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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":"Schmidt, M.W.; Vautravers, M.J.; Spero, H.J.","investigatorDetails":[{"firstName":"Matthew","lastName":"Schmidt","initials":"M.W.","orcId":"0000-0001-6362-7845"},{"firstName":"Maryline","lastName":"Vautravers","initials":"M.J.","orcId":null},{"firstName":"Howard","lastName":"Spero","initials":"H.J.","orcId":"0000-0001-5465-8607"}],"version":"1.0","funding":[],"studyNotes":null,"onlineResourceLink":"https://www.ncei.noaa.gov/access/paleo-search/study/6360","difMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-recon-6360.xml","isoMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/iso/xml/noaa-recon-6360.xml","originalSource":null,"dataTypeInformation":"https://www.ncei.noaa.gov/products/paleoclimatology/climate-reconstruction","studyCode":null,"scienceKeywords":["Other Hydroclimate Reconstruction","Sea Surface Temperature Reconstruction"],"reconstruction":"Y","contributionDate":"2006-07-01","entryId":"noaa-recon-6360","earliestYearBP":59000,"mostRecentYearBP":45000,"earliestYearCE":-57050,"mostRecentYearCE":-43050,"publication":[{"author":{"name":"Schmidt, M.W., M.J. Vautravers, and H.J. Spero"},"pubYear":2006,"title":"Rapid subtropical North Atlantic salinity oscillations across Dansgaard-Oeschger cycles","journal":"Nature","volume":"443","edition":null,"issue":"7111","pages":"561-564","reportNumber":null,"citation":"Schmidt, M.W., M.J. Vautravers, and H.J. Spero. 2006. Rapid subtropical North Atlantic salinity oscillations across Dansgaard-Oeschger cycles. Nature, 443(7111), 561-564. doi: 10.1038/nature05121","type":"publication","identifier":{"type":"doi","id":"10.1038/nature05121","url":"http://dx.doi.org/10.1038/nature05121"},"abstract":"Geochemical and sedimentological evidence suggest that the rapid climate warming oscillations of the last ice age, the DansgaardOeschger cycles, were coupled to fluctuations in North Atlantic meridional overturning circulation through its regulation of poleward heat flux. The balance between cold meltwater from the north and warm, salty subtropical gyre waters from the south influenced the strength and location of North Atlantic overturning circulation during this period of highly variable climate. Here we investigate how rapid reorganizations of the oceanatmosphere system across these cycles are linked to salinity changes in the subtropical North Atlantic gyre. We combine Mg/Ca palaeothermometry and oxygen isotope ratio measurements on planktonic foraminifera across four DansgaardOeschger cycles (spanning 45.959.2	kyr ago) to generate a seawater salinity proxy record from a subtropical gyre deep-sea sediment core. We show that North Atlantic gyre surface salinities oscillated rapidly between saltier stadial conditions and fresher interstadials, covarying with inferred shifts in the Tropical Atlantic hydrologic cycle and North Atlantic overturning circulation. These salinity oscillations suggest a reduction in precipitation into the North Atlantic and/or reduced export of deep salty thermohaline waters during stadials. We hypothesize that increased stadial salinities preconditioned the North Atlantic Ocean for a rapid return to deep overturning circulation and high-latitude warming by contributing to increased North Atlantic surface-water density on interstadial transitions.","pubRank":"1"}],"site":[{"NOAASiteId":"19318","siteName":"ODP 1060","siteCode":null,"mappable":"Y","locationName":"Ocean>Atlantic Ocean>North Atlantic Ocean","geo":{"geoType":"Feature","geometry":{"type":"POINT","coordinates":["30.766667","-74.466667"]},"properties":{"southernmostLatitude":"30.766667","northernmostLatitude":"30.766667","westernmostLongitude":"-74.466667","easternmostLongitude":"-74.466667","minElevationMeters":"-3481","maxElevationMeters":"-3481"}},"paleoData":[{"dataTableName":"Schmidt2006b","NOAADataTableId":"38647","earliestYear":59000,"mostRecentYear":45000,"timeUnit":"cal yr 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