{"NOAAStudyId":"16155","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":"2014-03-16","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-16155.xml","doi":null,"earliestYearBP":35240,"earliestYearCE":-33290,"entryId":"noaa-ocean-16155","funding":[{"fundingAgency":"Bundesministerium für Bildung und Forschung","fundingGrant":null},{"fundingAgency":"Deutsche Forschungsgemeinschaft","fundingGrant":"He 3412/15-1"},{"fundingAgency":"US National Science Foundation","fundingGrant":null}],"investigators":"Gibbons, F.T.; Oppo, D.W.; Mohtadi, M.; Rosenthal, Y.; Cheng, J.; Liu, Z.; Linsley, B.K.","mostRecentYearBP":250,"mostRecentYearCE":1700,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/16155","originalSource":null,"publication":[{"abstract":"Evidence from geologic archives suggests that there were large changes in the tropical hydrologic cycle associated with the two prominent northern hemisphere deglacial cooling events, Heinrich Stadial 1 (HS1; ~19 to 15 kyr BP; kyr BP = 1000 yr before present) and the Younger Dryas (~12.9 to 11.7 kyr BP). These hydrologic shifts have been alternatively attributed to high and low latitude origin. Here, we present a new record of hydrologic variability based on planktic foraminifera-derived d18O of seawater (d18Osw) estimates from a sediment core from the tropical Eastern Indian Ocean, and using 12 additional d18Osw records, construct a single record of the dominant mode of tropical Eastern Equatorial Pacific and Indo-Pacific Warm Pool (IPWP) hydrologic variability. We show that deglacial hydrologic shifts parallel variations in the reconstructed interhemispheric temperature gradient, suggesting a strong response to variations in the Atlantic Meridional Overturning Circulation and the attendant heat redistribution. A transient model simulation of the last deglaciation suggests that hydrologic changes, including a southward shift in the Intertropical Convergence Zone (ITCZ) which likely occurred during these northern hemisphere cold events, coupled with oceanic advection and mixing, resulted in increased salinity in the Indonesian region of the IPWP and the eastern tropical Pacific, which is recorded by the d18Osw proxy. Based on our observations and modeling results we suggest the interhemispheric temperature gradient directly controls the tropical hydrologic cycle on these time scales, which in turn mediates poleward atmospheric heat transport.","author":{"name":"Fern T. Gibbons, Delia W. Oppo, Mahyar Mohtadi, Yair Rosenthal, Jun Cheng, Zhengyu Liu, Braddock K. Linsley"},"citation":"Fern T. Gibbons, Delia W. Oppo, Mahyar Mohtadi, Yair Rosenthal, Jun Cheng, Zhengyu Liu, Braddock K. Linsley. 2014. Deglacial d18O and hydrologic variability in the tropical Pacific and Indian Oceans. Earth and Planetary Science Letters, 387, 240-251. doi: 10.1016/j.epsl.2013.11.032","edition":null,"identifier":{"id":"10.1016/j.epsl.2013.11.032","type":"doi","url":"http://dx.doi.org/10.1016/j.epsl.2013.11.032"},"issue":null,"journal":"Earth and Planetary Science Letters","pages":"240-251","pubRank":"1","pubYear":2014,"reportNumber":null,"title":"Deglacial d18O and hydrologic variability in the tropical Pacific and Indian Oceans","type":"publication","volume":"387"}],"reconstruction":"Y","scienceKeywords":["Meridional Overturning Circulation (MOC)","Heinrich Events","hydrology","Warm Pool"],"site":[{"NOAASiteId":"55823","geo":{"geoType":"Feature","geometry":{"coordinates":["-9.594833","120.917"],"type":"POINT"},"properties":{"easternmostLongitude":"120.917","maxElevationMeters":"-1250","minElevationMeters":"-1250","northernmostLatitude":"-9.594833","southernmostLatitude":"-9.594833","westernmostLongitude":"120.917"}},"locationName":"Ocean>Indian Ocean>Indonesia","mappable":"Y","paleoData":[{"NOAADataTableId":"26146","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleocean>geochemistry"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/gibbons2014/gibbons2014d18o-sw.txt","linkText":"Foraminiferal Mg/Ca and d18Oseawater Estimates","urlDescription":"Data File","variables":[{"cvAdditionalInfo":"using 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":"using 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 SMOW","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":"using 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 SMOW","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":"using 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 SMOW","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":"using G. ruber; ice volume corrected","cvDataType":"CLIMATE RECONSTRUCTIONS|PALEOCEANOGRAPHY","cvDetail":"corrected","cvError":null,"cvFormat":"Numeric","cvMaterial":"reconstruction material>isotope ratio>delta 18O","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil SMOW","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":"using G. ruber; ice volume corrected","cvDataType":"CLIMATE RECONSTRUCTIONS|PALEOCEANOGRAPHY","cvDetail":"corrected","cvError":null,"cvFormat":"Numeric","cvMaterial":"reconstruction material>element or compound ratio>magnesium/calcium","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil SMOW","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":"using G. ruber; ice volume corrected","cvDataType":"CLIMATE RECONSTRUCTIONS|PALEOCEANOGRAPHY","cvDetail":"corrected","cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>sea water","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil SMOW","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":"centimeter","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":"millimole per mole","cvWhat":"chemical composition>element or compound ratio>magnesium/calcium"},{"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 VPDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"}]}],"dataTableName":"Gibbons2014d18Osw","dataTableNotes":null,"earliestYear":35240,"earliestYearBP":35240,"earliestYearCE":-33290,"mostRecentYear":470,"mostRecentYearBP":470,"mostRecentYearCE":1480,"species":[],"timeUnit":"cal yr BP"},{"NOAADataTableId":"26147","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleocean>reconstruction"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/gibbons2014/gibbons2014pc.txt","linkText":"Principal Components of Regional Ice Volume Corrected d18Oseawater","urlDescription":"Data File","variables":[{"cvAdditionalInfo":"axis 2; regional average of ice volume corrected del18Oseawater","cvDataType":"CLIMATE RECONSTRUCTIONS|PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil SMOW","cvWhat":"statistical variable>multivariate eigenvector-based variable>principal component"},{"cvAdditionalInfo":"regional average of ice volume corrected del18Oseawater","cvDataType":"CLIMATE RECONSTRUCTIONS|PALEOCEANOGRAPHY","cvDetail":"averaged","cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>sea water","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil SMOW","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":"regional average of ice volume corrected del18Oseawater","cvDataType":"CLIMATE RECONSTRUCTIONS|PALEOCEANOGRAPHY","cvDetail":"corrected","cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>sea water","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil SMOW","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":"axis 1; regional average of ice volume corrected del18Oseawater","cvDataType":"CLIMATE RECONSTRUCTIONS|PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil SMOW","cvWhat":"statistical variable>multivariate eigenvector-based variable>principal component"},{"cvAdditionalInfo":"axis 3; regional average of ice volume corrected del18Oseawater","cvDataType":"CLIMATE RECONSTRUCTIONS|PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil SMOW","cvWhat":"statistical variable>multivariate eigenvector-based variable>principal component"},{"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"}]}],"dataTableName":"Gibbons2014PC","dataTableNotes":null,"earliestYear":21250,"earliestYearBP":21250,"earliestYearCE":-19300,"mostRecentYear":250,"mostRecentYearBP":250,"mostRecentYearCE":1700,"species":[],"timeUnit":"cal yr BP"}],"siteName":"GeoB10069-3"}],"studyCode":null,"studyName":"Indo-Pacific Warm Pool 35KYr Foraminiferal d18Oseawater Estimates","studyNotes":"Planktic foraminiferal Mg/Ca and oxygen isotope (d18O) data, plus estimated d18Oseawater \nand ice volume corrected del18Oseawater for the past 35,000 years from sediment core GeoB10069-3, \ncollected in the tropical Eastern Indian Ocean.  All data are from G. ruber. Also included is a regional \naverage of ice volume corrected del18Oseawater and a principal component analysis of this dataset. \nFor a list of cores included in the average and principal component analysis, see file gibbons2014pc.txt. ","version":"1.0","xmlId":"13901"}