{"xmlId":"72472","NOAAStudyId":"30794","studyName":"Sahul/Sunda Continental Shelf 122,000 Year Exposure Area Model Output","doi":"https://doi.org/10.25921/pd6y-c031","uuid":"f9c8b040-c7ba-4641-9301-b58edba7a064","dataPublisher":"NOAA","contactInfo":{"type":"CONTACT INFORMATION","shortName":"DOC/NOAA/NESDIS/NCEI","longName":"National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce ","address":"325 Broadway, E/NE31","city":"Boulder","state":"CO","postalCode":"80305-3328","country":"USA","dataCenterUrl":"https://www.ncei.noaa.gov/products/paleoclimatology","email":"paleo@noaa.gov","phone":"828-271-4800","fax":null,"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."},"dataType":"PALEOCLIMATIC MODELING","investigators":"Pico, T.; McGee, D.; Russell, J.M.; Mitrovica, J.X.","investigatorDetails":[{"firstName":"Tamara","lastName":"Pico","initials":"T.","orcId":"0000-0002-3629-0922"},{"firstName":"David","lastName":"McGee","initials":"D.","orcId":"0000-0002-7329-3428"},{"firstName":"James","lastName":"Russell","initials":"J.M.","orcId":"0000-0002-1329-4613"},{"firstName":"Jerry","lastName":"Mitrovica","initials":"J.X.","orcId":null}],"version":"1.0","funding":[],"studyNotes":"Continental shelf area calculated for the Sahul and Sunda shelf, using the ICE-PC2 ice history (Pico et al. 2017 Nature Communications) and the Waelbroeck ice history, based on the global mean sea-level history published in Waelbroeck et al. 2002 (QSR).","onlineResourceLink":"https://www.ncei.noaa.gov/access/paleo-search/study/30794","difMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-model-30794.xml","isoMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/iso/xml/noaa-model-30794.xml","originalSource":null,"dataTypeInformation":"https://www.ncei.noaa.gov/products/paleoclimatology/modeling","studyCode":null,"scienceKeywords":null,"reconstruction":"N","contributionDate":"2020-08-04","entryId":"noaa-model-30794","earliestYearBP":122000,"mostRecentYearBP":100,"earliestYearCE":-120050,"mostRecentYearCE":1850,"publication":[{"author":{"name":"T. Pico, D. McGee, J. Russell, J.X. Mitrovica"},"pubYear":2020,"title":"Recent constraints on MIS 3 sea level support role of continental shelf exposure as a control on Indo-Pacific hydroclimate","journal":"Paleoceanography and Paleoclimatology","volume":null,"edition":"e2020PA003998","issue":null,"pages":null,"reportNumber":null,"citation":"T. Pico, D. McGee, J. Russell, J.X. Mitrovica. 2020. Recent constraints on MIS 3 sea level support role of continental shelf exposure as a control on Indo-Pacific hydroclimate. Paleoceanography and Paleoclimatology. , e2020PA003998. doi: 10.1029/2020PA003998","type":"publication","identifier":{"type":"doi","id":"10.1029/2020PA003998","url":"http://dx.doi.org/10.1029/2020PA003998"},"abstract":"The mechanisms controlling changes in atmospheric circulation and rainfall over the Indo-Pacific Warm Pool (IPWP) on glacial-interglacial timescales remain a subject of considerable debate. Continental shelf exposure, through sea-level drawdown during glacial periods, has been proposed as an important and possibly dominant control on rainfall intensity over the IPWP and Indian Ocean. However, longer records of hydroclimate change undermine this shelf exposure hypothesis. In particular, trends in some proxy records of rainfall do not track the extent of continental shelf exposure inferred from global benthic oxygen isotope records during Marine Isotope Stage 3 (MIS 3). We revisit the hypothesis that continental shelf exposure controls IPWP precipitation using the latest constraints on ice-age sea level. Recent studies on the timing and magnitude of global mean sea level during mid- MIS 3 (~45) suggest significantly higher peak sea level relative to previous work. Our gravitationally self-consistent glacial isostatic adjustment sea-level reconstructions, which adopt recent constraints on MIS 3 sea level, predict a transition from widely-inundated to exposed shelves in the Indo Pacific region from mid-MIS 3 to the beginning of the Last Glacial Maximum (LGM, ~19-26 ka). Over this same time period, proxy records of vegetation and hydrology from central Indonesia suggest a transition from wetter conditions during mid-MIS3 to drier conditions during the LGM. Our new calculations thus negate prior criticisms related to the timing and extent of shelf exposure, indicating that shelf exposure may remain an important driver for hydroclimate variability in the Indo-Pacific Warm Pool region on glacial-interglacial timescales.","pubRank":"1"}],"site":[{"NOAASiteId":"58456","siteName":"Sahul/Sunda Continental Shelf","siteCode":null,"mappable":"N","locationName":"Ocean>Pacific Ocean>South Pacific Ocean","geo":{"geoType":"Feature","geometry":{"type":"POLYGON","coordinates":["-20","-10","102","138"]},"properties":{"southernmostLatitude":"-20","northernmostLatitude":"-10","westernmostLongitude":"102","easternmostLongitude":"138","minElevationMeters":null,"maxElevationMeters":null}},"paleoData":[{"dataTableName":"Pico2020SahulSundaShelf","NOAADataTableId":"43348","earliestYear":122000,"mostRecentYear":100,"timeUnit":"cal yr BP","earliestYearBP":122000,"mostRecentYearBP":100,"earliestYearCE":-120050,"mostRecentYearCE":1850,"coreLengthMeters":null,"dataTableNotes":null,"species":[],"dataFile":[{"fileUrl":"https://www.ncei.noaa.gov/pub/data/paleo/gcmoutput/pico2020/sahul-sunda2020shelf.txt","urlDescription":"NOAA Template File","linkText":"Sahul/Sunda Continental Shelf Exposure Area","variables":[{"cvDataType":"PALEOCLIMATIC MODELING","cvWhat":"age variable>age","cvMaterial":null,"cvError":null,"cvUnit":"time unit>age unit>calendar kiloyear before present","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"age_calkaBP"},{"cvDataType":"PALEOCLIMATIC MODELING","cvWhat":"earth system variable>geographic variable>land area","cvMaterial":null,"cvError":null,"cvUnit":"area unit>square kilometer","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"increase in Sahul continental shelf area relative to today; Waelbroeck 2002","cvFormat":"Numeric","cvShortName":"Wael_Sahul"},{"cvDataType":"PALEOCLIMATIC MODELING","cvWhat":"earth system variable>geographic variable>land area","cvMaterial":null,"cvError":null,"cvUnit":"area unit>square kilometer","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"increase in Sunda continental shelf area relative to today; Waelbroeck 2002","cvFormat":"Numeric","cvShortName":"Wael_Sunda"},{"cvDataType":"PALEOCLIMATIC MODELING","cvWhat":"earth system variable>geographic variable>land area","cvMaterial":null,"cvError":null,"cvUnit":"area unit>square kilometer","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"increase in Sahul continental shelf area relative to today; ICEPC2","cvFormat":"Numeric","cvShortName":"ICEPC2_Sahul"},{"cvDataType":"PALEOCLIMATIC MODELING","cvWhat":"earth system variable>geographic variable>land area","cvMaterial":null,"cvError":null,"cvUnit":"area unit>square kilometer","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"increase in Sunda continental shelf area relative to today; ICEPC2","cvFormat":"Numeric","cvShortName":"ICEPC2_Sunda"}],"NOAAKeywords":["earth science>paleoclimate>model>other model"]}]}]}],"reference":{"pastThesaurusSkos":"https://www.ncei.noaa.gov/access/paleo-search/skos/past-thesaurus.rdf","pastThesaurusExplorer":"https://www.ncei.noaa.gov/access/paleo-search/cvterms","gcmdKeywordThesaurus":"https://earthdata.nasa.gov/earth-observation-data/find-data/idn/gcmd-keywords"},"dataLicenseDescription":null,"dataLicenseUrl":null}