{"NOAAStudyId":"9972","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":"2010-06-29","dataPublisher":"NOAA","dataType":"ICE CORES","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/ice-core","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-icecore-9972.xml","doi":null,"earliestYearBP":22008,"earliestYearCE":-20058,"entryId":"noaa-icecore-9972","funding":[{"fundingAgency":"European Research Training and Mobility Network","fundingGrant":"GREENCYCLES"},{"fundingAgency":"QUEST-INSU","fundingGrant":"DESIRE"},{"fundingAgency":"European Union","fundingGrant":"FP6 STREP EPICAMIS"},{"fundingAgency":"ANR France","fundingGrant":"ANR-05-BLAN-0312-01"}],"investigators":"Lourantou, A.; Lavric, J.V.; Köhler, P.; Barnola, J.M.; Paillard, D.; Michel, E.; Raynaud, D.; Chappellaz, J.A.","mostRecentYearBP":8756,"mostRecentYearCE":-6806,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/9972","originalSource":null,"publication":[{"abstract":"The causes of the ~80 ppmv increase of atmospheric carbon dioxide (CO2) \nduring the last glacial-interglacial climatic transition remain debated. \nWe analyzed the parallel evolution of CO2 and its stable carbon isotopic \nratio (d13CO2) in the European Project for Ice Coring in Antarctica (EPICA) \nDome C ice core to bring additional constraints.  Agreeing well but largely \nimproving the Taylor Dome ice core record of lower resolution, our d13CO2 \nrecord is characterized by a W shape, with two negative d13CO2 excursions\nof 0.5‰ during Heinrich 1 and Younger Dryas events, bracketing a positive \nd13CO2 peak during the Bølling/Allerød warm period. The comparison with \nmarine records and the outputs of two C cycle box models suggest that \nchanges in Southern Ocean ventilation drove most of the CO2 increase, \nwith additional contributions from marine productivity changes on the \ninitial CO2 rise and d13CO2 decline and from rapid vegetation buildup \nduring the CO2 plateau of the Bølling/Allerød.\n\n","author":null,"citation":"Lourantou, A., J.V. Lavric, P. Köhler, J.-M. Barnola, \nD. Paillard, E. Michel, D. Raynaud, and J. Chappellaz. 2010. \nConstraint of the CO2 rise by new atmospheric carbon isotopic \nmeasurements during the last deglaciation. \nGlobal Biogeochem. Cycles, 24, GB2015.  \ndoi:10.1029/2009GB003545 \n","edition":null,"identifier":{"id":"10.1029/2009GB003545","type":"doi","url":"http://dx.doi.org/10.1029/2009GB003545"},"issue":null,"journal":"Global Biogeochemical Cycles","pages":null,"pubRank":"1","pubYear":2010,"reportNumber":null,"title":"Constraint of the CO2 rise by new atmospheric carbon isotopic  measurements during the last deglaciation","type":"publication","volume":null}],"reconstruction":"N","scienceKeywords":["carbon cycle","Last Glacial Maximum"],"site":[{"NOAASiteId":"19998","geo":{"geoType":"Feature","geometry":{"coordinates":["-75.1","123.4"],"type":"POINT"},"properties":{"easternmostLongitude":"123.4","maxElevationMeters":"3240","minElevationMeters":"3240","northernmostLatitude":"-75.1","southernmostLatitude":"-75.1","westernmostLongitude":"123.4"}},"locationName":"Continent>Antarctica","mappable":"Y","paleoData":[{"NOAADataTableId":"18820","coreLengthMeters":232,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>ice core>carbon isotopes","earth science>paleoclimate>ice core>atmospheric gas"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/epica_domec/edc2010d13co2.txt","linkText":"edc2010d13co2.txt","urlDescription":"Data","variables":[{"cvAdditionalInfo":null,"cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"meter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":null,"cvDataType":"CLIMATE FORCING|ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"atmospheric material>bulk atmosphere","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"parts per million","cvWhat":"chemical composition>compound>inorganic compound>carbon dioxide"},{"cvAdditionalInfo":null,"cvDataType":"CLIMATE FORCING|ICE CORES","cvDetail":"corrected","cvError":null,"cvFormat":"Numeric","cvMaterial":"atmospheric material>bulk atmosphere","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"parts per million","cvWhat":"chemical composition>compound>inorganic compound>carbon dioxide"},{"cvAdditionalInfo":null,"cvDataType":"CLIMATE FORCING|ICE CORES","cvDetail":null,"cvError":"one standard deviation","cvFormat":"Numeric","cvMaterial":"atmospheric material>bulk atmosphere","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"parts per million","cvWhat":"chemical composition>compound>inorganic compound>carbon dioxide"},{"cvAdditionalInfo":null,"cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"chemical composition>compound>inorganic compound>carbon dioxide","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil PDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 13C"},{"cvAdditionalInfo":null,"cvDataType":"ICE CORES","cvDetail":"corrected","cvError":null,"cvFormat":"Numeric","cvMaterial":"chemical composition>compound>inorganic compound>carbon dioxide","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil PDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 13C"},{"cvAdditionalInfo":null,"cvDataType":"ICE CORES","cvDetail":null,"cvError":"one standard deviation","cvFormat":"Numeric","cvMaterial":"chemical composition>compound>inorganic compound>carbon dioxide","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil","cvWhat":"chemical composition>isotope>isotope ratio>delta 13C"},{"cvAdditionalInfo":null,"cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar year before present","cvWhat":"age variable>age>gas age"}]},{"NOAAKeywords":["earth science>paleoclimate>ice core>carbon isotopes","earth science>paleoclimate>ice core>atmospheric gas"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/epica_domec/edc2010d13co2.xls","linkText":"edc2010d13co2.xls","urlDescription":"Data","variables":[]}],"dataTableName":"EDC T1","dataTableNotes":"346 - 578 m depth in EDC core","earliestYear":22008,"earliestYearBP":22008,"earliestYearCE":-20058,"mostRecentYear":8756,"mostRecentYearBP":8756,"mostRecentYearCE":-6806,"species":[],"timeUnit":"cal yr BP"}],"siteName":"EPICA Dome C"}],"studyCode":null,"studyName":"EPICA Dome C Ice Core Termination I d13CO2 Data","studyNotes":"High resolution record of CO2 and d13CO2 across Termination I \nfrom the European Project for Ice Coring in Antarctica (EPICA) \nDome C (EDC) ice core.  This record is compared to existing \nlower-resolution EPICA Dome C CO2 data and d13CO2 from the \nTaylor Dome Ice core, in order to evaluate mechanisms for \nthe Termination I CO2 rise.  \n\nThe experimental procedure of extraction of CO2 and its stable \nisotopes, as well as the synchronization of EDC age scale to GICC05, \nare described in the methods section of Lourantou et al. 2010. \nAn even more detailed description can be found in Lourantou, 2009 \n(PhD thesis, can be found online at: \nhttp://tel.archives-ouvertes.fr/tel-00370658/fr/) \n\nTermination I is the transition from the Last Glacial Maximum \n(~20 kyr B.P.) to the Early Holocene (~10 kyr B.P). \n","version":"1.0","xmlId":"8865"}