<?xml version="1.0" encoding="UTF-8"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-05-16T04:57:50Z</responseDate><request identifier="NSIDC-0422.001" metadataPrefix="dif" verb="GetRecord">http://nsidc.org/api/dataset/metadata/oai</request><GetRecord><record><header><identifier>oai:nsidc.org/NSIDC-0422.001</identifier><datestamp>2026-01-22T20:05:03Z</datestamp><setSpec>v0_daac</setSpec><setSpec>v0_all</setSpec><setSpec>nasa_nsidc_daac</setSpec></header><metadata>
<DIF xmlns="http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/ http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/dif_v9.7.1.xsd"><Entry_ID>NSIDC-0422.001</Entry_ID><Entry_Title>Antarctic 1 km Digital Elevation Model (DEM) from Combined ERS-1 Radar and ICESat Laser Satellite Altimetry</Entry_Title><Data_Set_Citation><Dataset_Creator>Bamber, J. L., Gomez-Dans, J. L. &amp; Griggs, J. A.</Dataset_Creator><Dataset_Title>Antarctic 1 km Digital Elevation Model (DEM) from Combined ERS-1 Radar and ICESat Laser Satellite Altimetry</Dataset_Title><Dataset_Release_Date>2009-12-08</Dataset_Release_Date><Dataset_Release_Place>Boulder, Colorado USA</Dataset_Release_Place><Dataset_Publisher>NASA NSIDC DAAC: NASA National Snow and Ice Data Center Distributed Active Archive Center</Dataset_Publisher><Version>1</Version><Other_Citation_Details><Invert_Citation_Order>false</Invert_Citation_Order></Other_Citation_Details><Dataset_DOI>10.5067/H0FQ1KL9NEKM</Dataset_DOI><Online_Resource>https://nsidc.org/sites/default/files/nsidc-0422-v001-userguide.pdf</Online_Resource><Dataset_Series_Name>NSIDC-0422</Dataset_Series_Name></Data_Set_Citation><Personnel><Role>Investigator</Role><First_Name>Jonathan</First_Name><Middle_Name>L</Middle_Name><Last_Name>Bamber</Last_Name><Email>j.l.bamber@bristol.ac.uk</Email><Contact_Address><Address>Bristol Glaciology Centre</Address><Address>School of Geographical Sciences</Address><Address>University Road</Address><Address>Bristol, BS8 1SS</Address><Address>UNITED KINGDOM</Address><Country/></Contact_Address></Personnel><Personnel><Role>Investigator</Role><First_Name>Jose</First_Name><Middle_Name>Luis</Middle_Name><Last_Name>Gomez-Dans</Last_Name><Contact_Address><Country>UK</Country></Contact_Address></Personnel><Personnel><Role>Investigator</Role><First_Name>Jennifer</First_Name><Middle_Name>A.</Middle_Name><Last_Name>Griggs</Last_Name><Email>j.griggs@bristol.ac.uk</Email><Contact_Address><City>Bristol</City><Postal_Code>BS8 1SS</Postal_Code><Country>UK</Country></Contact_Address></Personnel><Personnel><Role>Technical Contact</Role><First_Name>NSIDC</First_Name><Last_Name>User Services</Last_Name><Email>nsidc@nsidc.org</Email><Phone>1-303-492-6199</Phone><Fax>1-303-492-2468</Fax><Contact_Address><Address>CIRES, 449 UCB</Address><Address>University of Colorado</Address><City>Boulder</City><Province_or_State>CO</Province_or_State><Postal_Code>80309-0449</Postal_Code><Country>USA</Country></Contact_Address></Personnel><Parameters><Category>EARTH SCIENCE</Category><Topic>OCEANS</Topic><Term>COASTAL PROCESSES</Term><Variable_Level_1>COASTAL ELEVATION</Variable_Level_1><Variable_Level_2> </Variable_Level_2><Variable_Level_3> </Variable_Level_3><Detailed_Variable> </Detailed_Variable></Parameters><Parameters><Category>EARTH SCIENCE</Category><Topic>CRYOSPHERE</Topic><Term>GLACIERS/ICE SHEETS</Term><Variable_Level_1>GLACIER ELEVATION/ICE SHEET ELEVATION</Variable_Level_1><Variable_Level_2> </Variable_Level_2><Variable_Level_3> </Variable_Level_3><Detailed_Variable> </Detailed_Variable></Parameters><Parameters><Category>EARTH SCIENCE</Category><Topic>LAND SURFACE</Topic><Term>TOPOGRAPHY</Term><Variable_Level_1>TERRAIN ELEVATION</Variable_Level_1><Variable_Level_2> </Variable_Level_2><Variable_Level_3> </Variable_Level_3><Detailed_Variable> </Detailed_Variable></Parameters><ISO_Topic_Category>Climatology/Meteorology/Atmosphere</ISO_Topic_Category><Keyword>Antarctica</Keyword><Keyword>DEMs Antarctica-project</Keyword><Keyword>DEMs-project</Keyword><Keyword>Digital Elevation Model</Keyword><Keyword>Digital Mapping</Keyword><Keyword>Elevation</Keyword><Keyword>ERS-1</Keyword><Keyword>GLAS</Keyword><Keyword>ICESat/GLAS-related project</Keyword><Keyword>NSIDC</Keyword><Keyword>NSIDC DAAC</Keyword><Keyword>Radar Altimetry</Keyword><Keyword>Terrain Elevation</Keyword><Sensor_Name><Short_Name>GLAS</Short_Name><Long_Name>Geoscience Laser Altimeter System</Long_Name></Sensor_Name><Source_Name><Short_Name>ICESAT</Short_Name><Long_Name>Ice, Cloud, and land Elevation Satellite</Long_Name></Source_Name><Temporal_Coverage><Start_Date>2003-02-20</Start_Date><Stop_Date>2008-03-21</Stop_Date></Temporal_Coverage><Temporal_Coverage><Start_Date>1994-03-01</Start_Date><Stop_Date>1995-01-31</Stop_Date></Temporal_Coverage><Data_Set_Progress>complete</Data_Set_Progress><Spatial_Coverage><Southernmost_Latitude>-86</Southernmost_Latitude><Northernmost_Latitude>-60</Northernmost_Latitude><Westernmost_Longitude>-180</Westernmost_Longitude><Easternmost_Longitude>180</Easternmost_Longitude></Spatial_Coverage><Location><Location_Category>Continent</Location_Category><Location_Type>Antarctica</Location_Type><Location_Subregion1/><Location_Subregion2/><Location_Subregion3/></Location><Data_Resolution><Latitude_Resolution>1 km</Latitude_Resolution><Longitude_Resolution>1 km</Longitude_Resolution></Data_Resolution><Access_Constraints>These data are freely, openly, and fully accessible, provided that you are logged into your NASA Earthdata profile (https://urs.earthdata.nasa.gov/).</Access_Constraints><Use_Constraints>These data are freely, openly, and fully available to use without restrictions, provided that you cite the data according to the recommended citation at https://nsidc.org/about/use_copyright.html. For more information on the NASA EOSDIS Data Use Policy, see https://earthdata.nasa.gov/earth-observation-data/data-use-policy.</Use_Constraints><Data_Set_Language>English</Data_Set_Language><Originating_Center>NASA NSIDC DAAC</Originating_Center><Data_Center><Data_Center_Name><Short_Name>NASA NSIDC DAAC</Short_Name><Long_Name>NASA National Snow and Ice Data Center Distributed Active Archive Center</Long_Name></Data_Center_Name><Data_Center_URL>https://nsidc.org/daac</Data_Center_URL><Personnel><Role>Data Center Contact</Role><First_Name>NSIDC</First_Name><Last_Name>User Services</Last_Name><Email>nsidc@nsidc.org</Email><Phone>1-303-492-6199</Phone><Contact_Address><Address>National Snow and Ice Data Center</Address><Address>CIRES, 449 UCB</Address><Address>University of Colorado</Address><City>Boulder</City><Province_or_State>CO</Province_or_State><Postal_Code>80309-0449</Postal_Code><Country>USA</Country></Contact_Address></Personnel></Data_Center><Distribution><Distribution_Media>FTP</Distribution_Media><Distribution_Size>240 MB</Distribution_Size><Distribution_Format>Binary</Distribution_Format></Distribution><Distribution><Distribution_Media>FTP</Distribution_Media><Distribution_Size>2 KB</Distribution_Size><Distribution_Format>ASCII</Distribution_Format></Distribution><Reference>Bamber, J. L., J. L. Gomez-Dans, and J. A. Griggs. 2009. A New 1 km Digital Elevation Model of the Antarctic Derived from Combined Satellite Radar and Laser Data &#x2013; Part 1: Data and Methods. The Cryosphere, 3, 101-111.

Griggs, J. A. and J. L. Bamber. 2009. A New 1 km Digital Elevation Model of Antarctica Derived from Combined Radar and Laser Data &#x2013; Part 2: Validation and Error Estimates. The Cryosphere, 3, 113&#x2013;123.</Reference><Summary><Abstract>This data set provides a 1 km resolution Digital Elevation Model (DEM) of Antarctica. The DEM combines measurements from the European Remote Sensing Satellite-1 (ERS-1) Satellite Radar Altimeter (SRA) and the Ice, Cloud, and land Elevation Satellite (ICESat) Geosciences Laser Altimeter System (GLAS). The ERS-1 data are from two long repeat cycles of 168 days initiated in March 1994, and the GLAS data are from 20 February 2003 through 21 March 2008. The data set is approximately 240 MB comprised of two gridded binary files and two Environment for Visualizing Images (ENVI) header files viewable using ENVI or other similar software packages. 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