Fig. 1 (IMAGE)
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Extreme precipitation days per decade due to greenhouse warming over the 21st century. The first step in deriving the pattern shown is identifying the once-in-ten-year events of maximum precipitation over 2000-2009 for the 100 simulations. Here, this threshold is chosen as the lowest of the top 100 values of precipitation. For the second step, the number of days over 2090-2099 that exceed the threshold value is counted, and thereby while a value of 1 on the scale (units of days) means that there is no change in future, a value of 6 indicates 5 additional days of extreme precipitation in future. Note that the color scale saturates at 12 days to emphasize the response over land, given the very large amplitude over the eastern equatorial Pacific domain.
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Institute for Basic Science
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