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Viable But Variable Ancient El Niño Spied

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Science  12 May 2000:
Vol. 288, Issue 5468, pp. 945
DOI: 10.1126/science.288.5468.945a

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Summary

A climate record preserved in the bottoms of now-vanished lakes in New England shows traces of El Niño as far back as 17,500 years ago. The findings, reported on page 1039 of this issue, indicate that the tempo of tropical Pacific warmings remained roughly constant, but the beat strengthened and weakened for thousands of years at a time.