{"xmlId":"9912","NOAAStudyId":"11748","studyName":"Antarctic Ice Core Deglacial Water Isotope Data on GICC05 Timescale","doi":"https://doi.org/10.25921/sbqv-my49","uuid":"104b6546-bdd8-457a-9084-1974fbc84ec7","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":"ICE CORES","investigators":"Pedro, J.B.; van Ommen, T.D.; Rasmussen, S.O.; Morgan, V.I.; Chappellaz, J.A.; Moy, A.D.; Masson-Delmotte, V.; Delmotte, M.","investigatorDetails":[{"firstName":"Joel","lastName":"Pedro","initials":"J.B.","orcId":"0000-0002-0728-2712"},{"firstName":"Tas","lastName":"van Ommen","initials":"T.D.","orcId":"0000-0002-2463-1718"},{"firstName":"Sune","lastName":"Rasmussen","initials":"S.O.","orcId":"0000-0002-4177-3611"},{"firstName":"Vin","lastName":"Morgan","initials":"V.I.","orcId":null},{"firstName":"Jérôme","lastName":"Chappellaz","initials":"J.A.","orcId":"0000-0002-9117-2961"},{"firstName":"Andrew","lastName":"Moy","initials":"A.D.","orcId":"0000-0002-7664-9960"},{"firstName":"Valérie","lastName":"Masson-Delmotte","initials":"V.","orcId":"0000-0001-8296-381X"},{"firstName":"Marc","lastName":"Delmotte","initials":"M.","orcId":"0000-0003-3805-818X"}],"version":"1.0","funding":[{"fundingAgency":"France Agence Nationale de la Recherche (ANR)","fundingGrant":"ANR-07-BLAN-0125"}],"studyNotes":"Stable water isotope data from five high-resolution Antarctic ice \ncores spanning the last deglaciation, methane synchronized to the \nGreenland Ice Core 2005 Chronology (GICC05), plus a composite \n(or weighted average) of the five cores. \n\nThe five cores used in the Antarctic deglacial water isotope \ncomposite are: Law Dome, Byrd, EPICA Dronning Maud Land (EDML), \nSiple Dome, and Talos Dome. The data for each core is interpolated \nto 20 year time steps and standardised with respect to its own mean \nand standard deviation over the interval 9000 to 21000 years before \n1950 AD (9-21 ka BP 1950).  Estimated dating uncertainty in the \ncomposite (relative to GICC05) is ± 220 y during the interval \n10-13 ka BP, ± 200 y during the interval 13- 15 ka BP, \nand ± 380 y during the interval i.e. 15-18 ka BP. \nRefer to Pedro et al., (2011) (Table 2) and original references \nfor dating uncertainties in the individual cores.","onlineResourceLink":"https://www.ncei.noaa.gov/access/paleo-search/study/11748","difMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-icecore-11748.xml","isoMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/iso/xml/noaa-icecore-11748.xml","originalSource":null,"dataTypeInformation":"https://www.ncei.noaa.gov/products/paleoclimatology/ice-core","studyCode":null,"scienceKeywords":null,"reconstruction":"N","contributionDate":"2011-06-26","entryId":"noaa-icecore-11748","earliestYearBP":21000,"mostRecentYearBP":9000,"earliestYearCE":-19050,"mostRecentYearCE":-7050,"publication":[{"author":{"name":"Pedro, J.B., T.D. van Ommen, S.O Rasmussen, V.I. Morgan, \r\nJ. Chappellaz, A.D. Moy, V. Masson-Delmotte, and M. Delmotte"},"pubYear":2011,"title":"The last deglaciation: timing the bipolar seesaw","journal":"Climate of the Past","volume":"7","edition":null,"issue":null,"pages":"671-683","reportNumber":null,"citation":"Pedro, J.B., T.D. van Ommen, S.O Rasmussen, V.I. Morgan, \r\nJ. Chappellaz, A.D. Moy, V. Masson-Delmotte, and M. Delmotte. 2011. The last deglaciation: timing the bipolar seesaw. Climate of the Past, 7, 671-683. doi: 10.5194/cp-7-671-2011","type":"publication","identifier":{"type":"doi","id":"10.5194/cp-7-671-2011","url":"http://dx.doi.org/10.5194/cp-7-671-2011"},"abstract":"Precise information on the relative timing of north-south climate variations is a key to resolving questions concerning the mechanisms that force and couple climate changes between the hemispheres. We present a new composite record made from five well-resolved Antarctic ice core records that robustly represents the timing of regional Antarctic climate change during the last deglaciation. Using fast variations in global methane gas concentrations as time markers, the Antarctic composite is directly compared to Greenland ice core records, allowing a detailed mapping of the inter-hemispheric sequence of climate changes. Consistent with prior studies the synchronized records show that warming (and cooling) trends in Antarctica closely match cold (and warm) periods in Greenland on millennial timescales. For the first time, we also identify a sub-millennial component to the interhemispheric coupling. Within the Antarctic Cold Reversal the strongest Antarctic cooling occurs during the pronounced northern warmth of the Bølling. Warming then resumes in Antarctica, potentially as early as the Intra-Allerød Cold Period, but with dating uncertainty that could place it as late as the onset of the Younger Dryas stadial. There is little-to-no time lag between climate transitions in Greenland and opposing changes in Antarctica. Our results lend support to fast acting inter-hemispheric coupling mechanisms, including recently proposed bipolar atmospheric teleconnections and/or rapid bipolar ocean teleconnections.","pubRank":"1"}],"site":[{"NOAASiteId":"19979","siteName":"Byrd","siteCode":null,"mappable":"Y","locationName":"Continent>Antarctica","geo":{"geoType":"Feature","geometry":{"type":"POINT","coordinates":["-80.02","-119.52"]},"properties":{"southernmostLatitude":"-80.02","northernmostLatitude":"-80.02","westernmostLongitude":"-119.52","easternmostLongitude":"-119.52","minElevationMeters":"1530","maxElevationMeters":"1530"}},"paleoData":[{"dataTableName":"Byrd9-21k","NOAADataTableId":"20046","earliestYear":21000,"mostRecentYear":9000,"timeUnit":"cal yr 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