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How Much More Rain Will Global Warming Bring?

Science  13 Jul 2007:
Vol. 317, Issue 5835, pp. 233-235
DOI: 10.1126/science.1140746

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Abstract

Climate models and satellite observations both indicate that the total amount of water in the atmosphere will increase at a rate of 7% per kelvin of surface warming. However, the climate models predict that global precipitation will increase at a much slower rate of 1 to 3% per kelvin. A recent analysis of satellite observations does not support this prediction of a muted response of precipitation to global warming. Rather, the observations suggest that precipitation and total atmospheric water have increased at about the same rate over the past two decades.

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