Numerical Simulation of a Hybrid-Type Hailstorm in Munich and the Mechanism of Hail Formation
慕尼黑一次混合型雹暴的数值模拟与成雹机制

A three-dimensional hailstorm numerical model with detailed microphysical processes is used to simulate a hybrid-type hailstorm occurring in Munich,south of Germany.The simulated radar echo structure and the characteristics of supercooled raindrop zone are in agreement with the analyzed results revealed by Doppler radar measurements.The simulated results show that the hailstone embryos are frozen drops and graupel particles,and their numbers are equivalent.Although the accumulation zone of supercooled raindrops is not present,raindrops exist in the main updraft zone of the storm considered,which play an important role in the hailstone formation.The mechanism of hail formation is very different at various stages of hailstorm developing.