한국대기환경학회지 (Journal of Korean Society for Atmospheric Environment)

  • 제17권5호
  • /
  • Pages.385-393
  • /
  • 2001
  • /
  • 1598-7132(pISSN)
  • /
  • 2383-5346(eISSN)
한국대기환경학회 (Korean Society for Atmospheric Environment)
권호 표지

라이다 시스템을 이용한 하층 대류권 오존농도 측정

Ozone Monitoring in the Lower Tropospheric Atmosphere by LIDAR System

  • 최성철 (고려대학교 화학과) ;
  • 차형기 (한국원자력연구소 양자광학기술개발팀) ;
  • 김덕현 (한국원자력연구소 양자광학기술개발팀) ;
  • 김영상 (고려대학교 화학과)
  • 발행 : 2001.10.01
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초록

We have developed a Differential Absortion LIDAR (DIAL) method for the measurement of lower tropospheric ozone concentration. We used two laser beams from quadrupled Nd:YAG (266 nm) for the resonance wavelength and dye lasers (299.5 nm) for non -resonance wavelength. Aerosol extinction coefficients in the lower troposphere was computed by both Klett and Slope methods. To correct the SIN (Signal -Induced Noise) effect caused by photo detector, we subtracted a new-fitted baseline on the background part of a LIDAR signal, after the subtraction of the DC level. This is because SIN can be treated as an exponentially decaying tail. Using theme results, ozone profiles were obtained approximately 2km at daytime and 3km at nighttime. We compared the results derided by the Slope method with those measured by UV spectrometer. The computed results are in mostly good agreement with experimental results. In the measurement of the vertical layer, we observed the variation of the ozone profiles around the top mixed layer.

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참고문헌

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