城市雾霾污染特征及其气象成因研究

Characteristics of Urban Haze Pollution and Its Meteorological Causes

针对城市雾霾污染日益加剧问题,提出城市雾霾污染特征及其气象成因分析。通过环境、气象监测站获取污染物浓度、气象因素指标及空气质量指数等数据信息,分析吉林长春市2016年12月雾霾污染期间的污染物浓度以及不同气象因素特征,从多方面研究雾霾污染的气象成因。实验结果表明:此次雾霾污染过程的空气质量指数处于轻中度污染与重度污染之间;随着能见度的不断下降,PM_(2.5)、PM_(10)、NO_(2)、SO_(2)污染物浓度呈增大趋势;相对湿度、温差不断上升,风速随之减小;降雨量少、风速小、气温高、相对湿度大是造成雾霾污染的重要原因。

In response to the increasing problem of urban haze pollution,this paper proposes an analysis of the characteristics and meteorological causes of urban haze pollution.By obtaining data information such as pollutant concentration,meteorological factor indicators,and air quality index through environmental and meteorological monitoring stations,this study analyzes the pollutant concentration and different meteorological factor characteristics during the haze pollution period in Changchun City,Jilin Province in December 2016,and studies the meteorological causes of haze pollution from multiple aspects.The experimental results indicate that the air quality index of this haze pollution process is between mild to moderate pollution and severe pollution.As visibility continues to decrease,the concentrations of PM_(2.5),PM_(10),NO_(2),and SO_(2) pollutants show an increasing trend.The relative humidity and temperature difference continue to rise,and the wind speed decreases accordingly.Low rainfall,low wind speed,high temperature,and high relative humidity are important reasons for haze pollution.