2026-04-21T13:19:35Zhttp://nsidc.org/api/dataset/metadata/oaioai:nsidc.org/NSIDC-0192.0032026-03-03T21:04:46Zv0_daacv0_allnasa_nsidc_daac
NSIDC-0192.003Sea Ice Trends and Climatologies from SMMR and SSM/I-SSMISStroeve, J. & Meier, W. N.Sea Ice Trends and Climatologies from SMMR and SSM/I-SSMIS2018-04-19Boulder, Colorado USANASA NSIDC DAAC: NASA National Snow and Ice Data Center Distributed Active Archive Center3false10.5067/IJ0T7HFHB9Y6https://nsidc.org/sites/default/files/documents/user-guide/nsidc-0192-v003-userguide_0.pdfNSIDC-0192Technical ContactNSIDCUser Servicesnsidc@nsidc.org1-303-492-61991-303-492-2468CIRES, 449 UCBUniversity of ColoradoBoulderCO80309-0449USAEARTH SCIENCECRYOSPHERESEA ICEICE EXTENT EARTH SCIENCECRYOSPHERESEA ICESEA ICE CONCENTRATION Climatology/Meteorology/AtmospherePolar Stereo Sea Ice-project Sea Ice PM Trends-projectSMMR and SSM/I-SSMIS-projectsmmr-ssmi-projectSMMR/SSMIS Polar Stereo Ancillary-projectESMRElectrically Scanning Microwave RadiometerSMMRScanning Multichannel Microwave RadiometerSSM/ISpecial Sensor Microwave/ImagerSSMISSpecial Sensor Microwave Imager/SounderDMSP 5D-2/F11Defense Meteorological Satellite Program-F11DMSP 5D-2/F13Defense Meteorological Satellite Program-F13DMSP 5D-2/F15Defense Meteorological Satellite Program-F15DMSP 5D-2/F8Defense Meteorological Satellite Program-F8DMSP 5D-3/F17Defense Meteorological Satellite Program-F17Nimbus-5Nimbus-7Nimbus-71978-10-262022-12-31active30.9890-180180-90-39.23-180180OCEANSOUTHERN OCEANROSS SEAOCEANATLANTIC OCEANNORTH ATLANTIC OCEANCONTINENTNORTH AMERICACANADAHUDSON BAYOCEANSOUTHERN OCEANBELLINGSHAUSEN SEAGEOGRAPHIC REGIONPOLARGEOGRAPHIC REGIONARCTICCONTINENTANTARCTICAOCEANSOUTHERN OCEANWEDDELL SEAOCEANPACIFIC OCEANOCEANINDIAN OCEANOCEANARCTIC OCEAN25 km25 kmVariesPlease note that these products may not contain the most recent data; therefore, you should use caution, particularly with the ocean masks and sea ice climatologies, which may not be representative of ice cover conditions outside of the time period used to produce the products.These data are freely, openly, and fully accessible, provided that you are logged into your NASA Earthdata profile (https://urs.earthdata.nasa.gov/).These data are freely, openly, and fully available to use without restrictions, provided that you cite the data according to the recommended citation at https://nsidc.org/about/use_copyright.html. For more information on the NASA EOSDIS Data Use Policy, see https://earthdata.nasa.gov/earth-observation-data/data-use-policy.EnglishNASA NSIDC DAACNASA 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 ColoradoBoulderCO80309-0449USAHTTPSPNGHTTPSBinaryHTTPSJPEGHTTPSASCIIComiso J. C. and F. Nishio. 2008. Trends in the Sea Ice Cover Using Enhanced and Compatible AMSR-E, SSM/I, and SMMR Data. Journal of Geophysical Research 113(C02S07), doi:10.1029/2007JC004257.
Cavalieri, D. J., and C. L. Parkinson. 2008. Antarctic Sea Ice Variability and Trends, 1979–2006. J. Geophys. Res. 113(C07004). doi:10.1029/2007JC004564.
Cavalieri, D. J., C. L. Parkinson, and K. Y. Vinnikov. 2003. 30-Year Satellite Record Reveals Contrasting Arctic and Antarctic Decadal Sea Ice Variability. Geophysical Research Letters 30(18), doi:10.1029/2003GL018031.
Comiso, J. C. et al. 1997. Passive Microwave Algorithms for Sea Ice Concentration: A Comparison of Two Techniques. Remote Sensing of the Environment 60(3).
Dedrick, K. R., K. Partington, M. Van Woert, C. A. Bertoia, and D. Benner. 2001. U.S. National/Navy Ice Center Digital Sea Ice Data and Climatology. Canadian Journal of Remote Sensing 27:457-475.
Parkinson C. L. and J. C. Comiso. 2008. Antarctic Sea Ice Parameters from AMSR-E Data Using Two Techniques and Comparisons with Sea Ice from SSM/I. Journal of Geophysical Research 113(C02S06), doi:10.1029/2007JC004253.
Parkinson, C. L. and Cavalieri, D. J. 2012. Antarctic Sea Ice Variability and Trends, 1979–2010. The Cryosphere Discuss. 6:931-956. doi:10.5194/tcd-6-931-2012.
Parkinson, C. L., D. J. Cavalieri, P. Gloersen, H. J. Zwally, and J. C. Comiso.1999. Arctic Sea Ice Extents, Areas, and Trends. 1978–1996. J. Geophys. Res.104(C9):20837–20856. doi:10.1029/1999JC900082.
Ropelewski, C. F. 1983. Spatial and Temporal Variations in Antarctic Sea Ice (1973-82). Journal of Climate and Applied Meteorology 22:470-473.NSIDC provides this data set to aid investigations of variability and trends in sea ice cover. Ice cover in these data are indicated by sea ice concentration: the percentage of the ocean surface covered by ice. The ice-covered area indicates how much ice is present; it is the total surface area of a pixel multiplied by the ice concentration in that pixel. Ice persistence is the percentage of months over the data set time period that ice existed at a location. The ice extent indicates whether ice is present; here, ice is considered to exist in a pixel if the sea ice concentration exceeds 15 percent. This data set provides users with data about total ice-covered areas, sea ice extent, ice persistence, and monthly climatologies of sea ice concentrations.VIEW RELATED INFORMATIONhttps://nsidc.org/sites/default/files/documents/user-guide/nsidc-0192-v003-userguide_0.pdfSea Ice Trends and Climatologies from SMMR and SSM/I-SSMIS, Version 3 User GuideGET DATAhttps://daacdata.apps.nsidc.org/pub/DATASETS/nsidc0192_seaice_trends_climo_v3/HTTPSCEOS IDN DIFVERSION 9.92018-04-192026-03-03NSIDCVersion Summary<p>Changes to this version include: </p>
<ul>
<li>Incorporated a change from Version 2 to Version 3 of the Bootstrap data set. For V3 Bootstrap data, the concentration record was re-calculated for the entire period of the data set, 1978 through current processing. The most impactful changes were a lowering of the threshold to 10% for ice extent, and the recalculation of the algorithm’s tie points every day. However, despite the new 10% threshold for Bootstrap input data, this Sea Ice Trends and Climatologies data set continues to be derived using a 15% threshold.</li>
</ul>NSIDCMinor Version3.1The input data stream now includes the Bootstrap Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS v3.1 files (updated from v3.0). This difference caused changes in all daily and monthly Bootstrap values. Users should expect to see a 1-3% increase in ice area and extent fields. Users should refer to the Bootstrap Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS documentation for details of the algorithm update.1978-10-261NSIDCCurrent Version1NSIDCSpatial Reference SystemsEPSG:3411NSIDC Sea Ice Polar Stereographic NorthEPSG:3412NSIDC Sea Ice Polar Stereographic SouthNSIDCLevel of ServiceComprehensiveNSIDCFull Dataset CitationStroeve, J. & Meier, W. N. (2018). <i>Sea Ice Trends and Climatologies from SMMR and SSM/I-SSMIS</i>. (NSIDC-0192, 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/IJ0T7HFHB9Y6">https://doi.org/10.5067/IJ0T7HFHB9Y6</a>. [<i><describe subset used if applicable></i>].NSIDCRetiredfalseNSIDCRelated Servicesapplication/vnd.nasa.cmr.umm+jsonfalseamyygillilandmmt_service_12717S1977897447-NSIDCV0NSIDCV06service2025-04-01T22:12:52.112Zhttps://daacdata.apps.nsidc.org/NSIDCV0_DAAC_Data_HTTPS_File_SystemNOT PROVIDED1HTTPS File SystemQuickly download a few files using a web browser, or access the data through a command-line utility such as WGET.https://nsidc.org/data/user-resources/help-center/programmatic-access-guide-data-daacdataappsVIEW RELATED INFORMATIONProgrammatic Data Access GuidePublicationURLUSER SERVICESNSIDC DAAC User ServicesEmailnsidc@nsidc.orgDATA ACCESS/RETRIEVALDATA MANAGEMENT/DATA HANDLINGEARTH SCIENCE SERVICESThis is the most current release of this service.DEVELOPERORIGINATORPUBLISHERSERVICE PROVIDERNASA National Snow and Ice Data Center Distributed Active Archive CenterNASA NSIDC DAACNASA Distributed Active Archive Center (DAAC) at NSIDChttps://nsidc.org/daacNSIDC DAAC Home Pagehttps://cdn.earthdata.nasa.gov/umm/service/v1.4UMM-S1.4https://daacdata.apps.nsidc.org/pub/DATASETS/nsidc0192_seaice_trends_climo_v3/