牡丹江市污染物浓度变化与气象要素关系分析

利用牡丹江市(2005—2011年)大气污染物(SO2、NO2、PM10)浓度实际监测数据及同期地面气象要素场资料、天气图资料,分析了污染物浓度变化与气象条件的关系。结果表明,夏季降水对污染物的稀释有一定影响,1.0 mm以下降水对污染物的稀释作用不明显。但降水量R≥10 mm时降水对污染物的稀释作用较大,一些污染物浓度减少概率占60%以上。当风速小于1 m/s时,污染物浓度明显偏大,冬季浓度是夏秋季节浓度的2倍多。

Analysis of Relationship between Pollutant Concentration and Meteorological Factors in Mudanjiang City

The actual monitoring data of atmospheric pollutant(SO2,NO2 and PM10) concentrations in Mudanjiang City(2005—2011),as well as ground meteorological data and weather map data at the same period are used to analyze the relationship between pollutant concentrations and meteorological conditions.The results show that summer precipitation has certain impact on dilution of pollutants,the precipitation below 1.0 mm has no significant dilution effect on pollutants.When precipitation R≥10 mm,the precipitation has relatively larger dilution effect on pollutants,the reduction probability of some pollutants accounts more than 60%.When wind speed is less than 1 m/s,the pollutant concentration is obviously larger,the pollutant concentration in winter is 2 times higher than that in summer and autumn.