<?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>2026-05-21T05:00:18Z</responseDate><request identifier="IDCSI2.001" metadataPrefix="dif" verb="GetRecord">http://nsidc.org/api/dataset/metadata/oai</request><GetRecord><record><header><identifier>oai:nsidc.org/IDCSI2.001</identifier><datestamp>2026-05-05T20:15:47Z</datestamp><setSpec>cumulus</setSpec><setSpec>ecs</setSpec><setSpec>retired</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>IDCSI2.001</Entry_ID><Entry_Title>IceBridge Sea Ice Freeboard, Snow Depth, and Thickness</Entry_Title><Data_Set_Citation><Dataset_Creator>Kurtz, N., Studinger, M., Harbeck, J., Onana, V. &amp; Farrell, S. L.</Dataset_Creator><Dataset_Title>IceBridge Sea Ice Freeboard, Snow Depth, and Thickness</Dataset_Title><Dataset_Release_Date>2012-03-02</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>10.5067/7XJ9HRV50O57</Dataset_DOI><Online_Resource>https://nsidc.org/sites/default/files/idcsi2_pdf.pdf</Online_Resource><Dataset_Series_Name>IDCSI2</Dataset_Series_Name></Data_Set_Citation><Personnel><Role>Investigator</Role><First_Name>Nathan</First_Name><Last_Name>Kurtz</Last_Name><Email>nathan.t.kurtz@nasa.gov</Email><Contact_Address><City>Greenbelt</City><Province_or_State>MD</Province_or_State><Postal_Code>20771</Postal_Code><Country>USA</Country></Contact_Address></Personnel><Personnel><Role>Investigator</Role><First_Name>Michael</First_Name><Last_Name>Studinger</Last_Name><Email>michael.studinger@nasa.gov</Email><Contact_Address><City>Greenbelt</City><Province_or_State>MD</Province_or_State><Postal_Code>USA</Postal_Code><Country>USA</Country></Contact_Address></Personnel><Personnel><Role>Investigator</Role><First_Name>Jeremy</First_Name><Last_Name>Harbeck</Last_Name><Email>jeremy.p.harbeck@nasa.gov</Email><Contact_Address><City>Greenbelt</City><Province_or_State>MD</Province_or_State><Postal_Code>20771</Postal_Code><Country/></Contact_Address></Personnel><Personnel><Role>Investigator</Role><First_Name>Vincent-De-Paul</First_Name><Last_Name>Onana</Last_Name><Email>vincentdepaul.onana@nasa.gov</Email><Contact_Address><City>Greenbelt</City><Province_or_State>MD</Province_or_State><Postal_Code>20771</Postal_Code><Country>USA</Country></Contact_Address></Personnel><Personnel><Role>Investigator</Role><First_Name>Sinead</First_Name><Middle_Name>L.</Middle_Name><Last_Name>Farrell</Last_Name><Email>sinead.l.farrell@nasa.gov</Email><Contact_Address><City>Greenbelt</City><Province_or_State>MD</Province_or_State><Postal_Code>20771</Postal_Code><Country>USA</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>CRYOSPHERE</Topic><Term>SEA ICE</Term><Variable_Level_1>FREEBOARD</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 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</Variable_Level_3><Detailed_Variable> </Detailed_Variable></Parameters><Parameters><Category>EARTH SCIENCE</Category><Topic>OCEANS</Topic><Term>SEA ICE</Term><Variable_Level_1>SEA ICE 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>OCEANS</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><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>Geoscientific Information</ISO_Topic_Category><Keyword>Elevation</Keyword><Keyword>IB Derived Products-project	</Keyword><Keyword>IceBridge</Keyword><Keyword>IceBridge-project</Keyword><Keyword>Ice Thickness</Keyword><Keyword>NASA</Keyword><Keyword>NSIDC</Keyword><Keyword>NSIDC DAAC</Keyword><Keyword>Sea Ice Surface Elevation</Keyword><Keyword>Snow Depth On Sea Ice</Keyword><Keyword>Surface Elevation</Keyword><Keyword>Surface Roughness</Keyword><Sensor_Name><Short_Name>ATM</Short_Name><Long_Name>Airborne Topographic Mapper</Long_Name></Sensor_Name><Sensor_Name><Short_Name>CAMBOT</Short_Name><Long_Name>Continuous Airborne Mapping By Optical Translator</Long_Name></Sensor_Name><Sensor_Name><Short_Name>DMS</Short_Name><Long_Name>Digital Mapping System</Long_Name></Sensor_Name><Sensor_Name><Short_Name>Snow Radar</Short_Name><Long_Name>Wide-band Snow Depth Radar</Long_Name></Sensor_Name><Source_Name><Short_Name>DC-8</Short_Name><Long_Name>Douglas DC-8</Long_Name></Source_Name><Source_Name><Short_Name>P-3B</Short_Name><Long_Name>Lockheed P-3B Orion</Long_Name></Source_Name><Temporal_Coverage><Start_Date>2009-10-21</Start_Date><Stop_Date>2012-04-10</Stop_Date></Temporal_Coverage><Data_Set_Progress>deprecated</Data_Set_Progress><Spatial_Coverage><Southernmost_Latitude>-90</Southernmost_Latitude><Northernmost_Latitude>-53</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><Vertical_Resolution>40 m</Vertical_Resolution><Temporal_Resolution>Varies</Temporal_Resolution></Data_Resolution><Quality>For details on data quality, see Sea Ice Thickness, Freeboard, and Snow Depth Products from Operation IceBridge Airborne Data (Kurtz et al. 2013).</Quality><Data_Set_Language>English</Data_Set_Language><Originating_Center>NASA/GSFC/SED/ESD/ESPO/OIB</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>241 GB</Distribution_Size><Distribution_Format>CSV</Distribution_Format></Distribution><Reference>Farrell, S. L., N. T. Kurtz, L. Connor, B. Elder, C. Leuschen, T. Markus, D. C. McAdoo, B. Panzer, J. Richter-Menge, and J. Sonntag. 2012. A First Assessment of IceBridge Snow and Ice Thickness Data over Arctic Sea Ice. IEEE Transactions on Geoscience and Remote Sensing, 50(6):2098-2111, doi:10.1109/TGRS.2011.2170843.

Kurtz, N. T. and S. L. Farrell. 2011. Large-scale Surveys of Snow Depth on Arctic Sea Ice from Operation IceBridge. Geophysical Research Letters, 38:L20505, doi:10.1029/2011GL049216.

Kurtz, N. T., Farrell, S. L., Studinger, M., Galin, N., Harbeck, J. P., Lindsay, R., Onana, V. D., Panzer, B., and Sonntag, J. G. 2013. Sea Ice Thickness, Freeboard, and Snow Depth Products from Operation IceBridge Airborne Data. The Cryosphere, 7:1035-1056, doi:10.5194/tc-7-1035-2013.

Wadhams, P., W. B. Tucker III, W. B. Krabill, R. N. Swift, J. C. Comiso, and N. R. Davis. 1992. Relationship Between Sea Ice Freeboard and Draft in the Arctic Basin, and Implications for Ice Thickness Monitoring. Journal of Geophysical Research, 97(C12):20325-20334.

Warren, S. G., I. G. Rigor, N. Untersteiner, V. F. Radionov, N. N. Bryazgin, Y. I. Aleksandrov, and R. Colony. 1999. Snow Depth on Arctic Sea Ice. Journal of Climate, 12:1814-1829.</Reference><Summary><Abstract>NOTE:  This data set has been replaced by &lt;a href="http://nsidc.org/data/idcsi4"&gt;IceBridge L4 Sea Ice Freeboard, Snow Depth, and Thickness (IDCSI4)&lt;/a&gt;. This data set contains derived geophysical data products including sea ice freeboard, snow depth, and sea ice thickness measurements in Antarctica retrieved from IceBridge Snow Radar, Digital Mapping System (DMS), Continuous Airborne Mapping By Optical Translator (CAMBOT), and Airborne Topographic Mapper (ATM) data sets. The data were collected as part of Operation IceBridge funded campaigns.</Abstract></Summary><Related_URL><URL_Content_Type><Type>VIEW RELATED INFORMATION</Type></URL_Content_Type><URL>https://nsidc.org/sites/default/files/idcsi2_pdf.pdf</URL><Description>IceBridge Sea Ice Freeboard, Snow Depth, and Thickness, Version 1 User Guide</Description></Related_URL><Related_URL><URL_Content_Type><Type>GET DATA</Type></URL_Content_Type><URL>https://nsidc.org/data/data-access-tool/IDCSI2/versions/1/</URL><Description>Data Access Tool</Description></Related_URL><Related_URL><URL_Content_Type><Type>PROJECT HOME PAGE</Type></URL_Content_Type><URL>http://nsidc.org/data/icebridge/index.html</URL><Description>IceBridge Product Web Site</Description></Related_URL><Related_URL><URL_Content_Type><Type>PROJECT HOME PAGE</Type></URL_Content_Type><URL>http://www.nasa.gov/mission_pages/icebridge/index.html</URL><Description>NASA IceBridge Mission</Description></Related_URL><Related_URL><URL_Content_Type><Type>PROJECT HOME PAGE</Type></URL_Content_Type><URL>http://www.nasa.gov/mission_pages/icebridge/index.html</URL><Description>NASA IceBridge Project Web Site</Description></Related_URL><Metadata_Name>CEOS IDN DIF</Metadata_Name><Metadata_Version>VERSION 9.9</Metadata_Version><DIF_Creation_Date>2012-03-02</DIF_Creation_Date><Last_DIF_Revision_Date>2026-05-05</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><number>1</number><summary>On September 06, 2012, the 2010 Greenland data files for dates 23 March 2010 through 21 April 2010 were replaced by Version 01.1 because a calibration file was incorrect. The data files were reprocessed with the correct calibration file. </summary><start_datetime>2010-03-23</start_datetime><end_datetime>2010-04-21</end_datetime><view_order>0</view_order></Value></Metadata><Metadata><Group>NSIDC</Group><Name>Update Frequency</Name><Value>updated 2015</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>No Data Access</Level></Value></Metadata><Metadata><Group>NSIDC</Group><Name>Full Dataset Citation</Name><Value>Kurtz, N., Studinger, M., Harbeck, J., Onana, V. &amp; Farrell, S. L. (2012). &lt;i&gt;IceBridge Sea Ice Freeboard, Snow Depth, and Thickness&lt;/i&gt;. (IDCSI2, Version 1). [Data Set]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. &lt;a href="https://doi.org/10.5067/7XJ9HRV50O57"&gt;https://doi.org/10.5067/7XJ9HRV50O57&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>true</Value></Metadata><Metadata><Group>NSIDC</Group><Name>Related Tools</Name><Value><umm-t><meta><format>application/vnd.nasa.cmr.umm+json</format><deleted>false</deleted><user-id>mbeig</user-id><native-id>mmt_tool_50907</native-id><concept-id>TL3010466318-NSIDC_CPRD</concept-id><provider-id>NSIDC_CPRD</provider-id><revision-id>4</revision-id><concept-type>tool</concept-type><revision-date>2024-05-28T17:29:12.271Z</revision-date></meta><umm><DOI>https://zenodo.org/badge/latestdoi/399867529</DOI><URL><Type>DOWNLOAD SOFTWARE</Type><URLValue>https://earthaccess.readthedocs.io/en/latest/</URLValue><URLContentType>DistributionURL</URLContentType></URL><Name>NSIDC_CPRD_EARTHACCESS</Name><Type>Downloadable Tool</Type><Version>0.9.0</Version><LongName>earthaccess</LongName><Description>earthaccess is a python library to search and access NASA Earth science data with just a few lines of code.</Description><RelatedURLs><RelatedURL><URL>https://github.com/nsidc/earthaccess</URL><Type>VIEW RELATED INFORMATION</Type><Description>GitHub Repository</Description><URLContentType>PublicationURL</URLContentType></RelatedURL></RelatedURLs><ToolKeywords><ToolKeyword><ToolTerm>DATA ACCESS/RETRIEVAL</ToolTerm><ToolTopic>DATA MANAGEMENT/DATA HANDLING</ToolTopic><ToolCategory>EARTH SCIENCE SERVICES</ToolCategory></ToolKeyword><ToolKeyword><ToolTerm>DATA SEARCH</ToolTerm><ToolTopic>DATA MANAGEMENT/DATA HANDLING</ToolTopic><ToolCategory>EARTH SCIENCE SERVICES</ToolCategory></ToolKeyword></ToolKeywords><ContactGroups><ContactGroup><Roles><Role>PUBLISHER</Role></Roles><GroupName>NSIDC DAAC User Services</GroupName><ContactInformation><ContactMechanisms><ContactMechanism><Type>Email</Type><Value>nsidc@nsidc.org</Value></ContactMechanism></ContactMechanisms></ContactInformation></ContactGroup></ContactGroups><Organizations><Organization><Roles><Role>PUBLISHER</Role></Roles><LongName>NASA National Snow and Ice Data Center Distributed Active Archive Center</LongName><URLValue>https://nsidc.org/daac/</URLValue><ShortName>NASA NSIDC DAAC</ShortName></Organization><Organization><Roles><Role>PUBLISHER</Role></Roles><LongName>National Snow and Ice Data Center</LongName><URLValue>http://nsidc.org</URLValue><ShortName>NSIDC</ShortName></Organization><Organization><Roles><Role>DEVELOPER</Role></Roles><LongName>Alaska Satellite Facility</LongName><URLValue>https://www.asf.alaska.edu/</URLValue><ShortName>ASF</ShortName></Organization><Organization><Roles><Role>DEVELOPER</Role></Roles><LongName>Institute for the Study of Earth, Oceans, and Space, University of New Hampshire</LongName><URLValue>http://www.eos.unh.edu/</URLValue><ShortName>UNH/EOS</ShortName></Organization><Organization><Roles><Role>DEVELOPER</Role></Roles><LongName>Atmospheric Science Data Center, Science Directorate, Langley Research Center, NASA</LongName><URLValue>https://asdc.larc.nasa.gov/</URLValue><ShortName>NASA/LARC/SD/ASDC</ShortName></Organization></Organizations><UseConstraints><LicenseText>MIT License

Copyright (c) 2021 Luis Lopez

Permission is hereby granted, free of charge, to any person obtaining a copy
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.</LicenseText></UseConstraints><LastUpdatedDate>2024-02-29T00:00:00.000Z</LastUpdatedDate><AccessConstraints>As a condition of use, we request that you properly cite the earthaccess library to acknowledge the creators.  Formal citations also make it easier for us to track the use and impact of our data and tools, and helps us report data distribution activity and tool usage metrics to funding agencies.

If you have used earthaccess in your research, please cite as:

Barrett, A., Battisto, C., Bourbeau, J., Fisher, M., Kaufman, D., Kennedy, J., Lopez, L., Lowndes, J., Scheick, J., &amp; Steiker, A. (2024). earthaccess (Version 0.9.0) [Computer software]. https://doi.org/10.5281/zenodo.8365009

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