2026-05-14T09:59:34Zhttp://nsidc.org/api/dataset/metadata/oai

oai:nsidc.org/AE_SI25.0032026-03-24T21:16:44Zcumulusretirednasa_nsidc_daac

AE_SI25.003AMSR-E/Aqua Daily L3 25 km Brightness Temperature & Sea Ice Concentration Polar GridsCavalieri, D. J., Markus, T. & Comiso, J. C.AMSR-E/Aqua Daily L3 25 km Brightness Temperature & Sea Ice Concentration Polar Grids2014-07-01Boulder, Colorado USANASA NSIDC DAAC: NASA National Snow and Ice Data Center Distributed Active Archive Center3false10.5067/AMSR-E/AE_SI25.003https://nsidc.org/sites/default/files/ae_si25-v003-userguide_2.pdfAE_SI25Technical ContactNSIDCUser Servicesnsidc@nsidc.org1-303-492-61991-303-492-2468

CIRES, 449 UCB

University of Colorado

BoulderCO80309-0449USAEARTH SCIENCESPECTRAL/ENGINEERINGINFRARED WAVELENGTHSBRIGHTNESS TEMPERATURE EARTH SCIENCECRYOSPHERESEA ICESEA ICE CONCENTRATION Climatology/Meteorology/AtmosphereAE_SI25AMSR-EAMSR-E-projectAntarctic Sea IceAquaArctic Sea IceBRIGHTNESS TEMPERATURESDAACEOSDISEOS PM-1ImageryLeadsModified Bootstrap AlgorithmModified NASA Team AlgorithmNASANSIDCPassive Microwave RadiationPassive Microwave Sea Ice DataPolar Sea IcePolar Stereo Brightness Temps-projectPolar Stereo Sea Ice-project PolynyasRadianceRemote SensingSea Ice ConcentrationsSea Ice ExtentSea Ice PM Polar Stereo-projectSea Ice VariabilitySouthern OceanTbsAMSR-EAdvanced Microwave Scanning Radiometer-EOSAquaEarth Observing System, Aqua2002-06-012011-10-04deprecated-90-39.23-18018030.9890-180180Geographic RegionPolar25 km25 km1 dayThese data have been retired and are no longer accessible. However, a more recent version may be available.These data have been retired and are no longer accessible. However, a more recent version of 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/MSFC/AMSR-E 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

BoulderCO80309-0449USAHTTPSHDF-EOS2

This Level-3 gridded product (AE_SI25) includes brightness temperatures at 6.9 through 89.0 GHz and sea ice concentrations.

VIEW RELATED INFORMATIONhttps://nsidc.org/sites/default/files/ae_si25-v003-userguide_2.pdfAMSR-E/Aqua Daily L3 25 km Brightness Temperature & Sea Ice Concentration Polar Grids, Version 3 User GuidePROJECT HOME PAGEhttps://nsidc.org/data/amsre/index.htmlAMSR-E Web site at NSIDCPROJECT HOME PAGEhttps://weather.msfc.nasa.gov/AMSR/NASA AMSR-E Web siteCEOS IDN DIFVERSION 9.92014-07-012026-03-24NSIDCVersion Summary<p>Changes to the Version 3 algorithm for these data include:</p> <ul> <li>Uses Version 3 of the AMSR-E/Aqua L2A Global Swath Spatially-Resampled Brightness Temperatures data as input</li> <li>Improved Antarctic land mask: Includes an updated ice shelf definition created by the National Ice Center Science Department in June 2011, and an updated shoreline developed from ENVISAT and RADARSAT imagery from October 2009 to April 2010. Also, this updated version no longer uses the Level-2A land flag and only uses the updated land mask for surface type classification in the southern hemisphere sea ice concentration algorithm.</li> <li>Inclusion of ISO lineage metadata</li> </ul>NSIDCMinor VersionNSIDCSpatial Reference SystemsEPSG:3411NSIDC Sea Ice Polar Stereographic NorthEPSG:3412NSIDC Sea Ice Polar Stereographic SouthNSIDCLevel of ServiceNo Data AccessNSIDCFull Dataset CitationCavalieri, D. J., Markus, T. & Comiso, J. C. (2014). <i>AMSR-E/Aqua Daily L3 25 km Brightness Temperature & Sea Ice Concentration Polar Grids</i>. (AE_SI25, 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/AMSR-E/AE_SI25.003">https://doi.org/10.5067/AMSR-E/AE_SI25.003</a>. [<i><describe subset used if applicable></i>].NSIDCRetiredtrue