<?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>2026-05-22T18:26:15Z</responseDate><request identifier="ATL22.003" metadataPrefix="dif" verb="GetRecord">http://nsidc.org/api/dataset/metadata/oai</request><GetRecord><record><header><identifier>oai:nsidc.org/ATL22.003</identifier><datestamp>2026-04-30T17:16:32Z</datestamp><setSpec>cumulus</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>ATL22.003</Entry_ID><Entry_Title>ATLAS/ICESat-2 L3B Mean Inland Surface Water Data</Entry_Title><Data_Set_Citation><Dataset_Creator>Jasinski, M. F., Stoll, J. D., Hancock, D., Robbins, J. &amp; Nattala, J.</Dataset_Creator><Dataset_Title>ATLAS/ICESat-2 L3B Mean Inland Surface Water Data</Dataset_Title><Dataset_Release_Date>2023-09-12</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>3</Version><Other_Citation_Details><Invert_Citation_Order>false</Invert_Citation_Order></Other_Citation_Details><Dataset_DOI>10.5067/ATLAS/ATL22.003</Dataset_DOI><Online_Resource>https://nsidc.org/sites/default/files/documents/user-guide/atl22-v003-userguide.pdf</Online_Resource><Dataset_Series_Name>ATL22</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>TERRESTRIAL HYDROSPHERE</Topic><Term>SURFACE WATER</Term><Variable_Level_1>SURFACE WATER PROCESSES/MEASUREMENTS</Variable_Level_1><Variable_Level_2> </Variable_Level_2><Variable_Level_3> </Variable_Level_3><Detailed_Variable> </Detailed_Variable></Parameters><Keyword>icesat2-project</Keyword><Sensor_Name><Short_Name>ATLAS</Short_Name><Long_Name>Advanced Topographic Laser Altimeter System</Long_Name></Sensor_Name><Source_Name><Short_Name>ICESat-2</Short_Name><Long_Name>Ice, Cloud, and land Elevation Satellite-2</Long_Name></Source_Name><Temporal_Coverage><Start_Date>2018-10-14</Start_Date><Stop_Date>2025-03-02</Stop_Date></Temporal_Coverage><Data_Set_Progress>deprecated</Data_Set_Progress><Spatial_Coverage><Southernmost_Latitude>-88</Southernmost_Latitude><Northernmost_Latitude>88</Northernmost_Latitude><Westernmost_Longitude>-180</Westernmost_Longitude><Easternmost_Longitude>180</Easternmost_Longitude></Spatial_Coverage><Location><Location_Category>GEOGRAPHIC REGION</Location_Category><Location_Type>GLOBAL LAND</Location_Type></Location><Data_Resolution><Latitude_Resolution>Varies</Latitude_Resolution><Longitude_Resolution>Varies</Longitude_Resolution><Temporal_Resolution>91 day</Temporal_Resolution></Data_Resolution><Access_Constraints>These data have been retired and are no longer accessible, though a more recent version of these data may be available.</Access_Constraints><Use_Constraints>These data have been retired and are no longer available for use, though a more recent version of these data may be available. Cite any prior or planned use of these data according to the recommended citation at 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>NASA/GSFC/SED/ESD/I2-SIPS</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_Format>HDF5</Distribution_Format></Distribution><Reference/><Summary><Abstract>ATL22 is a derivative of the continuous Level 3A ATL13 Along Track Inland Surface Water Data product. ATL13 contains the high-resolution, along-track inland water surface profiles derived from analysis of the geolocated photon clouds from the ATL03 product. Starting from ATL13, ATL22 computes the mean surface water quantities with no additional photon analysis. The two data products, ATL22 and ATL13, can be used in conjunction as they include the same orbit and water body nomenclature independent from version numbers.</Abstract></Summary><Related_URL><URL_Content_Type><Type>VIEW RELATED INFORMATION</Type></URL_Content_Type><URL>https://nsidc.org/sites/default/files/documents/user-guide/atl22-v003-userguide.pdf</URL><Description>ATLAS/ICESat-2 L3B Mean Inland Surface Water Data, Version 3 User Guide</Description></Related_URL><Metadata_Name>CEOS IDN DIF</Metadata_Name><Metadata_Version>VERSION 9.9</Metadata_Version><DIF_Creation_Date>2023-09-12</DIF_Creation_Date><Last_DIF_Revision_Date>2026-04-30</Last_DIF_Revision_Date><Extended_Metadata><Metadata><Group>NSIDC</Group><Name>Version Summary</Name><Value>Version 3 of this data set was derived from ATL13 V6. The mean values of all parameters improved from ATL22 V2 by filtering ATL13 input heights using histogram analysis that excluded outliers (e.g., land, islands).</Value></Metadata><Metadata><Group>NSIDC</Group><Name>Minor Version</Name><Value><number>1</number><summary>Data were reprocessed using ITRF2014 (replacing ITRF2020) for consistency across the entire data set. </summary><start_datetime>2022-11-13</start_datetime><end_datetime>2023-10-26</end_datetime><view_order>0</view_order></Value></Metadata><Metadata><Group>NSIDC</Group><Name>Spatial Reference Systems</Name><Value><Spatial_Reference_System><SRID>EPSG:4326</SRID><Description>WGS 84</Description></Spatial_Reference_System></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>Jasinski, M. F., Stoll, J. D., Hancock, D., Robbins, J. &amp; Nattala, J. (2023). &lt;i&gt;ATLAS/ICESat-2 L3B Mean Inland Surface Water Data&lt;/i&gt;. (ATL22, Version 3). [Data Set]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. &lt;a href="https://doi.org/10.5067/ATLAS/ATL22.003"&gt;https://doi.org/10.5067/ATLAS/ATL22.003&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></Extended_Metadata></DIF>
</metadata></record></GetRecord></OAI-PMH>