Abrupt change of Antarctic moisture origin at the end of Termination II

被引：57

作者：

Masson-Delmotte, V. ^{[1
]}

Stenni, B. ^{[2
]}

Blunier, T. ^{[3
]}

Cattani, O. ^{[1
]}

Chappellaz, J. ^{[4
]}

Cheng, H. ^{[5
]}

Dreyfus, G. ^{[1
]}

Edwards, R. L. ^{[5
]}

Falourd, S. ^{[1
]}

Govin, A. ^{[1
]}

Kawamura, K. ^{[6
]}

Johnsen, S. J. ^{[3
]}

Jouzel, J. ^{[1
]}

Landais, A. ^{[1
]}

Lemieux-Dudon, B. ^{[4
]}

Lourantou, A. ^{[4
]}

Marshall, G. ^{[7
]}

Minster, B. ^{[1
]}

Mudelsee, M. ^{[8
,9
]}

Pol, K. ^{[1
]}

Roethlisberger, R. ^{[7
]}

Selmo, E. ^{[10
]}

Waelbroeck, C. ^{[1
]}

机构：

[1] Univ Versailles, CNRS,CEA Saclay,Lab Sci Climat & Environm, St Quentin Unite Mixte Rech 8212, Inst Pierre Simon Laplace Commissariat Energie At, F-91191 Gif Sur Yvette, France

[2] Univ Trieste, Dept Geosci, I-34127 Trieste, Italy

[3] Univ Copenhagen, Ctr Ice & Climate, Niels Bohr Inst, DK-2100 Copenhagen, Denmark

[4] Univ Joseph Fourier 5183, CNRS, Lab Glaciol & Geophys Environm, F-38402 St Martin Dheres, France

[5] Univ Minnesota, Dept Geol & Geophys, Minneapolis, MN 55455 USA

[6] Res Org Informat & Syst, Natl Inst Polar Res, Tokyo 1908518, Japan

[7] NERC, British Antarctic Survey, Cambridge CB3 0ET, England

[8] Climate Risk Anal, D-30167 Hannover, Germany

[9] Alfred Wegener Inst Polar & Marine Res, Climate Sci Div, D-25570 Bremerhaven, Germany

[10] Univ Parma, Dept Earth Sci, I-43100 Parma, Italy

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2010年 / 107卷 / 27期

基金：

美国国家科学基金会;

关键词：

last interglacial; paleoclimate; westerlies; EPICA DOME-C; SOUTHERN-HEMISPHERE; MILLENNIAL-SCALE; OCEAN; CIRCULATION; REVERSAL;

D O I：

10.1073/pnas.0914536107

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The deuterium excess of polar ice cores documents past changes in evaporation conditions and moisture origin. New data obtained from the European Project for Ice Coring in Antarctica Dome C East Antarctic ice core provide new insights on the sequence of events involved in Termination II, the transition between the penultimate glacial and interglacial periods. This termination is marked by a north-south seesaw behavior, with first a slow methane concentration rise associated with a strong Antarctic temperature warming and a slow deuterium excess rise. This first step is followed by an abrupt north Atlantic warming, an abrupt resumption of the East Asian summer monsoon, a sharp methane rise, and a CO2 overshoot, which coincide within dating uncertainties with the end of Antarctic optimum. Here, we show that this second phase is marked by a very sharp Dome C centennial deuterium excess rise, revealing abrupt reorganization of atmospheric circulation in the southern Indian Ocean sector.

引用

页码：12091 / 12094

页数：4

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