2026-06-02T21:51:29Zhttp://nsidc.org/api/dataset/metadata/oaioai:nsidc.org/ATL10.0032026-04-01T18:16:23Zcumulusretirednasa_nsidc_daac
ATL10.003ATLAS/ICESat-2 L3A Sea Ice FreeboardKwok, R., Cunningham, G., Markus, T., Hancock, D., Morison, J. H., Palm, S. P., Farrell, S. L., Ivanoff, A., Wimert, J. & the ICESat-2 Science TeamATLAS/ICESat-2 L3A Sea Ice Freeboard2020-07-09Boulder, Colorado USANASA NSIDC DAAC: NASA National Snow and Ice Data Center Distributed Active Archive Center3false10.5067/ATLAS/ATL10.003https://nsidc.org/sites/default/files/atl10-v003-userguide_1.pdfATL10Technical ContactNSIDCUser Servicesnsidc@nsidc.org1-303-492-61991-303-492-2468CIRES, 449 UCBUniversity of ColoradoBoulderCO80309-0449USAEARTH SCIENCECRYOSPHERESEA ICEFREEBOARD Climatology/Meteorology/Atmosphereicesat2-projectSIPN ice thickness-projectATLASAdvanced Topographic Laser Altimeter SystemICESat-2Ice, Cloud, and land Elevation Satellite-22018-10-142020-11-11deprecated-9090-180180GEOGRAPHIC REGIONSOUTHERN HEMISPHEREGEOGRAPHIC REGIONNORTHERN HEMISPHEREVaries91 dayThese data have been retired and are no longer accessible, though a more recent version of these data may be available.These data have been retired and are no longer available for use, though a more recent version of these data may be available. Cite any prior or planned use of these data according to the recommended citation at https://nsidc.org/about/data-use-and-copyright. For more information on the NASA ESDIS Data Use Guidance, see https://www.earthdata.nasa.gov/engage/open-data-services-software-policies/data-use-guidance.EnglishNASA/GSFC/SED/ESD/I2-SIPSNASA NSIDC DAACNASA National Snow and Ice Data Center Distributed Active Archive Centerhttps://nsidc.org/daacData Center ContactNSIDCUser Servicesnsidc@nsidc.org1-303-492-6199National Snow and Ice Data CenterCIRES, 449 UCBUniversity of ColoradoBoulderCO80309-0449USAHTTPSHDF5This data set (ATL10) contains estimates of sea ice freeboard, calculated using three different approaches. Sea ice leads used to establish the reference sea surface and descriptive statistics used in the height estimates are also provided. The data were acquired by the Advanced Topographic Laser Altimeter System (ATLAS) instrument on board the Ice, Cloud and land Elevation Satellite-2 (ICESat-2) observatory.VIEW RELATED INFORMATIONhttps://nsidc.org/sites/default/files/atl10-v003-userguide_1.pdfATLAS/ICESat-2 L3A Sea Ice Freeboard, Version 3 User GuideCEOS IDN DIFVERSION 9.92020-07-092026-04-01NSIDCVersion SummaryAdded additional freeboard browse images to allow for better qualitative assessment of the product; Fixed a bug that was producing not-a-number (NaN) freeboard values in ATL10 products; Implemented a flag to identify which designated sea surface height (SSH) segments were used to compute reference surfaces; Improved the description of freeboard height in the file metadata; Added a filter prior to sea ice processing that sets upper and lower limits before determining the reference surface. This approach removes outliers that are unreasonable, relative to sea surface height. Separate bounds are used for the Arctic and Antarctic to account for geographic and seasonal dependencies.NSIDCMinor VersionNSIDCSpatial Reference SystemsEPSG:4326WGS 84NSIDCLevel of ServiceNo Data AccessNSIDCFull Dataset CitationKwok, R., Cunningham, G., Markus, T., Hancock, D., Morison, J. H., Palm, S. P., Farrell, S. L., Ivanoff, A., Wimert, J. & the ICESat-2 Science Team. (2020). <i>ATLAS/ICESat-2 L3A Sea Ice Freeboard</i>. (ATL10, Version 3). [Data Set]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. <a href="https://doi.org/10.5067/ATLAS/ATL10.003">https://doi.org/10.5067/ATLAS/ATL10.003</a>. [<i><describe subset used if applicable></i>].NSIDCRetiredtrue