{"NOAAStudyId":"19765","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":"2016-03-14","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-19765.xml","doi":null,"earliestYearBP":22330,"earliestYearCE":-20380,"entryId":"noaa-icecore-19765","funding":[{"fundingAgency":"US National Science Foundation","fundingGrant":"0839078"}],"investigators":"Bauska, T.K.; Baggenstos, D.; Brook, E.J.; Mix, A.C.; Marcott, S.A.; Petrenko, V.V.; Schaefer, H.; Severinghaus, J.; Lee, J.-E.","mostRecentYearBP":10919,"mostRecentYearCE":-8969,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/19765","originalSource":null,"publication":[{"abstract":"An understanding of the mechanisms that control CO2 change during glacial-interglacial cycles remains elusive. Here we help to constrain changing sources with a high-precision, high-resolution deglacial record of the stable isotopic composition of carbon in CO2 (d13C-CO2) in air extracted from ice samples from Taylor Glacier, Antarctica. During the initial rise in atmospheric CO2 from 17.6 to 15.5 ka, these data demarcate a decrease in d13C-CO2, likely due to a weakened oceanic biological pump. From 15.5 to 11.5 ka, the continued atmospheric CO2 rise of 40 ppm is associated with small changes in d13C-CO2, consistent with a nearly equal contribution from a further weakening of the biological pump and rising ocean temperature. These two trends, related to marine sources, are punctuated at 16.3 and 12.9 ka with abrupt, century-scale perturbations in d13C-CO2 that suggest rapid oxidation of organic land carbon or enhanced air-sea gas exchange in the Southern Ocean. Additional century-scale increases in atmospheric CO2 coincident with increases in atmospheric CH4 and Northern Hemisphere temperature at the onset of the Bolling (14.6-14.3 ka) and Holocene (11.6-11.4 ka) intervals are associated with small changes in d13C-CO2, suggesting a combination of sources that included rising surface ocean temperature.","author":{"name":"Bauska, T.K., Baggenstos, D., Brook, E.J., Mix, A.C., Marcott, S.A, Petrenko, V.V., Schaefer, H., Severinghaus, J.P., and Lee, J.E."},"citation":"Bauska, T.K., Baggenstos, D., Brook, E.J., Mix, A.C., Marcott, S.A, Petrenko, V.V., Schaefer, H., Severinghaus, J.P., and Lee, J.E. 2016. Carbon isotopes characterize rapid changes in atmospheric carbon dioxide during the last deglaciation. Proceedings of the National Academy of Sciences, 113(13), 3465-3470. doi: 10.1073/pnas.1513868113","edition":null,"identifier":{"id":"10.1073/pnas.1513868113","type":"doi","url":"http://dx.doi.org/10.1073/pnas.1513868113"},"issue":"13","journal":"Proceedings of the National Academy of Sciences","pages":"3465-3470","pubRank":"1","pubYear":2016,"reportNumber":null,"title":"Carbon isotopes characterize rapid changes in atmospheric carbon dioxide during the last deglaciation","type":"publication","volume":"113"}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"56720","geo":{"geoType":"Feature","geometry":{"coordinates":["-77.75","161.75"],"type":"POINT"},"properties":{"easternmostLongitude":"161.75","maxElevationMeters":null,"minElevationMeters":null,"northernmostLatitude":"-77.75","southernmostLatitude":"-77.75","westernmostLongitude":"161.75"}},"locationName":"Continent>Antarctica","mappable":"Y","paleoData":[{"NOAADataTableId":"30409","coreLengthMeters":null,"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/taylor/taylor2016d13co2.txt","linkText":"Taylor Glacier and d13CO2 Data","urlDescription":"Data File","variables":[{"cvAdditionalInfo":"distance along transect surface","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":"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"},{"cvAdditionalInfo":null,"cvDataType":"CLIMATE FORCING|ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"atmospheric material>bulk atmosphere","cvMethod":"gas chromatography - flame ionization detection","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":null,"cvFormat":"Numeric","cvMaterial":"atmospheric material>bulk atmosphere","cvMethod":"mechanical dry extraction","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":"dual-inlet isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VPDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 13C"},{"cvAdditionalInfo":null,"cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"chemical composition>compound>inorganic compound>carbon dioxide","cvMethod":"mechanical dry extraction","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VPDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 13C"}]}],"dataTableName":"Taylor2016d13CO2","dataTableNotes":null,"earliestYear":22330,"earliestYearBP":22330,"earliestYearCE":-20380,"mostRecentYear":10919,"mostRecentYearBP":10919,"mostRecentYearCE":-8969,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Taylor Glacier"}],"studyCode":null,"studyName":"Taylor Glacier, Antarctica 22-11KYrBP CO2 and d13CO2 Data","studyNotes":"CO2 concentration and Stable Isotopic Composition of CO2 from the Taylor Glacier","version":"1.0","xmlId":"17536"}