<?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>2026-10-27T04:20:41Z</responseDate><request identifier="NSIDC-0426.001" metadataPrefix="dif" verb="GetRecord">http://nsidc.org/api/dataset/metadata/oai</request><GetRecord><record><header><identifier>oai:nsidc.org/NSIDC-0426.001</identifier><datestamp>2026-09-10T20:21:56Z</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-0426.001</Entry_ID><Entry_Title>AMSRIce03 Sea Ice Thickness Data</Entry_Title><Data_Set_Citation><Dataset_Creator>Sturm, M. &amp; Stroeve, J.</Dataset_Creator><Dataset_Title>AMSRIce03 Sea Ice Thickness Data</Dataset_Title><Dataset_Release_Date>2009-10-22</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>10.5067/2HF4AB0KG9DK</Dataset_DOI><Online_Resource>https://doi.org/10.5067/2HF4AB0KG9DK</Online_Resource><Dataset_Series_Name>NSIDC-0426</Dataset_Series_Name></Data_Set_Citation><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>SALINITY/DENSITY</Term><Variable_Level_1>CONDUCTIVITY</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>SEA ICE</Term><Variable_Level_1>ICE DEPTH/THICKNESS</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>SEA ICE</Term><Variable_Level_1>SALINITY</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>SEA ICE</Term><Variable_Level_1>SNOW DEPTH</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>AMSR-E</Keyword><Keyword>AMSR-E Validation</Keyword><Keyword>AMSR-E Validation-project</Keyword><Keyword>AMSRIce03</Keyword><Keyword>Arctic Sea Ice</Keyword><Keyword>Conductivity</Keyword><Keyword>DAAC</Keyword><Keyword>Ice Thickness</Keyword><Keyword>NSIDC</Keyword><Keyword>NSIDC DAAC</Keyword><Keyword>Ocean Water Salinity</Keyword><Keyword>Sea Ice</Keyword><Keyword>Snow Depth On Sea Ice</Keyword><Keyword>Snow On Sea Ice</Keyword><Sensor_Name><Short_Name>CONDUCTIVITY METERS</Short_Name><Long_Name>CONDUCTIVITY METERS</Long_Name></Sensor_Name><Source_Name><Short_Name>GROUND-BASED OBSERVATIONS</Short_Name><Long_Name>GROUND-BASED OBSERVATIONS</Long_Name></Source_Name><Temporal_Coverage><Start_Date>2003-03-09</Start_Date><Stop_Date>2003-03-21</Stop_Date></Temporal_Coverage><Data_Set_Progress>complete</Data_Set_Progress><Spatial_Coverage><Southernmost_Latitude>72.9</Southernmost_Latitude><Northernmost_Latitude>72.95</Northernmost_Latitude><Westernmost_Longitude>-147.65</Westernmost_Longitude><Easternmost_Longitude>-147.5</Easternmost_Longitude></Spatial_Coverage><Spatial_Coverage><Southernmost_Latitude>71.18</Southernmost_Latitude><Northernmost_Latitude>71.28</Northernmost_Latitude><Westernmost_Longitude>-156.4</Westernmost_Longitude><Easternmost_Longitude>-156.15</Easternmost_Longitude></Spatial_Coverage><Location><Location_Category>CONTINENT</Location_Category><Location_Type>NORTH AMERICA</Location_Type><Location_Subregion1>UNITED STATES OF AMERICA</Location_Subregion1><Location_Subregion2>ALASKA</Location_Subregion2></Location><Location><Location_Category>OCEAN</Location_Category><Location_Type>ARCTIC OCEAN</Location_Type><Location_Subregion1>BEAUFORT SEA</Location_Subregion1></Location><Project><Short_Name>AMSR-E VAL</Short_Name><Long_Name>AMSR-E Validation</Long_Name></Project><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&#xA0;https://nsidc.org/about/data-use-and-copyright. For more information on the NASA ESDIS Data Use Guidance, see&#xA0;https://www.earthdata.nasa.gov/engage/open-data-services-software-policies/data-use-guidance.</Use_Constraints><Data_Set_Language>English</Data_Set_Language><Originating_Center>DOD/USARMY/USACE/ERDC/CRREL</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>HTTPS</Distribution_Media><Distribution_Size>101 KB</Distribution_Size><Distribution_Format>ASCII</Distribution_Format></Distribution><Reference>Refer to the AMSRIce03 Web site for in-depth information on the science mission and goal of the AMSRIce03 project.</Reference><Summary><Abstract>Notice to Data Users: The documentation for this data set was provided solely by the Principal Investigator(s) and was not further developed, thoroughly reviewed, or edited by NSIDC. Thus, support for this data set may be limited. This data set contains ice thickness measurements collected over sea ice in the Barrow, Alaska area and at the Navy Ice Camp in the main pack ice of the Arctic Ocean as part of the joint in situ and aircraft AMSRIce03 campaign conducted in March 2003.</Abstract></Summary><Related_URL><URL_Content_Type><Type>VIEW RELATED INFORMATION</Type></URL_Content_Type><URL>https://doi.org/10.5067/2HF4AB0KG9DK</URL><Description>User's Guide</Description></Related_URL><Related_URL><URL_Content_Type><Type>GET DATA</Type></URL_Content_Type><URL>https://daacdata.apps.nsidc.org/pub/DATASETS/AVDM/data/cryosphere/AMSRIce03/ground_data/ice_thickness/</URL><Description>HTTPS</Description></Related_URL><Metadata_Name>CEOS IDN DIF</Metadata_Name><Metadata_Version>VERSION 9.9</Metadata_Version><DIF_Creation_Date>2009-10-22</DIF_Creation_Date><Last_DIF_Revision_Date>2026-09-10</Last_DIF_Revision_Date><Extended_Metadata><Metadata><Group>NSIDC</Group><Name>Version Summary</Name><Value>Initial release</Value></Metadata><Metadata><Group>NSIDC</Group><Name>Minor Version</Name><Value/></Metadata><Metadata><Group>NSIDC</Group><Name>Current Version</Name><Value>1</Value></Metadata><Metadata><Group>NSIDC</Group><Name>Spatial Reference Systems</Name><Value><Spatial_Reference_System><SRID>N/A</SRID><Description>N/A</Description></Spatial_Reference_System></Value></Metadata><Metadata><Group>NSIDC</Group><Name>Level of Service</Name><Value><Level>Basic</Level></Value></Metadata><Metadata><Group>NSIDC</Group><Name>Full Dataset Citation</Name><Value>Sturm, M. &amp; Stroeve, J. 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