Research findings The goals of this work were: (1) to improve the University of Washington shallow cumulus parameterization, first developed by the PI's group for better simulation of shallow oceanic cumulus convection in the MM5 mesoscale model (Bretherton et al., 2004, Mon. Wea. Rev.), (2) to explore its applicability to deep (precipitating) cumulus convection. (3) to explore fundamental physical issues related to this cumulus parameterization The graduate student who was recruited to perform

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... the research left after two years with essentially nothing accomplished, so almost all of the research progress occurred during the third year and the no-cost extension. Nevertheless, several important peer-reviewed publications ultimately emerged from the funded research. Their new scientific findings are described below. 1. Cloud-resolving simulation of a transition from shallow to deep convection (Kuang and Bretherton 2006)