2026-10-10T14:05:36Zhttp://nsidc.org/api/dataset/metadata/oaioai:nsidc.org/G10005.0022026-09-15T18:16:20Zv0_otherv0_allnoaa
G10005.002MASAM2: Daily 4 km Arctic Sea Ice ConcentrationFetterer, F., Stewart, J. S. & Meier, W. N.MASAM2: Daily 4 km Arctic Sea Ice Concentration2023-08-31Boulder, Colorado USANSIDC: National Snow and Ice Data Center2false10.7265/bqd9-vm28https://doi.org/10.7265/bqd9-vm28G10005Technical ContactNSIDCUser Servicesnsidc@nsidc.org1-303-492-61991-303-492-2468CIRES, 449 UCBUniversity of ColoradoBoulderCO80309-0449USAEARTH SCIENCECRYOSPHERESEA ICESEA ICE CONCENTRATION Climatology/Meteorology/AtmosphereSea Ice ConcentrationSea Ice Prediction Network-projectSIPN-projectSIPN sea ice-projectAMSR2Advanced Microwave Scanning Radiometer 2ASCATAdvanced ScatterometerC-SARC-Band Synthetic Aperture RadarRADARRadio Detection and RangingSARSynthetic Aperture RadarSEVIRISpinning Enhanced Visible and Infrared ImagerSSMISSpecial Sensor Microwave Imager/SounderVASVISSR Atmospheric SounderDMSPDefense Meteorological Satellite ProgramGCOM-W1Global Change Observation Mission 1st-WaterGOESNOAA Geostationary Operational Environmental SatellitesMETOP-AMeteorological Operational Satellite - AMSGMeteosat Second GenerationRADARSAT-2SATELLITESSATELLITESSentinel-1ASentinel-1A2012-07-03active29.0890-180180OCEANARCTIC OCEAN4 km4 km1 dayThese data are freely, openly, and fully accessible without restrictions.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/data-use-and-copyright.EnglishNOAANational Oceanic and Atmospheric Administrationhttp://nsidc.org/noaa/Data Center ContactNOAAUser Servicesnsidc@nsidc.org1-303-492-61991-303-492-2468National Snow and Ice Data CenterCIRES, 449 UCBUniversity of ColoradoBoulderCO80309-0449USAHTTPSnetCDF-4HTTPPNGJapan Aerospace Exploration Agency. 2012. AMSR2 Level 3 10 km Sea Ice Concentration. Tokyo, Japan: JAXA.
Japan Aerospace Exploration Agency. 2012. Global Change Observation Mission Water （GCOM - W1）: AMSR2 Higher Level Product Format Specification. Tokyo, Japan: JAXA. http://gcom-w1.jaxa.jp/contents/AMSR2_Higher_Level_Product_Format_EN.pdf
Meier, W. N., F. Fetterer, J. S. Stewart, and S. Helfrich. Accepted. How do sea ice concentrations from operational data compare with passive microwave estimates: Implications for improved model evaluations and forecasting. Ann. Glaciol. 56(69).
National Ice Center and National Snow and Ice Data Center. 2010, updated daily. Multisensor Analyzed Sea Ice Extent - Northern Hemisphere (MASIE-NH). Compiled by F. Fetterer, M. Savoie, S. Helfrich, and P. Clemente-Colón. Boulder, Colorado USA: National Snow and Ice Data Center. http://dx.doi.org/10.7265/N5GT5K3K.
Posey P. G., E. J. Metzger, A. J. Wallcraft, D. A. Hebert, R. A. Allard, O. M. Smedstad, M. W. Phelps, F. Fetterer, J. S. Stewart, W. N. Meier, and S. R. Helfrich. 2015. Improving Arctic sea ice edge forecasts by assimilating high horizontal resolution sea ice concentration data into the US Navy's ice forecast systems. Cryosphere 9: 1735-1745. doi:10.5194/tc-9-1735-2015.
The MASIE-AMSR2 (MASAM2) daily 4 km sea ice concentration is a product that is a blend of two other daily sea ice data products: ice coverage from the Multisensor Analyzed Sea Ice Extent (MASIE) product at a 4 km grid cell size and ice concentration from the Advanced Microwave Scanning Radiometer 2 (AMSR2) at a 10 km grid cell size. MASAM2 was developed to meet a need for greater accuracy and higher resolution in ice concentration fields that are used to initialize an operational sea ice forecast model. By applying some simple rules to blend the two sources, a 4 km concentration product is produced that can be used in the model.VIEW RELATED INFORMATIONhttps://doi.org/10.7265/bqd9-vm28GET DATAhttps://noaadata.apps.nsidc.org/NOAA/G10005_V2/HTTPSCEOS IDN DIFVERSION 9.92023-08-312026-09-15NSIDCVersion SummaryChanged the minimum concentration from 70% to 40%. Also updated the NetCDF files to be CF 1.10 compliant.NSIDCMinor VersionNSIDCCurrent Version1NSIDCLevel of ServiceComprehensiveNSIDCFull Dataset CitationFetterer, F., Stewart, J. S. & Meier, W. N. (2023). <i>MASAM2: Daily 4 km Arctic Sea Ice Concentration</i>. (G10005, Version 2). [Data Set]. Boulder, Colorado USA. National Snow and Ice Data Center. <a href="https://doi.org/10.7265/bqd9-vm28">https://doi.org/10.7265/bqd9-vm28</a>. [<i><describe subset used if applicable></i>].NSIDCRetiredfalse