The Characteristics of atmospheric flow and dispersion of air pollutants in the mountainous coastal area were studied using three-dimensional model by the combination of land/sea breezes and transport. It was then applied to Pusan city. As the urban area considered in this study is located in a mountainous coastal area, the atmospheric flow is strongly affected by the land/sea breezes and mountain/valley winds. The typical effects of land/sea breezes on the dispersion and the characteristics of pollutants movement in the region were analysed. The model has been proved to be an useful tool to pridict real time air pollutants transport as shown by the results of application studies in Pusan, Korea which is an urbanized coastal area with mountainous topography.
It was found that the pollutants are differently transported and concentrated as going inland by the influence of the sea breeze with topographic changes. By comparing the pollutants concentrations of the simulated results with those of the observational results, it is shown that simulated results in this study are in qualitative agreement with observational ones.

• 장은숙(부산대학교 대기과학과) | Eun-Suk Jang (Dept. of Atmospheric Sciences, Pusan National University)
• 이화운(부산대학교 대기과학과) | Hwa-Woon Lee (Dept. of Atmospheric Sciences, Pusan National University)