Numerical Simulations of the Microburst
微下击暴流的数值模拟

A two-dimensional, slab-symmetric microburst numerical model with very fine special resolutionis developed and used to simulate the formation and evolution of the dry and wet microburst lines.Some satisfactory results are obtained. The structure and evolution features of the simulated wetmicroburst lines are coincident with the observations quite well. The dry microbursts, driven by theevaporative cooling of the ice crystal precipitating element falling in a dry adiabatic layer, only producea little ground rainfall and temperature drops. A weak stable layer several hundred meters thick cansignificantly block and weaken the dry type microbursts.