气象学报2001，Vol.59Issue(2)：182-195,14.
微下击暴流的特征及其数值模似
CHARACTERISTICS AND NUMERICAL SIMULATION OF MICROBURST
摘要
Abstract
The charcateristics of microburst were described,and the Doppler velocity field structure of a wet-type microburst occurring on July 22,1997 in Beijing area has been researched.Using nonhydrostatic compressible meso-γ model,the main structure and evolution processes of this wet-type microburst lines have been simulated,and the result of the simulation is very close to the measurement of the Doppler radar.The result shows that,under the environment of high temperature,high humidity,but with small vertical wind shear,the evolution of the downdraft is not fully supported by the negative buoyancy due to temperature decrease by evaporation and melting.On the contrary,precipitation trailing force plays a main role in the procedure.This paper points out that,in different environment conditions,cloud-physics for the evolution of the microburst may be very different.关键词
微下击暴流/特征/数值模拟。分类
天文与地球科学引用本文复制引用
刘洪恩..微下击暴流的特征及其数值模似[J].气象学报,2001,59(2):182-195,14.
