“4.12”强沙尘暴中小尺度天气分析

A Meso-micro scale synoptic analysis of strong dust storm on 12 April 2000

利用地面气压场 ,有关气象站的气压、气温、湿度、风速自记资料 ,对 2 0 0 0年 4月 12日天气过程进行了分析和研究。分析结果表明 ,这次强沙尘暴的触发系统主要是冷锋过境 ,而中小尺度系统扰动则起到了激发和加强作用。

With the surface pressure and related auto-record data ,such as pressure, temperature, humidity and wind velocity ,the weather process of the heavy dust storm occurred on 12 April 2000 is analyzed ,the result shows that its introducing system is mainly a passing cold front ,but the mesoscale system turbulence is strengthen and stimulating it.