{"NOAAStudyId":"2603","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":"1995-07-01","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-2603.xml","doi":null,"earliestYearBP":83906,"earliestYearCE":-81956,"entryId":"noaa-ocean-2603","funding":[],"investigators":"Zhao, M.; Beveridge, N.A.S.; Shackleton, N.J.; Sarnthein, M.; Eglinton, G.","mostRecentYearBP":0,"mostRecentYearCE":1950,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/2603","originalSource":null,"publication":[{"abstract":"The molecular stratigraphy of BOFS core 31K and ODP Hole 658C has been studied for C37 alkenone abundances over the past 80 kaat high resolution (~circa 200-500 years).  The derived Uk37 sea surface temperature record for both cores shows a range of temperatures from about 18C during the last glacial to 21.5C during the early Holocene.  Both records also reveal changes in SST as much as 2C - 4C over a few hundred years, which correlate well with similar abrupt climatic changes observed in cores from elsewhere in the NE Atlantic, associated with \"\"Heinrich events\"\". Our results indicate that meltwater produced by these ice-rafting events was transmitted southward by the Canary Current, where it had considerable impact on SSTs in the subtropical eastern Atlantic.","author":null,"citation":"Zhao, M., N.A.S. Beveridge, N.J. Shackleton, M. Sarnthein, and G. Eglinton. 1995. Molecular stratigraphy of cores off northwest Africa: Sea surface temperature history over the last 80 ka. Paleoceanography 10(3):661-675.","edition":null,"identifier":null,"issue":null,"journal":"Paleoceanography","pages":null,"pubRank":"1","pubYear":1995,"reportNumber":null,"title":"Molecular stratigraphy of cores off northwest Africa: Sea surface temperature history over the last 80 ka","type":"publication","volume":null}],"reconstruction":"Y","scienceKeywords":null,"site":[{"NOAASiteId":"19154","geo":{"geoType":"Feature","geometry":{"coordinates":["20.75","-18.58"],"type":"POINT"},"properties":{"easternmostLongitude":"-18.58","maxElevationMeters":"-2263","minElevationMeters":"-2263","northernmostLatitude":"20.75","southernmostLatitude":"20.75","westernmostLongitude":"-18.58"}},"locationName":"Ocean>Atlantic Ocean>North Atlantic Ocean","mappable":"Y","paleoData":[{"NOAADataTableId":"4287","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleocean>age control","earth science>paleoclimate>paleocean>reconstruction","earth science>paleoclimate>paleocean>biomarkers"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/zhao1995","linkText":"zhao1995","urlDescription":"Original Data and Full Metadata","variables":[]},{"NOAAKeywords":["earth science>paleoclimate>paleocean>biomarkers","earth science>paleoclimate>paleocean>age control","earth science>paleoclimate>paleocean>reconstruction"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp658cz-tab.txt","linkText":"odp658cz-tab.txt","urlDescription":"Alternate Format Data","variables":[{"cvAdditionalInfo":null,"cvDataType":"CLIMATE RECONSTRUCTIONS|PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"reconstruction material>organic compound index>alkenone unsaturation index","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"degree Celsius","cvWhat":"earth system variable>temperature variable>temperature>sea water temperature>sea surface temperature"},{"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":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":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar year before present","cvWhat":"age variable>age"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"dimensionless","cvWhat":"chemical composition>compound>organic compound>organic compound index>alkenone unsaturation index>alkenone unsaturation index Uk37 prime"}]}],"dataTableName":"ODP658CZ","dataTableNotes":"For ODP 658C, the age scale has been modified several times. The most recent C14 agescale is used here, not the one published in Zhao et al. 1995.","earliestYear":83906,"earliestYearBP":83906,"earliestYearCE":-81956,"mostRecentYear":46,"mostRecentYearBP":0,"mostRecentYearCE":1950,"species":[],"timeUnit":"14C yr BP"}],"siteName":"ODP658C"},{"NOAASiteId":"19234","geo":{"geoType":"Feature","geometry":{"coordinates":["19","-20.17"],"type":"POINT"},"properties":{"easternmostLongitude":"-20.17","maxElevationMeters":"-3300","minElevationMeters":"-3300","northernmostLatitude":"19","southernmostLatitude":"19","westernmostLongitude":"-20.17"}},"locationName":"Ocean>Atlantic Ocean>North Atlantic Ocean","mappable":"Y","paleoData":[{"NOAADataTableId":"4286","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleocean>biomarkers","earth science>paleoclimate>paleocean>age control","earth science>paleoclimate>paleocean>reconstruction"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/zhao1995","linkText":"zhao1995","urlDescription":"Original Data and Full Metadata","variables":[]},{"NOAAKeywords":["earth science>paleoclimate>paleocean>age control","earth science>paleoclimate>paleocean>biomarkers","earth science>paleoclimate>paleocean>reconstruction"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/bofs-31k-tab.txt","linkText":"bofs-31k-tab.txt","urlDescription":"Alternate Format Data","variables":[{"cvAdditionalInfo":null,"cvDataType":"CLIMATE RECONSTRUCTIONS|PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"reconstruction material>organic compound index>alkenone unsaturation index","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"degree Celsius","cvWhat":"earth system variable>temperature variable>temperature>sea water temperature>sea surface temperature"},{"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":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":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"microgram per gram","cvWhat":"chemical composition>compound>organic compound>organooxygen compound>ketone>alkenone>C37 alkenone"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"dimensionless","cvWhat":"chemical composition>compound>organic compound>organic compound index>alkenone unsaturation index>alkenone unsaturation index Uk37 prime"}]}],"dataTableName":"BOFS-31K","dataTableNotes":null,"earliestYear":76150,"earliestYearBP":76150,"earliestYearCE":-74200,"mostRecentYear":600,"mostRecentYearBP":579,"mostRecentYearCE":1371,"species":[],"timeUnit":"14C yr BP"}],"siteName":"BOFS-31K"}],"studyCode":null,"studyName":"Eastern Tropical Atlantic Alkenones and Sea Surface Temperatures ","studyNotes":null,"version":"1.0","xmlId":"1674"}