Diagnostic Analysis and Numerical Simulation of Severe Sandstorm in Northern China
Using the observation data,a severe dust storm weather in northern China on 22-24 April 2009 is studied,and the relationship between the meteorological variables at surface and the intensity of dust storm on 22 April 2009 is analyzed.The results show that the variations of the temperature,pressure and the wind speed are closely related to intensity of the sandstorm.Mongolian cyclone and its cold front are the main system of the strong dust storm occurring.Temperature advection,vorticity advection,vertical velocity and potential vorticity play an important role in the cyclone development.The simulated results show that it is better to simulate the evolution of the surface characteristic of cyclone and strong wind,and there is good correlation between surface wind areas and duststorm.
NETL
NSTL
万方数据
维普
