2026-07-30T03:47:55Zhttp://nsidc.org/api/dataset/metadata/oai

oai:nsidc.org/ATL10.0052026-04-07T16:16:38Zcumulusecsretirednasa_nsidc_daac

ATL10.005ATLAS/ICESat-2 L3A Sea Ice FreeboardKwok, R., Petty, A. A., Cunningham, G., Markus, T., Hancock, D., Ivanoff, A., Wimert, J., Bagnardi, M., Kurtz, N. & the ICESat-2 Science TeamATLAS/ICESat-2 L3A Sea Ice Freeboard2021-11-29Boulder, Colorado USANSIDC: National Snow and Ice Data Center5false10.5067/ATLAS/ATL10.005https://nsidc.org/sites/default/files/atl10-v005-userguide_1_0.pdfATL10Technical ContactNSIDCUser Servicesnsidc@nsidc.org1-303-492-61991-303-492-2468

CIRES, 449 UCB

University of Colorado

BoulderCO80309-0449USAEARTH SCIENCECRYOSPHERESEA ICEFREEBOARD Climatology/Meteorology/Atmosphereicesat2-projectSea Ice Prediction Network-projectSIPN ice thickness-projectSIPN-projectATLASAdvanced Topographic Laser Altimeter SystemICESat-2Ice, Cloud, and land Elevation Satellite-22018-10-142022-10-12deprecated-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 EOSDIS Data Use Policy, see https://earthdata.nasa.gov/earth-observation-data/data-use-policy.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.org1-303-492-6199

National Snow and Ice Data Center

CIRES, 449 UCB

University of Colorado

BoulderCO80309-0449USAHTTPSHDF5

This 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-v005-userguide_1_0.pdfATLAS/ICESat-2 L3A Sea Ice Freeboard, Version 5 User GuideCEOS IDN DIFVERSION 9.92021-11-292026-04-07NSIDCVersion SummaryThe ATL10 QA check for insufficient output failure now checks for the number of valid freeboard ice segments and number of valid, un-interpolated, reference surfaces; The description of the reference surface interpolation flag was updated to match the procedure in the atlas_l3a_fb code A controllable parameter; The height segment inverted barometer variable was moved to the geophysical group from the height segments group; The computation of the reference surface height was updated to better match the description in the ATBD; The MMS, Geoid, and the two free-to-mean parameters are calculated at the reference surface-scale and added to ATL10; The along track distance is calculated at the beam reference surface and lead group scale; The reference surface time and location is set to the center of the reference surface; The new PODPPD flag, and updated segment_type flag, are read from ATL07 and used in filtering which sea ice segments are used in freeboard processing; An error in the computation of reference surface sigma values led to missing sigma variables for individual freeboard segments and was corrected by simply interpolating from nearby reference surface sigma values; interpolation flag value of 3; Modified the integration test scripts to generate browse products and check for the presence of default 1 and default 2 plots; The ATLAS browse plot for ATL10 reference surface and freeboard heights has been corrected; New parameters of mean ocean sea level pressure dynamic inverted barometer effect from ATL07 and written to ATL10.NSIDCMinor VersionNSIDCSpatial Reference SystemsEPSG:4326WGS 84NSIDCLevel of ServiceNo Data AccessNSIDCFull Dataset CitationKwok, R., Petty, A. A., Cunningham, G., Markus, T., Hancock, D., Ivanoff, A., Wimert, J., Bagnardi, M., Kurtz, N. & the ICESat-2 Science Team. (2021). <i>ATLAS/ICESat-2 L3A Sea Ice Freeboard</i>. (ATL10, Version 5). [Data Set]. Boulder, Colorado USA. National Snow and Ice Data Center. <a href="https://doi.org/10.5067/ATLAS/ATL10.005">https://doi.org/10.5067/ATLAS/ATL10.005</a>. [<i><describe subset used if applicable></i>].NSIDCRetiredtrue