Precipitation and Evolution Sensitivity in Simulated Deep Convective Storms: Comparisons between Liquid-Only and Simple Ice and Liquid Phase Microphysics*

Weisman and Klemp suggested that their liquid-only, deep convective storm experiments should be repeated with a liquid-ice microphysics scheme to determine if the solutions are qualitatively the same. Using a threedimensional, nonhydrostatic cloud model, such results are compared between three microphysics schemes: the ''Kessler'' liquid-only scheme (used by Weisman and Klemp), a Lin-Farley-Orville-like scheme with liquid and ice parameterization (Li), and the same Lin-Farley-Orville-like microphysics scheme but with only liquid processes turned on (Lr). Convection is simulated using a single thermodynamic profile and a variety of shear profiles. The shear profiles are represented by five idealized half-circle wind hodographs with arc lengths (U s ) of 20, 25, 30, 40, and 50 m s 1 . The precipitation, cold pool characteristics, and storm evolution produced by the different schemes are compared.