河北南部空气污染特征及其气象条件分析

Analysis of air pollution characteristics and meteorological conditions in the southern of Hebei

在一定条件下,空气污染物浓度除与污染源排放程度有关外,也受气象条件影响。文章以河北省南部城市邯郸为研究对象,采用邯郸市环境监测站质量浓度资料及同期气象资料,利用统计方法,结合邯郸市空气污染物时空变化特征,对空气污染及其气象条件影响进行分析。结果表明,邯郸市的空气质量总体以轻度污染为主,空气质量指数AQI和空气污染物SO2、NO2、NO、PM10、PM2.5质量浓度变化趋势一致,均为秋冬季污染严重,O3变化情况与之相反,夏季严重;邯郸市空气质量指数AQI有一个高值中心、一个低值中心,刮东南风时不利于污染物扩散,污染最大;降水和适量的风对空气污染物有明显的扩散稀释作用,但均有一个临界值;气温与AQI呈负相关。

Under certain conditions, the concentration of air pol utants in addition to the degree of emission sources related, but also affected by weather conditions. In this paper, the southern city of Handan, Hebei Province as the research object, using meteorological data Handan City Environmental Monitoring Station data and the mass concentration of the same period, the use of statistical methods, combined with spatial and temporal variation of air pol utants in Handan City, the impact on air pol ution and meteorological conditions were analysed. The results showed that the overal air quality in Handan City to light pol ution based, air quality index AQI and air pol utants SO2, consistent quality changed in the concentration NO2, NO, PM10, PM2.5 trend, both autumn and winter pol ution was serious, O3 changed in contrast, summer severe;Handan City air Quality Index AQI had a high value center, a low center of scraping southeast wind was not conducive to the spread of pol utants, pol ution maximum; rainfal and the amount of air to air pol utants significantly diffusion dilution effect, but had a critical value;AQI was negatively correlated with temperature.