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Long-Term Droughts, Rain Failures Revealed Through Tree-Ring Study
2013-03-12 10:21:29

A new tree-ring study, led by the University of Arizona, reveals that long-term droughts in Southwestern North America often mean a failure of both summer and winter rains. This contradicts a long held belief that a dry winter rainy season is usually followed by a wet monsoon season, or vice versa.