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김만해(Man-Hae Kim),여희동(Huidong Yeo),Nobuo Sugimoto,임한철(Han-Cheol Lim),이철규(Chul-Kyu Lee),허복행(Bok-Haeng Heo),유영석(Yung-Suk Yu),손병주(Byung-Ju Sohn),윤순창(Soon-Chang Yoon),김상우(Sang-Woo Kim) 한국기상학회 2015 대기 Vol.25 No.1
Vertical distribution of particle mass concentrations was estimated from 8-year elastic-backscatter lidar and sky radiometer data, and from ground-level PM10 concentrations measured in Seoul. Lidar ratio and mass extinction efficiency were determined from aerosol optical depth (AOD) and ground-level PM10 concentrations, which were used as constraints to estimate particle mass concentration. The mean lidar ratio (with standard deviation) and mass extinction efficiency for the entire 8-year study period were 60.44 ± 23.17 sr and 3.69 ± 3.00 ㎡ g<SUP>?1</SUP>, respectively. The lidar ratio did not vary significantly with the Angstrom exponent (less than ± 10%); however, the mass extinction efficiency decreases to 1.82 ± 1.67 ㎡ g<SUP>?1</SUP> (51% less than the mean value) when the Angstrom exponent is less than 0.5. This result implies that the particle mass concentration from lidar measurements can be underestimated for dust events. Seasonal variation of the particle mass concentration estimated from lidar measurements for the boundary layer, was quite different from ground-level PM10 measurements. This can be attributable to an inhomogeneous vertical distribution of aerosol in the boundary layer.