The research was conducted to simulate and interpret the change of PM10 profile by Asian dust using the CALPUFF modeling system for the period April 6 through 18, 2001. The results, which are represented a daily variation of PM10 concentration before and after Asian dust, was located between a minimum concentration of 50 μg/㎥ and a maximum concentration of 100 μg/㎥. Most concentration peaks in the PM10 profile were shown within a level below 500 m and had a pattern that rapidly increased up the peak and decreased after the peak to 1000 m. Even though the shapes of the vertical profile during Asian dust days were similar to non-Asian dust days, no rapid change vertically was observed. In particular, the vertical profile on 1200 LST and 1800 LST was noticeably shifted to the higher concentrations, which means PM10 in the atmosphere was changed into a vertically and horizontally heterogeneous form under the Asian dust event. Finally, it is confirmed that the simulation result from CALPUFF might schematically sketched atmospheric PM10 profiles and their change by Asian dust throughout the comparison with profiles of aerosol extinction coefficients, which were acquired from Lidar measurement at KGAWO.

• Chang Bum Cho(Typhoon and Asian Dust Research Laboratory, National Institute of Meteorological Research) Corresponding Author
• Yoo Keun Kim(Department of Atmospheric Sciences, Pusan National University)
• Yong Seob Lee(Climate Policy Division, Korea Meteorological Administration)
• So Young Bang(Research Planing and Management Team, National institute of Meteorological Research)