Journal Paper
| Year of Publication |
2015
|
Division |
Asian Dust Research Division
|
| Title |
Physical, Chemical and Optical Properties of an Asian Dust and Haze Episodes Observed at Seoul in 2010
|
| Author |
Song, Seung joo
|
| Coauthor |
Jeong Eun Kim, Eunha Lim, Joo-Wan Cha, Jhoon Kim
|
| ISBN(ISSN) |
|
Name of Journal |
Journal of Korean Society for Atmospheric Environment
|
| Category
(International/Domestic) |
국내
|
Vol. No. |
31
|
| Research Project Title |
황사 감시․예측기술 지원 및 활용연구(Ⅲ)
|
Publication Date |
2015-04-06
|
| Keywords |
Dust Haze, A erosol 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
