{"NOAAStudyId":"26550","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":"2019-04-22","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-26550.xml","doi":null,"earliestYearBP":449740,"earliestYearCE":-447790,"entryId":"noaa-ocean-26550","funding":[{"fundingAgency":"David and Lucile Packard Foundation","fundingGrant":"Fellowship in Science and Engineering"},{"fundingAgency":"US National Science Foundation","fundingGrant":"DGE-1143953"}],"investigators":"Windler, G.; Tierney, J.E.; DiNezio, P.N.; Gibson, K.A.; Thunell, R.C.","mostRecentYearBP":920,"mostRecentYearCE":1030,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/26550","originalSource":null,"publication":[{"abstract":"The Indo-Pacific Warm Pool is the largest source of heat and rainfall on Earth, but the mechanisms driving long-term climate variability in this region remain uncertain. Some studies suggest that precessional variations in insolation exert a primary role; alternatively, sea level change may be more important, with exposure of the Sunda and Sahul shelves leading to weakened Walker circulation across the Indian Ocean during glacial periods. The limited number of paleoclimate records from the warm pool that extend beyond the Last Glacial Maximum makes it difficult to test these competing hypotheses. Here, we present a 450,000-year long reconstruction of sea surface temperatures, sub-surface temperatures, and regional vegetation from southern Sumatra. We show that the dominant signal in each record is the 100 ky glacial cycle. We find that both surface and sub-surface temperatures cool during glacial periods, but the sub-surface cools more, reflecting a shoaling of the thermocline. Southern Sumatra and western Java consistently exhibit increased C4 grass coverage and an enhanced dry season during glacial periods. The observed changes in the thermocline and rainfall seasonality are consistent with the shelf exposure mechanism, suggesting that sea level changes exert a prominent role in warm pool climate over glacial-interglacial timescales.","author":{"name":"Grace Windler, Jessica E. Tierney, Pedro N. DiNezio, Kelly Gibson, Robert Thunell"},"citation":"Grace Windler, Jessica E. Tierney, Pedro N. DiNezio, Kelly Gibson, Robert Thunell. 2019. Shelf exposure influence on Indo-Pacific Warm Pool climate for the last 450,000 years. Earth and Planetary Science Letters, 516, 66-76. doi: 10.1016/j.epsl.2019.03.038","edition":null,"identifier":{"id":"10.1016/j.epsl.2019.03.038","type":"doi","url":"http://dx.doi.org/10.1016/j.epsl.2019.03.038"},"issue":null,"journal":"Earth and Planetary Science Letters","pages":"66-76","pubRank":"1","pubYear":2019,"reportNumber":null,"title":"Shelf exposure influence on Indo-Pacific Warm Pool climate for the last 450,000 years","type":"publication","volume":"516"}],"reconstruction":"Y","scienceKeywords":null,"site":[{"NOAASiteId":"57859","geo":{"geoType":"Feature","geometry":{"coordinates":["-6.328","103.879"],"type":"POINT"},"properties":{"easternmostLongitude":"103.879","maxElevationMeters":"-1796","minElevationMeters":"-1796","northernmostLatitude":"-6.328","southernmostLatitude":"-6.328","westernmostLongitude":"103.879"}},"locationName":"Ocean>Indian Ocean","mappable":"Y","paleoData":[{"NOAADataTableId":"39013","coreLengthMeters":30,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleocean>biomarkers","earth science>paleoclimate>paleocean>carbon isotopes","earth science>paleoclimate>paleocean>reconstruction"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/windler2019/windler2019.txt","linkText":"MD98-2152 Alkenone Temperature, Biomarker, and d13C Data","urlDescription":"NOAA Template File","variables":[]}],"dataTableName":"Windler2019","dataTableNotes":"from the MD111 cruise","earliestYear":449740,"earliestYearBP":449740,"earliestYearCE":-447790,"mostRecentYear":920,"mostRecentYearBP":920,"mostRecentYearCE":1030,"species":[],"timeUnit":"cal yr BP"}],"siteName":"MD98-2152"}],"studyCode":null,"studyName":"Indo-Pacific Warm Pool 450,000 Year Alkenone Temperature Reconstructions","studyNotes":"Alkenone temperature, biomarker, and carbon isotope data from Indian Ocean core MD98-2152 for the past 450kyr.","version":"1.0","xmlId":"65614"}