{"NOAAStudyId":"18915","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":"2015-06-19","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-18915.xml","doi":null,"earliestYearBP":4807253,"earliestYearCE":-4805303,"entryId":"noaa-ocean-18915","funding":[{"fundingAgency":"US National Science Foundation","fundingGrant":"OCE-623419, OCE-1204254"}],"investigators":"Ford, H.L.; Ravelo, A.C.; Dekens, P.S.; LaRiviere, J.P.; Wara, M.W.","mostRecentYearBP":24000,"mostRecentYearCE":-22050,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/18915","originalSource":null,"publication":[{"abstract":"The tropical Pacific thermocline strength, depth, and tilt are critical to tropical mean state and variability. During the early Pliocene (~3.5 to 4.5 Ma), the Eastern Equatorial Pacific (EEP) thermocline was deeper and the cold tongue was warmer than today, which resulted in a mean state with a reduced zonal sea surface temperature gradient or El Padre. However, it is unclear whether the deep thermocline was a local feature of the EEP or a basin-wide condition with global implications. Our measurements of Mg/Ca of Globorotalia tumida in a western equatorial Pacific site indicate Pliocene subsurface temperatures warmer than today; thus, El Padre included a basin-wide thermocline that was relatively warm, deep, and weakly tilted. At ~4 Ma, thermocline steepening was coupled to cooling of the cold tongue. Since ~4 Ma, the basin-wide thermocline cooled/shoaled gradually, with implications for thermocline feedbacks in tropical dynamics and the interpretation of TEX86-derived temperatures.","author":{"name":"Heather L. Ford, A. Christina Ravelo, Petra S. Dekens, Jonathan P. LaRiviere and Michael W. Wara"},"citation":"Heather L. Ford, A. Christina Ravelo, Petra S. Dekens, Jonathan P. LaRiviere and Michael W. Wara. 2015. The evolution of the equatorial thermocline and the early Pliocene El Padre mean state. Geophysical Research Letters, 42. doi: 10.1002/2015GL064215","edition":null,"identifier":{"id":"10.1002/2015GL064215","type":"doi","url":"http://dx.doi.org/10.1002/2015GL064215"},"issue":null,"journal":"Geophysical Research Letters","pages":null,"pubRank":"1","pubYear":2015,"reportNumber":null,"title":"The evolution of the equatorial thermocline and the early Pliocene El Padre mean state","type":"publication","volume":"42"}],"reconstruction":"Y","scienceKeywords":null,"site":[{"NOAASiteId":"56505","geo":{"geoType":"Feature","geometry":{"coordinates":[".318333","159.361667"],"type":"POINT"},"properties":{"easternmostLongitude":"159.361667","maxElevationMeters":"-2520","minElevationMeters":"-2520","northernmostLatitude":"0.318333","southernmostLatitude":"0.318333","westernmostLongitude":"159.361667"}},"locationName":"Ocean>Pacific Ocean>Western Pacific Ocean","mappable":"Y","paleoData":[{"NOAADataTableId":"29314","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleocean>geochemistry","earth science>paleoclimate>paleocean>reconstruction"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ford2015b/ford2015b.txt","linkText":"ODP806 G. tumida Mg/Ca and Subsurface Temperature","urlDescription":"Data File","variables":[{"cvAdditionalInfo":"sample info","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Character","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":null,"cvWhat":"sampling metadata>notes"},{"cvAdditionalInfo":"Mohtani et al. 2011 calibration; based on Globorotalia tumida (depth habitat ~50-100m)","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"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":"composited","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":"million years ago","cvWhat":"age variable>age"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"biological material>organism>foraminifer>planktic foraminifer>Globorotalia sp.>Globorotalia tumida","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"millimole per mole","cvWhat":"chemical composition>element or compound ratio>magnesium/calcium"}]}],"dataTableName":"Ford2015ODP806MgCa","dataTableNotes":null,"earliestYear":4807253,"earliestYearBP":4807253,"earliestYearCE":-4805303,"mostRecentYear":24000,"mostRecentYearBP":24000,"mostRecentYearCE":-22050,"species":[],"timeUnit":"cal yr BP"}],"siteName":"ODP 806"}],"studyCode":null,"studyName":"Western Equatorial Pacific Pliocene Mg/Ca and Subsurface Temperature","studyNotes":"Mg/Ca values from Globorotalia tumida and reconstructed subsurface temperature from Western Pacific Warm Pool ODP Site 806.","version":"1.0","xmlId":"16597"}