Deep Convection-Aerosol Interactions using a Double Moment Convective Cloud Microphysical Scheme in the Kain-Fritsch Convection Parameterization
WRF model simulations using 12 km grid spacing were performed using a multi-scale version of the Kain-Fritsch scheme for the summer of 2006 over the continental US. In the first simulation, the default simple autoconversion scheme was used. A second set of simulations used a double moment convective microphysical scheme with varying aerosol concentrations. In the last simulation, climatological profiles of aerosol concentrations were used.
We find that model-predicted parameterized convective precipitation decreases with increased aerosol concentrations. Observed precipitation amounts and distributions are compared with each of these simulations and these results will be presented.