NSIDC-0081 Jim Maslanik 19990101 Boulder, Colorado USA NSIDC: National Snow and Ice Data Center http://nsidc.org/data/nsidc-0081.html This data set provides a near-real-time (NRT) map of sea ice concentrations for both the Northern and Southern Hemispheres. The near-real-time passive microwave brightness temperature data are acquired with the Special Sensor Microwave Imager/Sounder (SSMIS) on board the Defense Meteorological Satellite Program (DMSP) F17 satellite. The SSMIS instrument is the next generation Special Sensor Microwave/Imager (SSM/I) instrument. SSMIS data are received daily from the Comprehensive Large Array-data Stewardship System (CLASS) at the National Oceanic and Atmospheric Administration (NOAA) and are gridded onto a polar stereographic grid. Investigators generate sea ice concentrations from these data using the NASA Team algorithm. These data are stored as one-byte flat scaled binary arrays with one byte per pixel, at a resolution of 25 km. For each data file, a corresponding PNG image file is provided. These data are available via FTP for the most recent three to six months and are retained on the FTP site until NSIDC's Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I Passive Microwave Data (preliminary data) become available for the same time period. These data are primarily meant to provide a best estimate of current ice and snow conditions based on information and algorithms available at the time the data are acquired. Near-real-time products are not intended for operational use in assessing sea ice conditions for navigation and should be used with caution in extending the sea ice time series in NSIDC's Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I Passive Microwave Data. scientific research Jim Maslanik 19990101 Boulder, Colorado USA NSIDC: National Snow and Ice Data Center http://nsidc.org/data/docs/daac/nsidc0081_ssmi_nrt_seaice.gd.html 20120101 20130520 publication date In work Unknown -180 180 90 -90 NASA Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > Cryosphere > Sea Ice > Sea Ice Concentration EARTH SCIENCE > Cryosphere > Sea Ice > Sea Ice Concentration EARTH SCIENCE > Oceans > Sea Ice > Sea Ice Concentration EARTH SCIENCE > Oceans > Sea Ice > Sea Ice Concentration NASA Global Change Master Directory (GCMD) Project Keywords EOSDIS > Earth Observing System Data Information System ESIP > Earth Science Information Partners Program NASA Global Change Master Directory (GCMD) Instrument Keywords SSM/I > Special Sensor Microwave/Imager SSMIS > Special Sensor Microwave Imager/Sounder NASA Global Change Master Directory (GCMD) Platform Keywords DMSP 5D-2/F13 > Defense Meteorological Satellite Program-F13 DMSP 5D-2/F15 > Defense Meteorological Satellite Program-F15 DMSP 5D-3/F17 > Defense Meteorological Satellite Program-F17 ISO 19115 Topic Categories climatologyMeteorologyAtmosphere oceans None Antarctic Arctic DMSP Gridded Data Ice Ice Concentration Near Real-time Passive Microwave Polar Polar Stereographic Remote Sensing Sea Ice Sea Ice Concentration SMMR Special Sensor Microwave Imager/Sounder SSM/I SSMIS NASA Global Change Master Directory (GCMD) Location Keywords Continent > Antarctica Geographic Region > Arctic Geographic Region > Polar 4 NASA Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > Cryosphere > Sea Ice > Sea Ice Concentration NASA Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > Cryosphere > Sea Ice > Sea Ice Concentration NASA Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > Oceans > Sea Ice > Sea Ice Concentration NASA Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > Oceans > Sea Ice > Sea Ice Concentration None These data are intended to facilitate time-sensitive research dependent upon precise detection of seasonal polar sea ice formation and break up. These data are primarily meant to provide a best estimate of current ice and snow conditions based on information and algorithms available at the time the data are acquired. Near-real-time products are not intended for operational use in assessing sea ice conditions for navigation and should be used with caution in extending the sea ice time series. For historical SMMR and SSM/I sea ice concentration data, please see Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I Passive Microwave Data. NSIDC User Services National Snow and Ice Data Center mailing

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National Snow and Ice Data Center

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University of Colorado

Boulder CO 80309-0449 USA 1 303 492-6199 1 303 492-2468 nsidc@nsidc.org NSIDC-0081 NSIDC cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NSIDC makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. PNG ftp://sidads.colorado.edu/pub/DATASETS/nsidc0081_nrt_nasateam_seaice/ None Binary ftp://sidads.colorado.edu/pub/DATASETS/nsidc0081_nrt_nasateam_seaice/ None 20121002 20121002 NSIDC User Services National Snow and Ice Data Center mailing

National Snow and Ice Data Center

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University of Colorado

Boulder CO 80309-0449 USA 1 303 492-6199 1 303 492-2468 nsidc@nsidc.org FGDC Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadata FGDC-STD-012-2002