{"NOAAStudyId":"15108","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":"2013-09-26","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-15108.xml","doi":null,"earliestYearBP":3000000,"earliestYearCE":-2998050,"entryId":"noaa-ocean-15108","funding":[],"investigators":"Venti, N.L.; Billups, K.; Herbert, T.D.","mostRecentYearBP":1760000,"mostRecentYearCE":-1758050,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/15108","originalSource":null,"publication":[{"abstract":"Insolation-driven changes in poleward heat transport and changes in greenhouse gas concentrations can explain aspects of the rise of obliquity-paced climate variability during the Pliocene-Pleistocene transition. Based on an alkenone-based sea surface temperature (SST) reconstruction of the Kuroshio Current Extension (KCE), we propose here that emergence of this region as the primary locus of ocean-atmosphere heat transfer in the Pacific Ocean promoted Northern Hemisphere Glaciation (NHG). Our record shows that with intensification of NHG at 2.7 Ma, the KCE cooled 2-4°C during glacial intervals, likely in NH winter/spring. These high-amplitude 41-kyr SST cycles slightly lead d18O variations, ruling out global ice-volume changes as the primary cause. The lead of SST over d18O cycles matches the phasing between these two proxies observed in the tropics, supporting changes in CO2 concentrations as a unifying mechanism of ocean surface temperature change. However, the! amplitude of the KCE SST cycle is twice that of the tropical records, pointing to an additional, regional process. We infer that cooling of the North Pacific sea surface by the East Asian winter monsoon and associated westerlies intensified during glacial intervals. This transfer of heat and moisture from the ocean to the atmosphere potentially furthered glacial formation by accelerating snow fall in North America. Therefore, these results might also support a role for tropical-extratropical heat balance in enhancing glacial growth via the obliquity pacing.","author":{"name":"Venti, N.L., K. Billups, and T.D. Herbert"},"citation":"Venti, N.L., K. Billups, and T.D. Herbert. 2013. Increased sensitivity of the Plio-Pleistocene northwest Pacific to obliquity forcing. Earth and Planetary Science Letters, 384, 121-131. doi: 10.1016/j.epsl.2013.10.007","edition":null,"identifier":{"id":"10.1016/j.epsl.2013.10.007","type":"doi","url":"http://dx.doi.org/10.1016/j.epsl.2013.10.007"},"issue":null,"journal":"Earth and Planetary Science Letters","pages":"121-131","pubRank":"1","pubYear":2013,"reportNumber":null,"title":"Increased sensitivity of the Plio-Pleistocene northwest Pacific to obliquity forcing","type":"publication","volume":"384"}],"reconstruction":"Y","scienceKeywords":["Sea Surface Temperature Reconstruction"],"site":[{"NOAASiteId":"52720","geo":{"geoType":"Feature","geometry":{"coordinates":["36.127","158.2016"],"type":"POINT"},"properties":{"easternmostLongitude":"158.2016","maxElevationMeters":"-3346","minElevationMeters":"-3346","northernmostLatitude":"36.127","southernmostLatitude":"36.127","westernmostLongitude":"158.2016"}},"locationName":"Ocean>Pacific Ocean>North Pacific Ocean","mappable":"Y","paleoData":[{"NOAADataTableId":"25119","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleocean>reconstruction"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/venti2013-epsl/venti2013-epsl.txt","linkText":"SST Reconstruction","urlDescription":"Formatted Text File","variables":[{"cvAdditionalInfo":null,"cvDataType":"CLIMATE RECONSTRUCTIONS|PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"reconstruction material>organic compound index>alkenone unsaturation index","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":"meter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"radiocarbon kiloyear before present","cvWhat":"age variable>age"},{"cvAdditionalInfo":"core top depth","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"meter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":"core recovery percent","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":null,"cvWhat":"sampling metadata>notes"}]}],"dataTableName":"ODP1208-uk37SST","dataTableNotes":"Age model from Venti and Billups 2012 compared to LR04 Stack. Depth is unique (\"recompressed\") sample depth.","earliestYear":3000000,"earliestYearBP":3000000,"earliestYearCE":-2998050,"mostRecentYear":1760000,"mostRecentYearBP":1760000,"mostRecentYearCE":-1758050,"species":[],"timeUnit":"14C yr BP"}],"siteName":"ODP 1208"}],"studyCode":null,"studyName":"Kuroshio Extension Plio-Pleistocene Alkenone SST Reconstruction","studyNotes":"These are alkenone-based sea surface temperature estimates from ODP Site 1208, measured via gas chromatography on the total lipid extract. Some 500 sampling intervals were measured at 10 cm resolution (2500 year time step) through the Plio-Pleistocene interval (86-136 mbsf; 1.76-3.00 Ma).","version":"1.0","xmlId":"12951"}