Identification_Information:
   Dataset_Identifier: NSIDC-0051

   Citation: 
      Citation_Information: 
         Originator: Cavalieri, D. J., C. L. Parkinson, P. Gloersen, and H. Zwally. 
         Publication_Date: 19960101
         Title: Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data
         Publication_Information: 
            Publication_Place: Boulder, Colorado USA
            Publisher: NSIDC DAAC: NASA DAAC at the National Snow and Ice Data Center
         Online_Linkage: http://nsidc.org/data/nsidc-0051.html

   Description: 
      Abstract:
         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. 
         The data are produced at GSFC about once per year, with roughly a one-year 
         latency, and include data since 26 October 1978. 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).

         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.

      Purpose: scientific research
      Documentation: 
         User's_Guide: 
            Citation_Information: 
               Originator: Cavalieri, D. J., C. L. Parkinson, P. Gloersen, and H. Zwally. 
               Publication_Date: 19960101
               Title: Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data
               Publication_Information: 
                  Publication_Place: Boulder, Colorado USA
                  Publisher: NSIDC DAAC: NASA DAAC at the National Snow and Ice Data Center
               Online_Linkage: http://nsidc.org/data/docs/daac/nsidc0051_gsfc_seaice.gd.html

   Time_Period_of_Content:
      Time_Period_Information:
         Range_of_Dates/Times:
            Beginning_Date: 19781001
            Ending_Date: 20130930
      Currentness_Reference: publication date

   Status:
      Progress: In work
      Maintenance_and_Update_Frequency: Unknown

   Spatial_Domain:
      Bounding_Coordinates:
         West_Bounding_Coordinate: -180
         East_Bounding_Coordinate: 180
         North_Bounding_Coordinate: 90
         South_Bounding_Coordinate: -90

   Keywords:
      Theme:
         Theme_Keyword_Thesaurus: NASA Global Change Master Directory (GCMD) Science Keywords
         Theme_Keyword: EARTH SCIENCE > Cryosphere > Sea Ice > Sea Ice Concentration
         Theme_Keyword: EARTH SCIENCE > Cryosphere > Sea Ice > Sea Ice Concentration
         Theme_Keyword: EARTH SCIENCE > Cryosphere > Sea Ice > Sea Ice Concentration
         Theme_Keyword: EARTH SCIENCE > Cryosphere > Sea Ice > Sea Ice Concentration
         Theme_Keyword: EARTH SCIENCE > Oceans > Sea Ice > Sea Ice Concentration
         Theme_Keyword: EARTH SCIENCE > Oceans > Sea Ice > Sea Ice Concentration
         Theme_Keyword: EARTH SCIENCE > Oceans > Sea Ice > Sea Ice Concentration
         Theme_Keyword: EARTH SCIENCE > Oceans > Sea Ice > Sea Ice Concentration
      Theme:
         Theme_Keyword_Thesaurus: NASA Global Change Master Directory (GCMD) Project Keywords
         Theme_Keyword: EOSDIS > Earth Observing System Data Information System
         Theme_Keyword: ESIP > Earth Science Information Partners Program
      Theme:
         Theme_Keyword_Thesaurus: NASA Global Change Master Directory (GCMD) Instrument Keywords
         Theme_Keyword: SMMR > Scanning Multichannel Microwave Radiometer
         Theme_Keyword: SSM/I > Special Sensor Microwave/Imager
         Theme_Keyword: SSMIS > Special Sensor Microwave Imager/Sounder
      Theme:
         Theme_Keyword_Thesaurus: NASA Global Change Master Directory (GCMD) Platform Keywords
         Theme_Keyword: DMSP 5D-2/F11 > Defense Meteorological Satellite Program-F11
         Theme_Keyword: DMSP 5D-2/F13 > Defense Meteorological Satellite Program-F13
         Theme_Keyword: DMSP 5D-2/F8 > Defense Meteorological Satellite Program-F8
         Theme_Keyword: DMSP 5D-3/F17 > Defense Meteorological Satellite Program-F17
         Theme_Keyword: NIMBUS-7
      Theme:
         Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
         Theme_Keyword: climatologyMeteorologyAtmosphere
         Theme_Keyword: oceans
      Theme:
         Theme_Keyword_Thesaurus: None
         Theme_Keyword: Antarctic
         Theme_Keyword: Arctic
         Theme_Keyword: Brightness Temperature
         Theme_Keyword: DMSP
         Theme_Keyword: EOSDIS
         Theme_Keyword: Gridded Data
         Theme_Keyword: Ice
         Theme_Keyword: Multiyear Sea Ice Concentration
         Theme_Keyword: NIMBUS-7
         Theme_Keyword: NSIDC DAAC
         Theme_Keyword: Passive Microwave
         Theme_Keyword: Polar
         Theme_Keyword: Polar Stereographic
         Theme_Keyword: Polynyas
         Theme_Keyword: Remote Sensing
         Theme_Keyword: Sea Ice
         Theme_Keyword: Sea Ice Concentration
         Theme_Keyword: SMMR
         Theme_Keyword: SSM/I
         Theme_Keyword: SSMIS
      Place:
         Place_Keyword_Thesaurus: NASA Global Change Master Directory (GCMD) Location Keywords
         Place_Keyword: Geographic Region > Polar

   Access_Constraints: None

   Use_Constraints: None

   Point_of_Contact:
      Contact_Information:
         Contact_Person_Primary:
            Contact_Person: NSIDC User Services
            Contact_Organization: National Snow and Ice Data Center
         Contact_Address:
            Address_Type: mailing
            Address: CIRES, 449 UCB
            Address: University of Colorado
            City: Boulder
            State_or_Province: CO
            Postal_Code: 80309-0449
            Country: USA
         Contact_Voice_Telephone: 1 303 492-6199 x
         Contact_Facsimile_Telephone: 1 303  492-2468 x
         Contact_Electronic_Mail_Address: nsidc@nsidc.org

Distribution_Information:
   Distributor:
      Contact_Information:
         Contact_Organization_Primary:
            Contact_Organization: National Snow and Ice Data Center
            Contact_Person: NSIDC User Services
         Contact_Address:
            Address_Type: mailing
            Address: National Snow and Ice Data Center
            Address: CIRES, 449 UCB
            Address: University of Colorado
            City: Boulder
            State_or_Province: CO
            Postal_Code: 80309-0449
            Country: USA
         Contact_Voice_Telephone: 1 303 492-6199 
         Contact_Facsimile_Telephone: 1 303  492-2468 
         Contact_Electronic_Mail_Address: nsidc@nsidc.org

   Resource_Description: NSIDC-0051

   Distribution_Liability:
      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.

   Standard_Order_Process:
      Digital_Form:
         Digital_Transfer_Information:
            Format_Name: Binary
         Digital_Transfer_Option:
            Online_Option:
               Computer_Contact_Information:
                  Network_Address:
                     Network_Resource_Name: ftp://sidads.colorado.edu/pub/DATASETS/nsidc0051_gsfc_nasateam_seaice/
      Fees: None


   Standard_Order_Process:
      Digital_Form:
         Digital_Transfer_Information:
            Format_Name: PNG
         Digital_Transfer_Option:
            Online_Option:
               Computer_Contact_Information:
                  Network_Address:
                     Network_Resource_Name: ftp://sidads.colorado.edu/pub/DATASETS/nsidc0051_gsfc_nasateam_seaice/
      Fees: None

Metadata_Reference_Information:
   Metadata_Date: 20140211

   Metadata_Review_Date: 20140211

   Metadata_Contact: 
      Contact_Information:
         Contact_Person_Primary:
            Contact_Person: NSIDC User Services
            Contact_Organization: National Snow and Ice Data Center
         Contact_Address:
            Address_Type: mailing
            Address: National Snow and Ice Data Center
            Address: CIRES, 449 UCB
            Address: University of Colorado
            City: Boulder
            State_or_Province: CO
            Postal_Code: 80309-0449
            Country: USA
         Contact_Voice_Telephone: 1 303 492-6199 
         Contact_Facsimile_Telephone: 1 303  492-2468 
         Contact_Electronic_Mail_Address: nsidc@nsidc.org

   Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadata

   Metadata_Standard_Version: FGDC-STD-012-2002