Identification_Information:
   Dataset_Identifier: G02202

   Citation: 
      Citation_Information: 
         Originator: Meier, W., F. Fetterer, M. Savoie, S. Mallory, R. Duerr, and J. Stroeve. 
         Publication_Date: 20130620
         Title: NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration
         Edition: 2
         Publication_Information: 
            Publication_Place: Boulder, Colorado USA
            Publisher: NSIDC: National Snow and Ice Data Center
         Online_Linkage: http://nsidc.org/data/g02202.html
         Online_Linkage: http://dx.doi.org/10.7265/N55M63M1

   Description: 
      Abstract:
         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 through most recent 
         processing 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.

      Purpose: scientific research
      Documentation: 
         User's_Guide: 
            Citation_Information: 
               Originator: Meier, W., F. Fetterer, M. Savoie, S. Mallory, R. Duerr, and J. Stroeve. 
               Publication_Date: 20130620
               Title: NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration
               Publication_Information: 
                  Publication_Place: Boulder, Colorado USA
                  Publisher: NSIDC: National Snow and Ice Data Center
               Online_Linkage: http://nsidc.org/data/docs/noaa/g02202_ice_conc_cdr/index.html

   Time_Period_of_Content:
      Time_Period_Information:
         Range_of_Dates/Times:
            Beginning_Date: 19781026
            Ending_Date: 20071231
      Currentness_Reference: publication date

   Status:
      Progress: Complete
      Maintenance_and_Update_Frequency: Unknown

   Spatial_Domain:
      Bounding_Coordinates:
         West_Bounding_Coordinate: -180
         East_Bounding_Coordinate: 180
         North_Bounding_Coordinate: 89.84
         South_Bounding_Coordinate: -89.84

   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 > Oceans > Sea Ice > Sea Ice Concentration
      Theme:
         Theme_Keyword_Thesaurus: None
         Theme_Keyword: 
      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:
         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 > Defense Meteorological Satellite Program
         Theme_Keyword: NIMBUS-7
      Theme:
         Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
         Theme_Keyword: climatologyMeteorologyAtmosphere
      Theme:
         Theme_Keyword_Thesaurus: None
         Theme_Keyword: Antarctic
         Theme_Keyword: Arctic
         Theme_Keyword: Gridded Data
         Theme_Keyword: Multiyear Sea Ice Concentration
         Theme_Keyword: Passive Microwave
         Theme_Keyword: Passive Microwave Data
         Theme_Keyword: Passive Microwave Sea Ice Data
         Theme_Keyword: Polar Stereographic
         Theme_Keyword: Sea Ice Concentration
         Theme_Keyword: Total Sea Ice Concentration
      Place:
         Place_Keyword_Thesaurus: NASA Global Change Master Directory (GCMD) Location Keywords
         Place_Keyword: Continent > Antarctica
         Place_Keyword: Geographic Region > Arctic
         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: G02202

   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: NetCDF
         Digital_Transfer_Option:
            Online_Option:
               Computer_Contact_Information:
                  Network_Address:
                     Network_Resource_Name: ftp://sidads.colorado.edu/pub/DATASETS/NOAA/G02202_v2
      Fees: None

Metadata_Reference_Information:
   Metadata_Date: 20131031

   Metadata_Review_Date: 20131031

   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