| Year of Publication | 2015 | Division | AI Weather Forecast Research Team |
|---|---|---|---|
| Title | Physical, Chemical and Optical Properties of an Asian Dust and Haze Episodes Observed at Seoul in 2010 | ||
| Author | Song, Seung joo | ||
| Coauthor | 김정은, 임은하, 차주완, 김준 | ||
| ISBN(ISSN) | Name of Journal | 대기환경학회 | |
| Category (International/Domestic) | 국내 | Vol. No. | 31(2) |
| Research Project Title | 예보기술 지원 및 활용연구 (2015년) | Publication Date | 2015-04-06 |
| Keywords | Dust, Haze, Aerosol type, Fine particle, Coarse particle | ||
This study investigated physicochemical and optical characteristics for three episodes of Asian dust, stagnant haze and long-range transport haze and for one clean day. PM10 mass concentration during Asian dust and two haze days was increased by 2~9 times compared to that of clean episode.
During Asian dust episode, coarse particle concentration was increased and the mass concentration of calcium in a coarse mode (1.8~10 μm) was 5.4 μg/m³ which was 7 times higher than that of clean episode. The calcium was presented as a form of CaCO₃ in a coarse mode. During the two haze episodes, fine particle (〈1.8 μm) concentration was increased and secondary inorganic pollutants such as sulfate, ammonium and nitrate composed of 90% of the total ions. (NH4)₂SO₄ and NH₄NO₃ were dominant in a fine mode for stagnant haze episode. But they were the most dominant form in both fine mode and coarse mode for long-range transport haze episode. According to the optical properties for each episode (Asian dust, stagnant haze and long-range transport haze) were classified as dust, black carbon and mixture, respectively.
During Asian dust episode, coarse particle concentration was increased and the mass concentration of calcium in a coarse mode (1.8~10 μm) was 5.4 μg/m³ which was 7 times higher than that of clean episode. The calcium was presented as a form of CaCO₃ in a coarse mode. During the two haze episodes, fine particle (〈1.8 μm) concentration was increased and secondary inorganic pollutants such as sulfate, ammonium and nitrate composed of 90% of the total ions. (NH4)₂SO₄ and NH₄NO₃ were dominant in a fine mode for stagnant haze episode. But they were the most dominant form in both fine mode and coarse mode for long-range transport haze episode. According to the optical properties for each episode (Asian dust, stagnant haze and long-range transport haze) were classified as dust, black carbon and mixture, respectively.
