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For the first time, evidence that global warming triggered a reversal in the circulation of deep ocean patterns around the world has been uncovered by scientists affiliated with the Scripps Institution of Oceanography. While the changes they describe occurred 55 million years ago, the scientists say today's conditions are similar and could have similar drastic effects on ocean circulation.
In today's issue of the journal "Nature," scientists Flávia Nunes and Richard Norris describe how they examined a four to seven degree warming period that occurred some 55 million years ago during the closing stages of the Paleocene and the beginning of the Eocene eras.

"The Earth is a system that can change very rapidly," said Nunes. "Fifty-five million years ago, when the Earth was in a period of global warmth, ocean currents rapidly changed direction and this change did not reverse to original conditions for about 20,000 years."



Scientist Flávia Nunes on board an oceanographic......

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Approximate Word Count: 865
Approximate Pages: 4 (250 words per double-spaced page)

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