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<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>G01962.001</Entry_ID><Entry_Title>Environmental Working Group Joint U.S.-Russian Arctic Sea Ice Atlas</Entry_Title><Data_Set_Citation><Dataset_Creator>Environmental Working Group (Tanis, F. &amp; Smolyanitsky, V. (Eds.))</Dataset_Creator><Dataset_Title>Environmental Working Group Joint U.S.-Russian Arctic Sea Ice Atlas</Dataset_Title><Dataset_Release_Date>2000-01-01</Dataset_Release_Date><Dataset_Release_Place>Boulder, Colorado USA</Dataset_Release_Place><Dataset_Publisher>NSIDC: National Snow and Ice Data Center</Dataset_Publisher><Version>1</Version><Other_Citation_Details><Invert_Citation_Order>false</Invert_Citation_Order></Other_Citation_Details><Dataset_DOI>10.7265/N5C82766</Dataset_DOI><Online_Resource>https://doi.org/10.7265/N5C82766</Online_Resource><Dataset_Series_Name>G01962</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 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</Variable_Level_3><Detailed_Variable> </Detailed_Variable></Parameters><ISO_Topic_Category>Climatology/Meteorology/Atmosphere</ISO_Topic_Category><ISO_Topic_Category>Oceans</ISO_Topic_Category><Keyword>Arctic</Keyword><Keyword>Arctic Ocean</Keyword><Keyword>Climate</Keyword><Keyword>Climatology</Keyword><Keyword>Cryosphere</Keyword><Keyword>EWG-Atlas-project</Keyword><Keyword>EWG-project</Keyword><Keyword>Hydrosphere</Keyword><Keyword>ICE BREAKERS</Keyword><Keyword>Ice Extent</Keyword><Keyword>Ice Form</Keyword><Keyword>ICE STATIONS</Keyword><Keyword>Ice Surveys</Keyword><Keyword>Ice Thickness Distribution</Keyword><Keyword>NOAA</Keyword><Keyword>NSIDC</Keyword><Keyword>Ocean</Keyword><Keyword>Satellites</Keyword><Keyword>Sea Ice</Keyword><Keyword>Sea Ice Age</Keyword><Keyword>SEA ICE  CONCENTRATION</Keyword><Keyword>Sea Ice Motion</Keyword><Keyword>Sea Ice Observations and Charts-project</Keyword><Keyword>Snow Cover</Keyword><Keyword>Submarines</Keyword><Keyword>Upward Looking Sonar</Keyword><Keyword>Visual Observations</Keyword><Sensor_Name><Short_Name>UPWARD LOOKING SONAR</Short_Name></Sensor_Name><Sensor_Name><Short_Name>VISIBLE SPECTROMETER</Short_Name></Sensor_Name><Sensor_Name><Short_Name>VISUAL OBSERVATIONS</Short_Name><Long_Name>VISUAL OBSERVATIONS</Long_Name></Sensor_Name><Source_Name><Short_Name>AIRCRAFT</Short_Name><Long_Name>AIRCRAFT</Long_Name></Source_Name><Source_Name><Short_Name>GROUND-BASED OBSERVATIONS</Short_Name><Long_Name>GROUND-BASED OBSERVATIONS</Long_Name></Source_Name><Source_Name><Short_Name>SATELLITES</Short_Name><Long_Name>SATELLITES</Long_Name></Source_Name><Source_Name><Short_Name>SHIPS</Short_Name></Source_Name><Source_Name><Short_Name>SUBMARINE</Short_Name></Source_Name><Temporal_Coverage><Start_Date>1950-01-01</Start_Date><Stop_Date>1994-12-31</Stop_Date></Temporal_Coverage><Data_Set_Progress>complete</Data_Set_Progress><Spatial_Coverage><Southernmost_Latitude>45</Southernmost_Latitude><Northernmost_Latitude>90</Northernmost_Latitude><Westernmost_Longitude>-180</Westernmost_Longitude><Easternmost_Longitude>180</Easternmost_Longitude></Spatial_Coverage><Location><Location_Category>GEOGRAPHIC REGION</Location_Category><Location_Type>ARCTIC</Location_Type></Location><Data_Resolution><Longitude_Resolution>Varies</Longitude_Resolution><Temporal_Resolution>Varies</Temporal_Resolution></Data_Resolution><Access_Constraints>These data are freely, openly, and fully accessible without restrictions.</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.</Use_Constraints><Data_Set_Language>English</Data_Set_Language><Data_Center><Data_Center_Name><Short_Name>NOAA</Short_Name><Long_Name>National Oceanic and Atmospheric Administration</Long_Name></Data_Center_Name><Data_Center_URL>http://nsidc.org/noaa/</Data_Center_URL><Personnel><Role>Data Center Contact</Role><First_Name>NOAA</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>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_Format>Binary</Distribution_Format></Distribution><Distribution><Distribution_Media>FTP</Distribution_Media><Distribution_Format>ASCII</Distribution_Format></Distribution><Reference/><Summary><Abstract>The Environmental Working Group Joint U.S.-Russian Arctic Sea Ice Atlas is part of the &lt;a href="https://nsidc.org/data/ewg"&gt;NOAA@NSIDC Environmental Working Group (EWG) Atlases&lt;/a&gt; data collection.
The EWG Joint U.S.-Russian Arctic Sea Ice Atlas was developed by U.S. and Russian partners in the late 1990s. It is based on observations collected over the period 1950 through 1994 from satellite data, ice stations, icebreakers, and airborne ice surveys. Additionally, U.S. submarines operating in the Arctic over the period from 1977 through 1993 collected data used for a previously classified ice climatology. The Atlas contains four main sections: an introduction to Arctic sea ice, a section that describes primary sea ice data sets and analysis methods, a section with a graphical atlas containing two-dimensional color-coded ice charts and graphical products, and an Arctic sea ice data section. Note: The Russian chart component of this product has been replaced and updated by &lt;a href="https://nsidc.org/data/g02176/versions/1"&gt;Sea Ice Charts of the Russian Arctic in Gridded Format, 1933-2006&lt;/a&gt; and the U.S chart component by &lt;a href="https://nsidc.org/data/g02172/versions/1"&gt;National Ice Center Arctic Sea Ice Charts and Climatologies in Gridded Format, 1972-2007&lt;/a&gt; and &lt;a href="https://nsidc.org/data/g10033/versions/1"&gt;U.S. National Ice Center Arctic and Antarctic Sea Ice Concentration and Climatologies in Gridded Format&lt;/a&gt;.</Abstract></Summary><Related_URL><URL_Content_Type><Type>VIEW RELATED INFORMATION</Type></URL_Content_Type><URL>https://doi.org/10.7265/N5C82766</URL><Description>Documentation</Description></Related_URL><Related_URL><URL_Content_Type><Type>GET DATA</Type></URL_Content_Type><URL>https://noaadata.apps.nsidc.org/NOAA/G01962/</URL><Description>HTTPS</Description></Related_URL><Related_URL><URL_Content_Type><Type>PROJECT HOME PAGE</Type></URL_Content_Type><URL>http://nsidc.org/noaa/ewg/index.html</URL><Description>The Environmental Working Group Arctic Atlases on CD-ROM Overview</Description></Related_URL><Related_URL><URL_Content_Type><Type>VIEW RELATED INFORMATION</Type></URL_Content_Type><URL>http://nsidc.org/data/G01938.html</URL><Description>Arctic Climatology Project - EWG Arctic Meteorology and Climate Atlas</Description></Related_URL><Related_URL><URL_Content_Type><Type>VIEW RELATED INFORMATION</Type></URL_Content_Type><URL>http://nsidc.org/cryosphere/arctic-meteorology/</URL><Description>All About Arctic Climatology and Meteorology</Description></Related_URL><Related_URL><URL_Content_Type><Type>VIEW RELATED INFORMATION</Type></URL_Content_Type><URL>http://nsidc.org/data/G01961.html</URL><Description>Environmental Working Group: Joint U.S.-Russian Atlas of the Arctic Ocean</Description></Related_URL><Related_URL><URL_Content_Type><Type>VIEW RELATED INFORMATION</Type></URL_Content_Type><URL>http://nsidc.org/data/g02176.html</URL><Description>Sea Ice Charts of the Russian Arctic in Gridded Format, 1933-2006</Description></Related_URL><Related_URL><URL_Content_Type><Type>PROJECT HOME PAGE</Type></URL_Content_Type><URL>http://nsidc.org/data/g02172.html</URL><Description>National Ice Center Arctic Sea Ice Charts and Climatologies in Gridded Format</Description></Related_URL><Related_URL><URL_Content_Type><Type>PROJECT HOME PAGE</Type></URL_Content_Type><URL>http://nsidc.org/data/seaice/</URL><Description>Sea Ice Products at NSIDC</Description></Related_URL><Related_URL><URL_Content_Type><Type>PROJECT HOME PAGE</Type></URL_Content_Type><URL>http://nsidc.org/noaa/gdsidb/</URL><Description>Global Digital Sea Ice Data Bank (GDSIDB)</Description></Related_URL><IDN_Node><Short_Name>USA/NOAA</Short_Name></IDN_Node><Metadata_Name>CEOS IDN DIF</Metadata_Name><Metadata_Version>VERSION 9.9</Metadata_Version><DIF_Creation_Date>2000-01-01</DIF_Creation_Date><Last_DIF_Revision_Date>2026-03-03</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>Level of Service</Name><Value><Level>Standard</Level></Value></Metadata><Metadata><Group>NSIDC</Group><Name>Full Dataset Citation</Name><Value>Environmental Working Group. (2000). &lt;i&gt;Environmental Working Group Joint U.S.-Russian Arctic Sea Ice Atlas&lt;/i&gt;. (G01962, Version 1). Tanis, F. &amp; Smolyanitsky, V. (Eds.) [Data Set]. Boulder, Colorado USA. National Snow and Ice Data Center. &lt;a href="https://doi.org/10.7265/N5C82766"&gt;https://doi.org/10.7265/N5C82766&lt;/a&gt;. 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