一次大范围持续性灰霾天气的形成机理分析研究

针对一次持续性灰霾天气,以处于核心污染区域的江苏省镇江市的空气污染状况为研究对象,对大气污染整体水平、各污染物的浓度状况及其相关性的分析,并结合气象参数中的风速、相对湿度、大气能见度,初步揭示此次镇江市持续性灰霾产生的主要原因是城市中汽车尾气的大量排放和持续性静稳气象条件的存在,指出当污染物排放总量超过了区域环境容量时,在适当气象条件下就会形成灰霾天气。

Analysis on Formation Mechanism of a Large Persistent Haze

Focused on a continuous haze weather, the status of air pollution in the key pollution areas of Zhenjiang city inJiangsu Province was taken as the research objectby analyzing the status of each pollutant concentration, atmospheric pollution level, and its correlation with meteorological parameters, like wind speed, relative humidity, atmospheric visibility. It is concludedthat main reason for this persistent haze is the automobile exhaust emissions and persistent static weather condition. This studypointed out that when the total pollutant emissionamount exceed the regional environmental capacity, haze weather will be formedunder appropriate meteorological conditions.