise ratio of harmonic fit with coefficients in a to the surface reflected photons including meanoffit2 and with data gaps greater than gaplimit filled with Gaussian white noise about meanoffit2"; String origname "snr_harm"; String fullnamepath "/gt2l/ssh_segments/heights/snr_harm"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_mix_sig2 { String long_name "Standard deviation of component 2 Gaussian mixture"; String units "meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Standard deviation of component 2 in 2-component Gaussian mixture"; String origname "mix_sig2"; String fullnamepath "/gt2l/ssh_segments/heights/mix_sig2"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_mix_m2 { String long_name "Fraction of component 2 Gaussian mixture"; String units "1"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Fraction of component 2 in 2-component Gaussian mixture"; String origname "mix_m2"; String fullnamepath "/gt2l/ssh_segments/heights/mix_m2"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_bin_ssbias { Float32 _FillValue 3.402823466e+38; String long_name "Sea State Bias"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Mean of linear fit removed from surface photon height (4.3.1)"; String origname "bin_ssbias"; String fullnamepath "/gt2l/ssh_segments/heights/bin_ssbias"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_h_skewness { String long_name "Skewness of sea surface height"; String units "1"; String source "Ocean ATBD Sect. 5.2.6.2 step I, equation 23"; String contentType "referenceInformation"; String description "Skewness of photon sea surface height of the distribution represented as an optimum 2-Gaussian mixture fit to the DOT."; String origname "h_skewness"; String fullnamepath "/gt2l/ssh_segments/heights/h_skewness"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_mix_sig1 { String long_name "Standard deviation of component 1 Gaussian mixture"; String units "meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Standard deviation of component 1 in 2-component Gaussian mixture"; String origname "mix_sig1"; String fullnamepath "/gt2l/ssh_segments/heights/mix_sig1"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_wn { String long_name "Harmonic Wave Numbers"; String units "1/meters"; String source "Ocean ATBD, Section 5.3.3.2 step 1"; String contentType "referenceInformation"; String description "nharms wavenumbers, equal to the inverse of wavelengths for each harmonic component in harmonic analysis of heights."; String origname "wn"; String fullnamepath "/gt2l/ssh_segments/heights/wn"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_n_pulse_seg { String long_name "Number laser pulses segment"; String units "counts"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Number of laser pulses in segment"; String origname "n_pulse_seg"; String fullnamepath "/gt2l/ssh_segments/heights/n_pulse_seg"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_np_effect { Float32 _FillValue 3.402823466e+38; String long_name "Degrees of Freedom"; String units "1"; String source "Ocean ATBD, Section 5.3.6.1 c"; String contentType "referenceInformation"; String description "Effective degrees of freedom of the average sea surface height for the ocean segment"; String origname "np_effect"; String fullnamepath "/gt2l/ssh_segments/heights/np_effect"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_xbind { Float32 _FillValue 3.402823466e+38; String long_name "Average distance for each 10m bin"; String units "meters"; String source "Ocean ATBD"; Float32 valid_min 0.000000000; Float32 valid_max 7100.000000; String contentType "referenceInformation"; String description "Averages of along-track distance in each 10-meter bin"; String origname "xbind"; String fullnamepath "/gt2l/ssh_segments/heights/xbind"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_a { String long_name "Harmonic Coefficients"; String units "meters"; String source "Ocean ATBD, Section 5.3.3.2, step 4"; String contentType "referenceInformation"; String description "Vector of 2 x nharms + 1 coefficients for each harmonic component in the harmonic analysis of heights. a(1,oc_seg) is the coefficient for wavenumber equal zero. a(even index j, oc_seg) is the sine coefficient for wn(j/2), and a(odd index j, oc_seg) is the cosine coefficient for wn((j-1)/2)"; String origname "a"; String fullnamepath "/gt2l/ssh_segments/heights/a"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_length_seg { String long_name "Length of segment"; String units "meters"; String source "Ocean ATBD Sect. 5.2.4 step N."; String contentType "referenceInformation"; String description "Length of segment (m)"; String origname "length_seg"; String fullnamepath "/gt2l/ssh_segments/heights/length_seg"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_p0 { String long_name "Intercept of Linear Fit"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Zero intercept of the linear fit used to detrend the photon heights before going into the second round of surface finding"; String origname "p0"; String fullnamepath "/gt2l/ssh_segments/heights/p0"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_h_kurtosis { String long_name "kurtosis of sea surface height"; String units "1"; String source "Ocean ATBD Sect. 5.2.6.2 step I, equation 24."; String contentType "referenceInformation"; String description "Excess kurtosis of sea surface height of the distribution represented as an optimum 2-Gaussian mixture fit to the DOT."; String origname "h_kurtosis"; String fullnamepath "/gt2l/ssh_segments/heights/h_kurtosis"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_dxbar { Float32 _FillValue 3.402823466e+38; String long_name "Mean Dist Between Signal Photons"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Mean distance between signal photons."; String origname "dxbar"; String fullnamepath "/gt2l/ssh_segments/heights/dxbar"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_yvar { String long_name "yvar"; String units "meter^2"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Variance= second moment of Y calculated as the integral of Y(z) times z squared, all divided by the integral of Y(z)."; String origname "yvar"; String fullnamepath "/gt2l/ssh_segments/heights/yvar"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_h_uncrtn { String long_name "Uncertaintity in mean SSH"; String units "1"; String source "Ocean ATBD, Section 5.3.6.1 c"; String contentType "referenceInformation"; String description "Uncertainty in the mean sea surface height over an ocean segment"; String origname "h_uncrtn"; String fullnamepath "/gt2l/ssh_segments/heights/h_uncrtn"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_h_var { String long_name "Variance of fit"; String units "meters^2"; String source "Ocean ATBD Sect. 5.2.6.2 step I, equation 22."; String contentType "referenceInformation"; String description "Variance in meters squared of the distribution represented as an optimum 2-Gaussian mixture fit to the DOT."; String origname "h_var"; String fullnamepath "/gt2l/ssh_segments/heights/h_var"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_ykurt { String long_name "ykurt"; String units "1"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Excess Kurtosis = (fourth moment of Y)/ Yvar squared, all -3. The fourth moment of Y is calculated as the integral of Y(z) times z to the fourth, all divided by the integral of Y(z)."; String origname "ykurt"; String fullnamepath "/gt2l/ssh_segments/heights/ykurt"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_ymean { String long_name "ymean"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Mean=first moment of Y calculated as the integral of Y(z) times z all divided by the integral of Y(z). This, should be ~0 = h -meanoffit2"; String units "meters"; String origname "ymean"; String fullnamepath "/gt2l/ssh_segments/heights/ymean"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_swh { Float32 _FillValue 3.402823466e+38; String long_name "swh"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Significant wave height estimated as 4 times the standard deviation of along track 10-m bin averaged surface height"; String origname "swh"; String fullnamepath "/gt2l/ssh_segments/heights/swh"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_latbind { Float64 _FillValue 1.7976931348623157e+308; String long_name "Average latitude for each 10m bin"; String units "degrees north"; String source "Ocean ATBD"; Float64 valid_min -90.000000000000000; Float64 valid_max 90.000000000000000; String contentType "referenceInformation"; String description "Averages of latitudes in each 10-meter bin"; String origname "latbind"; String fullnamepath "/gt2l/ssh_segments/heights/latbind"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_xrbin { Float32 _FillValue 3.402823466e+38; String long_name "Average 10m photon rate"; String units "photons/meter"; String source "Ocean ATBD"; Float32 valid_min 0.000000000; Float32 valid_max 500.0000000; String contentType "referenceInformation"; String description "The 10-m bin averaged photon rate from the SSB calculation for each ocean segment."; String origname "xrbin"; String fullnamepath "/gt2l/ssh_segments/heights/xrbin"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_dxskew { Float32 _FillValue 3.402823466e+38; String long_name "Skewness of Dist Between Sig Photons"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Skewness of distance between signal photons."; String origname "dxskew"; String fullnamepath "/gt2l/ssh_segments/heights/dxskew"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_lonbind { Float64 _FillValue 1.7976931348623157e+308; String long_name "Average longitude for each 10m bin"; String units "degrees east"; String source "Ocean ATBD"; Float64 valid_min -180.00000000000000; Float64 valid_max 180.00000000000000; String contentType "referenceInformation"; String description "Averages of longitudes in each 10-meter bin"; String origname "lonbind"; String fullnamepath "/gt2l/ssh_segments/heights/lonbind"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_meanoffit2 { String long_name "coarse Sea surface height of segment"; String units "meters"; String source "Ocean ATBD Sect. 5.2.4 step G"; String contentType "referenceInformation"; String description "Average of the linear fit, P0+P1*X, where P0 and P1 are the coefficients of the linear fit to the initial choice of surface photons and X is the array of along-track positions of the final choice of surface photons"; String origname "meanoffit2"; String fullnamepath "/gt2l/ssh_segments/heights/meanoffit2"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_mix_mu2 { String long_name "Mean of component 2 Gaussian mixture"; String units "meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Mean of component 2 in 2-component Gaussian mixture"; String origname "mix_mu2"; String fullnamepath "/gt2l/ssh_segments/heights/mix_mu2"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_dxvar { Float32 _FillValue 3.402823466e+38; String long_name "Variance of Dist Between Sig Photons"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Variance of distance between signal photons."; String origname "dxvar"; String fullnamepath "/gt2l/ssh_segments/heights/dxvar"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_h { String long_name "mean sea surface height"; String units "meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I, equation 21"; String contentType "referenceInformation"; String description "Mean sea surface height in meters computed as the mean of the distribution represented as an optimum 2-Gaussian mixture fit to the DOT plus the geoid and the mean removed in detrending the surface photon heights for analysis."; String origname "h"; String fullnamepath "/gt2l/ssh_segments/heights/h"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_slope_seg { String long_name "Sea surface slope of segment"; String units "meters/meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I.Sect. 5.2.4 step G"; String contentType "referenceInformation"; String description "Sea surface slope equal to the linear coefficient , P1, of the linear fit used to detrend the photon heights before going into the second round of surface finding."; String origname "slope_seg"; String fullnamepath "/gt2l/ssh_segments/heights/slope_seg"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_p1 { String long_name "Slope of Linear Fit"; String units "meters/meter"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Slope of linear fit versus along-track distance to surface photon height"; String origname "p1"; String fullnamepath "/gt2l/ssh_segments/heights/p1"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_htybin { Float32 _FillValue 3.402823466e+38; String long_name "Average 10m height"; String units "meters"; String source "Ocean ATBD"; Float32 valid_min -16.00000000; Float32 valid_max 16.00000000; String contentType "referenceInformation"; String description "The 10-m bin averaged heights from the SSB calculation for each ocean segment."; String origname "htybin"; String fullnamepath "/gt2l/ssh_segments/heights/htybin"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_mix_m1 { String long_name "Fraction of component 1 Gaussian mixture"; String units "1"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Fraction of component 1 in 2-component Gaussian mixture"; String origname "mix_m1"; String fullnamepath "/gt2l/ssh_segments/heights/mix_m1"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_heights_yskew { String long_name "yskew"; String units "1"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Skewness = (third moment of Y)/ Yvar to the 3/2 power. The third moment of Y is calculated as the integral of Y(z) times z cubed, all divided by the integral of Y(z)."; String origname "yskew"; String fullnamepath "/gt2l/ssh_segments/heights/yskew"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_first_geoseg { String units "1"; String long_name "ATL03 Geolocation Segment"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "The first of the geosegment ids (segment_id) for each ocean segment"; String origname "first_geoseg"; String fullnamepath "/gt2l/ssh_segments/stats/first_geoseg"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_layer_flag_seg { String long_name "Layer Flag"; String units "1"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "The layer flag from ATL09 that is in effect over 50% of the ocean segment, 0 indicating absence of clouds and forward scattering, and 1 indicating possibility of forward scattering as in ATL09"; String origname "layer_flag_seg"; String fullnamepath "/gt2l/ssh_segments/stats/layer_flag_seg"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_tide_pole_seg { Float32 _FillValue 3.402823466e+38; String long_name "Solid Earth Pole Tide"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Solid Earth Pole Tide -Rotational deformation due to polar motion (-1.5 to 1.5 cm)."; String origname "tide_pole_seg"; String fullnamepath "/gt2l/ssh_segments/stats/tide_pole_seg"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_tide_earth_seg { Float32 _FillValue 3.402823466e+38; String long_name "Earth Tide"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of tide free system solid earth tides"; String origname "tide_earth_seg"; String fullnamepath "/gt2l/ssh_segments/stats/tide_earth_seg"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_near_sat_fract_seg { String long_name "Fraction Nearly Saturated"; String units "1"; String source "ATL03"; String contentType "referenceInformation"; String description "Fraction of all pulses in all geosegs used that were nearly saturated"; String origname "near_sat_fract_seg"; String fullnamepath "/gt2l/ssh_segments/stats/near_sat_fract_seg"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_solar_elevation_seg { Float32 _FillValue 3.402823466e+38; String long_name "solar elevation"; String units "degrees"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of the elevation of the sun position vector from the reference photon bounce point position in the local ENU frame. The angle is measured from the East-North plane and is positive towards Up. The average is provided in degrees."; String origname "solar_elevation_seg"; String fullnamepath "/gt2l/ssh_segments/stats/solar_elevation_seg"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_geoid_seg { Float32 _FillValue 3.402823466e+38; String long_name "Geoid (Mean Tide System)"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of mean tide system geoid height above the WGS 84 reference ellipsoid (range -107 to 86 m)."; String origname "geoid_seg"; String fullnamepath "/gt2l/ssh_segments/stats/geoid_seg"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_ss_corr_stdev { Float32 _FillValue 3.402823466e+38; String long_name "ss_corr_stdev"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Estimated error of subsurface scattering correction, placeholder = zero pending further findings to the contrary"; String origname "ss_corr_stdev"; String fullnamepath "/gt2l/ssh_segments/stats/ss_corr_stdev"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_last_pce_mframe_cnt { String long_name "Last PCE Major frame ID"; String units "counts"; String source "l1a/atlas/pcex/altimeter/photons_s and photons_w"; String contentType "referenceInformation"; String description "Last Major Frame ID in the SSH segment"; String origname "last_pce_mframe_cnt"; String fullnamepath "/gt2l/ssh_segments/stats/last_pce_mframe_cnt"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_seg_dist_x_seg { String long_name "Distance along-track"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Ocean segment average of the along-track distance from the equator crossing to the start of the 20-m geolocation segments included in the ocean segment"; String origname "seg_dist_x_seg"; String fullnamepath "/gt2l/ssh_segments/stats/seg_dist_x_seg"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_fpb_corr { Float32 _FillValue 3.402823466e+38; String long_name "first photon bias correction"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Estimated first-photon bias correction to mean segment height = 0 pending findings to the contrary for the ocean"; String origname "fpb_corr"; String fullnamepath "/gt2l/ssh_segments/stats/fpb_corr"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_tide_ocean_seg { Float32 _FillValue 3.402823466e+38; String long_name "Ocean Tide"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of ocean tides including diurnal and semi-diurnal (harmonic analysis) and longer period tides (dynamic and self-consistent equilibrium)"; String origname "tide_ocean_seg"; String fullnamepath "/gt2l/ssh_segments/stats/tide_ocean_seg"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_fpb_corr_stdev { String units "meters"; Float32 _FillValue 3.402823466e+38; String long_name "fpb_corr_stdev"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Estimated error in fpb_corr = 0 pending findings to the contrary"; String origname "fpb_corr_stdev"; String fullnamepath "/gt2l/ssh_segments/stats/fpb_corr_stdev"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_orbit_number { String long_name "Orbit Number"; String units "1"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Unique identifying number for each planned ICESat-2 orbit"; String origname "orbit_number"; String fullnamepath "/gt2l/ssh_segments/stats/orbit_number"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_full_sat_fract_seg { String long_name "Fraction Fully Saturated"; String units "1"; String source "ATL03"; String contentType "referenceInformation"; String description "Fraction of all pulses in all geosegs used that were fully saturated"; String origname "full_sat_fract_seg"; String fullnamepath "/gt2l/ssh_segments/stats/full_sat_fract_seg"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_ref_azimuth_seg { Float32 _FillValue 3.402823466e+38; String long_name "Azimuth"; String standard_name "azimuth"; String units "radians"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of azimuth of the unit pointing vector for the reference photon in the local ENU frame in radians. The angle is measured from North and positive towards East"; String origname "ref_azimuth_seg"; String fullnamepath "/gt2l/ssh_segments/stats/ref_azimuth_seg"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_tide_oc_pole_seg { Float32 _FillValue 3.402823466e+38; String long_name "Ocean Pole Tide"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of oceanic surface rotational deformation due to polar motion (-2 to +2 mm)"; String origname "tide_oc_pole_seg"; String fullnamepath "/gt2l/ssh_segments/stats/tide_oc_pole_seg"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_surf_type_prcnt { String long_name "Percent Surface Type"; String units "1"; String source "ATL03"; String contentType "referenceInformation"; String description "Percent of each surface type (land, ocean, sea ice, land ice, inland water from masks) in the ocean segment"; String origname "surf_type_prcnt"; String fullnamepath "/gt2l/ssh_segments/stats/surf_type_prcnt"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_dac_seg { Float32 _FillValue 3.402823466e+38; String long_name "Dynamic Atmosphere Correction"; String units "meters"; String source "ATL03"; String contentType "referenceInformation"; String description "Ocean segment average of dynamic atmospheric correction (DAC) includes inverted barometer (IB) affect"; String origname "dac_seg"; String fullnamepath "/gt2l/ssh_segments/stats/dac_seg"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_solar_azimuth_seg { Float32 _FillValue 3.402823466e+38; String long_name "solar azimuth"; String units "degrees_east"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of the azimuth of the sun position vector from the reference photon bounce point position in the local ENU frame. The angle is measured from North and is positive towards East. The average is provided in degrees."; String origname "solar_azimuth_seg"; String fullnamepath "/gt2l/ssh_segments/stats/solar_azimuth_seg"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_tide_earth_free2mean_seg { Float32 _FillValue 3.402823466e+38; String long_name "Earth Tide Free-to-Mean conversion"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average additive value to convert solid earth tide from the tide-free system to the mean tide system. (Add to tide_earth to get solid earth tides in the mean-tide system.)"; String origname "tide_earth_free2mean_seg"; String fullnamepath "/gt2l/ssh_segments/stats/tide_earth_free2mean_seg"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_first_pce_mframe_cnt { String units "counts"; String long_name "First PCE Major frame ID"; String source "l1a/atlas/pcex/altimeter/photons_s and photons_w"; String contentType "referenceInformation"; String description "First Major Frame ID in the SSH segment"; String origname "first_pce_mframe_cnt"; String fullnamepath "/gt2l/ssh_segments/stats/first_pce_mframe_cnt"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_last_geoseg { String long_name "ATL03 geolocation segment ID number."; String units "1"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "A 7 digit number identifying the last along-track ATL03 geolocation segment number in the ocean height segment"; String origname "last_geoseg"; String fullnamepath "/gt2l/ssh_segments/stats/last_geoseg"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_geoid_free2mean_seg { Float32 _FillValue 3.402823466e+38; String long_name "Geoid Free-to-Mean conversion"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average additive value to convert geoid heights from the tide-free system to the mean-tide system. (Subtract from geoid_seg to get the geoid heights in the free-tide system.)"; String origname "geoid_free2mean_seg"; String fullnamepath "/gt2l/ssh_segments/stats/geoid_free2mean_seg"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_tide_load_seg { Float32 _FillValue 3.402823466e+38; String long_name "Load Tide"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of local displacement due to ocean loading (-6 to 0 cm)"; String origname "tide_load_seg"; String fullnamepath "/gt2l/ssh_segments/stats/tide_load_seg"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_neutat_delay_total_seg { Float32 _FillValue 3.402823466e+38; String long_name "Total Neutral Atmospheric Delay"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of total neutral atmosphere delay correction (wet + dry)"; String origname "neutat_delay_total_seg"; String fullnamepath "/gt2l/ssh_segments/stats/neutat_delay_total_seg"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_first_tx_pulse { String long_name "First Transmit Pulse"; String units "counts"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "First Transmit pulse in along-track segment"; String origname "first_tx_pulse"; String fullnamepath "/gt2l/ssh_segments/stats/first_tx_pulse"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_tide_equilibrium_seg { String units "meters"; Float32 _FillValue 3.402823466e+38; String long_name "Equilibrium Tide"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Long period equilibrium tide self-consistent with ocean tide model (+-0.04m)."; String origname "tide_equilibrium_seg"; String fullnamepath "/gt2l/ssh_segments/stats/tide_equilibrium_seg"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_cloudcover_percent_seg { String long_name "Percent Cloudcover"; String units "1"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "The percentage of geosegs in the ocean segment with layer_flag=1"; String origname "cloudcover_percent_seg"; String fullnamepath "/gt2l/ssh_segments/stats/cloudcover_percent_seg"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_backgr_seg { Float32 _FillValue 3.402823466e+38; String long_name "ATL03 background"; String units "1/meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "backgrd_atlas/bckgrd_rate from ATL03 averaged over the segment"; String origname "backgr_seg"; String fullnamepath "/gt2l/ssh_segments/stats/backgr_seg"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_ss_corr { Float32 _FillValue 3.402823466e+38; String long_name "subsurface scattering correction"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Subsurface scattering correction, placeholder = zero pending further findings to the contrary"; String origname "ss_corr"; String fullnamepath "/gt2l/ssh_segments/stats/ss_corr"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_last_tx_pulse { String long_name "Last Transmit Pulse"; String units "counts"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Last Transmit pulse in along-track segment"; String origname "last_tx_pulse"; String fullnamepath "/gt2l/ssh_segments/stats/last_tx_pulse"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_photonns_rate { String long_name "Noise photon count rate, averaged over the segment"; String units "1/meters"; String source "Ocean ATBD Sect. 5.2.4 step N.Sect. 5.2.4 step N"; String contentType "referenceInformation"; String description "Noise photon count rate, averaged over the segment"; String origname "photonns_rate"; String fullnamepath "/gt2l/ssh_segments/stats/photonns_rate"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_photon_rate { String long_name "Photon count rate, averaged over the segment"; String units "1/meters"; String source "Ocean ATBD Sect. 5.2.4 step N."; String contentType "referenceInformation"; String description "Photon count rate, averaged over the segment"; String origname "photon_rate"; String fullnamepath "/gt2l/ssh_segments/stats/photon_rate"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_depth_ocn_seg { String long_name "Ocean depth"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "The average of depth_ocn of geo-segments used in the ocean segment"; String units "meters"; String origname "depth_ocn_seg"; String fullnamepath "/gt2l/ssh_segments/stats/depth_ocn_seg"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } gt2l_ssh_segments_stats_ref_elev_seg { Float32 _FillValue 3.402823466e+38; String long_name "elevation"; String standard_name "elevation"; String units "radians"; String source "ATL03"; String contentType "referenceInformation"; String description "Ocean segment average of elevation of the unit pointing vector for the reference photon in the local ENU frame in radians. The angle is measured from the East-North plane and positive towards Up"; String origname "ref_elev_seg"; String fullnamepath "/gt2l/ssh_segments/stats/ref_elev_seg"; String coordinates "gt2l_ssh_segments_delta_time gt2l_ssh_segments_latitude gt2l_ssh_segments_longitude"; } ancillary_data_release { String long_name "Release Number"; String units "1"; String source "Operations"; String contentType "auxiliaryInformation"; String description "Release number of the granule. The release number is incremented when the software or ancillary data used to create the granule has been changed."; String origname "release"; String fullnamepath "/ancillary_data/release"; } ancillary_data_end_geoseg { String long_name "Ending Geolocation Segment"; String units "1"; String source "Derived"; String contentType "auxiliaryInformation"; String description "The ending geolocation segment number associated with the data contained within this granule. ICESat granule geographic regions are further refined by geolocation segments. During the geolocation process, a geolocation segment is created approximately every 20m from the start of the orbit to the end. The geolocation segments help align the ATLAS strong a weak beams and provide a common segment length for the L2 and higher products. The geolocation segment indices differ slightly from orbit-to-orbit because of the irregular shape of the Earth. The geolocation segment indices on ATL01 and ATL02 are only approximate because beams have not been aligned at the time of their creation."; String origname "end_geoseg"; String fullnamepath "/ancillary_data/end_geoseg"; } ancillary_data_version { String long_name "Version"; String units "1"; String source "Operations"; String contentType "auxiliaryInformation"; String description "Version number of this granule within the release. It is a sequential number corresponding to the number of times the granule has been reprocessed for the current release."; String origname "version"; String fullnamepath "/ancillary_data/version"; } ancillary_data_end_region { String long_name "Ending Region"; String units "1"; String source "Derived"; String contentType "auxiliaryInformation"; String description "The ending product-specific region number associated with the data contained within this granule. ICESat-2 data products are separated by geographic regions. The data contained within a specific region are the same for ATL01 and ATL02. ATL03 regions differ slightly because of different geolocation segment locations caused by the irregular shape of the Earth. The region indices for other products are completely independent."; String origname "end_region"; String fullnamepath "/ancillary_data/end_region"; } ancillary_data_atlas_sdp_gps_epoch { String long_name "ATLAS Epoch Offset"; String units "seconds since 1980-01-06T00:00:00.000000Z"; String source "Operations"; String contentType "auxiliaryInformation"; String description "Number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS Standard Data Product (SDP) epoch (2018-01-01:T00.00.00.000000 UTC). Add this value to delta time parameters to compute full gps_seconds (relative to the GPS epoch) for each data point."; String origname "atlas_sdp_gps_epoch"; String fullnamepath "/ancillary_data/atlas_sdp_gps_epoch"; } ancillary_data_end_rgt { String long_name "Ending Reference Groundtrack"; String units "1"; String source "Derived"; Int32 valid_min 1; Int32 valid_max 1387; String contentType "auxiliaryInformation"; String description "The ending reference groundtrack (RGT) number associated with the data contained within this granule. There are 1387 reference groundtrack in the ICESat-2 repeat orbit. The reference groundtrack increments each time the spacecraft completes a full orbit of the Earth and resets to 1 each time the spacecraft completes a full cycle."; String origname "end_rgt"; String fullnamepath "/ancillary_data/end_rgt"; } ancillary_data_end_delta_time { String long_name "ATLAS End Time (Actual)"; String standard_name "time"; String units "seconds since 2018-01-01"; String source "Derived"; String contentType "auxiliaryInformation"; String description "Number of GPS seconds since the ATLAS SDP epoch at the last data point in the file. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed."; String origname "end_delta_time"; String fullnamepath "/ancillary_data/end_delta_time"; } ancillary_data_end_orbit { String long_name "Ending Orbit Number"; String units "1"; String source "Derived"; String contentType "auxiliaryInformation"; String description "The ending orbit number associated with the data contained within this granule. The orbit number increments each time the spacecraft completes a full orbit of the Earth."; String origname "end_orbit"; String fullnamepath "/ancillary_data/end_orbit"; } ancillary_data_start_cycle { String long_name "Starting Cycle"; String units "1"; String source "Derived"; Int32 valid_min 0; Int32 valid_max 99; String contentType "auxiliaryInformation"; String description "The starting cycle number associated with the data contained within this granule. The cycle number is the counter of the number of 91-day repeat cycles completed by the mission."; String origname "start_cycle"; String fullnamepath "/ancillary_data/start_cycle"; } ancillary_data_data_end_utc { String long_name "End UTC Time of Granule (CCSDS-A, Actual)"; String units "1"; String source "Derived"; String contentType "auxiliaryInformation"; String description "UTC (in CCSDS-A format) of the last data point within the granule."; String origname "data_end_utc"; String fullnamepath "/ancillary_data/data_end_utc"; } ancillary_data_control { String long_name "Control File"; String units "1"; String source "Operations"; String contentType "auxiliaryInformation"; String description "PGE-specific control file used to generate this granule. To re-use, replace breaks (BR) with linefeeds."; String origname "control"; String fullnamepath "/ancillary_data/control"; } ancillary_data_start_gpssow { String long_name "Start GPS SOW of Granule (Actual)"; String units "seconds"; String source "Derived"; String contentType "auxiliaryInformation"; String description "GPS seconds-of-week of the first data point in the granule."; String origname "start_gpssow"; String fullnamepath "/ancillary_data/start_gpssow"; } ancillary_data_granule_end_utc { String long_name "End UTC Time of Granule (CCSDS-A, Requested)"; String units "1"; String source "Derived"; String contentType "auxiliaryInformation"; String description "Requested end time (in UTC CCSDS-A) of this granule."; String origname "granule_end_utc"; String fullnamepath "/ancillary_data/granule_end_utc"; } ancillary_data_end_cycle { String long_name "Ending Cycle"; String units "1"; String source "Derived"; Int32 valid_min 0; Int32 valid_max 99; String contentType "auxiliaryInformation"; String description "The ending cycle number associated with the data contained within this granule. The cycle number is the counter of the number of 91-day repeat cycles completed by the mission."; String origname "end_cycle"; String fullnamepath "/ancillary_data/end_cycle"; } ancillary_data_ocean_use_podppd_flag { String long_name "use_podppd_flag"; String units "1"; String source "Control File Override ( Defined in Ocean ATBD section 4.2.1.2 Coarse selection )"; Int16 valid_min 0; Int16 valid_max 1; String contentType "auxiliaryInformation"; String description "0 - Ignore podppd_flag when processing ocean data; 1 - Skip data where podppd_flag is 1."; String flag_meanings "ignore_podppd_flag use_podppd_flag"; Int16 flag_values 0, 1; String origname "use_podppd_flag"; String fullnamepath "/ancillary_data/ocean/use_podppd_flag"; } ancillary_data_ocean_depth_shore { String long_name "Depth Shore"; String units "meters"; String source "Control File Override ( Defined in Ocean ATBD section 4.2.1.2 Coarse selection )"; String contentType "auxiliaryInformation"; String description "If ocean depth is less than depth_shore, then the current ocean segment is too close to land for ocean processing."; String origname "depth_shore"; String fullnamepath "/ancillary_data/ocean/depth_shore"; } ancillary_data_ocean_ocseg_min_sig { String long_name "Ocean Segment Minimum Signal Photons"; String units "counts"; String source "Ocean ATBD Sect. 5.2.6.2 step I.Sect. 5.2.4 step G"; String contentType "auxiliaryInformation"; String description "Minimum number of signal photons required to process an ocean segment."; String origname "ocseg_min_sig"; String fullnamepath "/ancillary_data/ocean/ocseg_min_sig"; } ancillary_data_ocean_pts2bin { String long_name "Bins in Boxcar Smoother"; String units "1"; String source "Control File Override ( Defined in Ocean ATBD, section 5.3.2 step D and Table 5)"; String contentType "auxiliaryInformation"; String description "Defines the number of bins used in the boxcar smoother"; String origname "pts2bin"; String fullnamepath "/ancillary_data/ocean/pts2bin"; } ancillary_data_ocean_fine_max_secs { String long_name "Maximum Integration Time"; String units "seconds"; String source "Operations"; String contentType "auxiliaryInformation"; String description "Maximum fine segment duration of fine selection segment (equivalent to required number of tx pulses)."; String origname "fine_max_secs"; String fullnamepath "/ancillary_data/ocean/fine_max_secs"; } ancillary_data_ocean_sig_thres { String long_name "Signal Threshold"; String units "percent"; String source "Operations"; String contentType "auxiliaryInformation"; String description "Threshold for photons to be considered signal."; String origname "sig_thres"; String fullnamepath "/ancillary_data/ocean/sig_thres"; } ancillary_data_ocean_conf_lim_min { String long_name "Fallback Minimum Confidence Level"; String units "1"; String source "Operations"; String contentType "auxiliaryInformation"; String description "Minimum fallback confidence level to be used in moving average. Typically 2 or 3."; String origname "conf_lim_min"; String fullnamepath "/ancillary_data/ocean/conf_lim_min"; } ancillary_data_ocean_gaplimit { String long_name "Min Gap for Normal Harmonic Analysis"; String units "meters"; String source "Control File Override ( Defined in Ocean ATBD section 4.2.1.2 Coarse selection )"; String contentType "auxiliaryInformation"; String description "Largest data gap for harmonic analysis."; String origname "gaplimit"; String fullnamepath "/ancillary_data/ocean/gaplimit"; } ancillary_data_ocean_fine_min_sig { String long_name "Minimum Signal Photons"; String units "counts"; String contentType "auxiliaryInformation"; String description "Minimum number of signal photons required to perform fine selection."; String source "Operations"; String origname "fine_min_sig"; String fullnamepath "/ancillary_data/ocean/fine_min_sig"; } ancillary_data_ocean_hist_bot { String long_name "Histogram Bottom"; String units "meters"; String source "Operations"; String contentType "auxiliaryInformation"; String description "Bottom (minimum height) of the coarse and fine select histograms."; String origname "hist_bot"; String fullnamepath "/ancillary_data/ocean/hist_bot"; } ancillary_data_ocean_hist_bin_size { String long_name "Histogram Bin Size"; String units "meters"; String source "Operations"; String contentType "auxiliaryInformation"; String description "Height histogram and impulse response bin size in meters."; String origname "hist_bin_size"; String fullnamepath "/ancillary_data/ocean/hist_bin_size"; } ancillary_data_ocean_gapfilldx { String long_name "Pseudo photon spacing"; String units "meters"; String source "Control File Override ( Defined in Ocean ATBD section 4.2.1.2 Coarse selection )"; String contentType "auxiliaryInformation"; String description "Spacing of pseudo photons for harmonic analysis."; String origname "gapfilldx"; String fullnamepath "/ancillary_data/ocean/gapfilldx"; } ancillary_data_ocean_layer_switch { String long_name "layer_switch"; String units "1"; String source "Control File Override ( Defined in Ocean ATBD section 4.2.1.2 Coarse selection )"; Int16 valid_min 0; Int16 valid_max 1; String contentType "auxiliaryInformation"; String description "Switch to enable usage of layer_flag from ATL09. 0 - Ignore layer_flag when processing ocean data (default); 1 - Process a 14 geoseg ocean segment only if layer_flag is also 1."; String flag_meanings "ignore_layer_flag use_layer_flag"; Int16 flag_values 0, 1; String origname "layer_switch"; String fullnamepath "/ancillary_data/ocean/layer_switch"; } ancillary_data_ocean_cld_thres { String long_name "Cloud Threshold"; String units "percent"; String source "Operations"; String contentType "auxiliaryInformation"; String description "Data associated with cloud percentages above this threshold are not processed."; String origname "cld_thres"; String fullnamepath "/ancillary_data/ocean/cld_thres"; } ancillary_data_ocean_min_sigconf { String long_name "Minimum Confidence Level in coarse_sel"; String units "1"; String source "Operations"; String contentType "auxiliaryInformation"; String description "Minimum confidence level to be used in coarse_sel. Typically 1."; String origname "min_sigconf"; String fullnamepath "/ancillary_data/ocean/min_sigconf"; } ancillary_data_ocean_hist_top { String long_name "Histogram Top"; String units "meters"; String source "Operations"; String contentType "auxiliaryInformation"; String description "Top (maximum height) of the coarse and fine select histograms."; String origname "hist_top"; String fullnamepath "/ancillary_data/ocean/hist_top"; } ancillary_data_ocean_hist_nbins { String long_name "Number of histogram bins."; String units "counts"; String source "Derived"; String contentType "auxiliaryInformation"; String description "Number of bins in each histogram."; String origname "hist_nbins"; String fullnamepath "/ancillary_data/ocean/hist_nbins"; } ancillary_data_ocean_conf_lim { String long_name "Minimum Confidence Level"; String units "1"; String source "Operations"; String contentType "auxiliaryInformation"; String description "Minimum confidence level to be included in moving average. Typically 3 or 4."; String origname "conf_lim"; String fullnamepath "/ancillary_data/ocean/conf_lim"; } ancillary_data_ocean_proc_interval { String long_name "Processing interval"; String units "counts"; String source "Operations"; String contentType "auxiliaryInformation"; String description "The number of 20 meter segments read at once from ATL03."; String origname "proc_interval"; String fullnamepath "/ancillary_data/ocean/proc_interval"; } ancillary_data_ocean_min_ph_pcnt { String long_name "Minimum Photon Percentage"; String units "percent"; String source "Operations"; String contentType "auxiliaryInformation"; String description "Minimum percentage of the selected coarse photons being selected in fine_sel to continue processing."; String origname "min_ph_pcnt"; String fullnamepath "/ancillary_data/ocean/min_ph_pcnt"; } ancillary_data_ocean_sw_delta_t { String long_name "Strong-Weak Delta Time"; String units "seconds"; String source "Operations"; String contentType "auxiliaryInformation"; String description "Approximate time differencebetween strong and weak beams for one segment_id."; String origname "sw_delta_t"; String fullnamepath "/ancillary_data/ocean/sw_delta_t"; } ancillary_data_ocean_nphoton { String long_name "Half Number Photons For Average"; String units "1"; String source "Operations"; String contentType "auxiliaryInformation"; String description "Number of photons either side of central photon to consider averaging 5 for an 11 point average."; String origname "nphoton"; String fullnamepath "/ancillary_data/ocean/nphoton"; } ancillary_data_ocean_oc_region { String long_name "Ocean Region Index"; String units "1"; String source "Operations"; String contentType "auxiliaryInformation"; String description "The ocean region covered within this granule."; String origname "oc_region"; String fullnamepath "/ancillary_data/ocean/oc_region"; } ancillary_data_ocean_nharms { String long_name "Number of Harmonics for Fit"; String units "1"; String source "Operations"; String contentType "auxiliaryInformation"; String description "Number of harmonics to fit to selected surface photons."; String origname "nharms"; String fullnamepath "/ancillary_data/ocean/nharms"; } ancillary_data_ocean_coarse_interval { String long_name "Coarse selection interval"; String units "seconds"; String source "Operations"; String contentType "auxiliaryInformation"; String description "The number of seconds of data used for coarse selection (normally equivalent to 400 laser pulses)."; String origname "coarse_interval"; String fullnamepath "/ancillary_data/ocean/coarse_interval"; } ancillary_data_granule_start_utc { String long_name "Start UTC Time of Granule (CCSDS-A, Requested)"; String units "1"; String source "Derived"; String contentType "auxiliaryInformation"; String description "Requested start time (in UTC CCSDS-A) of this granule."; String origname "granule_start_utc"; String fullnamepath "/ancillary_data/granule_start_utc"; } ancillary_data_start_delta_time { String long_name "ATLAS Start Time (Actual)"; String standard_name "time"; String units "seconds since 2018-01-01"; String source "Derived"; String contentType "auxiliaryInformation"; String description "Number of GPS seconds since the ATLAS SDP epoch at the first data point in the file. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed."; String origname "start_delta_time"; String fullnamepath "/ancillary_data/start_delta_time"; } ancillary_data_start_geoseg { String long_name "Starting Geolocation Segment"; String units "1"; String source "Derived"; String contentType "auxiliaryInformation"; String description "The starting geolocation segment number associated with the data contained within this granule. ICESat granule geographic regions are further refined by geolocation segments. During the geolocation process, a geolocation segment is created approximately every 20m from the start of the orbit to the end. The geolocation segments help align the ATLAS strong a weak beams and provide a common segment length for the L2 and higher products. The geolocation segment indices differ slightly from orbit-to-orbit because of the irregular shape of the Earth. The geolocation segment indices on ATL01 and ATL02 are only approximate because beams have not been aligned at the time of their creation."; String origname "start_geoseg"; String fullnamepath "/ancillary_data/start_geoseg"; } ancillary_data_start_orbit { String long_name "Starting Orbit Number"; String units "1"; String source "Derived"; String contentType "auxiliaryInformation"; String description "The starting orbit number associated with the data contained within this granule. The orbit number increments each time the spacecraft completes a full orbit of the Earth."; String origname "start_orbit"; String fullnamepath "/ancillary_data/start_orbit"; } ancillary_data_data_start_utc { String long_name "Start UTC Time of Granule (CCSDS-A, Actual)"; String units "1"; String source "Derived"; String contentType "auxiliaryInformation"; String description "UTC (in CCSDS-A format) of the first data point within the granule."; String origname "data_start_utc"; String fullnamepath "/ancillary_data/data_start_utc"; } ancillary_data_end_gpsweek { String long_name "Ending GPSWeek of Granule (Actual)"; String units "weeks from 1980-01-06"; String source "Derived"; String contentType "auxiliaryInformation"; String description "GPS week number of the last data point in the granule."; String origname "end_gpsweek"; String fullnamepath "/ancillary_data/end_gpsweek"; } ancillary_data_start_rgt { String long_name "Starting Reference Groundtrack"; String units "1"; String source "Derived"; Int32 valid_min 1; Int32 valid_max 1387; String contentType "auxiliaryInformation"; String description "The starting reference groundtrack (RGT) number associated with the data contained within this granule. There are 1387 reference groundtrack in the ICESat-2 repeat orbit. The reference groundtrack increments each time the spacecraft completes a full orbit of the Earth and resets to 1 each time the spacecraft completes a full cycle."; String origname "start_rgt"; String fullnamepath "/ancillary_data/start_rgt"; } ancillary_data_end_gpssow { String long_name "Ending GPS SOW of Granule (Actual)"; String units "seconds"; String source "Derived"; String contentType "auxiliaryInformation"; String description "GPS seconds-of-week of the last data point in the granule."; String origname "end_gpssow"; String fullnamepath "/ancillary_data/end_gpssow"; } ancillary_data_qa_at_interval { String long_name "QA Along-Track Interval"; String units "1"; String source "control"; String contentType "auxiliaryInformation"; String description "Statistics time interval for along-track QA data."; String origname "qa_at_interval"; String fullnamepath "/ancillary_data/qa_at_interval"; } ancillary_data_start_region { String long_name "Starting Region"; String units "1"; String source "Derived"; String contentType "auxiliaryInformation"; String description "The starting product-specific region number associated with the data contained within this granule. ICESat-2 data products are separated by geographic regions. The data contained within a specific region are the same for ATL01 and ATL02. ATL03 regions differ slightly because of different geolocation segment locations caused by the irregular shape of the Earth. The region indices for other products are completely independent."; String origname "start_region"; String fullnamepath "/ancillary_data/start_region"; } ancillary_data_start_gpsweek { String long_name "Start GPSWeek of Granule (Actual)"; String units "weeks from 1980-01-06"; String source "Derived"; String contentType "auxiliaryInformation"; String description "GPS week number of the first data point in the granule."; String origname "start_gpsweek"; String fullnamepath "/ancillary_data/start_gpsweek"; } gt3r_ssh_segments_delt_seg { String long_name "Ocean Segment Duration"; String units "seconds"; String source "Ocean ATBD Sect. 5.2.4 step N."; String contentType "referenceInformation"; String description "Time duration segment"; String origname "delt_seg"; String fullnamepath "/gt3r/ssh_segments/delt_seg"; String coordinates "gt3r_ssh_segments_delta_time"; } gt3r_ssh_segments_longitude { String long_name "Mean longitude of surface segment"; String standard_name "longitude"; String units "degrees_east"; String source "Ocean ATBD"; Float64 valid_min -180.00000000000000; Float64 valid_max 180.00000000000000; String contentType "referenceInformation"; String description "Mean longitude of surface photons in segment"; String origname "longitude"; String fullnamepath "/gt3r/ssh_segments/longitude"; String coordinates "gt3r_ssh_segments_delta_time"; } gt3r_ssh_segments_latitude { String long_name "Mean latitude of surface segment"; String standard_name "latitude"; String units "degrees_north"; String source "Ocean ATBD"; Float64 valid_min -90.000000000000000; Float64 valid_max 90.000000000000000; String contentType "referenceInformation"; String description "Mean latitude of surface photons in segment"; String origname "latitude"; String fullnamepath "/gt3r/ssh_segments/latitude"; String coordinates "gt3r_ssh_segments_delta_time"; } gt3r_ssh_segments_heights_mix_mu1 { String long_name "Mean of component 1 Gaussian mixture"; String units "meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Mean of component 1 in 2-component Gaussian mixture"; String origname "mix_mu1"; String fullnamepath "/gt3r/ssh_segments/heights/mix_mu1"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_y { String long_name "PDF of Height"; String units "1/meter"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Probability density function of photon surface height"; String origname "y"; String fullnamepath "/gt3r/ssh_segments/heights/y"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_snr_harm { Float32 _FillValue 3.402823466e+38; String long_name "Harmonic SNR"; String units "meters**2/meters**2"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Signal to noise ratio of harmonic fit with coefficients in a to the surface reflected photons including meanoffit2 and with data gaps greater than gaplimit filled with Gaussian white noise about meanoffit2"; String origname "snr_harm"; String fullnamepath "/gt3r/ssh_segments/heights/snr_harm"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_mix_sig2 { String long_name "Standard deviation of component 2 Gaussian mixture"; String units "meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Standard deviation of component 2 in 2-component Gaussian mixture"; String origname "mix_sig2"; String fullnamepath "/gt3r/ssh_segments/heights/mix_sig2"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_mix_m2 { String long_name "Fraction of component 2 Gaussian mixture"; String units "1"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Fraction of component 2 in 2-component Gaussian mixture"; String origname "mix_m2"; String fullnamepath "/gt3r/ssh_segments/heights/mix_m2"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_bin_ssbias { Float32 _FillValue 3.402823466e+38; String long_name "Sea State Bias"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Mean of linear fit removed from surface photon height (4.3.1)"; String origname "bin_ssbias"; String fullnamepath "/gt3r/ssh_segments/heights/bin_ssbias"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_h_skewness { String long_name "Skewness of sea surface height"; String units "1"; String source "Ocean ATBD Sect. 5.2.6.2 step I, equation 23"; String contentType "referenceInformation"; String description "Skewness of photon sea surface height of the distribution represented as an optimum 2-Gaussian mixture fit to the DOT."; String origname "h_skewness"; String fullnamepath "/gt3r/ssh_segments/heights/h_skewness"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_mix_sig1 { String long_name "Standard deviation of component 1 Gaussian mixture"; String units "meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Standard deviation of component 1 in 2-component Gaussian mixture"; String origname "mix_sig1"; String fullnamepath "/gt3r/ssh_segments/heights/mix_sig1"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_wn { String long_name "Harmonic Wave Numbers"; String units "1/meters"; String source "Ocean ATBD, Section 5.3.3.2 step 1"; String contentType "referenceInformation"; String description "nharms wavenumbers, equal to the inverse of wavelengths for each harmonic component in harmonic analysis of heights."; String origname "wn"; String fullnamepath "/gt3r/ssh_segments/heights/wn"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_n_pulse_seg { String long_name "Number laser pulses segment"; String units "counts"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Number of laser pulses in segment"; String origname "n_pulse_seg"; String fullnamepath "/gt3r/ssh_segments/heights/n_pulse_seg"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_np_effect { Float32 _FillValue 3.402823466e+38; String long_name "Degrees of Freedom"; String units "1"; String source "Ocean ATBD, Section 5.3.6.1 c"; String contentType "referenceInformation"; String description "Effective degrees of freedom of the average sea surface height for the ocean segment"; String origname "np_effect"; String fullnamepath "/gt3r/ssh_segments/heights/np_effect"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_xbind { Float32 _FillValue 3.402823466e+38; String long_name "Average distance for each 10m bin"; String units "meters"; String source "Ocean ATBD"; Float32 valid_min 0.000000000; Float32 valid_max 7100.000000; String contentType "referenceInformation"; String description "Averages of along-track distance in each 10-meter bin"; String origname "xbind"; String fullnamepath "/gt3r/ssh_segments/heights/xbind"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_a { String long_name "Harmonic Coefficients"; String units "meters"; String source "Ocean ATBD, Section 5.3.3.2, step 4"; String contentType "referenceInformation"; String description "Vector of 2 x nharms + 1 coefficients for each harmonic component in the harmonic analysis of heights. a(1,oc_seg) is the coefficient for wavenumber equal zero. a(even index j, oc_seg) is the sine coefficient for wn(j/2), and a(odd index j, oc_seg) is the cosine coefficient for wn((j-1)/2)"; String origname "a"; String fullnamepath "/gt3r/ssh_segments/heights/a"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_length_seg { String long_name "Length of segment"; String units "meters"; String source "Ocean ATBD Sect. 5.2.4 step N."; String contentType "referenceInformation"; String description "Length of segment (m)"; String origname "length_seg"; String fullnamepath "/gt3r/ssh_segments/heights/length_seg"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_p0 { String long_name "Intercept of Linear Fit"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Zero intercept of the linear fit used to detrend the photon heights before going into the second round of surface finding"; String origname "p0"; String fullnamepath "/gt3r/ssh_segments/heights/p0"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_h_kurtosis { String long_name "kurtosis of sea surface height"; String units "1"; String source "Ocean ATBD Sect. 5.2.6.2 step I, equation 24."; String contentType "referenceInformation"; String description "Excess kurtosis of sea surface height of the distribution represented as an optimum 2-Gaussian mixture fit to the DOT."; String origname "h_kurtosis"; String fullnamepath "/gt3r/ssh_segments/heights/h_kurtosis"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_dxbar { Float32 _FillValue 3.402823466e+38; String long_name "Mean Dist Between Signal Photons"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Mean distance between signal photons."; String origname "dxbar"; String fullnamepath "/gt3r/ssh_segments/heights/dxbar"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_yvar { String long_name "yvar"; String units "meter^2"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Variance= second moment of Y calculated as the integral of Y(z) times z squared, all divided by the integral of Y(z)."; String origname "yvar"; String fullnamepath "/gt3r/ssh_segments/heights/yvar"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_h_uncrtn { String long_name "Uncertaintity in mean SSH"; String units "1"; String source "Ocean ATBD, Section 5.3.6.1 c"; String contentType "referenceInformation"; String description "Uncertainty in the mean sea surface height over an ocean segment"; String origname "h_uncrtn"; String fullnamepath "/gt3r/ssh_segments/heights/h_uncrtn"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_h_var { String long_name "Variance of fit"; String units "meters^2"; String source "Ocean ATBD Sect. 5.2.6.2 step I, equation 22."; String contentType "referenceInformation"; String description "Variance in meters squared of the distribution represented as an optimum 2-Gaussian mixture fit to the DOT."; String origname "h_var"; String fullnamepath "/gt3r/ssh_segments/heights/h_var"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_ykurt { String long_name "ykurt"; String units "1"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Excess Kurtosis = (fourth moment of Y)/ Yvar squared, all -3. The fourth moment of Y is calculated as the integral of Y(z) times z to the fourth, all divided by the integral of Y(z)."; String origname "ykurt"; String fullnamepath "/gt3r/ssh_segments/heights/ykurt"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_ymean { String long_name "ymean"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Mean=first moment of Y calculated as the integral of Y(z) times z all divided by the integral of Y(z). This, should be ~0 = h -meanoffit2"; String units "meters"; String origname "ymean"; String fullnamepath "/gt3r/ssh_segments/heights/ymean"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_swh { Float32 _FillValue 3.402823466e+38; String long_name "swh"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Significant wave height estimated as 4 times the standard deviation of along track 10-m bin averaged surface height"; String origname "swh"; String fullnamepath "/gt3r/ssh_segments/heights/swh"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_latbind { Float64 _FillValue 1.7976931348623157e+308; String long_name "Average latitude for each 10m bin"; String units "degrees north"; String source "Ocean ATBD"; Float64 valid_min -90.000000000000000; Float64 valid_max 90.000000000000000; String contentType "referenceInformation"; String description "Averages of latitudes in each 10-meter bin"; String origname "latbind"; String fullnamepath "/gt3r/ssh_segments/heights/latbind"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_xrbin { Float32 _FillValue 3.402823466e+38; String long_name "Average 10m photon rate"; String units "photons/meter"; String source "Ocean ATBD"; Float32 valid_min 0.000000000; Float32 valid_max 500.0000000; String contentType "referenceInformation"; String description "The 10-m bin averaged photon rate from the SSB calculation for each ocean segment."; String origname "xrbin"; String fullnamepath "/gt3r/ssh_segments/heights/xrbin"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_dxskew { Float32 _FillValue 3.402823466e+38; String long_name "Skewness of Dist Between Sig Photons"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Skewness of distance between signal photons."; String origname "dxskew"; String fullnamepath "/gt3r/ssh_segments/heights/dxskew"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_lonbind { Float64 _FillValue 1.7976931348623157e+308; String long_name "Average longitude for each 10m bin"; String units "degrees east"; String source "Ocean ATBD"; Float64 valid_min -180.00000000000000; Float64 valid_max 180.00000000000000; String contentType "referenceInformation"; String description "Averages of longitudes in each 10-meter bin"; String origname "lonbind"; String fullnamepath "/gt3r/ssh_segments/heights/lonbind"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_meanoffit2 { String long_name "coarse Sea surface height of segment"; String units "meters"; String source "Ocean ATBD Sect. 5.2.4 step G"; String contentType "referenceInformation"; String description "Average of the linear fit, P0+P1*X, where P0 and P1 are the coefficients of the linear fit to the initial choice of surface photons and X is the array of along-track positions of the final choice of surface photons"; String origname "meanoffit2"; String fullnamepath "/gt3r/ssh_segments/heights/meanoffit2"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_mix_mu2 { String long_name "Mean of component 2 Gaussian mixture"; String units "meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Mean of component 2 in 2-component Gaussian mixture"; String origname "mix_mu2"; String fullnamepath "/gt3r/ssh_segments/heights/mix_mu2"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_dxvar { Float32 _FillValue 3.402823466e+38; String long_name "Variance of Dist Between Sig Photons"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Variance of distance between signal photons."; String origname "dxvar"; String fullnamepath "/gt3r/ssh_segments/heights/dxvar"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_h { String long_name "mean sea surface height"; String units "meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I, equation 21"; String contentType "referenceInformation"; String description "Mean sea surface height in meters computed as the mean of the distribution represented as an optimum 2-Gaussian mixture fit to the DOT plus the geoid and the mean removed in detrending the surface photon heights for analysis."; String origname "h"; String fullnamepath "/gt3r/ssh_segments/heights/h"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_slope_seg { String long_name "Sea surface slope of segment"; String units "meters/meters"; String source "Ocean ATBD Sect. 5.2.6.2 step I.Sect. 5.2.4 step G"; String contentType "referenceInformation"; String description "Sea surface slope equal to the linear coefficient , P1, of the linear fit used to detrend the photon heights before going into the second round of surface finding."; String origname "slope_seg"; String fullnamepath "/gt3r/ssh_segments/heights/slope_seg"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_p1 { String long_name "Slope of Linear Fit"; String units "meters/meter"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Slope of linear fit versus along-track distance to surface photon height"; String origname "p1"; String fullnamepath "/gt3r/ssh_segments/heights/p1"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_htybin { Float32 _FillValue 3.402823466e+38; String long_name "Average 10m height"; String units "meters"; String source "Ocean ATBD"; Float32 valid_min -16.00000000; Float32 valid_max 16.00000000; String contentType "referenceInformation"; String description "The 10-m bin averaged heights from the SSB calculation for each ocean segment."; String origname "htybin"; String fullnamepath "/gt3r/ssh_segments/heights/htybin"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_mix_m1 { String long_name "Fraction of component 1 Gaussian mixture"; String units "1"; String source "Ocean ATBD Sect. 5.2.6.2 step I."; String contentType "referenceInformation"; String description "Fraction of component 1 in 2-component Gaussian mixture"; String origname "mix_m1"; String fullnamepath "/gt3r/ssh_segments/heights/mix_m1"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_heights_yskew { String long_name "yskew"; String units "1"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Skewness = (third moment of Y)/ Yvar to the 3/2 power. The third moment of Y is calculated as the integral of Y(z) times z cubed, all divided by the integral of Y(z)."; String origname "yskew"; String fullnamepath "/gt3r/ssh_segments/heights/yskew"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_first_geoseg { String units "1"; String long_name "ATL03 Geolocation Segment"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "The first of the geosegment ids (segment_id) for each ocean segment"; String origname "first_geoseg"; String fullnamepath "/gt3r/ssh_segments/stats/first_geoseg"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_layer_flag_seg { String long_name "Layer Flag"; String units "1"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "The layer flag from ATL09 that is in effect over 50% of the ocean segment, 0 indicating absence of clouds and forward scattering, and 1 indicating possibility of forward scattering as in ATL09"; String origname "layer_flag_seg"; String fullnamepath "/gt3r/ssh_segments/stats/layer_flag_seg"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_tide_pole_seg { Float32 _FillValue 3.402823466e+38; String long_name "Solid Earth Pole Tide"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Solid Earth Pole Tide -Rotational deformation due to polar motion (-1.5 to 1.5 cm)."; String origname "tide_pole_seg"; String fullnamepath "/gt3r/ssh_segments/stats/tide_pole_seg"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_tide_earth_seg { Float32 _FillValue 3.402823466e+38; String long_name "Earth Tide"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of tide free system solid earth tides"; String origname "tide_earth_seg"; String fullnamepath "/gt3r/ssh_segments/stats/tide_earth_seg"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_near_sat_fract_seg { String long_name "Fraction Nearly Saturated"; String units "1"; String source "ATL03"; String contentType "referenceInformation"; String description "Fraction of all pulses in all geosegs used that were nearly saturated"; String origname "near_sat_fract_seg"; String fullnamepath "/gt3r/ssh_segments/stats/near_sat_fract_seg"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_solar_elevation_seg { Float32 _FillValue 3.402823466e+38; String long_name "solar elevation"; String units "degrees"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of the elevation of the sun position vector from the reference photon bounce point position in the local ENU frame. The angle is measured from the East-North plane and is positive towards Up. The average is provided in degrees."; String origname "solar_elevation_seg"; String fullnamepath "/gt3r/ssh_segments/stats/solar_elevation_seg"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_geoid_seg { Float32 _FillValue 3.402823466e+38; String long_name "Geoid (Mean Tide System)"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of mean tide system geoid height above the WGS 84 reference ellipsoid (range -107 to 86 m)."; String origname "geoid_seg"; String fullnamepath "/gt3r/ssh_segments/stats/geoid_seg"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_ss_corr_stdev { Float32 _FillValue 3.402823466e+38; String long_name "ss_corr_stdev"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Estimated error of subsurface scattering correction, placeholder = zero pending further findings to the contrary"; String origname "ss_corr_stdev"; String fullnamepath "/gt3r/ssh_segments/stats/ss_corr_stdev"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_last_pce_mframe_cnt { String long_name "Last PCE Major frame ID"; String units "counts"; String source "l1a/atlas/pcex/altimeter/photons_s and photons_w"; String contentType "referenceInformation"; String description "Last Major Frame ID in the SSH segment"; String origname "last_pce_mframe_cnt"; String fullnamepath "/gt3r/ssh_segments/stats/last_pce_mframe_cnt"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_seg_dist_x_seg { String long_name "Distance along-track"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Ocean segment average of the along-track distance from the equator crossing to the start of the 20-m geolocation segments included in the ocean segment"; String origname "seg_dist_x_seg"; String fullnamepath "/gt3r/ssh_segments/stats/seg_dist_x_seg"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_fpb_corr { Float32 _FillValue 3.402823466e+38; String long_name "first photon bias correction"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Estimated first-photon bias correction to mean segment height = 0 pending findings to the contrary for the ocean"; String origname "fpb_corr"; String fullnamepath "/gt3r/ssh_segments/stats/fpb_corr"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_tide_ocean_seg { Float32 _FillValue 3.402823466e+38; String long_name "Ocean Tide"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of ocean tides including diurnal and semi-diurnal (harmonic analysis) and longer period tides (dynamic and self-consistent equilibrium)"; String origname "tide_ocean_seg"; String fullnamepath "/gt3r/ssh_segments/stats/tide_ocean_seg"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_fpb_corr_stdev { String units "meters"; Float32 _FillValue 3.402823466e+38; String long_name "fpb_corr_stdev"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Estimated error in fpb_corr = 0 pending findings to the contrary"; String origname "fpb_corr_stdev"; String fullnamepath "/gt3r/ssh_segments/stats/fpb_corr_stdev"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_orbit_number { String long_name "Orbit Number"; String units "1"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Unique identifying number for each planned ICESat-2 orbit"; String origname "orbit_number"; String fullnamepath "/gt3r/ssh_segments/stats/orbit_number"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_full_sat_fract_seg { String long_name "Fraction Fully Saturated"; String units "1"; String source "ATL03"; String contentType "referenceInformation"; String description "Fraction of all pulses in all geosegs used that were fully saturated"; String origname "full_sat_fract_seg"; String fullnamepath "/gt3r/ssh_segments/stats/full_sat_fract_seg"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_ref_azimuth_seg { Float32 _FillValue 3.402823466e+38; String long_name "Azimuth"; String standard_name "azimuth"; String units "radians"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of azimuth of the unit pointing vector for the reference photon in the local ENU frame in radians. The angle is measured from North and positive towards East"; String origname "ref_azimuth_seg"; String fullnamepath "/gt3r/ssh_segments/stats/ref_azimuth_seg"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_tide_oc_pole_seg { Float32 _FillValue 3.402823466e+38; String long_name "Ocean Pole Tide"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of oceanic surface rotational deformation due to polar motion (-2 to +2 mm)"; String origname "tide_oc_pole_seg"; String fullnamepath "/gt3r/ssh_segments/stats/tide_oc_pole_seg"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_surf_type_prcnt { String long_name "Percent Surface Type"; String units "1"; String source "ATL03"; String contentType "referenceInformation"; String description "Percent of each surface type (land, ocean, sea ice, land ice, inland water from masks) in the ocean segment"; String origname "surf_type_prcnt"; String fullnamepath "/gt3r/ssh_segments/stats/surf_type_prcnt"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_dac_seg { Float32 _FillValue 3.402823466e+38; String long_name "Dynamic Atmosphere Correction"; String units "meters"; String source "ATL03"; String contentType "referenceInformation"; String description "Ocean segment average of dynamic atmospheric correction (DAC) includes inverted barometer (IB) affect"; String origname "dac_seg"; String fullnamepath "/gt3r/ssh_segments/stats/dac_seg"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_solar_azimuth_seg { Float32 _FillValue 3.402823466e+38; String long_name "solar azimuth"; String units "degrees_east"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of the azimuth of the sun position vector from the reference photon bounce point position in the local ENU frame. The angle is measured from North and is positive towards East. The average is provided in degrees."; String origname "solar_azimuth_seg"; String fullnamepath "/gt3r/ssh_segments/stats/solar_azimuth_seg"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_tide_earth_free2mean_seg { Float32 _FillValue 3.402823466e+38; String long_name "Earth Tide Free-to-Mean conversion"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average additive value to convert solid earth tide from the tide-free system to the mean tide system. (Add to tide_earth to get solid earth tides in the mean-tide system.)"; String origname "tide_earth_free2mean_seg"; String fullnamepath "/gt3r/ssh_segments/stats/tide_earth_free2mean_seg"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_first_pce_mframe_cnt { String units "counts"; String long_name "First PCE Major frame ID"; String source "l1a/atlas/pcex/altimeter/photons_s and photons_w"; String contentType "referenceInformation"; String description "First Major Frame ID in the SSH segment"; String origname "first_pce_mframe_cnt"; String fullnamepath "/gt3r/ssh_segments/stats/first_pce_mframe_cnt"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_last_geoseg { String long_name "ATL03 geolocation segment ID number."; String units "1"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "A 7 digit number identifying the last along-track ATL03 geolocation segment number in the ocean height segment"; String origname "last_geoseg"; String fullnamepath "/gt3r/ssh_segments/stats/last_geoseg"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_geoid_free2mean_seg { Float32 _FillValue 3.402823466e+38; String long_name "Geoid Free-to-Mean conversion"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average additive value to convert geoid heights from the tide-free system to the mean-tide system. (Subtract from geoid_seg to get the geoid heights in the free-tide system.)"; String origname "geoid_free2mean_seg"; String fullnamepath "/gt3r/ssh_segments/stats/geoid_free2mean_seg"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_tide_load_seg { Float32 _FillValue 3.402823466e+38; String long_name "Load Tide"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of local displacement due to ocean loading (-6 to 0 cm)"; String origname "tide_load_seg"; String fullnamepath "/gt3r/ssh_segments/stats/tide_load_seg"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_neutat_delay_total_seg { Float32 _FillValue 3.402823466e+38; String long_name "Total Neutral Atmospheric Delay"; String units "meters"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Ocean segment average of total neutral atmosphere delay correction (wet + dry)"; String origname "neutat_delay_total_seg"; String fullnamepath "/gt3r/ssh_segments/stats/neutat_delay_total_seg"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_first_tx_pulse { String long_name "First Transmit Pulse"; String units "counts"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "First Transmit pulse in along-track segment"; String origname "first_tx_pulse"; String fullnamepath "/gt3r/ssh_segments/stats/first_tx_pulse"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_tide_equilibrium_seg { String units "meters"; Float32 _FillValue 3.402823466e+38; String long_name "Equilibrium Tide"; String source "ATL03"; String contentType "auxiliaryInformation"; String description "Long period equilibrium tide self-consistent with ocean tide model (+-0.04m)."; String origname "tide_equilibrium_seg"; String fullnamepath "/gt3r/ssh_segments/stats/tide_equilibrium_seg"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_cloudcover_percent_seg { String long_name "Percent Cloudcover"; String units "1"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "The percentage of geosegs in the ocean segment with layer_flag=1"; String origname "cloudcover_percent_seg"; String fullnamepath "/gt3r/ssh_segments/stats/cloudcover_percent_seg"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_backgr_seg { Float32 _FillValue 3.402823466e+38; String long_name "ATL03 background"; String units "1/meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "backgrd_atlas/bckgrd_rate from ATL03 averaged over the segment"; String origname "backgr_seg"; String fullnamepath "/gt3r/ssh_segments/stats/backgr_seg"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_ss_corr { Float32 _FillValue 3.402823466e+38; String long_name "subsurface scattering correction"; String units "meters"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Subsurface scattering correction, placeholder = zero pending further findings to the contrary"; String origname "ss_corr"; String fullnamepath "/gt3r/ssh_segments/stats/ss_corr"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_last_tx_pulse { String long_name "Last Transmit Pulse"; String units "counts"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "Last Transmit pulse in along-track segment"; String origname "last_tx_pulse"; String fullnamepath "/gt3r/ssh_segments/stats/last_tx_pulse"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_photonns_rate { String long_name "Noise photon count rate, averaged over the segment"; String units "1/meters"; String source "Ocean ATBD Sect. 5.2.4 step N.Sect. 5.2.4 step N"; String contentType "referenceInformation"; String description "Noise photon count rate, averaged over the segment"; String origname "photonns_rate"; String fullnamepath "/gt3r/ssh_segments/stats/photonns_rate"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_photon_rate { String long_name "Photon count rate, averaged over the segment"; String units "1/meters"; String source "Ocean ATBD Sect. 5.2.4 step N."; String contentType "referenceInformation"; String description "Photon count rate, averaged over the segment"; String origname "photon_rate"; String fullnamepath "/gt3r/ssh_segments/stats/photon_rate"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_depth_ocn_seg { String long_name "Ocean depth"; String source "Ocean ATBD"; String contentType "referenceInformation"; String description "The average of depth_ocn of geo-segments used in the ocean segment"; String units "meters"; String origname "depth_ocn_seg"; String fullnamepath "/gt3r/ssh_segments/stats/depth_ocn_seg"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } gt3r_ssh_segments_stats_ref_elev_seg { Float32 _FillValue 3.402823466e+38; String long_name "elevation"; String standard_name "elevation"; String units "radians"; String source "ATL03"; String contentType "referenceInformation"; String description "Ocean segment average of elevation of the unit pointing vector for the reference photon in the local ENU frame in radians. The angle is measured from the East-North plane and positive towards Up"; String origname "ref_elev_seg"; String fullnamepath "/gt3r/ssh_segments/stats/ref_elev_seg"; String coordinates "gt3r_ssh_segments_delta_time gt3r_ssh_segments_latitude gt3r_ssh_segments_longitude"; } ds_a { String long_name "Wave Number Dimension Scale"; String units "1"; String source "Dim Scale"; String contentType "auxiliaryInformation"; String description "Dimension scale for harmonic coefficients."; String origname "ds_a"; String fullnamepath "/ds_a"; } ds_surf_type { String long_name "Surface Type Dimension Scale"; String units "1"; String source "Dim Scale"; Int32 valid_min 1; Int32 valid_max 5; String contentType "auxiliaryInformation"; String description "Dimension scale indexing the surface type array. Index=1 corresponds to Land; index = 2 corresponds to Ocean; Index = 3 corresponds to SeaIce; Index=4 corresponds to LandIce; Index=5 corresponds to InlandWater"; String flag_meanings "land ocean seaice landice inland_water"; Int32 flag_values 1, 2, 3, 4, 5; String origname "ds_surf_type"; String fullnamepath "/ds_surf_type"; } ds_wn { String long_name "Wave Number Dimension Scale"; String units "1"; String source "Dim Scale"; String contentType "auxiliaryInformation"; String description "Dimension scale for harmonic wave numbers."; String origname "ds_wn"; String fullnamepath "/ds_wn"; } ds_xbin { String long_name "10m bin centers"; String units "meters"; String source "Dim Scale"; Float32 valid_min 0.000000000; Float32 valid_max 7100.000000; String contentType "auxiliaryInformation"; String description "Bin center values for the 10m bin averaged data from the SSB calculation."; String origname "ds_xbin"; String fullnamepath "/ds_xbin"; } ds_y_bincenters { String long_name "Y bins center"; String units "meters"; String source "Dim Scale"; Float32 valid_min -15.00000000; Float32 valid_max 15.00000000; String contentType "auxiliaryInformation"; String description "Bin center values for the y histogram. Ranges -14.995 to 14.995 meters in 1 centimeter bin size steps."; String origname "ds_y_bincenters"; String fullnamepath "/ds_y_bincenters"; } gt1l_ssh_segments_delta_time { String long_name "Elapsed GPS seconds"; String standard_name "time"; String units "seconds since 2018-01-01"; String source "telemetry"; String contentType "referenceInformation"; String description "Mean time for the ocean surface segment in 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 origname "delta_time"; String fullnamepath "/gt1l/ssh_segments/delta_time"; } gt1r_ssh_segments_delta_time { String long_name "Elapsed GPS seconds"; String standard_name "time"; String units "seconds since 2018-01-01"; String source "telemetry"; String contentType "referenceInformation"; String description "Mean time for the ocean surface segment in 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 origname "delta_time"; String fullnamepath "/gt1r/ssh_segments/delta_time"; } gt2l_ssh_segments_delta_time { String long_name "Elapsed GPS seconds"; String standard_name "time"; String units "seconds since 2018-01-01"; String source "telemetry"; String contentType "referenceInformation"; String description "Mean time for the ocean surface segment in 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 origname "delta_time"; String fullnamepath "/gt2l/ssh_segments/delta_time"; } gt2r_ssh_segments_delta_time { String long_name "Elapsed GPS seconds"; String standard_name "time"; String units "seconds since 2018-01-01"; String source "telemetry"; String contentType "referenceInformation"; String description "Mean time for the ocean surface segment in 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 origname "delta_time"; String fullnamepath "/gt2r/ssh_segments/delta_time"; } gt3l_ssh_segments_delta_time { String long_name "Elapsed GPS seconds"; String standard_name "time"; String units "seconds since 2018-01-01"; String source "telemetry"; String contentType "referenceInformation"; String description "Mean time for the ocean surface segment in 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 origname "delta_time"; String fullnamepath "/gt3l/ssh_segments/delta_time"; } gt3r_ssh_segments_delta_time { String long_name "Elapsed GPS seconds"; String standard_name "time"; String units "seconds since 2018-01-01"; String source "telemetry"; String contentType "referenceInformation"; String description "Mean time for the ocean surface segment in 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 origname "delta_time"; String fullnamepath "/gt3r/ssh_segments/delta_time"; } orbit_info_crossing_time { String long_name "Ascending Node Crossing Time"; String standard_name "time"; String units "seconds since 2018-01-01"; String source "POD/PPD"; String contentType "referenceInformation"; String description "The time, in seconds since the ATLAS SDP GPS Epoch, at which the ascending node crosses the equator. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed."; String origname "crossing_time"; String fullnamepath "/orbit_info/crossing_time"; } orbit_info_sc_orient_time { String long_name "Time of Last Spacecraft Orientation Change"; String standard_name "time"; String units "seconds since 2018-01-01"; String source "POD/PPD"; String contentType "referenceInformation"; String description "The time of the last spacecraft orientation change between forward, backward and transitional flight modes, expressed in seconds since the ATLAS SDP GPS Epoch. ICESat-2 is considered to be flying forward when the weak beams are leading the strong beams; and backward when the strong beams are leading the weak beams. ICESat-2 is considered to be in transition while it is maneuvering between the two orientations. Science quality is potentially degraded while in transition mode. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed."; String origname "sc_orient_time"; String fullnamepath "/orbit_info/sc_orient_time"; } FakeDim0 { String units "level"; } DODS_EXTRA { String Unlimited_Dimension "ds_a", "ds_wn", "ds_xbin", "ds_y_bincenters", "gt1l_ssh_segments_delta_time", "gt1r_ssh_segments_delta_time", "gt2l_ssh_segments_delta_time", "gt2r_ssh_segments_delta_time", "gt3l_ssh_segments_delta_time", "gt3r_ssh_segments_delta_time", "orbit_info_crossing_time", "orbit_info_sc_orient_time"; } }