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Science 317, 5839 (2007) 793 à 796
Orbital and Millennial Antarctic Climate Variability over the Past 800,000 Years
Jean Jouzel1, Valérie Masson-Delmotte1, O. Cattani1, G. Dreyfus1, S. Falourd1, Georg Hoffmann1, B. Minster1, J. Nouet1, Jean-Marc Barnola2, Jérôme Chappellaz2, Hubertus Fischer3, J. C. Gallet2, Sigfus Johnsen4, 5, Markus Leuenberger6, Laetitia Loulergue2, Dieter Lüthi6, H. Oerter3, F. Parrenin2, G. Raisbeck7, Dominique Raynaud2, A. Schilt6, Jakob Schwander6, E. Selmo8, Roland Souchez9, Renato Spahni6, Bernard Stauffer6, J. P. Steffensen2, Barbara Stenni10, Thomas F. Stocker6, J. L. Tison9, M. Werner11, E. Wolff12

A high-resolution deuterium profile is now available along the entire European Project for Ice Coring in Antarctica Dome C ice core, extending this climate record back to marine isotope stage 20.2, 800,000 years ago. Experiments performed with an atmospheric general circulation model including water isotopes support its temperature interpretation. We assessed the general correspondence between Dansgaard-Oeschger events and their smoothed Antarctic counterparts for this Dome C record, which reveals the presence of such features with similar amplitudes during previous glacial periods. We suggest that the interplay between obliquity and precession accounts for the variable intensity of interglacial periods in ice core records.
1 :  LSCE - UMR 8212 - Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette]
2 :  LGGE - Laboratoire de glaciologie et géophysique de l'environnement
3 :  Abteilung Klinische Sozialmedizin, Berufs- und Umweltdermatologie
4 :  Department of Geophysics
5 :  Science Institute
6 :  Physics Institute
7 :  CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse
8 :  Department of Earth Sciences
9 :  Département des Sciences de la Terre et de l'Environnement
10 :  Department of Geological, Environmental and Marine Sciences
11 :  Max Planck Institute for Biogeochemistry
12 :  BAS - British Antarctic Survey
Planète et Univers/Sciences de la Terre/Glaciologie