2026-06-27T13:13:24Zhttp://nsidc.org/api/dataset/metadata/oaioai:nsidc.org/ATL03.0052026-05-05T20:15:51Zcumulusecsretirednasa_nsidc_daac
ATL03.005ATLAS/ICESat-2 L2A Global Geolocated Photon DataNeumann, T. A., Brenner, A., Hancock, D., Robbins, J., Saba, J., Harbeck, K., Gibbons, A., Lee, J., Luthcke, S. B., Rebold, T. et alATLAS/ICESat-2 L2A Global Geolocated Photon Data2021-11-29Boulder, Colorado USANASA NSIDC DAAC: NASA National Snow and Ice Data Center Distributed Active Archive Center5false10.5067/ATLAS/ATL03.005https://nsidc.org/sites/default/files/atl03-v005-userguide_1.pdfATL03Technical ContactNSIDCUser Servicesnsidc@nsidc.org1-303-492-61991-303-492-2468CIRES, 449 UCBUniversity of ColoradoBoulderCO80309-0449USAEARTH SCIENCELAND SURFACETOPOGRAPHY TERRAIN ELEVATIONClimatology/Meteorology/Atmosphereicesat2-projectATLASAdvanced Topographic Laser Altimeter SystemICESat-2Ice, Cloud, and land Elevation Satellite-22018-10-132022-10-13deprecated-9090-180180GEOGRAPHIC REGIONGLOBAL70 cm70 cm91 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.org1-303-492-6199National Snow and Ice Data CenterCIRES, 449 UCBUniversity of ColoradoBoulderCO80309-0449USAHTTPSHDF5This data set (ATL03) contains height above the WGS 84 ellipsoid (ITRF2014 reference frame), latitude, longitude, and time for all photons downlinked by the Advanced Topographic Laser Altimeter System (ATLAS) instrument on board the Ice, Cloud and land Elevation Satellite-2 (ICESat-2) observatory. The ATL03 product was designed to be a single source for all photon data and ancillary information needed by higher-level ATLAS/ICESat-2 products. As such, it also includes spacecraft and instrument parameters and ancillary data not explicitly required for ATL03.VIEW RELATED INFORMATIONhttps://nsidc.org/sites/default/files/atl03-v005-userguide_1.pdfATLAS/ICESat-2 L2A Global Geolocated Photon Data, Version 5 User GuideCEOS IDN DIFVERSION 9.92021-11-292026-05-05NSIDCVersion SummaryChanges for this version include:
<ul>
<li>Updated photon heights to include time-dependent range bias. The mean offset between ATL03 version 4 and version 5 photon heights is on the order of 1.2 cm. See more details in the user guide and/or ATBD for this data product.</li>
<li>Added XML metadata to indicate the percentage of each surface type within a granule.</li>
<li>Updated podppd_flag to include identification of ATLAS calibration periods.</li>
<li>Updated the default uncertainty values to represent the current best estimates.</li>
<li>Improved the TEP flagging.</li>
<li>Implemented some bug fixes including updates in the photon selection algorithm, calculation of the neutral atmosphere delay derivative and quality_ph flagging improvements.</li>
</ul>NSIDCMinor VersionNSIDCSpatial Reference SystemsEPSG:4326WGS 84NSIDCLevel of ServiceNo Data AccessNSIDCFull Dataset CitationNeumann, T. A., Brenner, A., Hancock, D., Robbins, J., Saba, J., Harbeck, K., Gibbons, A., Lee, J., Luthcke, S. B., Rebold, T. et al. (2021). <i>ATLAS/ICESat-2 L2A Global Geolocated Photon Data</i>. (ATL03, Version 5). [Data Set]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. <a href="https://doi.org/10.5067/ATLAS/ATL03.005">https://doi.org/10.5067/ATLAS/ATL03.005</a>. [<i><describe subset used if applicable></i>].NSIDCRetiredtrue