Meso-scale Meteorology of High Levels of Air Pollution

Abstract

NO₂ concentration in urban areas is still rather high and the pattern is like plateau for more than the last decade. Also, concentration of SPM does not satisfy the environmental standard at many monitoring stations. Control of these air pollution is, therefore, a big problem and diffusion model to support the regulation is required. The model should reflect real environmental circumstances, so that it is necessary to know how and when those concentrations increase. In this paper, relation between meso-scale meteorology and high levelsof air pollution, such as NO_x, NO₂ and SPM in early winter is reviewed.