<?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>2026-03-14T14:11:33Z</responseDate><request metadataPrefix="dif" identifier="G10033.001" verb="GetRecord">http://nsidc.org/api/dataset/metadata/oai</request><GetRecord><record><header><identifier>oai:nsidc.org/G10033.001</identifier><datestamp>2026-01-26T20:17:01Z</datestamp><setSpec>v0_other</setSpec><setSpec>v0_all</setSpec><setSpec>noaa</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>G10033.001</Entry_ID><Entry_Title>U.S. National Ice Center Arctic and Antarctic Sea Ice Concentration and Climatologies in Gridded Format</Entry_Title><Data_Set_Citation><Dataset_Creator>U.S. National Ice Center (Fetterer, F. &amp; Stewart, J. S. (Comps.))</Dataset_Creator><Dataset_Title>U.S. National Ice Center Arctic and Antarctic Sea Ice Concentration and Climatologies in Gridded Format</Dataset_Title><Dataset_Release_Date>2020-12-29</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>10.7265/46cc-3952</Dataset_DOI><Online_Resource>https://doi.org/10.7265/46cc-3952</Online_Resource><Dataset_Series_Name>G10033</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>CRYOSPHERE</Topic><Term>SEA ICE</Term><Variable_Level_1>SEA ICE CONCENTRATION</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>Sea Ice Prediction Network-project</Keyword><Keyword>SIPN ice thickness-project</Keyword><Keyword>SIPN-project</Keyword><Keyword>SIPN sea ice-project</Keyword><Sensor_Name><Short_Name>SAR</Short_Name><Long_Name>Synthetic Aperture Radar</Long_Name></Sensor_Name><Sensor_Name><Short_Name>VISIBLE SPECTROMETER</Short_Name></Sensor_Name><Source_Name><Short_Name>SATELLITES</Short_Name><Long_Name>SATELLITES</Long_Name></Source_Name><Temporal_Coverage><Start_Date>2003-01-06</Start_Date></Temporal_Coverage><Data_Set_Progress>active</Data_Set_Progress><Spatial_Coverage><Southernmost_Latitude>-90</Southernmost_Latitude><Northernmost_Latitude>-19</Northernmost_Latitude><Westernmost_Longitude>-180</Westernmost_Longitude><Easternmost_Longitude>180</Easternmost_Longitude></Spatial_Coverage><Spatial_Coverage><Southernmost_Latitude>19</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><Location><Location_Category>CONTINENT</Location_Category><Location_Type>ANTARCTICA</Location_Type></Location><Data_Resolution><Latitude_Resolution>10 km</Latitude_Resolution><Longitude_Resolution>10 km</Longitude_Resolution><Temporal_Resolution>7 day</Temporal_Resolution></Data_Resolution><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>NetCDF</Distribution_Format></Distribution><Distribution><Distribution_Media>FTP</Distribution_Media><Distribution_Format>GeoTIFF</Distribution_Format></Distribution><Distribution><Distribution_Media>FTP</Distribution_Media><Distribution_Format>Shapefile</Distribution_Format></Distribution><Reference/><Summary><Abstract>Notice: Due to funding limitations, this data set was recently changed to a &#x201C;Basic&#x201D; Level of Service. Learn more about what this means for users and how you can share your story here: &lt;a href="https://nsidc.org/data/user-resources/data-announcements/user-notice-level-service-update-data-products"&gt;Level of Service Update for Data Products&lt;/a&gt;.&lt;br&gt;&lt;br&gt;
Weekly sea ice concentration charts from the U.S. National Ice Center (USNIC) along with total ice concentration, multiyear ice concentration, first-year ice concentration, thin ice concentration, and fast ice extent. In addition, there are also period-of-record, 5-year and 10-year climatological averages.</Abstract></Summary><Related_URL><URL_Content_Type><Type>VIEW RELATED INFORMATION</Type></URL_Content_Type><URL>https://doi.org/10.7265/46cc-3952</URL></Related_URL><Related_URL><URL_Content_Type><Type>GET DATA</Type></URL_Content_Type><URL>https://noaadata.apps.nsidc.org/NOAA/G10033/</URL><Description>HTTPS</Description></Related_URL><Metadata_Name>CEOS IDN DIF</Metadata_Name><Metadata_Version>VERSION 9.9</Metadata_Version><DIF_Creation_Date>2020-12-29</DIF_Creation_Date><Last_DIF_Revision_Date>2026-01-26</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>EPSG:6931</SRID><Description>WGS 84 / NSIDC EASE-Grid 2.0 North</Description></Spatial_Reference_System><Spatial_Reference_System><SRID>EPSG:6932</SRID><Description>WGS 84 / NSIDC EASE-Grid 2.0 South</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>U.S. National Ice Center. (2020). &lt;i&gt;U.S. National Ice Center Arctic and Antarctic Sea Ice Concentration and Climatologies in Gridded Format&lt;/i&gt;. (G10033, Version 1). Fetterer, F. &amp; Stewart, J. S. (Comps.) [Data Set]. Boulder, Colorado USA. National Snow and Ice Data Center. &lt;a href="https://doi.org/10.7265/46cc-3952"&gt;https://doi.org/10.7265/46cc-3952&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_32962</native-id><concept-id>S2721063021-NSIDCV0</concept-id><provider-id>NSIDCV0</provider-id><revision-id>1</revision-id><concept-type>service</concept-type><revision-date>2023-06-27T14:22:11.750Z</revision-date></meta><umm><URL><URLValue>https://noaadata.apps.nsidc.org/</URLValue></URL><Name>NSIDCV0_NOAA_Data_HTTPS_File_System</Name><Type>NOT PROVIDED</Type><Version>1</Version><LongName>NOAA@NSIDC HTTPS File System</LongName><Description>Access and download NOAA@NSIDC data using a web browser, or through a command line utility such as WGET, or using programming languages such as R or Python.</Description><RelatedURLs><RelatedURL><URL>https://nsidc.org/data/user-resources/help-center/how-access-and-download-noaansidc-data</URL><Type>VIEW RELATED INFORMATION</Type><Description>NOAA@NSIDC HTTPS 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.</VersionDescription><ServiceOrganizations><ServiceOrganization><Roles><Role>AUTHOR</Role><Role>DEVELOPER</Role><Role>PUBLISHER</Role><Role>SERVICE PROVIDER</Role></Roles><LongName>National Oceanic and Atmospheric Administration at the National Snow and Ice Data Center</LongName><ShortName>NSIDC_NOAA</ShortName></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>https://noaadata.apps.nsidc.org/NOAA/G10033/</URLValue></nsidc></Value></Metadata></Extended_Metadata></DIF>
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