The work is devoted to investigate the aerosols influence on the parameters of thunderclouds. Numerical simulations of thunderstorms in Nizhny Novgorod region using the WRF-ARW model with parameterizations of microphysics with and without aerosols were compared. Also the modeling radar reflectivity was compared with the radar data. In line with the simulations of the change in CAPE the following features were detected: when aerosols are taken into account, the area occupied by a convective event increases, and the peak of convective activity shifts in time. Thus, consideration of aerosols in mesoscale modeling of atmospheric dynamics and electrification processes is important.
A new approach for taking into account the impact of turbulence on thunderstorm electrification using the numerical model WRF-ARW is presented. For this, a method for calculating the turbulent energy dissipation rate on the basis of the radar reflectivity distribution and characteristic values of the turbulent energy dissipation rate in various types of clouds is developed. The charging current is corrected by the value of the turbulent current component determined for the obtained turbulent energy dissipation rate. Thus, calculation of the electric parameters (electric potential and electric field) of thunderclouds is carried out taking into account the influence of turbulent mixing on thunderstorm electrification.
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