Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Physical, Chemical and Optical Properties of an Asian Dust and Haze Episodes Observed at Seoul in 2010

2010년 서울에서 관측한 황사와 연무사례의 물리, 화학, 광학적 특성비교

  • Song, Seungjoo (Asian Dust Research Laboratory, National Institute of Meteorological Research) ;
  • Kim, Jeong Eun (Asian Dust Research Laboratory, National Institute of Meteorological Research) ;
  • Lim, Eunha (Asian Dust Research Laboratory, National Institute of Meteorological Research) ;
  • Cha, Joo-Wan (Asian Dust Research Laboratory, National Institute of Meteorological Research) ;
  • Kim, Jhoon (Department of Atmospheric Sciences, Yonsei University)
  • 송승주 (국립기상과학원 황사연구과) ;
  • 김정은 (국립기상과학원 황사연구과) ;
  • 임은하 (국립기상과학원 황사연구과) ;
  • 차주완 (국립기상과학원 황사연구과) ;
  • 김준 (연세대학교 대기과학과)
  • Received : 2015.01.21
  • Accepted : 2015.04.06
  • Published : 2015.04.30
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Abstract

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. $PM_{10}$ 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 ($1.8{\sim}10{\mu}m$) was $5.4{\mu}g/m^3$ which was 7 times higher than that of clean episode. The calcium was presented as a form of $CaCO_3$ in a coarse mode. During the two haze episodes, fine particle (< $1.8{\mu}m$) concentration was increased and secondary inorganic pollutants such as sulfate, ammonium and nitrate composed of 90% of the total ions. $(NH_4)_2SO_4$ and $NH_4NO_3$ 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.

Keywords

References

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