<?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>2026-06-30T05:23:20Z</responseDate><request identifier="G00801.001" metadataPrefix="dif" verb="GetRecord">http://nsidc.org/api/dataset/metadata/oai</request><GetRecord><record><header><identifier>oai:nsidc.org/G00801.001</identifier><datestamp>2025-12-03T15:17:18Z</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>G00801.001</Entry_ID><Entry_Title>GLERL Great Lakes Air Temperature/Degree Day Climatology, 1897-1983</Entry_Title><Data_Set_Citation><Dataset_Creator>Assel, R. A.</Dataset_Creator><Dataset_Title>GLERL Great Lakes Air Temperature/Degree Day Climatology, 1897-1983</Dataset_Title><Dataset_Release_Date>1995-01-01</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/N5VD6WCJ</Dataset_DOI><Online_Resource>https://dx.doi.org/10.7265/N5VD6WCJ</Online_Resource><Dataset_Series_Name>G00801</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><Personnel><Role>Investigator</Role><First_Name>Raymond</First_Name><Middle_Name>A.</Middle_Name><Last_Name>Assel</Last_Name><Email>assel@glerl.noaa.gov</Email><Contact_Address><Address>Great Lakes Environmental Research Laboratory</Address><Address>NOAA/OAR/ERL/GLERL</Address><Address>2205 Commonwealth Blvd.</Address><City>Ann Arbor</City><Province_or_State>MI</Province_or_State><Postal_Code>48105-1593</Postal_Code><Country/></Contact_Address></Personnel><Parameters><Category>EARTH SCIENCE</Category><Topic>ATMOSPHERE</Topic><Term>ATMOSPHERIC TEMPERATURE</Term><Variable_Level_1>SURFACE TEMPERATURE</Variable_Level_1><Variable_Level_2>AIR TEMPERATURE</Variable_Level_2><Variable_Level_3> </Variable_Level_3><Detailed_Variable> </Detailed_Variable></Parameters><Parameters><Category>EARTH SCIENCE</Category><Topic>ATMOSPHERE</Topic><Term>ATMOSPHERIC TEMPERATURE</Term><Variable_Level_1>ATMOSPHERIC TEMPERATURE INDICES</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>ATMOSPHERE</Topic><Term>ATMOSPHERIC TEMPERATURE</Term><Variable_Level_1>SURFACE TEMPERATURE</Variable_Level_1><Variable_Level_2>MAXIMUM/MINIMUM TEMPERATURE</Variable_Level_2><Variable_Level_3> </Variable_Level_3><Detailed_Variable> </Detailed_Variable></Parameters><ISO_Topic_Category>Climatology/Meteorology/Atmosphere</ISO_Topic_Category><ISO_Topic_Category>Inland Waters</ISO_Topic_Category><Keyword>Air Temperature</Keyword><Keyword>Climatology</Keyword><Keyword>Freezing Degree Days</Keyword><Keyword>Meteorology</Keyword><Keyword>Thawing Degree Days</Keyword><Sensor_Name><Short_Name>THERMOMETERS</Short_Name></Sensor_Name><Source_Name><Short_Name>GROUND-BASED OBSERVATIONS</Short_Name><Long_Name>GROUND-BASED OBSERVATIONS</Long_Name></Source_Name><Temporal_Coverage><Start_Date>1897-01-01</Start_Date><Stop_Date>1983-12-31</Stop_Date></Temporal_Coverage><Data_Set_Progress>complete</Data_Set_Progress><Spatial_Coverage><Southernmost_Latitude>41</Southernmost_Latitude><Northernmost_Latitude>49</Northernmost_Latitude><Westernmost_Longitude>-93</Westernmost_Longitude><Easternmost_Longitude>-76</Easternmost_Longitude></Spatial_Coverage><Location><Location_Category>Continent</Location_Category><Location_Type>North America</Location_Type><Location_Subregion1>United States Of America</Location_Subregion1><Location_Subregion2>Great Lakes</Location_Subregion2><Location_Subregion3/><Detailed_Location/></Location><Location><Location_Category>Continent</Location_Category><Location_Type>North America</Location_Type><Location_Subregion1>Canada</Location_Subregion1><Location_Subregion2/><Location_Subregion3/><Detailed_Location>Great Lakes</Detailed_Location></Location><Location><Location_Category>Continent</Location_Category><Location_Type>North America</Location_Type><Location_Subregion1>United States Of America</Location_Subregion1><Location_Subregion2/><Location_Subregion3/><Detailed_Location>Great Lakes</Detailed_Location></Location><Location><Location_Category>Geographic Region</Location_Category><Location_Type>Mid-latitude</Location_Type><Location_Subregion1/><Location_Subregion2/><Location_Subregion3/><Detailed_Location/></Location><Location><Location_Category>Continent</Location_Category><Location_Type>North America</Location_Type><Location_Subregion1/><Location_Subregion2/><Location_Subregion3/><Detailed_Location>Canada</Detailed_Location></Location><Data_Resolution><Longitude_Resolution>Varies</Longitude_Resolution><Temporal_Resolution>Varies</Temporal_Resolution></Data_Resolution><Access_Constraints>These data are freely, openly, and fully accessible without restrictions.</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.</Use_Constraints><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_Size>14.8 MB</Distribution_Size><Distribution_Format>ASCII</Distribution_Format></Distribution><Reference>Assel, R. A. Great Lakes weekly ice cover statistics. NOAA Technical Memorandum GLERL-133. NOAA, Great Lakes Environmental Research Laboratory, Ann Arbor, MI, 27 pp. (2005). ftp://ftp.glerl.noaa.gov/publications/tech_reports/glerl-133/

 Assel, R. A. Computerized National Weather Service Great Lakes ice reports for winter seasons 1899-1970. NOAA Technical Memorandum GLERL-130. NOAA, Great Lakes Environmental Research Laboratory, Ann Arbor, MI, 31 pp. (2004). ftp://ftp.glerl.noaa.gov/publications/tech_reports/glerl-130/

Assel, R. A. A Laurentian Great Lakes ice cover climatology. Proceedings of the 61st Annual Meeting of the Eastern Snow Conference, Portland, Maine, June 9-11, 2004. 2 pp. (2004). http://www.glerl.noaa.gov/pubs/fulltext/2004/20040027.pdf

Assel, R. A., F. H. Quinn, and C. E. Sellinger. Hydro-climatic factors of the recent drop in Laurentian Great Lakes water levels. Bulletin of the American Meteorological Society 85(8):1143-1151 (2004). http://www.glerl.noaa.gov/pubs/fulltext/2004/20040017.pdf

Assel, R. A., S. Drobot, and T. E. Croley, II. Improving 30-day Great Lakes ice cover outlooks. Journal of Hydrometeorology 5(4):713-717 (2004). http://www.glerl.noaa.gov/pubs/fulltext/2004/20040016.pdf

Assel, R. A., S. Drobot, and T. E. CROLEY, II. Improving monthly Great Lakes ice cover outlooks. NOAA Technical Memorandum GLERL-129. NOAA, Great Lakes Environmental Research Laboratory, Ann Arbor, MI, 22 pp. (2004). ftp://ftp.glerl.noaa.gov/publications/tech_reports/glerl-129/

Assel, R. A. Lake Erie ice cover climatology -- basin averaged ice cover: winters 1898-2002. NOAA Technical Memorandum GLERL-128. NOAA, Great Lakes Environmental Research Laboratory, Ann Arbor, MI, 15 pp. (2004). ftp://ftp.glerl.noaa.gov/publications/tech_reports/glerl-128/

Assel, R. A. Great Lakes Degree-Day and Temperature Summaries and Norms, 1897 - 1977. NOAA Data Report ERL GLERL-15, January 1980 NTIS number: PB80-195977.

Assel, R.A. Great Lakes Degree-Day and Winter Severity Index Update: 1897-1983. NOAA Data Report ERL GLERL-29, May 1986 NTIS number: PB86-22243.</Reference><Summary><Abstract>Daily maximum and minimum temperatures for 25 stations around the Great Lakes, 1897 to 1983, were given to NSIDC by the NOAA Great Lakes Environmental Research Laboratory (GLERL), Ann Arbor, MI. Daily data can be used to produce daily maximum, minimum, and mean temperatures, and seasonal accumulations of freezing and thawing degree days. The statistical data are archived in ASCII text files transcribed from 25 reels of 35 mm microfilm, one roll per station. Microfilm rolls are the appendices to Assel (1980), with updates covering 1978 to 1983 spliced to the end of each microfilm roll. Data sources include U.S. Department of Commerce summaries of meteorological data for Minnesota, Michigan, Wisconsin, Illinois, Pennsylvania, and New York, and the monthly meteorological observations published by Environment Canada.</Abstract></Summary><Related_URL><URL_Content_Type><Type>VIEW RELATED INFORMATION</Type></URL_Content_Type><URL>https://dx.doi.org/10.7265/N5VD6WCJ</URL><Description>Documentation</Description></Related_URL><Related_URL><URL_Content_Type><Type>GET DATA</Type></URL_Content_Type><URL>https://noaadata.apps.nsidc.org/NOAA/G00801/</URL><Description>HTTPS</Description></Related_URL><Related_URL><URL_Content_Type><Type>PROJECT HOME PAGE</Type></URL_Content_Type><URL>http://www.glerl.noaa.gov/data/ice/atlas/</URL><Description>NOAA Great Lakes Ice Atlas</Description></Related_URL><IDN_Node><Short_Name>USA/NOAA</Short_Name></IDN_Node><Metadata_Name>CEOS IDN DIF</Metadata_Name><Metadata_Version>VERSION 9.9</Metadata_Version><DIF_Creation_Date>1995-01-01</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>Assel, R. A. (1995). &lt;i&gt;GLERL Great Lakes Air Temperature/Degree Day Climatology, 1897-1983&lt;/i&gt;. (G00801, Version 1). [Data Set]. Boulder, Colorado USA. National Snow and Ice Data Center. &lt;a href="https://doi.org/10.7265/N5VD6WCJ"&gt;https://doi.org/10.7265/N5VD6WCJ&lt;/a&gt;. 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