长顺县空气质量及气象要素对主要大气污染物的影响

The air quality and the influence of meteorological elements on major air pollutants in Changshun Country

该文利用长顺县2016年1月-2018年7月共868组气象要素资料及空气质量资料,分析了长顺县空气质量状况及气象要素对主要大气污染物的影响。监测期间长顺空气质量等级Ⅰ、Ⅱ日数和占总体的97.7%,轻度污染日数占比为2.5%,空气质量良好。长顺县主要大气污染物依次为PM2.5(36.8%)、O3(33.8%)、PM10(30.4%)。主要大气污染物与气象要素的相关性不尽相同,日平均气温和日相对湿度对主要大气污染物的影响比日累计降水量、日平均风速大。主要大气污染物与气象要素间的逐步回归方程组模型预报准确率较好。

By using the 868 groups meteorological elements and the air quality data of Changshun county from January 2016 to July 2018,this paper analyzed the air quality status of Changshun County and the impact of meteorological elements on major atmospheric pollutants. Air quality grades I and II accounted for 97.7% of the total during the monitoring period,the proportion of lightly polluted days is 2.5%. The three major atmospheric pollutants are PM 2.5 (36.8%),O 3 (33.8%) and PM 10 (30.4%),the air quality here is great. The correlation between the major atmospheric pollutants and the meteorological elements are different. The effects of daily average temperature and daily relative humidity on major atmospheric pollutants are more significant than daily cumulative precipitation and daily average wind speed. The stepwise regression equation model of the main atmospheric pollutants and meteorological elements has a good prediction accuracy.