2026-09-06T03:11:20Zhttp://nsidc.org/api/dataset/metadata/oai

oai:nsidc.org/G10016.0032026-08-19T22:15:17Zv0_otherv0_allretirednoaa

G10016.003Near-Real-Time NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice ConcentrationMeier, W. N., Fetterer, F., Windnagel, A. K., Stewart, J. S. & Stafford, T.Near-Real-Time NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration2024-12-18Boulder, Colorado USANSIDC: National Snow and Ice Data Center3false10.7265/j0z0-4h87https://doi.org/10.7265/j0z0-4h87G10016Technical ContactNSIDCUser Servicesnsidc@nsidc.org1-303-492-61991-303-492-2468

CIRES, 449 UCB

University of Colorado

BoulderCO80309-0449USAEARTH SCIENCECRYOSPHERESEA ICESEA ICE CONCENTRATION Climatology/Meteorology/AtmosphereAntarcticArcticGridded DataMultiyear Sea Ice ConcentrationPassive Microwave DataPolar StereographicPolar Stereo Sea Ice-project Sea Ice ConcentrationSea Ice Prediction Network-projectSIPN-projectSIPN sea ice-projectSMMR and SSM/I-SSMIS-related productTotal Sea Ice ConcentrationAMSR2Advanced Microwave Scanning Radiometer 2SSMISSpecial Sensor Microwave Imager/SounderDMSP 5D-3/F17Defense Meteorological Satellite Program-F17GCOM-W1Global Change Observation Mission 1st-Water2025-01-012026-01-15deprecated30.190-180180-90-39.2-180180GEOGRAPHIC REGIONPOLAROCEANARCTIC OCEANGEOGRAPHIC REGIONARCTICOCEANSOUTHERN OCEANEAST ANTARCTIC CONTINENTAL SHELFCONTINENTANTARCTICA25 km25 km1 dayThese data have been retired and are no longer accessible.These data have been retired and are no longer available for use. Cite any prior or planned use of these data according to the recommended citation at https://nsidc.org/about/data-use-and-copyright.EnglishNOAANational Oceanic and Atmospheric Administrationhttp://nsidc.org/noaa/Data Center ContactNOAAUser Servicesnsidc@nsidc.org1-303-492-61991-303-492-2468

National Snow and Ice Data Center

CIRES, 449 UCB

University of Colorado

BoulderCO80309-0449USAHTTPSNetCDFAndersen, S., R. Tonboe, L. Kaleschke, G. Heygster, and L. T. Pedersen. 2007. Intercomparison of Passive Microwave Sea Ice Concentration Retrievals over the High-Concentration Arctic Sea Ice. J. Geophys. Res., 112, C08004, doi:10.1029/2006JC003543. Belchansky, G. I., and D. C. Douglas. 2002. Seasonal Comparisons of Sea Ice Concentration Estimates Derived from SSM/I, OKEAN, and RADARSAT Data. Rem. Sens. Environ., 81: 67-81. Carsey, F. D. (Ed.). 1992. Microwave Remote Sensing of Sea Ice. American Geophysical Union, 462 pp. Cavalieri, D., C. Parkinson, N. DiGirolamo, A. Ivanov (2011). Intersensor calibration between F13 SSM/I and F17 SSMIS for global sea ice data records. IEEE Geosci. Remote Sens. Lett., 9(2), 233-236, doi:10.1109/LGRS.2011.2166754. Cavalieri, D., C. Parkinson, P. Gloersen, J. Comiso, and H. J. Zwally (1999). Deriving Long-term Time Series of Sea Ice Cover from Satellite Passive-microwave Multisensor Data Sets. J. of Geophys. Res., 104(C7):15,803-15,814. Cavalieri, D. J., C. L. Parkinson. 1997. Arctic and Antarctic Sea Ice Concentrations from Multichannel Passive-Microwave Satellite Data Sets: October 1978 - September 1995 - User's Guide. NASA Technical Memorandum 104647. NASA Goddard Space Flight Center, Greenbelt, Maryland. Cavalieri, D. J., P. Gloersen, and W. J. Campbell. 1984. Determination of Sea Ice Parameters with the NIMBUS-7 SMMR. J. Geophys. Res., 89(D4): 5355-5369. Comiso, J. C. (2009). Enhanced Sea Ice Concentrations and Ice Extents from AMSR-E Data. J. Rem. Sens. of Japan, 29(1):199-215. Comiso, J. C., and F. Nishio. 2008. Trends in the Sea Ice Cover Using Enhanced and Compatible AMSR-E, SSM/I, and SMMR Data. J. of Geophys. Res., 113, C02S07, doi:10.1029/2007JC0043257. Comiso, J. C., D. Cavalieri, C. Parkinson, and P. Gloersen. 1997. Passive Microwave Algorithms for Sea Ice Concentrations: A Comparison of Two Techniques. Rem. Sens. of the Environ., 60(3):357-384. Comiso, J. C. 1986. Characteristics of Arctic Winter Sea Ice from Satellite Multispectral Microwave Observations. J. Geophys. Res., 91(C1): 975-994. Eaton B., J. Gregory, H. Centre, B. Drach, K. Taylor, and S. Hankin. 2010. NetCDF Climate and Forecast (CF) Metadata Conventions Version 1.5. Programs for Climate Model Diagnosis and Intercomparison. 81 pp. http://cf-pcmdi.llnl.gov/documents/cf-conventions/1.5/cf-conventions.pdf. Accessed Sep. 2011. Fetterer, F., and N. Untersteiner. 1998. Observations of Melt Ponds on Arctic Sea Ice. J. Geophys. Res., 103(C11): 24, 821-24, 835. Gloersen, P., W. J. Campbell, D. J. Cavalieri, J. C. Comiso, C. L. Parkinson, and H. J. Zwally. 1993. Arctic and Antarctic Sea Ice, 1978-1987: Satellite Passive-Microwave Observations and Analysis. NASA Spec. Publ. 511, 290 pp. Kwok, R. 2002. Sea Ice Concentration Estimates from Satellite Passive Microwave Radiometry and Openings from SAR Ice Motion. Geophys. Res. Lett., 29(9), 1311, doi:10.1029/2002GL014787. Meier, W. N. and the National Center for Atmospheric Research (NCAR) Staff (Eds). 2014. "The Climate Data Guide: Sea Ice Concentration: NOAA/NSIDC Climate Data Record." Retrieved 04 June 2015 from https://climatedataguide.ucar.edu/climate-data/sea-ice-concentration-noaansidc-climate-data-record. Meier, W. N., G. Peng, D. J. Scott, and M. H. Savoie. 2014. Verification of a new NOAA/NSIDC passive microwave sea-ice concentration climate record. Polar Research 33. doi:10.3402/polar.v33.21004. Meier, W. N., M. Savoie, and S. Mallory. 2011, updated 2017. CDR Climate Algorithm and Theoretical Basis Document: Sea Ice Concentration, Rev. 5. ed. F. Fetterer and A. Windnagel. NOAA NCDC CDR Program. Meier, W. N., and S. J. S. Khalsa. 2011. Intersensor Calibration between F13 SSM/I and F17 SSMIS Near-Real-Time Sea Ice Estimates. Geoscience and Remote Sensing 49(9): 3343-3349. Meier, W. N. 2005. Comparison of Passive Microwave Ice Concentration Algorithm Retrievals with AVHRR Imagery in Arctic Peripheral Seas. IEEE Trans. Geosci. Remote Sens., 43(6): 1324-1337. Partington, K., T. Flynn, D. Lamb, C. Bertoia, and K. Dedrick. 2003. Late Twentieth Century Northern Hemisphere Sea-Ice Record from U.S. National Ice Center Ice Charts. J. Geophys. Res. 108(C11): 3343. doi:10.1029/2002JC001623. Peng, G., W. N. Meier, D. J. Scott, and M. H. Savoie. 2013. A long-term and reproducible passive microwave sea ice concentration data record for climate studies and monitoring. Earth Syst. Sci. Data 5: 311-318. doi: 10.5194/essd-5-311-2013. Steffen, K., J. Key, D. J. Cavalieri, J. Comiso, P. Gloersen, K. St. Germain, and I. Rubinstein. 1992. The Estimation of Geophysical Parameters using Passive Microwave Algorithms, in "Microwave Remote Sensing of Sea Ice." F.D. Carsey, ed., American Geophysical Union Monograph 68, Washington, DC:201-231. National Research Council of the National Academies. 2004. Climate Data Records from Environmental Satellites: Interim Report. National Academies Press, Washington, D.C., 150 pp.

As of June 2026, this data set is retired and no longer available for download. This data set provides a near-real-time Climate Data Record (CDR) of sea ice concentration from passive microwave data. The Near-real-time NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration (NRT CDR) data set is the near-real-time version of the final NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration (G02202). The NRT CDR is designed to fill the temporal gap between updates of the final CDR, occurring every three to six months, and to provide the most recent data.

VIEW RELATED INFORMATIONhttps://doi.org/10.7265/j0z0-4h87CEOS IDN DIFVERSION 9.92024-12-182026-08-19NSIDCVersion SummaryThe major change in this version are the following: * Added a prototype AMSR2 sea ice concentration. * Uses the NASA Team 2 land spillover correction instead of the original NASA Team correction. * Improved the Arctic pole hole filling. * Uses a new land mask. * The concentration variable (cdr_seaice_conc) contains concentration values only (no land mask). * Added a separate surface type variable (surface_type_mask). * Improved spatial interpolation of TBs. * Includes the raw NT (raw_nt_seaice_conc) and BT (raw_bt_seaice_conc), maintaining full range of values instead of clipping at 100% for provenance and transparency. * Updated the layout and names of variables, with added netCDF groups for better organization. * Sea ice concentration values below 10% in the CDR are set to 0%. * Fixed a bug in the BT tie points calculations. * Fixed a bug in the one-sided temporal interpolation calculation.NSIDCMinor VersionNSIDCSpatial Reference SystemsEPSG:3411NSIDC Sea Ice Polar Stereographic NorthEPSG:3412NSIDC Sea Ice Polar Stereographic SouthNSIDCLevel of ServiceNo Data AccessNSIDCFull Dataset CitationMeier, W. N., Fetterer, F., Windnagel, A. K., Stewart, J. S. & Stafford, T. (2024). <i>Near-Real-Time NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration</i>. (G10016, Version 3). [Data Set]. Boulder, Colorado USA. National Snow and Ice Data Center. <a href="https://doi.org/10.7265/j0z0-4h87">https://doi.org/10.7265/j0z0-4h87</a>. [<i><describe subset used if applicable></i>].NSIDCRetiredtrue