Meteo481-Oct_2_2008 - The Urban Environment...

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The Urban Environment http://www.everyscape.com/
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The Urban Heat Island
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Urban Heat Island The increased air temperatures in urban areas as contrasted to the cooler surrounding rural areas. Source: Lawrence Berkeley National Lab.
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Rapid Urbanization Lack of surface water (soil water) and vegetation. Low short-wave reflectivity (albedo). Increased heat release. Source: EPA & Rice University
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Mesoscale circulation and convection Source: NASA Global Hydrology and Climate Center Stagnant condition Gradient wind condition
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Mesoscale circulation and convection Source: NASA Global Hydrology and Climate Center Convective precipitation associated with the excess heat.
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Mesoscale circulation and convection Source: NASA Global Hydrology and Climate Center Increased precipitation (7 ~ 50% greater). Maximum rainfall rates (48 ~116 % greater) downwind of major cities. Mean monthly rainfall during the warmer season (May ~ Sept.) from 1998~2000.
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Lightning and the City
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This note was uploaded on 02/13/2009 for the course METEO 481 taught by Professor Gadomski,f during the Fall '08 term at Pennsylvania State University, University Park.

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Meteo481-Oct_2_2008 - The Urban Environment...

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