{"NOAAStudyId":"2638","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":"2005-07-01","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-2638.xml","doi":null,"earliestYearBP":640052,"earliestYearCE":-638102,"entryId":"noaa-ocean-2638","funding":[],"investigators":"Schneider-Mor, A.; Yam, R.; Bianchi, C.; Kunz-Pirrung, M.; Gersonde, R.; Shemesh, A.","mostRecentYearBP":26807,"mostRecentYearCE":-24857,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/2638","originalSource":null,"publication":[{"abstract":"High-resolution d13C and d15N records of diatom-bound organic matter (d13CD, d15ND) from ODP site 1094, South of the Polar Front, are combined with reconstructions of summer sea surface temperature and winter sea-ice to establish changes in surface water characteristics associated with the main climatic events of the past 640 ka. The six glacial-interglacial d13CD cycles show excellent agreement with SPECMAP d18O and Vostok CO2 content, suggesting that global physical processes rather than local biological factors were the main influences on d13CD. By contrast, there is weak correspondence between the Vostok dust record and the d13CD and d15ND records. The data do not support the hypothesis that glacial iron fertilization of the Southern Ocean was the main factor lowering atmospheric CO2, if dust accumulation represents iron input. The records indicate that sea ice cover, water column stratification and iron addition from deep water mixing are more likely to explain our observations.","author":null,"citation":"Schneider-Mor, A., R. Yam, C. Bianchi, M. Kunz-Pirrung, R. Gersonde, and A. Shemesh. 2005. Diatom stable isotopes, sea ice presence and sea surface temperature records of the past 640 ka in the Atlantic sector of the Southern Ocean. Geophysical Research Letters, Vol. 32, No. 10, L10704.","edition":null,"identifier":null,"issue":null,"journal":"Geophysical Research Letters","pages":null,"pubRank":"1","pubYear":2005,"reportNumber":null,"title":"Diatom stable isotopes, sea ice presence and sea surface temperature records of the past 640 ka in the Atlantic sector of the Southern Ocean","type":"publication","volume":null}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"19271","geo":{"geoType":"Feature","geometry":{"coordinates":["-53.18035","5.130333"],"type":"POINT"},"properties":{"easternmostLongitude":"5.130333","maxElevationMeters":"-2807","minElevationMeters":"-2807","northernmostLatitude":"-53.18035","southernmostLatitude":"-53.18035","westernmostLongitude":"5.130333"}},"locationName":"Ocean>Atlantic Ocean>South Atlantic Ocean","mappable":"Y","paleoData":[{"NOAADataTableId":"4356","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleocean>age control","earth science>paleoclimate>paleocean>carbon isotopes","earth science>paleoclimate>paleocean>nitrogen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/schneider-mor2005","linkText":"schneider-mor2005","urlDescription":"Original Data and Full Metadata","variables":[]},{"NOAAKeywords":["earth science>paleoclimate>paleocean>age control","earth science>paleoclimate>paleocean>nitrogen isotopes","earth science>paleoclimate>paleocean>carbon isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp1094-tab.txt","linkText":"odp1094-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":"measured  on diatom-bound organic matter","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"biological material>bulk biological material>organic matter","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil PDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 13C"},{"cvAdditionalInfo":"measured  on diatom-bound organic matter","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"biological material>bulk biological material>organic matter","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil","cvWhat":"chemical composition>isotope>isotope ratio>delta 15N"},{"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"}]}],"dataTableName":"ODP1094","dataTableNotes":"Isotopes measured on diatom-bound organic matter.","earliestYear":640052,"earliestYearBP":640052,"earliestYearCE":-638102,"mostRecentYear":22273,"mostRecentYearBP":26807,"mostRecentYearCE":-24857,"species":[],"timeUnit":"14C yr BP"}],"siteName":"ODP1094"}],"studyCode":null,"studyName":"ODP1094 South Atlantic Diatom Carbon and Nitrogen Isotope Data","studyNotes":null,"version":"1.0","xmlId":"1708"}