Northern Hemisphere forcing of climatic cycles in Antarctica over the past 360,000 years

Kenji Kawamura (), Frédéric Parrenin, Lorraine Lisiecki, Ryu Uemura, Françoise Vimeux, Jeffrey P. Severinghaus, Manuel A. Hutterli, Takakiyo Nakazawa, Shuji Aoki, Jean Jouzel, Maureen E. Raymo, Koji Matsumoto, Hisakazu Nakata, Hideaki Motoyama, Shuji Fujita, Kumiko Goto-Azuma, Yoshiyuki Fujii and Okitsugu Watanabe
Additional contact information
Kenji Kawamura: Center for Atmospheric and Oceanic Studies, Graduate School of Science, Tohoku University
Frédéric Parrenin: Laboratoire de Glaciologie et Geophysique de l’Environnement, CNRS/UJF, 54 rue Molière, 38400 Grenoble, France
Lorraine Lisiecki: Boston University, 685 Commonwealth Avenue, Boston, Massachusetts 02215, USA
Ryu Uemura: National Institute of Polar Research, Research Organization of Information and Systems, 1-9-10 Kaga, Itabashi-ku, Tokyo 173-8515, Japan
Françoise Vimeux: Institut de Recherche pour le Développement (IRD)
Jeffrey P. Severinghaus: Scripps Institution of Oceanography, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0244, USA
Manuel A. Hutterli: British Antarctic Survey, High Cross, Madingley Road, Cambridge CB3 0ET, UK
Takakiyo Nakazawa: Center for Atmospheric and Oceanic Studies, Graduate School of Science, Tohoku University
Shuji Aoki: Center for Atmospheric and Oceanic Studies, Graduate School of Science, Tohoku University
Jean Jouzel: IPSL/LSCE, Laboratoire des Sciences du Climat et de l’Environnement, UMR CEA-CNRS-UVSQ, CE Saclay, Orme des Merisiers, 91191 Gif-sur-Yvette, France
Maureen E. Raymo: Boston University, 685 Commonwealth Avenue, Boston, Massachusetts 02215, USA
Koji Matsumoto: Center for Atmospheric and Oceanic Studies, Graduate School of Science, Tohoku University
Hisakazu Nakata: Center for Atmospheric and Oceanic Studies, Graduate School of Science, Tohoku University
Hideaki Motoyama: National Institute of Polar Research, Research Organization of Information and Systems, 1-9-10 Kaga, Itabashi-ku, Tokyo 173-8515, Japan
Shuji Fujita: National Institute of Polar Research, Research Organization of Information and Systems, 1-9-10 Kaga, Itabashi-ku, Tokyo 173-8515, Japan
Kumiko Goto-Azuma: National Institute of Polar Research, Research Organization of Information and Systems, 1-9-10 Kaga, Itabashi-ku, Tokyo 173-8515, Japan
Yoshiyuki Fujii: National Institute of Polar Research, Research Organization of Information and Systems, 1-9-10 Kaga, Itabashi-ku, Tokyo 173-8515, Japan
Okitsugu Watanabe: National Institute of Polar Research, Research Organization of Information and Systems, 1-9-10 Kaga, Itabashi-ku, Tokyo 173-8515, Japan

Nature, 2007, vol. 448, issue 7156, 912-916

Abstract: Astronomical climate change The Croll–Milankovitch theory of climate change proposes that glacial–interglacial cycles are driven by changes in the amount of solar radiation reaching the Earth's surface at high northern latitudes in summer, in turn caused by changes in orbital geometry. To test this hypothesis Kawamura et al. constructed a new chronology for Antarctic ice cores using a proxy — the ratio of oxygen to nitrogen molecules in air trapped in the ice — that reflects changes in local summer insolation. The results show that orbital-scale Antarctic climate change has lagged Northern Hemisphere insolation during the past 360,000 years, and that increases in Antarctic temperature at the last four glacial–interglacial transitions took place within phases of increasing Northern Hemisphere summer insolation. The findings therefore support the Croll–Milankovitch hypothesis.

Date: 2007
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DOI: 10.1038/nature06015

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