{"NOAAStudyId":"8661","contactInfo":{"address":"325 Broadway, E/NE31","city":"Boulder","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.","country":"USA","dataCenterUrl":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data","email":"paleo@noaa.gov","fax":"303-497-6513","longName":"National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce ","phone":"303-497-6280","postalCode":"80305-3328","shortName":"DOC/NOAA/NESDIS/NCEI","state":"CO","type":"CONTACT INFORMATION"},"contributionDate":"2009-10-01","dataPublisher":"NOAA","dataType":"PALEOLIMNOLOGY","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/lake","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-lake-8661.xml","doi":null,"earliestYearBP":1949,"earliestYearCE":1,"entryId":"noaa-lake-8661","funding":[],"investigators":"Haltia-Hovi, E.; Saarinen, T.; Kukkonen, M.","mostRecentYearBP":-54,"mostRecentYearCE":2004,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/8661","originalSource":null,"publication":[{"abstract":"A high-resolution study was performed on varved sediments from Lake Lehmilampi in eastern Finland. Varve data was collected by digital image analysis using standard 1.8 mm thick samples impregnated in epoxy and X-rayed. Climatic variability is imprinted on varve properties (varve thickness and accumulation of mineral and organic matter) during the last 2000 years. The cumulative counting error of the varve record is estimated as 2.3%. Qualitative comparison of varve parameters and residual D14C constructed from tree-rings revealed close correspondence between the two records, suggesting solar forcing on lake sedimentation. Classical climatic periods of the last millennia, Medieval Climate Anomaly (1060-1280 in the varve record) and Little Ice Age (cooler phases culminating in 1340, 1465, 1545, 1680, 1850 and also in 1930 in the varve record) are clearly evident in the varve record. At present the physical link between solar activity levels and lake sedimentation has not been established.","author":{"name":"Eeva Haltia-Hovi, Timo Saarinen, Maaret Kukkonen"},"citation":"Eeva Haltia-Hovi, Timo Saarinen, Maaret Kukkonen. 2007. A 2000-year record of solar forcing on varved lake sediment in eastern Finland. Quaternary Science Reviews, 26(5-6), 678-689. doi: 10.1016/j.quascirev.2006.11.005","edition":null,"identifier":{"id":"10.1016/j.quascirev.2006.11.005","type":"doi","url":"http://dx.doi.org/10.1016/j.quascirev.2006.11.005"},"issue":"5-6","journal":"Quaternary Science Reviews","pages":"678-689","pubRank":"1","pubYear":2007,"reportNumber":null,"title":"A 2000-year record of solar forcing on varved lake sediment in eastern Finland","type":"publication","volume":"26"}],"reconstruction":"N","scienceKeywords":["PAGES Arctic 2k","PAGES 2k Network"],"site":[{"NOAASiteId":"22958","geo":{"geoType":"Feature","geometry":{"coordinates":["63.616","29.1"],"type":"POINT"},"properties":{"easternmostLongitude":"29.1","maxElevationMeters":"95","minElevationMeters":"95","northernmostLatitude":"63.616","southernmostLatitude":"63.616","westernmostLongitude":"29.1"}},"locationName":"Continent>Europe>Northern Europe>Scandanavia>Finland","mappable":"Y","paleoData":[{"NOAADataTableId":"12537","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>physical properties"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/finland/lehmilampi2007.txt","linkText":"lehmilampi2007.txt","urlDescription":"Data","variables":[{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","cvWhat":"age variable>age"},{"cvAdditionalInfo":"Measured on a grayscale of 0-255","cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":"x-ray densitometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"dimensionless","cvWhat":"electromagnetic property>absorbance"},{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"millimeter","cvWhat":"physical property>length>varve thickness"}]},{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>physical properties"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/finland/lehmilampi2007.xls","linkText":"lehmilampi2007.xls","urlDescription":"Data","variables":[]}],"dataTableName":"Lake Lehmilampi Core LEHMIL","dataTableNotes":null,"earliestYear":1949,"earliestYearBP":1949,"earliestYearCE":1,"mostRecentYear":-54,"mostRecentYearBP":-54,"mostRecentYearCE":2004,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Lake Lehmilampi"}],"studyCode":null,"studyName":"Lake Lehmilampi, Finland 2000 Year Varved Sediment Data","studyNotes":"Sediment varve thickness and relative X-Ray density data from Lake Lehmilampi, eastern Finland. ","version":"1.0","xmlId":"2291"}