<?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>2026-05-22T10:33:57Z</responseDate><request identifier="NSIDC-0176.002" metadataPrefix="dif" verb="GetRecord">http://nsidc.org/api/dataset/metadata/oai</request><GetRecord><record><header><identifier>oai:nsidc.org/NSIDC-0176.002</identifier><datestamp>2026-03-03T21:04:17Z</datestamp><setSpec>v0_daac</setSpec><setSpec>v0_all</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>NSIDC-0176.002</Entry_ID><Entry_Title>CLPX-Ground: ISA Snow Pit Measurements</Entry_Title><Data_Set_Citation><Dataset_Creator>Cline, D., Armstrong, R., Davis, R., Elder, K. &amp; Liston, G. E.</Dataset_Creator><Dataset_Title>CLPX-Ground: ISA Snow Pit Measurements</Dataset_Title><Dataset_Release_Date>2003-08-20</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>2</Version><Other_Citation_Details><Invert_Citation_Order>false</Invert_Citation_Order></Other_Citation_Details><Dataset_DOI>10.5060/D4H41PBP</Dataset_DOI><Online_Resource>https://nsidc.org/sites/default/files/nsidc-0176-v002-userguide_1.pdf</Online_Resource><Dataset_Series_Name>NSIDC-0176</Dataset_Series_Name></Data_Set_Citation><Personnel><Role>Investigator</Role><First_Name>Don</First_Name><Last_Name>Cline</Last_Name><Email>cline@nohrsc.nws.gov</Email><Phone>1-952-361 6610</Phone><Fax>1-952-361 6634</Fax><Contact_Address><Address>National Weather Service</Address><Address>National Operational Hydrologic Remote Sensing Center</Address><Address>1735 Lake Drive W.</Address><City>Chanhassen</City><Province_or_State>MN</Province_or_State><Postal_Code>55317</Postal_Code><Country/></Contact_Address></Personnel><Personnel><Role>Investigator</Role><First_Name>Richard</First_Name><Last_Name>Armstrong</Last_Name><Email>rlax@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>Colorado</Province_or_State><Postal_Code>80309-0449</Postal_Code><Country>USA</Country></Contact_Address></Personnel><Personnel><Role>Investigator</Role><First_Name>Robert</First_Name><Last_Name>Davis</Last_Name><Email>bert.davis@us.army.mil</Email><Phone>1-603-646 4219</Phone><Fax>1-603-646 4109</Fax><Contact_Address><Address>72 Lyme Road</Address><City>Hanover</City><Province_or_State>NH</Province_or_State><Postal_Code>03755</Postal_Code><Country>USA</Country></Contact_Address></Personnel><Personnel><Role>Investigator</Role><First_Name>Kelly</First_Name><Last_Name>Elder</Last_Name><Email>kelder@fs.fed.us</Email><Phone>1-970-498 1233</Phone><Fax>1-970-498 1212</Fax><Contact_Address><Address>Rocky Mountain Research Station</Address><Address>USDA Forest Service</Address><Address>240 West Prospect Road</Address><City>Fort Collins</City><Province_or_State>CO</Province_or_State><Postal_Code>80526</Postal_Code><Country/></Contact_Address></Personnel><Personnel><Role>Investigator</Role><First_Name>Glen</First_Name><Middle_Name>E.</Middle_Name><Last_Name>Liston</Last_Name><Email>liston@tachu.atmos.colostate.edu</Email><Phone>1-970-491-7473</Phone><Contact_Address><Address>Department of Atmospheric Science</Address><Address>Colorado State University</Address><City>Fort Collins</City><Province_or_State>CO</Province_or_State><Postal_Code>80523</Postal_Code><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>SNOW/ICE</Term><Variable_Level_1>SNOW DENSITY</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>SNOW/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>SNOW/ICE</Term><Variable_Level_1> </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>SNOW/ICE</Term><Variable_Level_1>SNOW/ICE CHEMISTRY</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>SNOW/ICE</Term><Variable_Level_1>SNOW/ICE TEMPERATURE</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>SNOW/ICE</Term><Variable_Level_1>SNOW STRATIGRAPHY</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>SNOW/ICE</Term><Variable_Level_1>SNOW WATER EQUIVALENT</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>LAND SURFACE</Topic><Term>TOPOGRAPHY</Term><Variable_Level_1>SURFACE ROUGHNESS</Variable_Level_1><Variable_Level_2> </Variable_Level_2><Variable_Level_3> </Variable_Level_3><Detailed_Variable> </Detailed_Variable></Parameters><Keyword>AMSR-E Validation-project</Keyword><Keyword>CLPX-project</Keyword><Keyword>ground-based</Keyword><Keyword>Snow Density</Keyword><Keyword>snow grain size</Keyword><Keyword>Snow Pit</Keyword><Keyword>Snow Pits</Keyword><Keyword>Snow Stratigraphy</Keyword><Sensor_Name><Short_Name>SNOW DENSITY CUTTER</Short_Name></Sensor_Name><Sensor_Name><Short_Name>SNOW MEASURING ROD</Short_Name></Sensor_Name><Source_Name><Short_Name>GROUND STATIONS</Short_Name><Long_Name>GROUND STATIONS</Long_Name></Source_Name><Source_Name><Short_Name>GROUND-BASED OBSERVATIONS</Short_Name><Long_Name>GROUND-BASED OBSERVATIONS</Long_Name></Source_Name><Temporal_Coverage><Start_Date>2002-02-19</Start_Date><Stop_Date>2002-03-30</Stop_Date></Temporal_Coverage><Data_Set_Progress>complete</Data_Set_Progress><Spatial_Coverage><Southernmost_Latitude>38.5</Southernmost_Latitude><Northernmost_Latitude>42</Northernmost_Latitude><Westernmost_Longitude>-108.5</Westernmost_Longitude><Easternmost_Longitude>-104</Easternmost_Longitude></Spatial_Coverage><Location><Location_Category>Continent</Location_Category><Location_Type>North America</Location_Type><Location_Subregion1/><Location_Subregion2/><Location_Subregion3/><Detailed_Location>Rocky Mountains</Detailed_Location></Location><Location><Location_Category>Geographic Region</Location_Category><Location_Type>Northern Hemisphere</Location_Type><Location_Subregion1/><Location_Subregion2/><Location_Subregion3/><Detailed_Location/></Location><Access_Constraints>These data are freely, openly, and fully accessible, provided that you are logged into your NASA Earthdata profile (https://urs.earthdata.nasa.gov/).</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. For more information on the NASA EOSDIS Data Use Policy, see https://earthdata.nasa.gov/earth-observation-data/data-use-policy.</Use_Constraints><Data_Set_Language>English</Data_Set_Language><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_Size>20 - 300 KB</Distribution_Size><Distribution_Format>ASCII</Distribution_Format></Distribution><Distribution><Distribution_Media>FTP</Distribution_Media><Distribution_Size>20 - 300 KB</Distribution_Size><Distribution_Format>ASCII</Distribution_Format></Distribution><Distribution><Distribution_Media>HTTPS</Distribution_Media><Distribution_Size>1 - 8 MB</Distribution_Size><Distribution_Format>Shapefile</Distribution_Format></Distribution><Distribution><Distribution_Media>FTP</Distribution_Media><Distribution_Size>1 - 8 MB</Distribution_Size><Distribution_Format>Shapefile</Distribution_Format></Distribution><Reference/><Summary><Abstract>This data set consists of snow pit data from nine study areas, within three larger-scale areas in northern Colorado (Fraser, North Park, and Rabbit Ears Meso-cell Study Areas (MSAs)). 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