noaa-icecore-19765 Taylor Glacier, Antarctica 22-11KYrBP CO2 and d13CO2 Data Bauska, T.K.; Baggenstos, D.; Brook, E.J.; Mix, A.C.; Marcott, S.A.; Petrenko, V.V.; Schaefer, H.; Severinghaus, J.; Lee, J.-E. Taylor Glacier, Antarctica 22-11KYrBP CO2 and d13CO2 Data 2016-03-14 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/19765 Investigator T.K. Bauska Investigator D. Baggenstos Investigator E.J. Brook Investigator A.C. Mix Investigator S.A. Marcott Investigator V.V. Petrenko Investigator H. Schaefer Investigator J. Severinghaus Investigator J.-E. Lee earth science paleoclimate ice cores depth,null,null,meter,null,ice cores,null,null,N,distance along transect surface earth science paleoclimate climate forcing|ice cores carbon dioxide,bulk atmosphere,null,parts per million,null,climate forcing|ice cores,null,gas chromatography - flame ionization detection|mechanical dry extraction,N,null earth science paleoclimate ice cores gas age,null,null,calendar year before present,null,ice cores,null,null,N,null earth science paleoclimate ice cores delta 13C,carbon dioxide,null,per mil VPDB,null,ice cores,null,dual-inlet isotope ratio mass spectrometry|mechanical dry extraction,N,null earth science paleoclimate ice core carbon isotopes earth science paleoclimate ice core atmospheric gas geoscientificInformation 22330 cal yr BP 10919 cal yr BP Complete -77.75 -77.75 161.75 161.75 Continent Antarctica Taylor Glacier>LATITUDE -77.75>LONGITUDE 161.75 None 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. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII 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 Proceedings of the National Academy of Sciences 113 13 3465-3470 10.1073/pnas.1513868113 http://www.pnas.org/content/113/13/3465

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. STUDY NOTES: CO2 concentration and Stable Isotopic Composition of CO2 from the Taylor Glacier

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/taylor/taylor2016d13co2.txt Data File; Taylor Glacier and d13CO2 Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11