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Science 16 March 2001:
Vol. 291. no. 5511, pp. 2132 - 2134
DOI: 10.1126/science.1057131
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Reports

Synchronous Tropical South China Sea SST Change and Greenland Warming During Deglaciation

M. Kienast,1* S. Steinke,2 K. Stattegger,2 S. E. Calvert1

The tropical ocean plays a major role in global climate. It is therefore crucial to establish the precise phase between tropical and high-latitude climate variability during past abrupt climate events in order to gain insight into the mechanisms of global climate change. Here we present alkenone sea surface temperature (SST) records from the tropical South China Sea that show an abrupt temperature increase of at least 1°C at the end of the last glacial period. Within the recognized dating uncertainties, this SST increase is synchronous with the Bølling warming observed at 14.6 thousand years ago in the Greenland Ice Sheet Project 2 ice core.

1 Earth and Ocean Sciences, University of British Columbia, Vancouver, B.C. Canada V6T 1Z4.
2 Institut für Geowissenschaften, Universität Kiel, Kiel, Germany.
*   To whom correspondence should be addressed. E-mail: kienast{at}unixg.ubc.ca

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