Review of the lmpact of Air Pollution on Fog

In recent decades, air pollution has become a major environmental problem following the industrialization and urbanization in many countries and regions. Air pollutants have signifcant effect on the physical and chemical characteristics of fog in urban and surroundings. This paper reviews the main progresses on the research of relationships between fog and air pollution, including fog-water chemical compositions and their sources, the formation mechanism of chemical composition, the factors infuencing fog formation and change. Results show that： the structure and usage ways of energy sources and air pollution control level are the main reasons for chemical composition of fog in the urban and surroundings. The urbanization, climate change and air pollution are the three main factors that affect the formation and the long-term change of fog. Via altering macro and micro meteorological and environmental conditions of fog, the further studies might focus on the physical and chemical mechanism inducing long term variation of fog.