{"NOAAStudyId":"23084","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":"2017-11-15","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-23084.xml","doi":null,"earliestYearBP":14378,"earliestYearCE":-12428,"entryId":"noaa-lake-23084","funding":[],"investigators":"Andresen, C.S.; Bjorck, S.; Bennike, O.; Bond, G.C.","mostRecentYearBP":470,"mostRecentYearCE":1480,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/23084","originalSource":null,"publication":[{"abstract":"A Holocene lake sediment record is presented from Lake N14 situated on Angissoq Island 15 km off the main coast of southern Greenland. The palaeoclimatic development has been interpreted on the basis of flux and percentage content of biogenic silica, clastic material, organic material and sulphur as well as sedimentation rate, moss content and magnetic susceptibility. A total of 43 radiocarbon dates has ensured a reliable chronology. It is argued that varying sediment com- position mainly reflects changing precipitation. By analogy with the present meteorological condi- tions in southern Greenland, Holocene climate development is inferred. Between 11 550 and 9300 cal. yr BP temperature and precipitation increase markedly, but this period is climatically unstable. From 9300 yr BP conditions become more stable and a Holocene climatic optimum, char- acterised by warm and humid conditions, is  observed  from  8000  to  5000 cal. yr BP.  From 4700 cal. yr BP the first signs of a climatic deterioration are observed, and from 3700 cal. yr BP the climate has become more dry and cold. Superimposed on the climatic long-term trend is climate variability on a centennial time-scale that increases in amplitude after 3700 cal. yr BP. A climatic sce- nario related to the strength and position of the Greenland high-pressure cell and the Iceland low-pressure cell is proposed to explain the Holocene centennial climate variability. A comparison of the Lake N14 record with a terrestrial as well as a marine record from the eastern North Atlantic Ocean suggests that the centennial climate variability was uniform over large areas at certain times.","author":{"name":"Andresen, Camilla S.;  Björck, Svante;  Bennike, Ole;  Bond, Gerard"},"citation":"Andresen, Camilla S.;  Björck, Svante;  Bennike, Ole;  Bond, Gerard. 2004. Holocene climate changes in southern Greenland: evidence from lake sediments. Journal of Quaternary Science, 19(8). doi: 10.1002/jqs.886","edition":null,"identifier":{"id":"10.1002/jqs.886","type":"doi","url":"http://dx.doi.org/10.1002/jqs.886"},"issue":"8","journal":"Journal of Quaternary Science","pages":null,"pubRank":"1","pubYear":2004,"reportNumber":null,"title":"Holocene climate changes in southern Greenland: evidence from lake sediments","type":"publication","volume":"19"}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"57533","geo":{"geoType":"Feature","geometry":{"coordinates":["59.98","-44.18"],"type":"POINT"},"properties":{"easternmostLongitude":"-44.18","maxElevationMeters":"101","minElevationMeters":"101","northernmostLatitude":"59.98","southernmostLatitude":"59.98","westernmostLongitude":"-44.18"}},"locationName":"Continent>North America>Greenland","mappable":"Y","paleoData":[{"NOAADataTableId":"34394","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>geochemistry"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/NAm2kHydro-2017/noaa-templates/data-version-1.0.0/N14.Andresen.2004.txt","linkText":"Lake N14 Lake Sediment Data (NOAA Template Format)","urlDescription":"NOAA Template File","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":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar year before present","cvWhat":"age variable>age"},{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"percent","cvWhat":"chemical composition>compound>inorganic compound>silicon dioxide>biogenic silica"}]},{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>geochemistry"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/NAm2kHydro-2017/data-version-1.0.0/N14.Andresen.2004.lpd","linkText":"Lake N14 Lake Sediment Data (LiPD Format)","urlDescription":"Linked Paleo Data (LiPD) File","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":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar year before present","cvWhat":"age variable>age"},{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"percent","cvWhat":"chemical composition>compound>inorganic compound>silicon dioxide>biogenic silica"}]}],"dataTableName":"N14-Andresen-2004","dataTableNotes":null,"earliestYear":14378,"earliestYearBP":14378,"earliestYearCE":-12428,"mostRecentYear":470,"mostRecentYearBP":470,"mostRecentYearCE":1480,"species":[],"timeUnit":"cal yr BP"}],"siteName":"N14"}],"studyCode":null,"studyName":"Lake N14, Southern Greenland Holocene Lake Sediment Data","studyNotes":null,"version":"1.0","xmlId":"21261"}