{"NOAAStudyId":"2607","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":"2004-07-01","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-2607.xml","doi":null,"earliestYearBP":361000,"earliestYearCE":-359050,"entryId":"noaa-ocean-2607","funding":[],"investigators":"Lea, D.W.","mostRecentYearBP":1000,"mostRecentYearCE":950,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/2607","originalSource":null,"publication":[{"abstract":null,"author":null,"citation":"Shackleton, N.J. 2000. The 100,000-year ice-age cycle identified and found to lag temperature, carbon dioxide, and orbital eccentricity. Science 289:1897-1902.","edition":null,"identifier":null,"issue":null,"journal":"Science","pages":null,"pubRank":"3","pubYear":2000,"reportNumber":null,"title":"The 100,000-year ice-age cycle identified and found to lag temperature, carbon dioxide, and orbital eccentricity","type":"publication","volume":null},{"abstract":"The key scientific uncertainty in the global warming debate is the equilibrium climate sensitivity. Coupled atmosphere-ocean general circulation models predict a wide range of equilibrium climate sensitivities, with a consequently large spread of societal implications. Comparison of models with instrumental data has not been able to reduce the uncertainty in climate sensitivity. An alternative way to gauge equilibrium climate sensitivity is to use paleoclimatic data. Two recent advances, the development and application of proxy recorders of tropical sea surface temperature (SST) and the synchronization of the deep-sea and Antarctic ice-core time scales, make it possible to directly relate past changes in tropical SST to atmospheric carbon dioxide (CO2) levels. The strong correspondence of a proxy SST record from the eastern equatorial Pacific and the Vostok CO2 record suggests that varying atmospheric carbon dioxide is the dominant control on tropical climate on orbital time scales. This effect is especially pronounced at the 100,000-yr cycle. Calibration of the CO2 influence via tropical SST variability indicates a tropical climate sensitivity of 4.4°-5.6°C (errors estimated at ą 1.0°C) for a doubling of atmospheric CO2 concentration. This result suggests that the equilibrium response of tropical climate to atmospheric CO2 changes is likely to be similar to the upper end of available global predictions from coupled models.","author":null,"citation":"Lea, D.W. 2004. The 100,000 year cycle in tropical SST, greenhouse forcing, and climate sensitivity. Journal of Climate, 17(11):2170-2179.","edition":null,"identifier":null,"issue":null,"journal":"Journal of Climate","pages":null,"pubRank":"1","pubYear":2004,"reportNumber":null,"title":"The 100,000 year cycle in tropical SST, greenhouse forcing, and climate sensitivity","type":"publication","volume":null},{"abstract":null,"author":null,"citation":"Dekens, P.S., D.W. Lea, D.K. Pak, and H.J. Spero. 2002. Core top calibration of Mg/Ca in tropical foraminifera: Refining paleo-temperature estimation. Geochemistry, Geophysics, Geosystems, 3:1022.","edition":null,"identifier":null,"issue":null,"journal":"Geochemistry, Geophysics, Geosystems","pages":null,"pubRank":"4","pubYear":2002,"reportNumber":null,"title":"Core top calibration of Mg/Ca in tropical foraminifera: Refining paleo-temperature estimation","type":"publication","volume":null},{"abstract":null,"author":null,"citation":"Lea, D.W., D.K. Pak, and H.J. Spero. 2000. Climate impact of late Quaternary equatorial Pacific sea surface temperature variations. Science 289(5485):1719-1724.","edition":null,"identifier":null,"issue":null,"journal":"Science","pages":null,"pubRank":"2","pubYear":2000,"reportNumber":null,"title":"Climate impact of late Quaternary equatorial Pacific sea surface temperature variations","type":"publication","volume":null}],"reconstruction":"Y","scienceKeywords":["Sea Surface Temperature Reconstruction"],"site":[{"NOAASiteId":"19120","geo":{"geoType":"Feature","geometry":{"coordinates":["2.25","-90.95"],"type":"POINT"},"properties":{"easternmostLongitude":"-90.95","maxElevationMeters":"-2348","minElevationMeters":"-2348","northernmostLatitude":"2.25","southernmostLatitude":"2.25","westernmostLongitude":"-90.95"}},"locationName":"Ocean>Pacific Ocean>North Pacific Ocean","mappable":"Y","paleoData":[{"NOAADataTableId":"4291","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleocean>reconstruction","earth science>paleoclimate>paleocean>age control","earth science>paleoclimate>paleocean>trace metals in carbonates"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/lea2004","linkText":"lea2004","urlDescription":"Original Data and Full Metadata","variables":[]},{"NOAAKeywords":["earth science>paleoclimate>paleocean>age control","earth science>paleoclimate>paleocean>trace metals in carbonates","earth science>paleoclimate>paleocean>reconstruction"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/t16319l4-tab.txt","linkText":"t16319l4-tab.txt","urlDescription":"Alternate Format Data","variables":[{"cvAdditionalInfo":"on 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":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 year 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":"dimensionless","cvWhat":"chemical composition>element or compound ratio>magnesium/calcium"}]}],"dataTableName":"T16319L4","dataTableNotes":"Mg/Ca data on cleaned G. ruber shells by ICP-MS, 417 individual data points from Lea et al. 2000, and 76 new data points from 39 depth intervals, total data points 493, total depth intervals 208. SST estimates based on depth/basin-corrected calibration in","earliestYear":361000,"earliestYearBP":361000,"earliestYearCE":-359050,"mostRecentYear":1000,"mostRecentYearBP":1000,"mostRecentYearCE":950,"species":[],"timeUnit":"cal yr BP"}],"siteName":"TR163-19"}],"studyCode":null,"studyName":"Eastern Tropical Pacific Foraminiferal Mg/Ca and SST Reconstruction","studyNotes":"","version":"1.0","xmlId":"1678"}