eng; usa UTF8 dataset NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration 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 2013-05-25 ISO 19115 Geographic Information - Metadata First Edition ISO 19115:2003 http://nsidc.org/data/g02202.html NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration 2011 publication 2011-09-20 G02202 http://dx.doi.org/10.7265/N5B56GN3 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 NSIDC NOAA User Services NSIDC National Oceanic and Atmospheric Administration none 1 303 492-6199 National Snow and Ice Data Center Boulder CO 80309-0449 USA nsidc@nsidc.org http://nsidc.org/noaa/ custodian This data set provides a Climate Data Record (CDR) of sea ice concentration from passive microwave data. It provides a consistent, daily and monthly time series of sea ice concentrations from 09 July 1987 through 31 December 2007 for both the north and south polar regions on a 25 km x 25 km grid. The NOAA/NSIDC CDR is based on the recommendations from the National Research Council (NRC) (2004). It is produced from gridded brightness temperatures from the Defense Meteorological Satellite Program (DMSP) series of Special Sensor Microwave Imager (SSM/I) passive microwave radiometers: F-8, F-11, and F-13. The NOAA/NSIDC CDR sea ice concentrations are an estimate of the fraction of ocean area covered by sea ice that is produced by combining concentration estimates created using two algorithms developed at the NASA Goddard Space Flight Center (GSFC): the NASA Team algorithm (Cavalieri et al., 1984) and the Bootstrap algorithm (Comiso, 1986). NSIDC applies the individual algorithms to brightness temperature data from Remote Sensing Systems, Inc. (RSS). The data are gridded on the NSIDC polar stereographic grid with 25 x 25 km grid cells and are available in netCDF file format. Each file includes four different sea ice concentration variables: a variable with the primary CDR sea ice concentrations created by NSIDC and three variables with sea ice concentrations created by Goddard. The three Goddard-produced sea ice concentrations are the Goddard NASA Team algorithm sea ice concentrations, the Goddard Bootstrap sea ice concentrations, and a merged version of the two sea ice concentrations. These Goddard-produced sea ice concentrations are included in the data files for a number of reasons. First, the merged Goddard NASA Team/Bootstrap sea ice concentrations are an ancillary data set that is analogous to the NOAA/NSIDC CDR data but that adds late 1978 through mid 1987 data to the record. A different instrument, the Scanning Multichannel Microwave Radiometer (SMMR), was the source for the brightness temperatures from this period. Sea ice concentrations from the extended period are not part of the primary NSIDC-produced CDR record because complete documentation of the SMMR brightness temperature processing method is not available. Second, the separate Goddard NASA Team and Bootstrap sea ice concentrations are provided for reference. Variables containing standard deviation, quality flags, and projection information are also included in the netCDF files. Scientific Research Meier, W., F. Fetterer, M. Savoie, S. Mallory, R. Duerr, and J. Stroeve. 2011. NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration. [indicate subset used]. Boulder, Colorado USA: National Snow and Ice Data Center. http://dx.doi.org/10.7265/N5B56GN3. complete 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 Ruth Duerr Cooperative Institute for Research in Environmental Sciences, CU Boulder none 1 303 735-0136 x 449 University of Colorado at Boulder Boulder Colorado 80027 USA rduerr@nsidc.org principalInvestigator Julienne Stroeve CIRES none National Snow and Ice Data Center Boulder CO 80309 USA stroeve@nsidc.org principalInvestigator Matthew Savoie National Snow and Ice Data Center none CIRES, 449 UCB Boulder CO 80309-0449 USA savoie@nsidc.org principalInvestigator Sean Mallory CIRES none Boulder CO USA sean.mallory@nsidc.com 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 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 > Oceans > Sea Ice > Sea Ice Concentration discipline NASA / GCMD Science Keywords 2008-02-05 revision theme None 2008-01-24 revision Antarctic Arctic Gridded Data Multiyear Sea Ice Concentration Passive Microwave Passive Microwave Data Passive Microwave Sea Ice Data Polar Stereographic Sea Ice Concentration Total Sea Ice Concentration theme otherRestrictions otherRestrictions Access Constraints : none Use Constraints : none eng; usa UTF8 climatologyMeteorologyAtmosphere -180 180 -89.84 89.84 19781026 20071231 NetCDF FTP 1.8 - 3.5 MB 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 NSIDC NOAA User Services NSIDC National Oceanic and Atmospheric Administration 1 303 492-6199 National Snow and Ice Data Center Boulder CO 80309-0449 USA nsidc@nsidc.org http://nsidc.org/noaa/ custodian ftp://sidads.colorado.edu/pub/DATASETS/NOAA/G02202/ Data Access URL download http://nsidc.org/data/docs/noaa/g02202_ice_conc_cdr/index.html Documentation URL information onLine 1.8 MB FTP SMMR > Scanning Multichannel Microwave Radiometer sensor SSM/I > Special Sensor Microwave/Imager sensor DMSP > Defense Meteorological Satellite Program satellite N/A 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 NIMBUS-7 satellite N/A