NUMERICAL SIMULATION OF MICROPHYSICAL PROCESSES IN CUMULONIMBUS——PART Ⅱ CASE STUDIES OF SHOWER,HAILSTORM AND TORRENTIAL RAIN

A shower cloud observed in Jiangxi,a hailstorm observed in Hebei and "75.8" torrential rain in Henan are simulated with our microphysical model in a one-dimensional framework.The model,using the radiosonde data as input,gets its output which shows agreement in many aspects as compared with observations in each case.The glaciation of small cumulus cloud,low precipitation efficiency of hailstorm and the persistence of torrential rain are demonstrated.It is also shown that the Bergeron process has little influence,but the warm-rain process plays an important role in the formation of precipitation in cumulonimbus with a warm cloud base.