孟州一次雾霾天气的成因及影响

Causes and Effects of Misty Weather in Mengzhou

本文利用地面、探空观测资料,对孟州一次典型雾霾天气的成因进行分析,一是天气条件,二是人类工业活动。在雾霾发生、发展及消散过程中,较低的地面气压梯度和风速是形成雾霾的有利条件,气压梯度的增加、水平风速的增大则利于雾霾的消散;低层大气湿度增加、逆温层加强利于雾霾的发生、发展,反之,利于雾霾的减弱、消散。人类工业活动以及汽车尾气等产生的PM2.5/10浓度的大小是雾霾成因的关键因子,对其有效治理能够减轻雾霾的严重程度。

This paper analyzes the causes of a typical fog the weather conditions, and the two is human industrial and haze in Mengzhou by using ground and sounding data. First, activities. In the haze occurrence, development and dissipation process, low surface pressure gradient and wind speed are favorable conditions for the formation of haze, increasing the level of wind speed increases, the pressure gradient is conducive to haze dissipated; low air humidity increases, the inversion layer to strengthen the haze occurrence and development, on the other hand, in favor of haze weakened, dissipation. The concentration of PM2.5/10 produced by human industrial activities and automobile exhaust gas is the key factor of haze formation, and the effective treatment can reduce the severity of fog and haze.