Identification_Information:
   Dataset_Identifier: NSIDC-0218

   Citation: 
      Citation_Information: 
         Originator: Waleed Abdalati
         Publication_Date: 20080225
         Title: Greenland Ice Sheet Melt Characteristics Derived from Passive Microwave Data
         Publication_Information: 
            Publication_Place: Boulder, Colorado USA
            Publisher: NSIDC: National Snow and Ice Data Center
         Online_Linkage: http://nsidc.org/data/nsidc-0218.html

   Description: 
      Abstract:
         The Greenland ice sheet melt extent data, acquired as part of the NASA Program 
         for Arctic Regional Climate Assessment (PARCA), is a daily (or every other 
         day, prior to August 1987) estimate of the spatial extent of wet snow on the 
         Greenland ice sheet since 1979. It is derived from passive microwave satellite 
         brightness temperature characteristics using the Cross-Polarized Gradient 
         Ratio (XPGR) of Abdalati and Steffen (1997). It is physically based on the 
         changes in microwave emission characteristics observable in data from the 
         Scanning Multi-channel Microwave Radiometer (SMMR) and the Special Sensor 
         Microwave/Imager (SSM/I) instruments when surface snow melts. It is not a 
         direct measure of the snow wetness but rather is a binary indicator of the 
         state of melt of each SMMR and SSM/I pixel on the ice sheet for each day of 
         observation. It is, however, a useful proxy for the amount of melt that occurs 
         on the Greenland ice sheet. The data are provided in a variety of formats 
         including raw data in ASCII format, gridded daily data in binary format, and 
         annual and complete time series climatologies in gridded binary and GeoTIFF 
         format. All data are in a 60 x 109 pixel subset of the standard Northern 
         Hemisphere polar stereographic grid with a 25 km resolution and are available 
         via FTP.

      Purpose: scientific research
      Documentation: 
         User's_Guide: 
            Citation_Information: 
               Originator: Waleed Abdalati
               Publication_Date: 20080225
               Title: Greenland Ice Sheet Melt Characteristics Derived from Passive Microwave Data
               Publication_Information: 
                  Publication_Place: Boulder, Colorado USA
                  Publisher: NSIDC: National Snow and Ice Data Center
               Online_Linkage: http://nsidc.org/data/docs/daac/parca/nsidc0218_greenland_melt_pm/

   Time_Period_of_Content:
      Time_Period_Information:
         Range_of_Dates/Times:
            Beginning_Date: 19790402
            Ending_Date: 20071231
      Currentness_Reference: publication date

   Status:
      Progress: In work
      Maintenance_and_Update_Frequency: Unknown

   Spatial_Domain:
      Bounding_Coordinates:
         West_Bounding_Coordinate: -73
         East_Bounding_Coordinate: -10
         North_Bounding_Coordinate: 84
         South_Bounding_Coordinate: 60

   Keywords:
      Theme:
         Theme_Keyword_Thesaurus: NASA Global Change Master Directory (GCMD) Science Keywords
         Theme_Keyword: EARTH SCIENCE > Cryosphere > Snow/Ice > Snow Melt
         Theme_Keyword: EARTH SCIENCE > Cryosphere > Snow/Ice > Snow Melt
         Theme_Keyword: EARTH SCIENCE > Terrestrial Hydrosphere > Snow/Ice > Snow Melt
         Theme_Keyword: EARTH SCIENCE > Terrestrial Hydrosphere > Snow/Ice > Snow Melt
      Theme:
         Theme_Keyword_Thesaurus: NASA Global Change Master Directory (GCMD) Project Keywords
         Theme_Keyword: PARCA > Program in Arctic Regional Climate Assessment
      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: NIMBUS-7
         Theme_Keyword: SATELLITES
      Theme:
         Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
         Theme_Keyword: geoscientificinformation
         Theme_Keyword: imageryBaseMapsEarthCover
      Theme:
         Theme_Keyword_Thesaurus: None
         Theme_Keyword: Greenland
         Theme_Keyword: Ice Sheet
         Theme_Keyword: PARCA
         Theme_Keyword: Passive Microwave
         Theme_Keyword: Passive Microwave Data
         Theme_Keyword: Polar Stereographic
         Theme_Keyword: SMMR
         Theme_Keyword: Snow Melt
         Theme_Keyword: SSM/I
      Place:
         Place_Keyword_Thesaurus: NASA Global Change Master Directory (GCMD) Location Keywords
         Place_Keyword: Continent > North America > Greenland

   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-0218

   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/parca/nsidc0218_melt/
      Fees: None

   Standard_Order_Process:
      Digital_Form:
         Digital_Transfer_Information:
            Format_Name: ASCII Text (.txt)
         Digital_Transfer_Option:
            Online_Option:
               Computer_Contact_Information:
                  Network_Address:
                     Network_Resource_Name: ftp://sidads.colorado.edu/pub/DATASETS/parca/nsidc0218_melt/
      Fees: None

   Standard_Order_Process:
      Digital_Form:
         Digital_Transfer_Information:
            Format_Name: Geographic Tagged Image File Format (GeoTIFF) (.geotiff)
         Digital_Transfer_Option:
            Online_Option:
               Computer_Contact_Information:
                  Network_Address:
                     Network_Resource_Name: ftp://sidads.colorado.edu/pub/DATASETS/parca/nsidc0218_melt/
      Fees: None

Metadata_Reference_Information:
   Metadata_Date: 20131003

   Metadata_Review_Date: 20131003

   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