Intensified Southern Hemisphere Westerlies regulated atmospheric CO2 during the last deglaciation

Research Article| August 01, 2013 Intensified Southern Hemisphere Westerlies regulated atmospheric CO2 during the last deglaciation C. Mayr; C. Mayr 1Institute of Geography, University of Erlangen-Nuremberg, Kochstrasse 4/4, 91054 Erlangen, Germany2Earth and Environmental Sciences/GeoBio-Center, University of Munich, Richard-Wagner-Strasse 10, 80333 Munich, Germany Search for other works by this author on: GSW Google Scholar A. Lücke; A. Lücke 3Institute of Bio- and Geosciences 3: Agrosphere, Research Center Jülich, 52425 Jülich, Germany Search for other works by this author on: GSW Google Scholar S. Wagner; S. Wagner 4Institute for Coastal Research, Helmholtz-Zentrum Geesthacht, Max-Planck-Strasse 1, 21502 Geesthacht, Germany Search for other works by this author on: GSW Google Scholar H. Wissel; H. Wissel 3Institute of Bio- and Geosciences 3: Agrosphere, Research Center Jülich, 52425 Jülich, Germany Search for other works by this author on: GSW Google Scholar C. Ohlendorf; C. Ohlendorf 5Institute of Geography, University of Bremen, Celsiusstrasse FVG-M, 28359 Bremen, Germany Search for other works by this author on: GSW Google Scholar T. Haberzettl; T. Haberzettl 6Institute of Geography, University of Jena, Löbdergraben 32, 07743 Jena, Germany Search for other works by this author on: GSW Google Scholar M. Oehlerich; M. Oehlerich 2Earth and Environmental Sciences/GeoBio-Center, University of Munich, Richard-Wagner-Strasse 10, 80333 Munich, Germany Search for other works by this author on: GSW Google Scholar F. Schäbitz; F. Schäbitz 7Seminar for Geography and Education, University of Cologne, Gronewaldstrasse 2, 50931 Cologne, Germany Search for other works by this author on: GSW Google Scholar M. Wille; M. Wille 7Seminar for Geography and Education, University of Cologne, Gronewaldstrasse 2, 50931 Cologne, Germany Search for other works by this author on: GSW Google Scholar J. Zhu; J. Zhu 3Institute of Bio- and Geosciences 3: Agrosphere, Research Center Jülich, 52425 Jülich, Germany Search for other works by this author on: GSW Google Scholar B. Zolitschka B. Zolitschka 5Institute of Geography, University of Bremen, Celsiusstrasse FVG-M, 28359 Bremen, Germany Search for other works by this author on: GSW Google Scholar Geology (2013) 41 (8): 831–834. https://doi.org/10.1130/G34335.1 Article history received: 19 Dec 2012 rev-recd: 04 Mar 2013 accepted: 06 Mar 2013 first online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation C. Mayr, A. Lücke, S. Wagner, H. Wissel, C. Ohlendorf, T. Haberzettl, M. Oehlerich, F. Schäbitz, M. Wille, J. Zhu, B. Zolitschka; Intensified Southern Hemisphere Westerlies regulated atmospheric CO2 during the last deglaciation. Geology 2013;; 41 (8): 831–834. doi: https://doi.org/10.1130/G34335.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract The causes for the rise of atmospheric CO2 during the last deglaciation are complex and remain a matter of controversial scientific discussion. One hypothesis explains this phenomenon with CO2 release from the deep ocean. A change in atmosphere-ocean interaction induced by a shift or intensification of Southern Hemisphere Westerlies (SHW) could have stimulated this process. Here this hypothesis is tested using oxygen isotope ratios of aquatic cellulose from Patagonian lacustrine sediments as west-wind proxy. Our record indicates maximum SHW strength at 52°S between 13.4 and 11.3 calibrated kyr B.P. This is in agreement with an increase in zonal wind strength extending to the southern mid-latitudes during the Younger Dryas chronozone triggering the final CO2 increase. Comparison with other Southern Hemisphere records implies southward migration of strengthened SHW at that time, leading to interglacial CO2 levels and hence terminating the Last Glacial. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.