Stable sea surface temperatures in the western Pacific warm pool over the past 1.75 million years

Thibault de Garidel-Thoron (), Yair Rosenthal, Franck Bassinot and Luc Beaufort
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Thibault de Garidel-Thoron: Institute of Marine and Coastal Sciences-Rutgers University
Yair Rosenthal: Institute of Marine and Coastal Sciences-Rutgers University
Franck Bassinot: Laboratoire des Sciences du Climat et de l'Environnement–CEA
Luc Beaufort: CEREGE-CNRS Université Aix-Marseille 3

Nature, 2005, vol. 433, issue 7023, 294-298

Abstract: Sea change for climate The first high-resolution record of Pleistocene climate changes from the western Pacific warm pool provides important information about climate change in the region, and will have implications for our understanding of how Earth's climate went into the mode of glacial/interglacial transition that has persisted for the past 800,000 years. The record uses Mg/Ca ratios in planktonic foraminifera as a proxy of sea surface temperatures during the past 1.75 million years. The results reveal a long period of stability in the region, which is not consistent with a gradual decrease in atmospheric CO2 as the trigger for glaciation. Rather, redistribution of Pacific sea surface temperatures by changes in zonal circulation could have affected the global climate, supporting recent concerns about the responses of the tropics to future changes.

Date: 2005
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DOI: 10.1038/nature03189

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