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The Advanced Study Program presents the 3rd seminar of the 2010-2011 ASP Seminar Series.
Who: Hugh Morrison of NESL/MMMWhere: Foothills Lab 2, Room 1022 Large Auditorium)When: Wednesday, November 10, 2010. 11:00 a.m.
Clouds remain one of the fundamental challenges in numerical simulation of weather and climate. The parameterization of cloud and precipitation particles (i.e., microphysics) is critical because it helps determine latent heating/cooling, coupling with radiative transfer, and precipitation at the surface, and has a direct impact on the dynamics across a wide range of spatial and temporal scales. This talk will give an overview of various approaches in parameterizing cloud and precipitation microphysics, with an emphasis on high resolution "cloud system resolving" models that permit deep convection. Key issues and uncertainties in current microphysics schemes will be discussed that are relevant to the simulation of deep convection, including treatment of the rain drop size distribution as well as precipitating ice (snow/graupel/hail). Finally, the impact of aerosols on simulations of deep convection will be described.
Refreshments will be served prior to the seminar.