{"xmlId":"2641","NOAAStudyId":"6285","studyName":"Sachs and Lehman 1999 Subtropical North Atlantic Alkenone SST Reconstruction","doi":"https://doi.org/10.25921/dr5c-v716","uuid":"93d7abde-1bfc-472a-89c9-42374f104352","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":"CLIMATE RECONSTRUCTIONS","investigators":"Sachs, J.P.; Lehman, S.J.","investigatorDetails":[{"firstName":"Julian","lastName":"Sachs","initials":"J.P.","orcId":"0000-0002-6247-9286"},{"firstName":"Scott","lastName":"Lehman","initials":"S.J.","orcId":null}],"version":"1.0","funding":[],"studyNotes":null,"onlineResourceLink":"https://www.ncei.noaa.gov/access/paleo-search/study/6285","difMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-recon-6285.xml","isoMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/iso/xml/noaa-recon-6285.xml","originalSource":null,"dataTypeInformation":"https://www.ncei.noaa.gov/products/paleoclimatology/climate-reconstruction","studyCode":null,"scienceKeywords":["Sea Surface Temperature Reconstruction"],"reconstruction":"Y","contributionDate":"2002-07-01","entryId":"noaa-recon-6285","earliestYearBP":60000,"mostRecentYearBP":30000,"earliestYearCE":-58050,"mostRecentYearCE":-28050,"publication":[{"author":{"name":"Sachs, J.P. and S.J. Lehman"},"pubYear":1999,"title":"Subtropical North Atlantic Temperatures 60,000 to 30,000 Years Ago","journal":"Science","volume":"286","edition":null,"issue":"5440","pages":"756-759","reportNumber":null,"citation":"Sachs, J.P. and S.J. Lehman. 1999. Subtropical North Atlantic Temperatures 60,000 to 30,000 Years Ago. Science, 286(5440), 756-759. doi: 10.1126/science.286.5440.756","type":"publication","identifier":{"type":"doi","id":"10.1126/science.286.5440.756","url":"http://dx.doi.org/10.1126/science.286.5440.756"},"abstract":"A reconstruction of sea surface temperature based on alkenone unsaturation ratios in sediments of the Bermuda Rise provides a detailed record of subtropical climate from 60,000 to 30,000 years ago. Northern Sargasso Sea temperatures changed repeatedly by 2° to 5°C, covarying with high-latitude temperatures that were previously inferred from Greenland ice cores. The largest temperature increases were comparable in magnitude to the full glacial-Holocene warming at the site. Abrupt cold reversals of 3° to 5°C, lasting less than 250 years, occurred during the onset of two such events (Greenland interstadials 8 and 12), suggesting that the largest, most rapid warmings were especially unstable.","pubRank":"1"}],"site":[{"NOAASiteId":"19194","siteName":"MD95-2036","siteCode":null,"mappable":"Y","locationName":"Ocean>Atlantic Ocean>North Atlantic Ocean","geo":{"geoType":"Feature","geometry":{"type":"POINT","coordinates":["33.68","-57.63"]},"properties":{"southernmostLatitude":"33.68","northernmostLatitude":"33.68","westernmostLongitude":"-57.63","easternmostLongitude":"-57.63","minElevationMeters":"-4583","maxElevationMeters":"-4583"}},"paleoData":[{"dataTableName":"Sachs1999","NOAADataTableId":"38399","earliestYear":60000,"mostRecentYear":30000,"timeUnit":"cal yr BP","earliestYearBP":60000,"mostRecentYearBP":30000,"earliestYearCE":-58050,"mostRecentYearCE":-28050,"coreLengthMeters":null,"dataTableNotes":null,"species":[],"dataFile":[{"fileUrl":"https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/sachs1999/sachs1999.txt","urlDescription":"Original Data and Full Metadata","linkText":"sachs1999.txt","variables":[{"cvDataType":"CLIMATE RECONSTRUCTIONS|PALEOCEANOGRAPHY","cvWhat":"depth variable>depth","cvMaterial":null,"cvError":null,"cvUnit":"length unit>centimeter","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":null},{"cvDataType":"CLIMATE RECONSTRUCTIONS|PALEOCEANOGRAPHY","cvWhat":"age variable>age","cvMaterial":null,"cvError":null,"cvUnit":"time unit>age unit>calendar kiloyear before present","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":null},{"cvDataType":"CLIMATE RECONSTRUCTIONS|PALEOCEANOGRAPHY","cvWhat":"earth system variable>temperature variable>temperature>sea water temperature>sea surface temperature","cvMaterial":"reconstruction material>organic compound index>alkenone unsaturation index","cvError":null,"cvUnit":"temperature unit>degree Celsius","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"from the regression relation of Prahl and others","cvFormat":"Numeric","cvShortName":null}],"NOAAKeywords":["earth science>paleoclimate>reconstructions"]}]}]}],"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}