To predict diffusion and movement of air pollutants in coastal urban region a numerical simulation shoud be consider atmospheric flow field with land-sea breeze, mountain-valley wind and urban effects. In this study we used Lagrangian particle dispersion method in the atmospheric flow field of Pusan coastal region to depict diffusion and movement of the pollutants emited from particular sources and employed two grid system, one for large scale calculating region with the coarse mesh grid (CMG) and the other for the small region with the fine mesh grid (FMG). It was found that the dispersion pattern of the pollutants followed local circulation system in coastal urban area and while air pollutants exhausted from Sasang moved into Baekyang and Jang moutain, air pollutants from Janglim moved into Hwameong-dong region.

• 이화운(부산대학교 대기과학과) | Hwa-Woon Lee (Dept. of Atmospheric Sciences, Pusan National University)
• 김유근(부산대학교 대기과학과) | Yoo-Keun Kim (Dept. of Atmospheric Sciences, Pusan National University)
• 원경미(부산대학교 대기과학과) | Gyeong-Mee Won (Dept. of Atmospheric Sciences, Pusan National University)
• 오은주(부산대학교 대기과학과) | Eun-Joo Oh (Dept. of Atmospheric Sciences, Pusan National University)