Moisture transport across Central America as a positive feedback on abrupt climatic changes

Guillaume Leduc (), Laurence Vidal, Kazuyo Tachikawa, Frauke Rostek, Corinne Sonzogni, Luc Beaufort and Edouard Bard ()
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Guillaume Leduc: CEREGE, UMR6635, CNRS Université Paul Cézanne Aix-Marseille III, Collège de France, Europôle de l’Arbois, BP 80, 13545 Aix-en-Provence Cedex 04, France
Laurence Vidal: CEREGE, UMR6635, CNRS Université Paul Cézanne Aix-Marseille III, Collège de France, Europôle de l’Arbois, BP 80, 13545 Aix-en-Provence Cedex 04, France
Kazuyo Tachikawa: CEREGE, UMR6635, CNRS Université Paul Cézanne Aix-Marseille III, Collège de France, Europôle de l’Arbois, BP 80, 13545 Aix-en-Provence Cedex 04, France
Frauke Rostek: CEREGE, UMR6635, CNRS Université Paul Cézanne Aix-Marseille III, Collège de France, Europôle de l’Arbois, BP 80, 13545 Aix-en-Provence Cedex 04, France
Corinne Sonzogni: CEREGE, UMR6635, CNRS Université Paul Cézanne Aix-Marseille III, Collège de France, Europôle de l’Arbois, BP 80, 13545 Aix-en-Provence Cedex 04, France
Luc Beaufort: CEREGE, UMR6635, CNRS Université Paul Cézanne Aix-Marseille III, Collège de France, Europôle de l’Arbois, BP 80, 13545 Aix-en-Provence Cedex 04, France
Edouard Bard: CEREGE, UMR6635, CNRS Université Paul Cézanne Aix-Marseille III, Collège de France, Europôle de l’Arbois, BP 80, 13545 Aix-en-Provence Cedex 04, France

Nature, 2007, vol. 445, issue 7130, 908-911

Abstract: Reconstruction of sea surface salinities in the eastern equatorial Pacific Ocean over the past 90,000 years detected strong millennial-scale fluctuations that are associated with the migration of the tropical Atlantic Intertropical Convergence Zone. Thus, millennial-scale fluctuations of moisture transport constitute an important feedback mechanism for abrupt climate changes, modulating the North Atlantic freshwater budget and hence North Atlantic ocean circulation.

Date: 2007
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DOI: 10.1038/nature05578

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