Monday, 17 August 2009: 12:00 AM
The Canyons (Sheraton Salt Lake City Hotel)
This paper discusses potential impacts of aerosols and nucleation processes on cloud dynamics and thermodynamics of tropical convective clouds. Deep convection and accompanying cloud formation play an important role in radiative forcing of climate and hydrological cycle in the tropics. However, possible effects of anthropogenic aerosols on these clouds in days to monthly time scale are still not well understood. Recent studies show that the convective processes become more organized and stronger with increase of aerosols. A set of idealized 2D simulations with different aerosol profiles will be implemented with the cloud resolving model, University of Wisconsin Nonhydrostatic Modeling System, and the growth-history preserving microphysical scheme, Advanced Microphysical Prediction System. Dynamical feedback of aerosols and structure of storms are discussed.
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