Gray Level Analysis Based on Gray Numerical Model of Air Pollution in Handan City

Because of the uncertainty problem of pollutants diffusing in the atmosphere of Handan city, we monitor and put forward a new conception about air ground pollution belt, and get two-dimensional finite difference equation of air pollution. Meanwhile dispersion coefficient and wind speed are considered as grey parameters. One grey numerical quality model of air pollution is built according to grey theory and applies to the air pollution diffusing system of Handan city. Meantime analyze the important impact factors of the gray level. The results show the dispersion coefficient gray level, the wind speed gray level and the attenuation coefficient gray level can influence the concentration gray level.