Atmospheric Dispersion Model System In The Mountainous Area Of ​​small And Medium Urban Air Quality Forecasting

Precise prediction and simulation of air pollutants emission and diffusion in urban area are very important for air pollution control, comprehensive environmental management, scientific decision making and assessment of urban environmental quality. In this paper, urban area of Gejiu city in Yunnan province was taken as an example to research and analyze influences and relationship between fluctuation of air pollutants concentration and weather factors, with the field monitoring data of Baohua temple site, children center site and Jian'an warehouse site in Gejiu city, and weather data from Weather Bureau of Yunnan province. ADMS-EIA system with strong calculating and graphing capacity and many user interfaces was used to choose optimum prediction model of air pollutants concentration for urban area of Gejiu city. There were following three sections in this paper. Firstly, it was a introduction about significance, current domestic and international research of prediction of air pollutants concentration. And also, there was an initial discussion about application of modeling through ADMS system. Secondly, it was research and analysis about current air quality, space-time distribution characteristics of air pollutants and developing trend according to monitoring data of air environmental quality between 1998 and 2003 of Gejiu city. Finally, with the research of meteorology and air pollutants emission, a model of Gejiu city was established for diffusion prediction of multi air pollutants multi-source through ADMS system according to social, economic and natural conditions of Gejiu city. There was comparison and analysis between the field monitoring data of three monitoring sites in November, 2005 and modeling data. And also, visual expression of air pollutants diffusion was realized through the established simulation information system for air pollution diffusion.