Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Measurement and Analysis of Visibility and the Characteristics of Particles during the Fall, 1993 in Seoul

서울시의 1993년 가을철 시정 및 입자 특성 측정 및 분석

  • 백남준 (한국과학기술연구원 환경연구센터) ;
  • 김태오 (한국과학기술연구원 환경연구센터) ;
  • 김성주 (한국과학기술연구원 환경연구센터) ;
  • 김용표 (한국과학기술연구원 환경연구센터) ;
  • 문길주 (한국과학기술연구원 환경연구센터)
  • Published : 1994.03.01
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Abstract

Continuous measurements of the extinction coefficient( $b_{ext}$ ) and scattering coefficient due to Particle( $b_{sp}$ ) were made during the fall 1993 in Seoul along with the measurements of the size distribution, ionic composition of particles. On the average, $b_{sp}$ values are 55% and 79% of $b_{ext}$ values during the clear and smoggy Periods respectively. Also the average values of $b_{ext}$ and $b_{sp}$ were 0.791$\times$10$^{-3}$ $m^{-1}$ (visual range 4.9km) and 0.628$\times$10$^{-3}$ $m^{-1}$ (visual range 6.2km) during the smoggy Period, and 0.297$\times$10$^{-3}$ $m^{-1}$ (visual range 13.1km) and 0.164$\times$10$^{-3}$ $m^{-1}$ (visual range 23.8km) during the clear period, respectively. The Peak at about 1${\mu}{\textrm}{m}$ of the Particle size distribution during the smoggy period is about four times higher than that during the clear period while the peaks at about 5${\mu}{\textrm}{m}$ during both periods are similar. Also, the concentrations of sulfate and nitrate at about 1${\mu}{\textrm}{m}$ during the smoggy Period are much higher than these during the clear Period.eriod.

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References

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