上海市青浦区PM_(10)污染与气象要素的关系

Analysis on Relationship between PM_(10) Concentration and Meteorological Elements in Qingpu District Shanghai

利用2006年-2010年上海市青浦区PM10和同期地面气象要素的监测资料,定量分析PM10的季节变化规律以及PM10与降雨量、大气湿度和风速之间的关系。分析结果表明:PM10浓度在夏季处于低值,冬季处于高值;5 mm/d以上的降雨对PM10有显著的清除作用,且春夏季降雨的清除作用大于秋冬季节。PM10浓度与大气湿度基本呈负相关关系。风速在一定范围内有利于PM10的扩散但不至造成扬尘,春季的适宜风速是1.5～3.5m/s,冬季的适宜风速是1.5～2.5 m/s。

Based on the monitored data of PM10 and surface meteorological elements during 2006 and 2010,the thesis analyzes the seasonal variety of PM10 mass concentration and its relationship between rainfall,air humidity and wind speed in fixed quantity in Qingpu district of Shanghai.The results show that PM10 mass concentration is low in summer and high in winter;rainfall more than 5 millimetre per day eliminates the pollution of PM10.The elimination effects in spring and summer are better.There is a negative correlation between PM10 mass concentration and air humidity.Wind speed in certain range is helpful for pollutant diffusion without raising dust.The appropriate wind speed is 1.5~3.5 m/s in spring and 1.5~2.5 m/s in winter.