eng; usa UTF8 dataset Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data 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 2013-05-23 ISO 19115 Geographic Information - Metadata First Edition ISO 19115:2003 http://nsidc.org/data/nsidc-0051.html Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data 1996 publication 1996-01-01 NSIDC-0051 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 is generated from brightness temperature data derived from the following sensors: the Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR), the Defense Meteorological Satellite Program (DMSP) -F8, -F11 and -F13 Special Sensor Microwave/Imagers (SSM/Is), and the DMSP-F17 Special Sensor Microwave Imager/Sounder (SSMIS). The data are provided in the polar stereographic projection at a grid cell size of 25 x 25 km. This product is designed to provide a consistent time series of sea ice concentrations (the fraction, or percentage, of ocean area covered by sea ice) spanning the coverage of several passive microwave instruments. To aid in this goal, sea ice algorithm coefficients are changed to reduce differences in sea ice extent and area as estimated using the SMMR and SSM/I sensors. The data are generated using the NASA Team algorithm developed by the Oceans and Ice Branch, Laboratory for Hydrospheric Processes at NASA Goddard Space Flight Center (GSFC). These data include gridded daily (every other day for SMMR data) and monthly averaged sea ice concentrations for both the north and south polar regions. Two types of data are provided: final data and preliminary data. Final data are produced at GSFC about once per year, with roughly a one-year latency, and include data since 26 October 1978. Final data are produced from SMMR brightness temperature data processed at NASA GSFC and from SSM/I and SSMIS brightness temperature data processed at the National Snow and Ice Data Center (NSIDC). Preliminary data are produced at NSIDC approximately every three months (quarterly) using SSM/I data acquired from Remote Sensing Systems, Inc. (RSS), and include roughly the most recent three to twelve months of processed data. Data are scaled and stored as one-byte integers in flat binary arrays. For each data file, a corresponding PNG browse image file is provided. Data are available via FTP. These data are offered free of charge. You may use these data freely, provided that you cite NSIDC as the source, and provide an acknowledgment in any published papers. While the final and preliminary data are reasonably consistent, the particular type of data used for any publication, presentation, or other application should be clearly stated. Scientific Research Cavalieri, D., C. Parkinson, P. Gloersen, and H. J. Zwally. 1996, updated yearly. Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data. [indicate subset used]. Boulder, Colorado USA: National Snow and Ice Data Center. underDevelopment 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 Claire L. Parkinson none 1 301 614-5715 Laboratory for Hydrospheric Processes Greenbelt MD 20771 USA clairep@neptune.gsfc.nasa.gov principalInvestigator Per Gloersen none 1 301 614-5710 Laboratory for Hydrospheric Processes Greenbelt MD 20771 USA per.gloersen@gsfc.nasa.gov principalInvestigator H. Jay Zwally NASA/Goddard Space Flight Center none 1 301 614-5643 Laboratory for Hydrospheric Processes Greenbelt MD 20771 USA Jay.Zwally@nasa.gov 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 Walt Meier CIRES none 449 UCB Boulder CO 80309 USA walt@nsidc.org principalInvestigator F. Fetterer CIRES none 449 UCB Boulder CO 80309 USA fetterer@nsidc.org principalInvestigator Kenneth Knowles National Snow and Ice Data Center none National Snow and Ice Data Center Boulder CO 80309-0449 USA principalInvestigator Matthew Savoie National Snow and Ice Data Center none CIRES, 449 UCB Boulder CO 80309-0449 USA savoie@nsidc.org principalInvestigator Mary J. Brodzik National Snow and Ice Data Center none National Snow and Ice Data Center Boulder CO 80309-0449 USA brodzik@nsidc.org principalInvestigator 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 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 > 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 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 Brightness Temperature DMSP EOSDIS Gridded Data Ice Multiyear Sea Ice Concentration NIMBUS-7 NSIDC DAAC Passive Microwave Polar Polar Stereographic Polynyas Remote Sensing Sea Ice Sea Ice Concentration SMMR SSM/I SSMIS theme otherRestrictions otherRestrictions Access Constraints : none Use Constraints : none eng; usa UTF8 climatologyMeteorologyAtmosphere oceans -180 180 -90 90 19781001 20111231 Binary FTP 102.7 KB Binary FTP 133.3 KB PNG FTP 300 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/nsidc0051_gsfc_nasateam_seaice/ Data Access URL download http://nsidc.org/data/docs/daac/nsidc0051_gsfc_seaice.gd.html Documentation URL information onLine 102.7 B FTP SMMR > Scanning Multichannel Microwave Radiometer sensor SSM/I > Special Sensor Microwave/Imager sensor SSMIS > Special Sensor Microwave Imager/Sounder sensor DMSP 5D-2/F11 > Defense Meteorological Satellite Program-F11 satellite N/A DMSP 5D-2/F13 > Defense Meteorological Satellite Program-F13 satellite N/A DMSP 5D-2/F8 > Defense Meteorological Satellite Program-F8 satellite N/A DMSP 5D-3/F17 > Defense Meteorological Satellite Program-F17 satellite N/A NIMBUS-7 satellite N/A