공기 궤 유입경로에 따른 한반도 서울 상공의 전체 및 유기 에어로졸 농도 변화 분석
Dependence of Total and Carbonaceous Aerosol Concentrations on Transport Pathways in Seoul, Korea
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초록
Recently increased anthropogenic aerosols change the radiative energy balance andaffect human life. The management of air quality requires monitoring both the local emissionsand transported pollutants. In order to estimate the quantitative contribution of long-rangetransport from remote sources on aerosol concentrations in Seoul, the airmasses were classifiedinto five types with respect to their pathways. When airmass came from west over strongemission regions in China, high concentrations of PM10, PM2.5, black carbon (BC), organic carbon(OC), and elemental carbon (EC) were found, even higher than those for the stagnated airmass. High OC concentrations were found when airmass came from north while BC, EC, andPM2.5 concentrations were lower than those of the stagnated airmasses. During dust events, thePM2.5 and PM10 concentrations increased significantly while carbonaceous aerosol concentrationsdid not increased. The temporal variations of aerosol concentrations in Seoul wereaffected by the seasonal variations of airmass pathways. The high PM2.5 concentrations over100 μg m−3 appeared most frequently when the airmasses came from west.
Abstract
Recently increased anthropogenic aerosols change the radiative energy balance andaffect human life. The management of air quality requires monitoring both the local emissionsand transported pollutants. In order to estimate the quantitative contribution of long-rangetransport from remote sources on aerosol concentrations in Seoul, the airmasses were classifiedinto five types with respect to their pathways. When airmass came from west over strongemission regions in China, high concentrations of PM10, PM2.5, black carbon (BC), organic carbon(OC), and elemental carbon (EC) were found, even higher than those for the stagnated airmass. High OC concentrations were found when airmass came from north while BC, EC, andPM2.5 concentrations were lower than those of the stagnated airmasses. During dust events, thePM2.5 and PM10 concentrations increased significantly while carbonaceous aerosol concentrationsdid not increased. The temporal variations of aerosol concentrations in Seoul wereaffected by the seasonal variations of airmass pathways. The high PM2.5 concentrations over100 μg m−3 appeared most frequently when the airmasses came from west.
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