{"NOAAStudyId":"2583","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":"2002-07-01","dataPublisher":"NOAA","dataType":"PALEOCEANOGRAPHY","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/paleoceanography","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-ocean-2583.xml","doi":null,"earliestYearBP":150000,"earliestYearCE":-148050,"entryId":"noaa-ocean-2583","funding":[],"investigators":"Spero, H.J.; Lea, D.W.","mostRecentYearBP":1100,"mostRecentYearCE":850,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/2583","originalSource":null,"publication":[{"abstract":"The occurrence of carbon isotope minima at the beginning of glacial terminations is a common feature of planktic foraminifera carbon isotopic records from the Indo-Pacific, sub-Antarctic, and South Atlantic. We use the delta 13C record of a thermocline-dwelling foraminifera, Neogloboquadrina dutertrei, and surface temperature estimates from the eastern equatorial Pacific to demonstrate that the onset of delta 13C minimum events and the initiation of Southern Ocean warming occurred simultaneously. Timing agreement between the marine record and the delta 13C minimum in an Antarctic atmospheric record suggests that the deglacial events were a response to the breakdown of surface water stratification, renewed Circumpolar Deep Water upwelling, and advection of low delta 13C waters to the convergence zone at the sub-Antarctic front. On the basis of age agreement between the absolute delta 13C minimum in surface records and the shift from low to high delta 13C in the deep South Atlantic, we suggest that the delta 13C rise that marks the end of the carbon isotope minima was due to the resumption of North Atlantic Deep Water influence in the Southern Ocean.","author":null,"citation":"Spero, H.J., and D.W. Lea. 2002. The cause of carbon isotope minimum events on glacial terminations. Science 296:522-525.","edition":null,"identifier":null,"issue":null,"journal":"Science","pages":null,"pubRank":"1","pubYear":2002,"reportNumber":null,"title":"The cause of carbon isotope minimum events on glacial terminations","type":"publication","volume":null}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"19120","geo":{"geoType":"Feature","geometry":{"coordinates":["2.25","-90.95"],"type":"POINT"},"properties":{"easternmostLongitude":"-90.95","maxElevationMeters":"-2348","minElevationMeters":"-2348","northernmostLatitude":"2.25","southernmostLatitude":"2.25","westernmostLongitude":"-90.95"}},"locationName":"Ocean>Pacific Ocean>North Pacific Ocean","mappable":"Y","paleoData":[{"NOAADataTableId":"4221","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleocean>oxygen isotopes","earth science>paleoclimate>paleocean>age control","earth science>paleoclimate>paleocean>carbon isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/spero2002","linkText":"spero2002","urlDescription":"Original Data and Full Metadata","variables":[]},{"NOAAKeywords":["earth science>paleoclimate>paleocean>age control","earth science>paleoclimate>paleocean>oxygen isotopes","earth science>paleoclimate>paleocean>carbon isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/t16319sp-tab.txt","linkText":"t16319sp-tab.txt","urlDescription":"Alternate Format Data","variables":[{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"centimeter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":"250 - 355 microns","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"biological material>organism>foraminifer>planktic foraminifer>Globigerinoides sp.>Globigerinoides ruber","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil PDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 13C"},{"cvAdditionalInfo":"> 500 microns","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"biological material>organism>foraminifer>planktic foraminifer>Neogloboquadrina sp.>Neogloboquadrina dutertrei","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil PDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"radiocarbon year before present","cvWhat":"age variable>age"},{"cvAdditionalInfo":"> 500 microns","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"biological material>organism>foraminifer>planktic foraminifer>Neogloboquadrina sp.>Neogloboquadrina dutertrei","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil PDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 13C"}]}],"dataTableName":"T16319SP","dataTableNotes":"New data from Neogloboquadrina dutertrei and Gloiberinoides ruber, combined with previously published G. ruber Mg/Ca and d18O data (Lea et al., 2000) demonstrate deglacial carbon isotope minimum events initiate with tropical warming, and directly link Southern Ocean deglaciation circulation changes with near surface tropical carbon isotope excursions.","earliestYear":150000,"earliestYearBP":150000,"earliestYearCE":-148050,"mostRecentYear":1100,"mostRecentYearBP":1100,"mostRecentYearCE":850,"species":[],"timeUnit":"cal yr BP"}],"siteName":"TR163-19"}],"studyCode":null,"studyName":"Equatorial Pacific Planktonic Foraminifera Carbon and Oxygen Isotope Data ","studyNotes":null,"version":"1.0","xmlId":"1582"}