Numerical Studies of Effects of Aerosols on Urban Fog
气溶胶粒子对城市雾影响的模拟研究

The scatter and absorption of long wave radiation of aerosols and its own radiation are added to the 3D fog model to study the effect of urban aerosols on the development and evolution of urban fog. Using the topography and relative data of Chongqing city, the roles of aerosols in the devel-opment and evolution of Chongqing fog are discussed. The results show that the existence of aerosols, because of its temperature effect, may hinder the development of surface fog, reduce the water content of low level universally, lift the fog top, and after doubling the density of aerosols, it may hinder the emergence and development of fog.