Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
권호 표지

Modeling of Smog Characteristics in Seoul during the Fall,1993

서울시의 1993년 가을 스모그 특성모사

  • 백남준 (한국과학기술연구원 환경센터) ;
  • 이성준 (한국과학기술연구원 환경센터 겸 서울대학교 화학공학과) ;
  • 김용표 (한국과학기술연구원 환경센터) ;
  • 문길주 (한국과학기술연구원 환경센터) ;
  • 조영일 (연세대학교 공과대학 화학공학과)
  • Published : 1994.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

A visibility analysis model based on the Mie theory is applied to the measurements during the fall, 1993 in Seoul. Model estimations of the total extinction coefficient $b_{ext}$, and the particle scattering coefficient, $b_{sp}$ are in good agreement with the measured values by a transmissometer and a nephelometer, respectively. These values show strong dependency on the mass loading of fine particles( $D_{p}$ ＜3.0${\mu}{\textrm}{m}$) but show no apparent relation with that of coarse particles(3.0${\mu}{\textrm}{m}$＜ $D^{p}$ ＜10${\mu}{\textrm}{m}$). Relative humidity plays an important role in determining the size of particles which in turn, affects the optical efficiency of aerosol. Based on the composition analysis with cut size nitrate concentration is higher than the sulfate concentration in PM3-10 but they are comparable to each other in PM3. Considering in 1985, it demonstrates a drastic increase of nitrate concentration between 1985 and 1993. It is found that measured and estimated light extinction budget were in good agreement within 10% and that scattering by particles is responsible for about 50-55% and 70-80 % of total extinction during clear and smoggy periods respectively.y.

Keywords

References

  1. 한국과학기술연구원 연구보고서 서울지방의 스모그현상 연구(Ⅱ) 문길주;심상규;김용표;박철홍;백남준;김태오;이성준;이정아;박세옥;김성주
  2. 한국대기보전학회지 v.10 no.1 서울시의 1993년 가을철 시정 및 입자특성 측정 및 분석 백남준;김태오;김성주;김용표;문길주
  3. 국립환경연구원보 v.8 대기중 Aerosol 동태에 관한 연구 이민희;한의정;한진석;정해동;한자경
  4. J. Air Pollut. Control Ass. v.31 Chemical analysis of size-segregated samples of Denver's ambient particulate Countess,R.J.;S.H.Cadle;P.J.Groblicki;G.T.Wolff,G.T.
  5. Atmos. Environ. v.15 Comparison of telephotometer measurements of extinction coefficients with scattering and absorption coefficients Dzubay,T.G.;K.W.Clubb
  6. Environ. Sci. Technol. v.16 no.8 Visibility and aerosol composition in Houston, Texas Dzubay,T.G.;R.K.Stevens;C.W.Lewis;D.H.Hern;W.J.Courtney;J.W.Tesch;M.A.Mason
  7. Application of a Mie scattering computer code supporting material for a user workshop Fred,R.;H.L.Douglas;M.Stefan
  8. Atmos. Environ. v.15 Visibility-reducing species in the Denver Brown Cloud - 1. Relationship between extinction and chemical composition Groblicki,P.J.;G.T.Wolff;R.J.Countess
  9. Atmos. Environ. v.17 Apportion light extinction coefficient to chemical species in atmospheric aerosol Hasan,H.;T.G.Dzubay
  10. Air Water Poll. Int. J. v.10 Calculations of color and visibility in urban atmospheres polluted by gaseous $NO_2$ Hodkinson,J.R.
  11. J. Colloid Interface Sci. v.149 Simulation of multicomponent aerosol dynamics Kim,Y.P.;J.H.Seinfeld
  12. Beitr. Phys. frei. Atmos. v.12 no.33-53 Theorie der horizontalen Sichtweite Koschmieder,H.
  13. Environ. Sci. Technol. v.23 no.3 Characteristics of summer midday low-visibility events in the Los Angeles area Larson,S.M.;G.R.Cass
  14. Second Chemical Congress of the North American Continent, Las Vagas, NV, August 1980 Chemical species contribution to light scattering by aerosols at a remote arid site: Camparison of statistical and theoretical results, Paper pres. at the Symposium on Chemical Composition of Atmospheric Aerosols: Source/Air Quality Relationships Ouimette,J.R.;R.C.Flagan;A.R.Kelso
  15. Atmospheric chemistry and physics of air pollution Seinfeld,J.H.
  16. Atmos. Environ. v.17 no.2 Optical properties of aerosols-Comparison of measurements with model calculations Sloane,C.S.
  17. Atmos. Environ. v.18 no.4 Optical properties of aerosols of mixed composition Sloane,C.S.
  18. Atmos. Environ. v.19 no.4 Prediction of ambient light scattering using a physical model responsive to relative humidity: Validation with measurements from Detroit Sloane,C.S.;G.T.Wolff
  19. Atmos. Environ. v.20 no.5 Effect of composition on aerosol light scattering efficiencies Sloane,C.S.
  20. Atmos. Environ. v.25A no.5/6 Size-segregated fine particle measurements by chemical species and their impact on visibility impairmrnt in Denver Sloane,C.S.;J.Watson;J.Chow;L.Pritchett;L.W.Richards
  21. JAPCA v.32 The relationships between the chemical composition of fine particles and visibility in the Detroit metropolitan area Wolff,G.T.;M.A.Ferman;N.A.Kelly;D.P.Stroup;M.S.Ruthkosky