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	   gmd:Hierarchy_Level_Name:  GLAS/ICESat 500 m Laser Altimetry Digital Elevation Model of Antarctica
	   gmd:Contact:  
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	         gmd:individualName:  NSIDC User Services
	         gmd:organisationName:  National Snow and Ice Data Center
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	   gmd:Date_Stamp:  
	      Date:  2014-08-21
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	   gmd:Metadata_Standard_Version:  ISO 19115:2003
	   gmd:DataSet_URI:  http://nsidc.org/data/nsidc-0304.html
	   gmd:Identification_Information:  
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	         gmd:citation:  
	            gmd:CI_Citation:  
	               gmd:title:  GLAS/ICESat 500 m Laser Altimetry Digital Elevation Model of Antarctica
	               gmd:date:  
	                  gmd:CI_Date:  
	                     gmd:date:  2007
	                     gmd:dateType:  
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	               gmd:editionDate:  
	                  gmd:Date:  2007-06-21
	               gmd:identifier:  NSIDC-0304
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	                     gmd:individualName:  NSIDC DAAC User Services
	                     gmd:organisationName:  NASA DAAC at the National Snow and Ice Data Center
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	                              gmd:voice:  1 303 492-6199 
	                           gmd:address:  
	                              gmd:deliveryPoint:  National Snow and Ice Data Center
	                              gmd:city:  Boulder
	                              gmd:administrativeArea:  CO
	                              gmd:postalCode:  80309-0449
	                              gmd:country:  USA
	                              gmd:electronicMailAddress:  nsidc@nsidc.org
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	                           gmd:address:  
	                              gmd:deliveryPoint:  National Snow and Ice Data Center
	                              gmd:city:  Boulder
	                              gmd:administrativeArea:  CO
	                              gmd:postalCode:  80309-0449
	                              gmd:country:  USA
	                              gmd:electronicMailAddress:  nsidc@nsidc.org
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	         gmd:Abstract:  
	
	            The Geoscience Laser Altimeter System (GLAS) instrument on the Ice, Cloud, and 
	            land Elevation Satellite (ICESat) provides global measurements of elevation, 
	            and repeats measurements along nearly-identical tracks; its primary mission is 
	            to measure changes in ice volume (mass balance) over time. This digital 
	            elevation model (DEM) of Antarctica is derived from GLAS/ICESat laser 
	            altimetry profile data and provides new surface elevation grids of the ice 
	            sheets and coastal areas, with greater latitudinal extent and fewer 
	            slope-related effects than radar altimetry.

This DEM is generated from the 
	            first seven operational periods (from February 2003 through June 2005) of the 
	            GLAS instrument. It is provided on polar stereographic grids at 500 m grid 
	            spacing. The grid covers all of Antarctica north of 86° S. Elevations are 
	            reported as centimeters above the datums, relative to both the WGS 84 
	            ellipsoid and the EGM96 geoid, in two separate elevation data files. A data 
	            quality map of the interpolation distance is distributed in addition to the 
	            elevation data. ENVI header files are also provided.

The data are in 4-byte 
	            (long) signed integer binary files (big endian byte order) and are available 
	            via FTP.
	         gmd:Purpose:  Scientific Research
	         gmd:Credit:  John P. DiMarzio. 2007. GLAS/ICESat 500 m Laser Altimetry Digital Elevation Model of Antarctica. [indicate subset used]. Boulder, Colorado USA: National Snow and Ice Data Center. 
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	            gmd:individualName:  Helen Fricker
	            gmd:organisationName:  Scripps Institution of Oceanography
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	            gmd:contactInfo:  
	               gmd:CI_Contact:  
	                  gmd:address:  
	                     gmd:deliveryPoint:  University of California, San Diego
	                     gmd:city:  La Jolla
	                     gmd:administrativeArea:  California
	                     gmd:postalCode:  92093
	                     gmd:country:  USA
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	            gmd:individualName:  Robert Schutz
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	            gmd:contactInfo:  
	               gmd:CI_Contact:  
	                  gmd:address:  
	                     gmd:deliveryPoint:  GLAS Science Team Lead
	                     gmd:city:  Austin
	                     gmd:administrativeArea:  TX
	                     gmd:postalCode:  78712-1085
	                     gmd:country:  USA
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	         gmd:CI_ResponsibleParty:  
	            gmd:individualName:  Christopher A. Shuman
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	            gmd:individualName:  H. Jay Zwally
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	                     gmd:CI_Telephone:  
	                     gmd:voice:  1 301 614-5643 
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	                     gmd:administrativeArea:  CO
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	      gmd:Descriptive_Keywords:  
	         gmd:MD_Keywords:  
	            gmd:keyword:  Continent > Antarctica
	            gmd:type:  
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	                  gmd:CI_Citation:  
	                     gmd:title:  NASA / GCMD Location Keywords
	                     gmd:date:  
	                        gmd:CI_Date:  
	                           gmd:date:  2008-02-05
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	      gmd:Descriptive_Keywords:  
	         gmd:MD_Keywords:  
	            gmd:keyword:  EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Glacier Elevation/Ice Sheet Elevation
	            gmd:keyword:  EARTH SCIENCE > Terrestrial Hydrosphere > Glaciers/Ice Sheets > Glacier Elevation/Ice Sheet Elevation
	            gmd:type:  
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	                           gmd:date:  2008-02-05
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	            gmd:keyword:  ICESAT > Ice, Cloud and Land Elevation Satellite
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	                     gmd:title:  NASA / GCMD Project Keywords
	                     gmd:date:  
	                        gmd:CI_Date:  
	                           gmd:date:  2008-01-24
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	      gmd:Descriptive_Keywords:  
	         gmd:MD_Keywords:  
	            gmd:keyword:  Altimetry
	            gmd:keyword:  Antarctica
	            gmd:keyword:  Antarctic Ice Sheet
	            gmd:keyword:  Dem
	            gmd:keyword:  Digital Elevation Model
	            gmd:keyword:  Elevation
	            gmd:keyword:  Ice Sheet
	            gmd:keyword:  Ice Sheet Elevation
	            gmd:keyword:  Polar
	            gmd:keyword:  Polar Stereographic
	            gmd:keyword:  South Pole
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