팔당호 유역에 대한 질소와 황의 건식 침적량 추정

Abstract

Lake Paldang is a main resource of drinking water for 20 million people in the greater Seoul area. Dry depositionamounts of nitrogen and sulfur were estimated for three typical days in each season over the watershed of LakePaldang. Models-predict air quality and meteorology, respectively. Aerosols as well as gaseous pollutants were considered. Nitrogenwas mainly deposited in the form of HNO3 while most of sulfur was deposited in the form of SO2. Contribution ofsecondary pollutants was the largest in fall since they were transported from the greater Seoul area. However,contribution of secondarily-formed particulate pollutants to the nitrogen deposition was the largest in winterbecause semi-volatile ammonium nitrate favors lower temperature. Annual deposition amounts of nitrogen andsulfur were 37% and 26% of their emission amounts, respectively, over the watershed of Lake Paldang. Highervalue of the nitrogen deposition showed a more inence of pollutants emitted in the greater Seoul area.