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Vertical distribution and optical properties of atmospheric aerosols above the Korean peninsula are quite impor-tant to estimate effects of aerosol on atmospheric environment and regional radiative forcing. For the st time inKorea, vertical microphysical properties of atmospheric aerosol obtained by inversion algorithm were analyzedbased on optical data of multi-wavelength Raman lidar system developed by the Advanced Environmental Moni-toring Research Center(ADEMRC), Gwangju Institute Science and Technology(GIST). Data collected on 14 June2004 at Gwangju(35.10N, 126.53E) and 27 May 2005 at Anmyeon island(36.32N, 126.19E) were used as rawoptical data for inversion algorithm. Siberian forest e smoke and local originated haze were observed above andwithin the height of PBL, respectively on 14 June 2004 according to NOAA/Hysplit backstrajectory analysis. Theinversion of lidar optical data resulted in particle effective radii around 0.31~ 0.33m, single scattering albedobetween 0.964~ 0.977 at 532nm in PBL and effective radii of 0.27m and single scattering albedo between 0.923~ 0.924 above PBL. In the case on 27 May 2005, biomass burning from east China was a main source of aerosolplume. The inversion results of the data on 27 May 2005 were found to be particle effective radii between 0.23~0.24m, single scattering albedo around 0.924~ 0.929 at 532 nm. Additionally, the inversion values were wellmatched with those of Sun/sky radiometer in measurement period.