<?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>2026-06-25T22:14:03Z</responseDate><request identifier="GGD606.001" metadataPrefix="dif" verb="GetRecord">http://nsidc.org/api/dataset/metadata/oai</request><GetRecord><record><header><identifier>oai:nsidc.org/GGD606.001</identifier><datestamp>2025-12-03T15:17:12Z</datestamp><setSpec>v0_other</setSpec><setSpec>v0_all</setSpec><setSpec>fgdc</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>GGD606.001</Entry_ID><Entry_Title>Modeled Active-Layer Depth in Russia</Entry_Title><Data_Set_Citation><Dataset_Creator>Nadyozhina, E. D.</Dataset_Creator><Dataset_Title>Modeled Active-Layer Depth in Russia</Dataset_Title><Dataset_Release_Date>2003-01-01</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/pc6m-hs47</Dataset_DOI><Online_Resource>http://nsidc.org/data/docs/fgdc/ggd606_permafrost_russia/index.html</Online_Resource><Dataset_Series_Name>GGD606</Dataset_Series_Name></Data_Set_Citation><Personnel><Role>Investigator</Role><First_Name>Elena K.</First_Name><Last_Name>Molkentin</Last_Name><Email>rsb@main.mgo.rssi.ru</Email><Phone>7- (812) 2478668</Phone><Contact_Address><Address>Karbyshev St.,7</Address><City>St. Petersburg</City><Postal_Code>194021</Postal_Code><Country>Russia</Country></Contact_Address></Personnel><Personnel><Role>Investigator</Role><First_Name>Ekaterina D</First_Name><Last_Name>Nadyozhina</Last_Name><Email>rsb@main.mgo.rssi.ru</Email><Phone>7- (812) 2478668</Phone><Fax>7- (812)2478668</Fax><Contact_Address><Address>Karbyshev St., 7</Address><City>St. Petersburg</City><Postal_Code>194021</Postal_Code><Country>Russia</Country></Contact_Address></Personnel><Parameters><Category>EARTH SCIENCE</Category><Topic>CRYOSPHERE</Topic><Term>FROZEN GROUND</Term><Variable_Level_1>ACTIVE LAYER</Variable_Level_1><Variable_Level_2> </Variable_Level_2><Variable_Level_3> </Variable_Level_3><Detailed_Variable> </Detailed_Variable></Parameters><Keyword>Active Layer Depth</Keyword><Keyword>Climate Change</Keyword><Keyword>Current climate</Keyword><Keyword>Metadata</Keyword><Keyword>Modeling</Keyword><Keyword>Temperature at 10m depth</Keyword><Keyword>Vegetation impact</Keyword><Temporal_Coverage><Start_Date>2003-01-22</Start_Date><Stop_Date>2003-03-04</Stop_Date></Temporal_Coverage><Spatial_Coverage><Southernmost_Latitude>50</Southernmost_Latitude><Northernmost_Latitude>80</Northernmost_Latitude><Westernmost_Longitude>60</Westernmost_Longitude><Easternmost_Longitude>160</Easternmost_Longitude></Spatial_Coverage><Location><Location_Category>Continent</Location_Category><Location_Type>Europe</Location_Type><Location_Subregion1>Eastern Europe</Location_Subregion1><Location_Subregion2>Russia</Location_Subregion2><Location_Subregion3/><Detailed_Location>West and East Siberia</Detailed_Location></Location><Data_Set_Language>English</Data_Set_Language><Data_Center><Data_Center_Name><Short_Name>FGDC</Short_Name><Long_Name>Frozen Ground Data Center</Long_Name></Data_Center_Name><Data_Center_URL>http://nsidc.org/fgdc/</Data_Center_URL><Personnel><Role>Data Center Contact</Role><First_Name>FGDC</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>GIF</Distribution_Format></Distribution><Distribution><Distribution_Media>FTP</Distribution_Media><Distribution_Format>ASCII</Distribution_Format></Distribution><Reference>Malevsky-Malevich, S.P., E.K. Molkentin, E.D. Nadyozhina, and O.B. Shklyarevich. 2001. Numerical simulation of permafrost parameters distribution in Russia. Cold Regions Science and Technology 32:1-11.

Malevsky-Malevich, S.P., E.K. Molkentin, E.D. Nadyozhina, V.V. Simonov, and O.B. Shklyarevich. 2000. Model calculations of permafrost development and silt season thawing layer distribution under the current climate in the North regions of West Siberia. Earth Cryosphere 4(4).</Reference><Summary><Abstract>This data set contains modeled active-layer depth (cm) from 50 deg N to 80 deg N, and 60 deg E to 160 deg E, Russia. Depth values are calculated from a model of current climate that assumes a complex surface with inhomogenous vegetation and soil texture, and from a model of projected climate for the year 2050 that assumes uniform vegetation and soil. Tab-delimited ASCII text files contain active-layer depth values (cm) with corresponding latitudes and longitudes in decimal degrees. Maps of active-layer depth (cm) are in GIF image format. Data are available via FTP.</Abstract></Summary><Related_URL><URL_Content_Type><Type>VIEW RELATED INFORMATION</Type></URL_Content_Type><URL>http://nsidc.org/data/docs/fgdc/ggd606_permafrost_russia/index.html</URL><Description>Documentation</Description></Related_URL><Related_URL><URL_Content_Type><Type>GET DATA</Type></URL_Content_Type><URL>ftp://sidads.colorado.edu/pub/DATASETS/fgdc/ggd606_permafrost_russia/</URL><Description>FTP</Description></Related_URL><Metadata_Name>CEOS IDN DIF</Metadata_Name><Metadata_Version>VERSION 9.9</Metadata_Version><DIF_Creation_Date>2003-01-01</DIF_Creation_Date><Last_DIF_Revision_Date>2025-12-03</Last_DIF_Revision_Date><Extended_Metadata><Metadata><Group>NSIDC</Group><Name>Version Summary</Name><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>Basic</Level></Value></Metadata><Metadata><Group>NSIDC</Group><Name>Full Dataset Citation</Name><Value>Nadyozhina, E. D. (2003). &lt;i&gt;Modeled Active-Layer Depth in Russia&lt;/i&gt;. (GGD606, Version 1). [Data Set]. Boulder, Colorado USA. National Snow and Ice Data Center. &lt;a href="https://doi.org/10.7265/pc6m-hs47"&gt;https://doi.org/10.7265/pc6m-hs47&lt;/a&gt;. [&lt;i&gt;&lt;describe subset used if applicable&gt;&lt;/i&gt;].</Value></Metadata><Metadata><Group>NSIDC</Group><Name>Retired</Name><Value>false</Value></Metadata><Metadata><Group>NSIDC</Group><Name>Related Services</Name><Value><umm-s><meta><format>application/vnd.nasa.cmr.umm+json</format><deleted>false</deleted><user-id>jroebuck</user-id><native-id>mmt_service_12556</native-id><concept-id>S1962622169-NSIDCV0</concept-id><provider-id>NSIDCV0</provider-id><revision-id>5</revision-id><concept-type>service</concept-type><revision-date>2023-04-25T21:20:48.786Z</revision-date></meta><umm><URL><URLValue>ftp://sidads.colorado.edu/</URLValue></URL><Name>NSIDCV0_FTP</Name><Type>NOT PROVIDED</Type><Version>1</Version><LongName>FTP File System</LongName><Description>Download data via FTP using an FTP client, command line utility or a script, e.g., Python</Description><RelatedURLs><RelatedURL><URL>https://nsidc.org/data/user-resources/help-center/how-access-data-using-ftp-client-command-line-wget-or-python</URL><Type>VIEW RELATED INFORMATION</Type><Description>FTP Access Guide</Description><URLContentType>PublicationURL</URLContentType></RelatedURL></RelatedURLs><ContactGroups><ContactGroup><Roles><Role>USER SERVICES</Role></Roles><GroupName>NSIDC User Services</GroupName><ContactInformation><ContactMechanisms><ContactMechanism><Type>Email</Type><Value>nsidc@nsidc.org</Value></ContactMechanism></ContactMechanisms></ContactInformation></ContactGroup></ContactGroups><ServiceKeywords><ServiceKeyword><ServiceTerm>DATA ACCESS/RETRIEVAL</ServiceTerm><ServiceTopic>DATA MANAGEMENT/DATA HANDLING</ServiceTopic><ServiceCategory>EARTH SCIENCE SERVICES</ServiceCategory></ServiceKeyword></ServiceKeywords><VersionDescription>This is the most current release of this service. Last updated date is unknown.</VersionDescription><ServiceOrganizations><ServiceOrganization><Roles><Role>SERVICE PROVIDER</Role></Roles><LongName>National Snow and Ice Data Center</LongName><ShortName>NSIDC</ShortName><OnlineResource><Name>National Snow and Ice Data Center home page</Name><Linkage>https://nsidc.org/</Linkage><Description>National Snow and Ice Data Center home page.</Description></OnlineResource></ServiceOrganization></ServiceOrganizations><MetadataSpecification><URL>https://cdn.earthdata.nasa.gov/umm/service/v1.4</URL><Name>UMM-S</Name><Version>1.4</Version></MetadataSpecification></umm></umm-s><nsidc><URLValue>ftp://sidads.colorado.edu/pub/DATASETS/fgdc/ggd606_permafrost_russia/</URLValue></nsidc></Value></Metadata></Extended_Metadata></DIF>
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