Applied Mathematics Colloquium | |||
| Date: | November 24, 2009 from 2:45 pm to 3:45 pm EST | ||
| Location: | Columbia University Morningside Campus S.W. Mudd, Room 214 |
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| Contact: | For further information regarding this event, please contact APAM Department by sending email to seasinfo.apam@columbia.edu or by calling 212-854-4457. | ||
| Info: | Click Here to Visit Website. | ||
Caroline Muller Changes in the distribution of precipitation with global warming have many societal impacts and are not fully understood. Increases in precipitation extremes much larger than in mean precipitation have been reported, both in models and in observations. The mean precipitation is constrained by the global energy budget, precipitation extremes on the other hand need not be limited by global energetics; so what sets the strength of these extremes? The strength of precipitation extremes will be affected by thermodynamic changes in the saturation water vapor pressure, but changes in atmospheric dynamics also play a role through the updraft strength. Recent results suggest that climate models do not agree on the changes in updraft strengths associated with tropical precipitation extremes under global warming. We investigate this further by examining how updraft strength changes with warming in a high resolution cloud resolving model. |
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