{"NOAAStudyId":"14170","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":"2013-04-02","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-14170.xml","doi":null,"earliestYearBP":3000000,"earliestYearCE":-2998050,"entryId":"noaa-ocean-14170","funding":[],"investigators":"Venti, N.L.; Billups, K.","mostRecentYearBP":1760000,"mostRecentYearCE":-1758050,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/14170","originalSource":null,"publication":[{"abstract":"The Pliocene–Pleistocene climate transition offers an opportunity to study the effect of glaciation on the ocean–climate system. We present a Globigerinoides ruber δ18O record from Ocean Drilling Program Site 1208 (Kuroshio Current Extension; KCE). This exclusively (sub)tropical foraminifer, a summer/fall mixed-layer dweller at the KCE, affords the first long (3.0 Ma to 1.8 Ma) orbital-scale (2.5-kyr time step) account of the sea surface in this area. The section's temperature-corrected benthic foraminiferal δ18O record constrains global changes in ice volume, yielding a Δδ18O record that primarily reflects summer/fall KCE hydrography (temperature and salinity). A 0.3‰ decrease in Δδ18O values at 2.7 Ma coincides with the onset of Northern Hemisphere glaciation, indicating as much as 1.5°C warming during the summer/fall to suggest that the subtropical North Pacific sea surface provided heat and moisture for expanding ice sheets. On the orbital scale, the 41-kyr cycle that dominates high-latitude climate is absent from the Δδ18O record, indicating a stable surface water hydrographic regime on this time scale. Rather, the Δδ18O record varies at and is coherent with the 19-kyr precessional component of the regional insolation curve, supporting a direct response to subtropical insolation and insensitivity to extra-regional forcing factors, such as ice sheets.","author":{"name":"Venti, N.L., and Billups, K."},"citation":"Venti, N.L., and Billups, K. 2013. Surface water hydrography of the Kuroshio Extension during the Pliocene-Pleistocene climate transition. Marine Micropaleontology, 101, 106-114. doi: 10.1016/j.micro2013.02.004","edition":null,"identifier":{"id":"10.1016/j.micro2013.02.004","type":"doi","url":"http://dx.doi.org/10.1016/j.micro2013.02.004"},"issue":null,"journal":"Marine Micropaleontology","pages":"106-114","pubRank":"1","pubYear":2013,"reportNumber":null,"title":"Surface water hydrography of the Kuroshio Extension during the Pliocene-Pleistocene climate transition","type":"publication","volume":"101"}],"reconstruction":"N","scienceKeywords":null,"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":"24059","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleocean>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/venti2013/venti2013.txt","linkText":"venti2013.txt","urlDescription":"Original Data and Full Metadata","variables":[{"cvAdditionalInfo":"\"mbsf; unique(\"\"recompressed\"\")\"","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":"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 PDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":"shipboard reported 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 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-Venti13","dataTableNotes":null,"earliestYear":3000000,"earliestYearBP":3000000,"earliestYearCE":-2998050,"mostRecentYear":1760000,"mostRecentYearBP":1760000,"mostRecentYearCE":-1758050,"species":[],"timeUnit":"cal yr BP"}],"siteName":"ODP 1208"}],"studyCode":null,"studyName":"Kuroshio Extension Oxygen Isotope Data During the Pliocene-Pleistocene Climate Transition","studyNotes":"Oxygen isotope measurements of Globigerinoides ruber span the Plio-Pleistocene boundary (3.0 to 1.76 Ma) at 2500-year time step. Stable-isotope analyses were conducted at the University of Delaware with the GV Instruments IsoPrime dual-inlet mass spectrometer. Oxygen isotopic values have been corrected to the Peedee Belemnite standard using NBS-19 and Carrara Marble as an in-house standard.","version":"1.0","xmlId":"12170"}