2026-05-13T13:18:47Zhttp://nsidc.org/api/dataset/metadata/oaioai:nsidc.org/ATL23.0012026-04-30T17:16:32Zcumulusretirednasa_nsidc_daac
ATL23.001ATLAS/ICESat-2 L3B Monthly 3-Month Gridded Dynamic Ocean TopographyMorison, J. H., Hancock, D., Dickinson, S., Robbins, J. & Roberts, L.ATLAS/ICESat-2 L3B Monthly 3-Month Gridded Dynamic Ocean Topography2023-09-14Boulder, Colorado USANASA NSIDC DAAC: NASA National Snow and Ice Data Center Distributed Active Archive Center1false10.5067/ATLAS/ATL23.001https://nsidc.org/sites/default/files/documents/user-guide/atl23-v001-userguide.pdfATL23Technical ContactNSIDCUser Servicesnsidc@nsidc.org1-303-492-61991-303-492-2468CIRES, 449 UCBUniversity of ColoradoBoulderCO80309-0449USAEARTH SCIENCEOCEANSSEA SURFACE TOPOGRAPHYSEA SURFACE HEIGHT icesat2-projectATLASAdvanced Topographic Laser Altimeter SystemICESat-2Ice, Cloud, and land Elevation Satellite-22018-10-132025-02-28deprecated-8888-180180GEOGRAPHIC REGIONGLOBAL OCEAN25 km25 km3 monthThese 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 contains 3-month gridded averages of dynamic ocean topography (DOT) over midlatitude, north-polar, and south-polar grids derived from the along-track ATLAS/ICESat-2 L3A Ocean Surface Height product (ATL12). Monthly gridded sea surface height (SSH) can be calculated by adding the mean DOT and the weighted average geoid height also provided. Both single beam and all-beam gridded averages are available. Simple averages, degree-of-freedom averages, and averages interpolated to the center of grid cells are included, as well as uncertainty estimates.VIEW RELATED INFORMATIONhttps://nsidc.org/sites/default/files/documents/user-guide/atl23-v001-userguide.pdfATLAS/ICESat-2 L3B Monthly 3-Month Gridded Dynamic Ocean Topography, Version 1 User GuideCEOS IDN DIFVERSION 9.92023-09-142026-04-30NSIDCVersion SummaryInitial releaseNSIDCMinor Version1Data were reprocessed using ITRF2014 (replacing ITRF2020) for consistency across the entire data set. 2022-11-132023-10-260NSIDCSpatial Reference SystemsEPSG:3411NSIDC Sea Ice Polar Stereographic NorthEPSG:3412NSIDC Sea Ice Polar Stereographic SouthEPSG:4326WGS 84NSIDCLevel of ServiceNo Data AccessNSIDCFull Dataset CitationMorison, J. H., Hancock, D., Dickinson, S., Robbins, J. & Roberts, L. (2023). <i>ATLAS/ICESat-2 L3B Monthly 3-Month Gridded Dynamic Ocean Topography</i>. (ATL23, Version 1). [Data Set]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. <a href="https://doi.org/10.5067/ATLAS/ATL23.001">https://doi.org/10.5067/ATLAS/ATL23.001</a>. [<i><describe subset used if applicable></i>].NSIDCRetiredtrue