垫江县气象因子与空气质量和PM_(10)浓度的相关性分析

The Correlation Analysis of Air Quality , Meteorological Factors and the Concentration of PM_10 in Dianjiang County

引用2011年垫江县空气自动监测站提供的数据,对垫江县空气质量进行统计和分析,发现有50d空气污染指数大于100,首要污染物为PM10,冬季污染最严重。并结合相对湿度、平均风速、降水量、雾等气象因子进行分析,得出相对湿度和平均风速分别为51%～80%和0.3～1.5m/s时与PM10的浓度呈正相关,降水量与PM10的浓度呈负相关,雾天空气质量普遍较差。

This paper carries out a statistical analysis of air quality in Dianjiang County by referring to the data from the automatic air quality monitoring stations in Dianjiang in 2011. The result shows that the air pollution index is higher than 100 in fifty days, and PM10 is the main pollutant which is worst in winter. Moreover, the analysis done in combination with such meteorological factors as relative humidity, average wind speed, precipitation and fog shows that the concentration of PM10 is positively correlated with relative humidity （51 %-80%;） and average wind speed （0.3--1.5 m/s）, but negatively correlated with the amount of precipitation. In general, the air quality is rela- tively poor in foggy days.