UMass Amherst- Geoscientists say stalagmites in Brazil confirm 9,000-year model of diminishing rainfallUntil recently, researchers studying climate history in Brazil's dry Nordeste region expected it to have wet and dry periods similar to the rest of South America. But over the past 9,000 years, the region has shown just the opposite, drought when rain was expected, and vice versa. Researchers from the Geosciences Department and the University of Sao Paolo, with others, report this week that they've identified the cause as a surprising air circulation pattern. More...2/26/09 The PDF files on this page require the free Adobe Acrobat Reader. |
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