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Korean Meteorological Society (한국기상학회)
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Comparison of Aerosol Optical Properties from Different Models of Skyradiometer

스카이라디오미터 모델에 따른 에어러솔의 광학적 특성 비교

  • Choi, Yongjoo (Department of Environmental Science, Hankuk University of Foreign Studies) ;
  • Ghim, Young Sung (Department of Environmental Science, Hankuk University of Foreign Studies) ;
  • Sohn, Byung-Ju (School of Earth and Environmental Sciences, Seoul National University)
  • 최용주 (한국외국어대학교 환경학과) ;
  • 김영성 (한국외국어대학교 환경학과) ;
  • 손병주 (서울대학교 지구환경과학부)
  • Received : 2011.05.27
  • Accepted : 2011.08.17
  • Published : 2011.09.30
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Abstract

Aerosol optical properties from the radiation measurements by SKYNET PREDE skyradiometers, POM-01 and POM-02 were compared during the inter-calibration campaign at Seoul in February 2009. The monochromatic solar flux at the top of the atmosphere ($F_0$) gave a relative standard deviation (RSD) of 9-10% for both instruments. This comparatively high value of RSD was probably because $F_0$ was determined at short time intervals, in the morning and afternoon, using the measurements made in the polluted environment of Seoul. Although POM-02 was more effective in tracking the solar radiation, aerosol optical depths (AODs) from the two instruments were very similar after the cloud screening procedure. The squared correlation coefficients ($R^2$) of single scattering albedo (SSA) and real and imaginary refractive indices between the two instruments was around 0.5 but increased to 0.7-0.8 when only using AOD greater than 0.4. Nevertheless, mean values of the Angstrom exponent, SSA, and the imaginary refractive index of POM-02 were higher than those of POM-01.

Keywords

References

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