{"NOAAStudyId":"18035","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":"2015-02-20","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-18035.xml","doi":null,"earliestYearBP":1412000,"earliestYearCE":-1410050,"entryId":"noaa-ocean-18035","funding":[],"investigators":"Dyez, K.A.; Ravelo, A.C.","mostRecentYearBP":45000,"mostRecentYearCE":-43050,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/18035","originalSource":null,"publication":[{"abstract":"In the late Pleistocene, the atmospheric carbon dioxide concentration (pCO2) is thought to be a primary driving force for tropical sea surface temperature (SST) change because glacial-interglacial changes in tropical Pacific SST covary with pCO2. However, if the regional radiative effects of pCO2 were the only agent of change, tropical SST gradients should have remained similar as pCO2 varied with time. Instead, a new record of SST from the west Pacific shows that tropical SST gradients were different, even reversed, in the past, suggesting an important role for dynamical circulation changes. Specifically, changes in the temperature of upwelled source water, in addition to local pCO2 forcing, influenced tropical Pacific SST. These dynamical changes, rather than pCO2, may have shifted the background state of the tropics and even helped set the stage for the mid-Pleistocene transition.","author":{"name":"Dyez, K.A. and A.C. Ravelo"},"citation":"Dyez, K.A. and A.C. Ravelo. 2014. Dynamical changes in the tropical Pacific warm pool and zonal SST gradient during the Pleistocene. Geophysical Research Letters, 41(21), 7626-7633. doi: 10.1002/2014GL061639","edition":null,"identifier":{"id":"10.1002/2014GL061639","type":"doi","url":"http://dx.doi.org/10.1002/2014GL061639"},"issue":"21","journal":"Geophysical Research Letters","pages":"7626-7633","pubRank":"1","pubYear":2014,"reportNumber":null,"title":"Dynamical changes in the tropical Pacific warm pool and zonal SST gradient during the Pleistocene","type":"publication","volume":"41"}],"reconstruction":"Y","scienceKeywords":["Sea Surface Temperature Reconstruction","Warm Pool"],"site":[{"NOAASiteId":"54161","geo":{"geoType":"Feature","geometry":{"coordinates":["5.5572","172.3443"],"type":"POINT"},"properties":{"easternmostLongitude":"172.3443","maxElevationMeters":"-1254","minElevationMeters":"-1254","northernmostLatitude":"5.5572","southernmostLatitude":"5.5572","westernmostLongitude":"172.3443"}},"locationName":"Ocean>Pacific Ocean>Western Pacific Ocean","mappable":"Y","paleoData":[{"NOAADataTableId":"28374","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleocean>oxygen isotopes","earth science>paleoclimate>paleocean>reconstruction","earth science>paleoclimate>paleocean>geochemistry"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/dyez2014-grl/dyez2014-grl.txt","linkText":"ODP871 d18O, Mg/Ca and SST Reconstruction","urlDescription":"Formatted Text File","variables":[{"cvAdditionalInfo":"Using formula from Dyez and Ravelo(2013); Mg/Ca Globigerinoides ruber white","cvDataType":"CLIMATE RECONSTRUCTIONS|PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"reconstruction material>element or compound ratio>magnesium/calcium","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":"calendar kiloyear before present","cvWhat":"age variable>age"},{"cvAdditionalInfo":"250-355 µm","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"biological material>organism>foraminifer>benthic foraminifer>calcareous benthic foraminifer>Uvigerina sp.","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VPDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":"250-355 µm","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"biological material>organism>foraminifer>planktic foraminifer>Globigerinoides sp.>Globigerinoides ruber>Globigerinoides ruber white","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"millimole per mole","cvWhat":"chemical composition>element or compound ratio>magnesium/calcium"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"meter","cvWhat":"depth variable>depth"}]}],"dataTableName":"ODP871 Dyez14","dataTableNotes":"Age of sample based on alignment of benthic d18O record with a global benthic d18O stack [Liseicki and Raymo, 2005]. SST = ln [(Mg/Ca + 0.259 x Water depth (km) + 0.537)/0.38]/0.09 [Dyez and Ravelo, 2013]. Notes in data table show that samples are from ODP Site 871 followed by Hole, Core(Type), Section, Half, and Interval, listed in cm.","earliestYear":1412000,"earliestYearBP":1412000,"earliestYearCE":-1410050,"mostRecentYear":45000,"mostRecentYearBP":45000,"mostRecentYearCE":-43050,"species":[],"timeUnit":"cal yr BP"}],"siteName":"ODP 871"}],"studyCode":null,"studyName":"Western Pacific Warm Pool Oxygen Isotope and Mg/Ca Data and SST Reconstruction during the Pleistocene","studyNotes":"These are data from the western Pacific warm pool, derived from sediments of Site 871, retrieved as part of ODP drilling. The dataset contains both oxygen isotopic values measured on benthic foraminifera and Mg/Ca values measured on planktic foraminifera. Included is the estimated sea surface temperature value, derived from planktic Mg/Ca.","version":"1.0","xmlId":"15737"}