noaa-ocean-2602 Caribbean Foraminiferal Mg/Ca, d18OCalcite, and Paleosalinity Schmidt, M.W.; Spero, H.J.; Lea, D.W. Caribbean Foraminiferal Mg/Ca, d18OCalcite, and Paleosalinity 2004-07-01 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/2602 Investigator M.W. Schmidt Investigator H.J. Spero Investigator D.W. Lea earth science paleoclimate paleoceanography magnesium/calcium,Globigerinoides ruber white,null,millimole per mole,null,paleoceanography,null,null,N,null earth science paleoclimate climate reconstructions|paleoceanography sea surface temperature,magnesium/calcium,null,degree Celsius,null,climate reconstructions|paleoceanography,null,null,N,null earth science paleoclimate climate reconstructions|paleoceanography delta 18O,delta 18O|magnesium/calcium|sea water,null,per mil PDB,null,climate reconstructions|paleoceanography,null,null,N,null earth science paleoclimate paleoceanography age,null,null,calendar year before present,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography depth,null,null,centimeter,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography delta 18O,Globigerinoides ruber white,null,per mil PDB,null,paleoceanography,null,null,N,null earth science paleoclimate paleocean trace metals in carbonates earth science paleoclimate paleocean oxygen isotopes earth science paleoclimate paleocean reconstruction earth science paleoclimate paleocean age control geoscientificInformation Other Hydroclimate Reconstruction Sea Surface Temperature Reconstruction 135900 14C yr BP 2780 14C yr BP 135900 cal yr BP 2900 cal yr BP Complete 11.57 12.75 -78.73 -78.42 -3623 -2827 Ocean Pacific Ocean North Pacific Ocean ODP 999A>LATITUDE 12.75>LONGITUDE -78.73 Ocean Pacific Ocean North Pacific Ocean VM28-22>LATITUDE 11.57>LONGITUDE -78.42 None 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. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII Schmidt, M.W., H.J. Spero, and D.W. Lea. 2004. Links between salinity variation in the Caribbean and North Atlantic thermohaline circulation. Nature 428:160-163.

Variations in the strength of North Atlantic Ocean thermohaline circulation have been linked to rapid climate changes during the last glacial cycle through oscillations in North Atlantic Deep Water formation and northward oceanic heat flux. The strength of the thermohaline circulations depends on the supply of warm, salty water to the North Atlantic, which, after losing heat to the atmosphere, produces the dense water masses that sink to great depths and circulate back south. Here we analyse two Caribbean Sea sediment cores, combining Mg/Ca palaeothermometry with measurements of oxygen isotopes in foraminiferal calcite in order to reconstruct tropical Atlantic surface salinity during the last glacial cycle. We find that the Caribbean salinity oscillated between saltier conditions during the cold oxygen isotope stages 2, 4 and 6, and lower salinities during the warm stages 3 and 5, covarying with the strength of North Atlantic Deep Water formation. At the initiation of the Bolling/Allerod warm interval, Caribbean surface salinity decreased abruptly, suggesting that the advection of salty tropical waters into the North Atlantic amplified thermohaline circulation and contributed to high-latitude warming.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/schmidt2004 GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/vm28-122-tab.txt GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp999a-tab.txt USA/NOAA DIF Version 9.8.4 2019-06-07 2019-06-07