Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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A study on Monitoring for CFC-12 and CFC-11 in the atmosphere near Mt. Kwan-Ak.

관악산 대기 중의 CFC-12 및 CFC-11 모니터링에 관한 연구

  • 김경렬 (서울대학교 자연과학대학 해양학과) ;
  • 민동하 (서울대학교 자연과학대학 해양학과) ;
  • 박미경 (서울대학교 자연과학대학 해양학과) ;
  • 김은희 (서울대학교 자연과학대학 해양학과) ;
  • 최상화 (서울대학교 자연과학대학 해양학과) ;
  • 조하만 (기상연구소) ;
  • 남재철 (기상연구소)
  • Published : 1994.03.01
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Abstract

A monitoring system for atmospheric CFC-12 and CFC-11 has been established at Mt. Kwan-Ak, Seoul National University (SNU) since July, 1991. The concentrations showed quite a large variation ranging from 495 to 37600 pptv (pptv=part per trillion, 10$^{-12}$ , v/v) for CFC-12 and from 233 to 12100 pptv for CFC-11 due to many local sources. However, monthly medians show rather limited ranges ; 553~765 pptv for CFC-12 and 301~431 pptv for CFC-11. Furthermore minimum concentrations could be defined relatively well during the whole period of observation. The regional background concentrations in 1993 near SNU wer estimated as 533 pptv for CFC-12 and 293 pptv for CFC-11. These values are very comparable to global averages in Northern Hemisphere, 523 pptv for CFC-12 and 287 pptv for CFC-11, reflecting the fast atmospheric mixing processes within the hemisphere. Examinations with meteorological parameters such as wind speed and direction suggest the possible measurement-window at SNU, appropriate for regional monitoring. Studies for improving the monitoring capability of the SNU station such as automation of the analysis system along with correlation with other meteorological parameters, are in progress at the present time.

Keywords

References

  1. 석사학위논문, 서울대학교 관악산 대기 중의 CFC에 관한 연구 김은희
  2. Science v.251 Free Radicals within the Antarctic Vortex: The Role of CFCs in Antarctic Ozone Loss Anderson,J.G.;D.W.Toohey;W.H.Brune
  3. C & E News v.60 no.40 Chemistry in the troposphere Chameides,W.;D.D.Davis
  4. J. Geophys. Res. v.91 Atmospheric Lifetime and Annual Release Estimates for CFCI₃ and CF₂CI₂from 5 year of ALE Data Cunnold,D.M.;R.G.Prinn;R.A.Rasmussen;P.G.Simmonds;F.N.Alyea;C.A.Cardelino;A.J.Crawford;P.J.Fraser;R.D.Rosen
  5. J. Geophys. Res. v.99 Global trends and annual releases of CCI₃F and CCI₂F₂ estimated from ALE/GAGE and other measurements from July 1978 to June 1991 Cunnold,D.M.;P.J.Fraser;R.F.Weiss;R.G.Prinn;P.G.Simmonds;B.R.Miller;F.N.Alyea;A.J.Crawford
  6. Nature v.315 Large losses of total ozone in Antarctica reveal seasonal CIOx/Nox interaction Farman,J.C.;B.G.Gardiner;J.D.Shanklin
  7. Anal. Chem. v.51 Drier for field use in the determination of trace atmospheric gases Foulger,B.E.;P.G.Simmonds
  8. Phys. Today Polar Stratospheric Clouds and The Ozone Hole Hamill,P.;O.B.Toon
  9. Climate change IPCC
  10. Cliamte change 1992 IPCC
  11. Nature v.249 Stratopheric sink for chlorofluoromethanes: chlorine atom-catalysed destruction of ozone Molina,M.;F.S.Rowland
  12. NOAA Air Resources Laboratory Climate Monitoring and Diagnostics Laboratory N0.18 : Summery Report 1989 NOAA/CMDL
  13. NOAA Air Resources Laboratory Geophysical Monitoring for Climate Change No. 17 : Summary Report 1988 NOAA/GMCC
  14. J. Geophys. Res. v.88 The Atmospheric Lifetime Experiment : 1. Introduction, Instrumentation, and Overview Prinn,R.G.;P.G.Simmonds;R.A.Rasmussen;R.D.Rosen;F.N.Alyea;C.A.Cardelino;A.J.Crawford;D.M.Cunnold;P.J.Fraser;J.E.Lovelock
  15. Science v.232 Atmospheric Trace Gases : Trends Distributiond Over the Last Decade Rasmussen,R.A.;M.A.K.Khalil
  16. Science v.248 A comparison of the contribution of various gases to the greenhouse effect Rodhe,H.
  17. American Scientist v.77 Chlorofluorocarbons and the depletion of stratospheric ozone Rowland,F.S.
  18. Nippon Kagaku Kaishi(in japanese), N5 Halocarbons in the atmosphere - Trends and Vertical Profiles Tominaga,T.;Y.Makide