eng; usa UTF8 dataset Near-Real-Time DMSP SSM/I-SSMIS Daily Polar Gridded Sea Ice Concentrations NSIDC User Services National Snow and Ice Data Center none 1 303 492-6199 x CIRES, 449 UCB Boulder CO 80309-0449 USA nsidc@nsidc.org http://nsidc.org pointOfContact 2013-05-18 ISO 19115 Geographic Information - Metadata First Edition ISO 19115:2003 http://nsidc.org/data/nsidc-0081.html Near-Real-Time DMSP SSM/I-SSMIS Daily Polar Gridded Sea Ice Concentrations 1999 publication 1999-01-01 NSIDC-0081 NSIDC DAAC User Services NASA DAAC at the National Snow and Ice Data Center none 1 303 492-6199 National Snow and Ice Data Center Boulder CO 80309-0449 USA nsidc@nsidc.org http://nsidc.org/daac/index.html custodian NSIDC User Services National Snow and Ice Data Center none 1 303 492-6199 National Snow and Ice Data Center Boulder CO 80309-0449 USA nsidc@nsidc.org http://nsidc.org custodian 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. 1999, updated daily. Near-Real-Time DMSP SSM/I-SSMIS Daily Polar Gridded Sea Ice Concentrations. [indicate subset used]. Boulder, Colorado USA: National Snow and Ice Data Center. underDevelopment Jim Maslanik none 1 303 492-6199 National Snow and Ice Data Center Boulder CO 80309 USA nsidc@kryos.colorado.edu principalInvestigator Julienne Stroeve CIRES none National Snow and Ice Data Center Boulder CO 80309 USA stroeve@nsidc.org principalInvestigator Kenneth Knowles National Snow and Ice Data Center none National Snow and Ice Data Center Boulder CO 80309-0449 USA principalInvestigator Walt Meier CIRES none 449 UCB Boulder CO 80309 USA walt@nsidc.org principalInvestigator Donald J. Cavalieri NASA Goddard Space Flight Center none 1 301 614-5901 x NASA/GSFC Greenbelt MD 20771 USA Donald.J.Cavalieri@nasa.gov principalInvestigator NSIDC User Services National Snow and Ice Data Center none 1 303 492-6199 x CIRES, 449 UCB Boulder CO 80309-0449 USA nsidc@nsidc.org pointOfContact asNeeded dataset series attribute NSIDC User Services National Snow and Ice Data Center none 1 303 492-6199 x CIRES, 449 UCB Boulder CO 80309-0449 USA nsidc@nsidc.org http://nsidc.org pointOfContact http://nsidc.org/data/seaice/images/yesterday_nhem.png Most recent sea ice concentration data for the Northern Hemisphere. Sea ice concentration refers to the fraction of ice within each image pixel. This image is color-coded to show varying levels of ice concentration for the Northern Hemisphere. Grey represents land. Pixels with at least 15 percent concentration are classified as sea ice. Pixels with less than 15 percent ice concentration are classified as water. Continent > Antarctica Geographic Region > Arctic Geographic Region > Polar place NASA / GCMD Location Keywords 2008-02-05 revision 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 discipline NASA / GCMD Science Keywords 2008-02-05 revision EOSDIS > Earth Observing System Data Information System ESIP > Earth Science Information Partners Program theme NASA / GCMD Project Keywords 2008-01-24 revision 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 theme otherRestrictions otherRestrictions Access Constraints : 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. eng; usa UTF8 climatologyMeteorologyAtmosphere oceans -180 180 -90 90 20120101 20130516 PNG FTP Binary FTP 102.7 KB Binary FTP 133.3 KB NSIDC DAAC User Services NASA DAAC at the National Snow and Ice Data Center 1 303 492-6199 National Snow and Ice Data Center Boulder CO 80309-0449 USA nsidc@nsidc.org http://nsidc.org/daac/index.html custodian NSIDC User Services National Snow and Ice Data Center 1 303 492-6199 National Snow and Ice Data Center Boulder CO 80309-0449 USA nsidc@nsidc.org http://nsidc.org custodian ftp://sidads.colorado.edu/pub/DATASETS/nsidc0081_nrt_nasateam_seaice/ Data Access URL download http://nsidc.org/data/docs/daac/nsidc0081_ssmi_nrt_seaice.gd.html Documentation URL information onLine FTP SSM/I > Special Sensor Microwave/Imager sensor SSMIS > Special Sensor Microwave Imager/Sounder sensor DMSP 5D-2/F13 > Defense Meteorological Satellite Program-F13 satellite N/A DMSP 5D-2/F15 > Defense Meteorological Satellite Program-F15 satellite N/A DMSP 5D-3/F17 > Defense Meteorological Satellite Program-F17 satellite N/A