{"xmlId":"20792","NOAAStudyId":"22594","studyName":"Lake Nuudsaku, Estonia 9,500 Year Stable Isotope Data","doi":"https://doi.org/10.25921/5bb4-qk36","uuid":"a9572af0-f00c-4b19-a590-5749a51d2a45","dataPublisher":"NOAA","contactInfo":{"type":"CONTACT INFORMATION","shortName":"DOC/NOAA/NESDIS/NCEI","longName":"National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce ","address":"325 Broadway, E/NE31","city":"Boulder","state":"CO","postalCode":"80305-3328","country":"USA","dataCenterUrl":"https://www.ncei.noaa.gov/products/paleoclimatology","email":"paleo@noaa.gov","phone":"828-271-4800","fax":null,"constraints":"Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site."},"dataType":"PALEOLIMNOLOGY","investigators":"Stansell, N.D.; Klein, E.S.; Finkenbinder, M.S.; Fortney, C.S.; Dodd, J.P.; Terasmaa, J.; Nelson, D.B.","investigatorDetails":[{"firstName":"Nathan","lastName":"Stansell","initials":"N.D.","orcId":"0000-0003-2477-1953"},{"firstName":"Eric","lastName":"Klein","initials":"E.S.","orcId":"0000-0002-8716-2656"},{"firstName":"Matthew","lastName":"Finkenbinder","initials":"M.S.","orcId":"0000-0003-4007-6141"},{"firstName":"Carolyn","lastName":"Fortney","initials":"C.S.","orcId":null},{"firstName":"Justin","lastName":"Dodd","initials":"J.P.","orcId":"0000-0002-2964-3566"},{"firstName":"Jaanus","lastName":"Terasmaa","initials":"J.","orcId":"0000-0002-1346-6411"},{"firstName":"Daniel","lastName":"Nelson","initials":"D.B.","orcId":"0000-0002-2716-7770"}],"version":"1.0","funding":[{"fundingAgency":"Northern Illinois University","fundingGrant":"Research and Artistry grant program, Goldich funds"}],"studyNotes":"Stable isotope (d18O and d13C) data from from fine-grained (<63 um) endogenic CaCO3 in sediments collected in Lake Nuudsaku, Estonia for the past 9,500 years.","onlineResourceLink":"https://www.ncei.noaa.gov/access/paleo-search/study/22594","difMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-lake-22594.xml","isoMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/iso/xml/noaa-lake-22594.xml","originalSource":null,"dataTypeInformation":"https://www.ncei.noaa.gov/products/paleoclimatology/lake","studyCode":null,"scienceKeywords":null,"reconstruction":"N","contributionDate":"2017-10-10","entryId":"noaa-lake-22594","earliestYearBP":9447,"mostRecentYearBP":-65,"earliestYearCE":-7497,"mostRecentYearCE":2015,"publication":[{"author":{"name":"Nathan D. Stansell, Eric S. Klein, Matthew S. Finkenbinder, Carolyn S. Fortney, Justin P. Dodd, Jaanus Terasmaa, Daniel B. Nelson"},"pubYear":2017,"title":"A stable isotope record of Holocene precipitation dynamics in the Baltic region from Lake Nuudsaku, Estonia","journal":"Quaternary Science Reviews","volume":"175","edition":null,"issue":null,"pages":"73-84","reportNumber":null,"citation":"Nathan D. Stansell, Eric S. Klein, Matthew S. Finkenbinder, Carolyn S. Fortney, Justin P. Dodd, Jaanus Terasmaa, Daniel B. Nelson. 2017. A stable isotope record of Holocene precipitation dynamics in the Baltic region from Lake Nuudsaku, Estonia. Quaternary Science Reviews, 175, 73-84. doi: 10.1016/j.quascirev.2017.09.013","type":"publication","identifier":{"type":"doi","id":"10.1016/j.quascirev.2017.09.013","url":"http://dx.doi.org/10.1016/j.quascirev.2017.09.013"},"abstract":"A long-term perspective of past hydroclimate variability for the Baltic region provides important context for evaluating the potential impacts of Northern Hemisphere temperature changes and shifting ocean-atmospheric interactions on northern European climate. Lake Nuudsaku is an open-basin lake in south-central Estonia with seasonal overflow fed by active springs and groundwater. Stable isotope analyses of surface water samples from regional lakes, rivers, wetlands, and precipitation indicate that Lake Nuudsaku water ´18O values are consistent with the isotopic composition of inflowing meteoric water. The isotopic composition of fine-grained (<63 ¼m) endogenic CaCO3 (´18Ocalcite) samples from Lake Nuudsaku vary between <14 to -90 (VPBD) over the last <9400 years. Based on sensitivity tests, we interpret the ´18Ocalcite variations from Lake Nuudsaku as a record of meteoric inputs; principally reflecting variations in the seasonality of precipitation, with temperature changes as a secondary influence. The ´18Ocalcite record indicates the early Holocene at <9400 calendar years before present (cal yr BP) was characterized by a high proportion of cold season (November through April) precipitation and lower temperatures, followed by waning cold season precipitation and higher temperatures until <8200 cal yr BP. The middle Holocene (82004200 cal yr BP) was likely a period of overall reduced cold season precipitation and higher temperatures, and/or increased warm season (May through October) precipitation. The late Holocene transition at <4200 cal yr BP generally marks a shift to lower ´18Ocalcite values that we interpret largely the result of increased cold season precipitation amounts. This was followed by the onset of more variable precipitation amounts and temperatures after <3600 cal yr BP, which gave way to less variable conditions during the last <2600 years. The Medieval Climate Anomaly (MCA) is marked by ´18Ocalcite values that are near the Holocene and present-day averages. The period spanning the Little Ice Age (LIA) is marked by low ´18Ocalcite values, suggesting temperatures were lower and cold season conditions were wetter than present-day. Proxy evidence from Lake Nuudsaku further indicates that centennial to millennial-scale hydroclimate shifts in the Baltic region were likely associated with changes in North Atlantic ocean-atmospheric circulation dynamics.","pubRank":"1"}],"site":[{"NOAASiteId":"57438","siteName":"Lake Nuudsaku","siteCode":null,"mappable":"Y","locationName":"Continent>Europe>Northern Europe>Estonia","geo":{"geoType":"Feature","geometry":{"type":"POINT","coordinates":["58.1969","25.6275"]},"properties":{"southernmostLatitude":"58.1969","northernmostLatitude":"58.1969","westernmostLongitude":"25.6275","easternmostLongitude":"25.6275","minElevationMeters":null,"maxElevationMeters":null}},"paleoData":[{"dataTableName":"Nuudsaku2017iso","NOAADataTableId":"33720","earliestYear":9447,"mostRecentYear":-65,"timeUnit":"cal yr BP","earliestYearBP":9447,"mostRecentYearBP":-65,"earliestYearCE":-7497,"mostRecentYearCE":2015,"coreLengthMeters":7,"dataTableNotes":null,"species":[],"dataFile":[{"fileUrl":"https://www.ncei.noaa.gov/pub/data/paleo/paleolimnology/europe/estonia/nuudsaku2017iso.txt","urlDescription":"NOAA Template File","linkText":"Lake Nuudsaku Stable Isotope Data","variables":[{"cvDataType":"PALEOLIMNOLOGY","cvWhat":"depth variable>depth","cvMaterial":null,"cvError":null,"cvUnit":"length unit>centimeter","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"depth_cm"},{"cvDataType":"PALEOLIMNOLOGY","cvWhat":"age variable>age","cvMaterial":null,"cvError":null,"cvUnit":"time unit>age unit>calendar year before present","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"age_calBP"},{"cvDataType":"PALEOLIMNOLOGY","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O","cvMaterial":"geological material>identified mineral>carbonate>calcium carbonate>calcite","cvError":null,"cvUnit":"concentration unit>parts per notation unit>parts per thousand>per mil>per mil VPDB","cvSeasonality":null,"cvDetail":null,"cvMethod":"laboratory method>spectroscopy>mass spectrometry>isotope ratio mass spectrometry","cvAdditionalInfo":"fine-grained (<63 um) endogenic CaCO3","cvFormat":"Numeric","cvShortName":"d18O"},{"cvDataType":"PALEOLIMNOLOGY","cvWhat":"chemical composition>isotope>isotope ratio>delta 13C","cvMaterial":"geological material>identified mineral>carbonate>calcium carbonate>calcite","cvError":null,"cvUnit":"concentration unit>parts per notation unit>parts per thousand>per mil>per mil VPDB","cvSeasonality":null,"cvDetail":null,"cvMethod":"laboratory method>spectroscopy>mass spectrometry>isotope ratio mass spectrometry","cvAdditionalInfo":"fine-grained (<63 um) endogenic CaCO3","cvFormat":"Numeric","cvShortName":"d13C"}],"NOAAKeywords":["earth science>paleoclimate>paleolimnology>oxygen isotopes","earth science>paleoclimate>paleolimnology>carbon isotopes"]}]}]}],"reference":{"pastThesaurusSkos":"https://www.ncei.noaa.gov/access/paleo-search/skos/past-thesaurus.rdf","pastThesaurusExplorer":"https://www.ncei.noaa.gov/access/paleo-search/cvterms","gcmdKeywordThesaurus":"https://earthdata.nasa.gov/earth-observation-data/find-data/idn/gcmd-keywords"},"dataLicenseDescription":null,"dataLicenseUrl":null}