Based on air pollution data and meteorological observation data in Changzhou from 2012 to 2014, the monthly vari-ation and seasonal variation of the pollutant concentration, the relationship between air pollution and visibility, meteorological ele-ments were analyzed. The results are as follows. Wind has a good diffusion and dilution effect on the air pollutants, the greater the wind, the lower the concentration of pollutants. Precipitation has a good washing and sedimentation effect on the air pollutants, the greater the rainfall and the longer the duration, the lower the concentration of pollutants. The direct relationship between air temperature and pollutant concentration is small. However, due to the low concentration of pollutants in summer, the higher the temperature, the lower the concentration of pollutants, which is on the contrary in winter. Therefore, the overall temperature and pollutant concentrations are inversely related. Relative humidity has a certain effect on the concentration of each pollutant. Under suitable humidity conditions, the water vapor has a better adsorption effect on pollutants, and it is favorable for the formation and growth of particulate matter.%利用2012年-2014年常州市大气污染数据、气象观测数据,通过分析污染物浓度的月变化、季节变化,污染物浓度与能见度及各气象要素间的关系,得到以下结论:风对大气污染物具有较好的扩散、稀释作用,风力越大,污染物浓度越低;降水对大气污染物具有较好的冲刷、沉降作用,降水量越大,持续时间越长,污染物浓度越低;气温与污染物浓度直接关系较小,但由于夏季污染物浓度较低,表现为气温越高污染物浓度越低;冬季反之,故从整体上看气温与污染物浓度呈反相关关系;相对湿度对各污染物浓度有一定影响,在适宜的湿度条件下,水汽对污染物有较好的吸附作用,有利于颗粒物等的生成和增长.
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