{"xmlId":"11058","NOAAStudyId":"13016","studyName":"Lake Silvaplana, Switzerland 775 Year Summer Temperature Reconstruction","doi":"https://doi.org/10.25921/8s1c-pr84","uuid":"d0943489-22cc-4b2c-82db-90c4ecfa9c83","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":"Trachsel, M.; Grosjean, M.; Schnyder, D.; Kamenik, C.; Rein, B.","investigatorDetails":[{"firstName":"Mathias","lastName":"Trachsel","initials":"M.","orcId":"0000-0003-0078-5795"},{"firstName":"Martin","lastName":"Grosjean","initials":"M.","orcId":"0000-0002-3553-8842"},{"firstName":null,"lastName":"Schnyder","initials":"D.","orcId":null},{"firstName":"Christian","lastName":"Kamenik","initials":"C.","orcId":null},{"firstName":"Bert","lastName":"Rein","initials":"B.","orcId":null}],"version":"1.0","funding":[{"fundingAgency":"European Commission MILLENNIUM Integrated Project","fundingGrant":"Contract 017008"},{"fundingAgency":"Swiss National Centre of Competence in Research (NCCR)","fundingGrant":"NF-200021-106005/1 \"ENLARGE\""}],"studyNotes":"775 year summer (JJA) temperature reconstruction for the Swiss Alps based on visible reflectance spectroscopy from Lake Silvaplana, Switzerland. Lake Silvaplana, Switzerland: 46°27'N, 9°48'E, 1800m","onlineResourceLink":"https://www.ncei.noaa.gov/access/paleo-search/study/13016","difMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-lake-13016.xml","isoMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/iso/xml/noaa-lake-13016.xml","originalSource":null,"dataTypeInformation":"https://www.ncei.noaa.gov/products/paleoclimatology/lake","studyCode":null,"scienceKeywords":["Air Temperature Reconstruction"],"reconstruction":"Y","contributionDate":"2012-06-13","entryId":"noaa-lake-13016","earliestYearBP":775,"mostRecentYearBP":1,"earliestYearCE":1175,"mostRecentYearCE":1949,"publication":[{"author":{"name":"Trachsel, M., M. Grosjean, D. Schnyder, C. Kamenik, and B. Rein"},"pubYear":2010,"title":"Scanning reflectance spectroscopy (380730 nm): a novel method for quantitative high-resolution climate reconstructions from minerogenic lake sediments","journal":"Journal of Paleolimnology","volume":"44","edition":null,"issue":"4","pages":"979-994","reportNumber":null,"citation":"Trachsel, M., M. Grosjean, D. Schnyder, C. Kamenik, and B. Rein. 2010. Scanning reflectance spectroscopy (380730 nm): a novel method for quantitative high-resolution climate reconstructions from minerogenic lake sediments. Journal of Paleolimnology, 44(4), 979-994. doi: 10.1007/s10933-010-9468-7","type":"publication","identifier":{"type":"doi","id":"10.1007/s10933-010-9468-7","url":"http://dx.doi.org/10.1007/s10933-010-9468-7"},"abstract":"High-resolution (annual to sub-decadal) quantitative reconstructions of climate variables are needed from a variety of paleoclimate archives across the world to place current climate change in the context of long-term natural climate variability.  Rapid, high-resolution, non-destructive scanning techniques are required to produce such high-resolution records from lake sediments. In this study we explored the potential of scanning reflectance spectroscopy (VIS-RS; 380-730 nm) to produce quantitative summer temperature reconstructions from minerogenic sediments of proglacial, annually laminated Lake Silvaplana, in the eastern Swiss Alps. The scanning resolution was 2 mm, which corresponded to sediment deposition over 1-2 years. We found correlations up to r = 0.84 (p<0.05) for the calibration period 1864-1950, between six reflectance-dependent variables and summer (JJAS) temperature. These reflectance-dependent variables (e.g. slope of the reflectance 570/630 nm, indicative of illite, biotite and chlorite; minimum reflectance at 690 nm indicative of chlorite) indicate the mineralogical composition of the clastic sediments, which is, in turn, related to climate in the catchment of this particular proglacial lake. We used multiple linear regression (MLR) to establish a calibration model that explains 84% of the variance of summer (JJAS) temperature during the calibration period 1864-1950. We then applied the calibration model downcore to develop a quantitative summer temperature reconstruction extending back to AD 1177. This temperature reconstruction is in good agreement with two independent temperature reconstructions based on documentary data that extend back to AD 1500 and tree ring data that extend back to AD 1177. This study confirms the great potential of in situ scanning reflectance spectroscopy as a novel non-destructive technique to rapidly acquire high-resolution quantitative paleoclimate information from minerogenic lake sediments.","pubRank":"1"}],"site":[{"NOAASiteId":"19885","siteName":"Lake Silvaplana","siteCode":null,"mappable":"Y","locationName":"Continent>Europe>Western Europe>Switzerland","geo":{"geoType":"Feature","geometry":{"type":"POINT","coordinates":["46.45","9.8"]},"properties":{"southernmostLatitude":"46.45","northernmostLatitude":"46.45","westernmostLongitude":"9.8","easternmostLongitude":"9.8","minElevationMeters":"1800","maxElevationMeters":"1800"}},"paleoData":[{"dataTableName":"Trachsel2010c","NOAADataTableId":"22470","earliestYear":1175,"mostRecentYear":1949,"timeUnit":"CE","earliestYearBP":775,"mostRecentYearBP":1,"earliestYearCE":1175,"mostRecentYearCE":1949,"coreLengthMeters":null,"dataTableNotes":null,"species":[],"dataFile":[{"fileUrl":"https://www.ncei.noaa.gov/pub/data/paleo/paleolimnology/europe/switzerland/silvaplana2010c-noaa.txt","urlDescription":"NOAA Template File","linkText":"Silvaplana 775 Year Summer Temperature Reconstruction Data","variables":[{"cvDataType":"CLIMATE RECONSTRUCTIONS|PALEOLIMNOLOGY","cvWhat":"age variable>age","cvMaterial":null,"cvError":null,"cvUnit":"time unit>age unit>year Common Era","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"Year"},{"cvDataType":"CLIMATE RECONSTRUCTIONS|PALEOLIMNOLOGY","cvWhat":"earth system variable>temperature variable>temperature>surface temperature","cvMaterial":null,"cvError":null,"cvUnit":"temperature unit>degree Celsius","cvSeasonality":"3-month period>Jun-Aug","cvDetail":"filtered","cvMethod":null,"cvAdditionalInfo":"9-100 year band pass filtered; based on visible reflectance spectroscopy","cvFormat":"Numeric","cvShortName":"TJJA"}],"NOAAKeywords":["earth science>paleoclimate>paleolimnology>physical properties","earth science>paleoclimate>paleolimnology>reconstruction"]}]}]}],"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}