{"NOAAStudyId":"10551","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":"2011-03-18","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-10551.xml","doi":null,"earliestYearBP":3087400,"earliestYearCE":-3085450,"entryId":"noaa-ocean-10551","funding":[{"fundingAgency":"US National Science Foundation","fundingGrant":"OCE502609"}],"investigators":"Medina-Elizalde, M.; Lea, D.W.","mostRecentYearBP":2336900,"mostRecentYearCE":-2334950,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/10551","originalSource":null,"publication":[{"abstract":"Late Pliocene foraminiferal Mg/Ca and d18O records from Ocean \nDrilling Program Hole 806B in the western equatorial Pacific (WEP) \nreveal warm pool climate evolution during the onset of Northern \nHemisphere glaciation, 3.1-2.3 Myr B.P. Mg/Ca data indicate an \naverage late Pliocene sea surface temperature (SST) of 27.8°C, \na small long-term cooling of 0.3°C between 3.1 and 2.3 Ma, \nand a glacial-interglacial (G-I) SST range of 2°C throughout \nthis time interval. For comparison, Pleistocene SSTs at this site \nover the last 0.9 Myr average 27.7°C with a G-I range of 3°C. \nOrbital-scale variability in Hole 806B SSTs during the late \nPliocene occurs predominantly at ~100 ka, in contrast to \nforaminiferal d18O records, which show a dominant 41 kyr period. \nVariability at a 41 kyr period, out of phase with local annual \ninsolation changes driven by obliquity, is also observed in the \nnew WEP SST record. The WEP SST record suggests that an ~3°C \nequatorial Pacific SST zonal gradient prevailed during the \nlate Pliocene, compatible with a weaker Walker circulation. \nAdjustment of Hole 806B SSTs for past changes in seawater Mg/Ca \nsuggests that SSTs higher than 30°C prevailed at 3 Myr B.P., \nfollowed by a progressive cooling of the warm pool through \nthe late Pliocene. The characteristics of late Pliocene tropical \nclimate evolution suggest that atmospheric greenhouse gas forcing \nplayed a major role in driving the observed G-I SST changes. \n","author":null,"citation":"Medina-Elizalde, M. and D.W. Lea. 2010. \nLate Pliocene equatorial Pacific. \nPaleoceanography, 25, PA2208, doi:10.1029/2009PA001780 \n","edition":null,"identifier":{"id":"10.1029/2009PA001780","type":"doi","url":"http://dx.doi.org/10.1029/2009PA001780"},"issue":null,"journal":"Paleoceanography","pages":null,"pubRank":"1","pubYear":2010,"reportNumber":null,"title":"Late Pliocene equatorial Pacific","type":"publication","volume":null}],"reconstruction":"Y","scienceKeywords":["Warm Pool","Sea Surface Temperature Reconstruction"],"site":[{"NOAASiteId":"19119","geo":{"geoType":"Feature","geometry":{"coordinates":[".32","159.35"],"type":"POINT"},"properties":{"easternmostLongitude":"159.35","maxElevationMeters":"-2520","minElevationMeters":"-2520","northernmostLatitude":"0.32","southernmostLatitude":"0.32","westernmostLongitude":"159.35"}},"locationName":"Ocean>Pacific Ocean>North Pacific Ocean","mappable":"Y","paleoData":[{"NOAADataTableId":"19348","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleocean>geochemistry","earth science>paleoclimate>paleocean>oxygen isotopes","earth science>paleoclimate>paleocean>reconstruction"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/medina-elizalde2010/medina-elizalde2010.txt","linkText":"medina-elizalde2010.txt","urlDescription":"Original Data and Full Metadata","variables":[{"cvAdditionalInfo":"G. ruber","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":"G. ruber","cvDataType":"CLIMATE RECONSTRUCTIONS|PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"reconstruction material>isotope ratio>delta 18O","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":"G. ruber","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":"per mil","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":"G. ruber","cvDataType":"CLIMATE RECONSTRUCTIONS|PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>sea water","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil","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":"meter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":"corrected","cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"meter","cvWhat":"depth variable>depth"},{"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":null,"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","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":null,"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":"dimensionless","cvWhat":"chemical composition>element or compound ratio>magnesium/calcium"}]},{"NOAAKeywords":["earth science>paleoclimate>paleocean>geochemistry","earth science>paleoclimate>paleocean>reconstruction","earth science>paleoclimate>paleocean>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/medina-elizalde2010/medina-elizalde2010.xls","linkText":"medina-elizalde2010.xls","urlDescription":"Original Data and Full Metadata","variables":[]}],"dataTableName":"ODP806B-ME","dataTableNotes":null,"earliestYear":3087400,"earliestYearBP":3087400,"earliestYearCE":-3085450,"mostRecentYear":2336900,"mostRecentYearBP":2336900,"mostRecentYearCE":-2334950,"species":[],"timeUnit":"cal yr BP"}],"siteName":"ODP 806B"}],"studyCode":null,"studyName":"Western Equatorial Pacific ODP806B Late Pliocene Mg/Ca, d18O, and SST","studyNotes":"Planktonic foraminiferal (G. ruber) Mg/Ca and d18O, plus Sea Surface \nTemperature (SST) and d18Oseawater estimates, for the Late Pliocene  \nfrom Western Equatorial Pacific sediment core ODP806B. \n\nSST estimated from G. ruber Mg/Ca by the method of Lea et al. [2000]. \nd18O seawater record was calculated by removing the temperature \ncomponent in planktonic d18O using the Mg/Ca derived SSTs and the \npaleotemperature equation of Bemis et al., [1998].\n\n","version":"1.0","xmlId":"9215"}