Modelling of cloud electrification

We developed a cloud electrification model (CEM) which describes the evolution of the electric field in clouds, including electric discharges. Our CEM simulates evolution of charge of individual hydrometeors (cloud droplets, rain droplets, ice, snow, graupel) and models the distribution of positive and negative ions. Using this model, we compared the evolution of electric charge and electric field for selected winter and summer thunderstorms that occurred close to the Milešovka meteorological observatory. We analysed the dataset of thunderstorms using measurements of Ka-band cloud profiler and X-band weather radar, both located at the Milešovka observatory, and standard meteorological measurements. The analyses include a comparison of the structure of the modelled thunderstorms with the structure derived from radar and satellite observations.