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The Variation of UV Radiation by Cloud Scattering at King Sejong Station in West Antarctica

남극 세종기지에서의 구름 산란에 의한 자외선 변화

  • Lee, Kyu-Tae (Department of Atmospheric and Environmental Sciences, Kangnung National University) ;
  • Lee, Bang-Yong (Korea Polar Research Institute, KORDI) ;
  • Won, Young-In (Korea Polar Research Institute, KORDI) ;
  • Kim, Youn-Joung (Department of Atmospheric and Environmental Sciences, Kangnung National University) ;
  • Lee, Won-Hak (Department of Atmospheric and Environmental Sciences, Kangnung National University) ;
  • Jee, Joon-Bum (Department of Atmospheric and Environmental Sciences, Kangnung National University)
  • 이규태 (강릉대학교 대기환경과학과) ;
  • 이방용 (한국해양연구원 극지연구소) ;
  • 원영인 (한국해양연구원 극지연구소) ;
  • 김윤정 (강릉대학교 대기환경과학과) ;
  • 이원학 (강릉대학교 대기환경과학과) ;
  • 지준범 (강릉대학교 대기환경과학과)
  • Published : 2004.06.30

Abstract

For the purpose of understanding the cloud scattering effect of UV radiation at King Sejong station In West Antarctica, we analyzed the data measured by UV-Biometer at surface and compared its result with solar radiation model. The parameterization of UV radiation by cloud ice crystal was applied to solar radiation model and the sensitivity of this model for the variation of ice crystal was tested. The cloud optical thickness was calculated by using this solar radiation model. It was compared the result from calculation with CERES satellite data. In solar radiation model, the UV radiation was less scattered with increase of ice crystal size in cloud and this scattering effect was more important to UV-A radiation than Erythemal UV-B radiation. But scattering effects by altitude of cloud was not serious. The calculated cloud optical thicknesses in Erythemal UV-B and UV-A region were compared with CERES satellite data and the result by UV-A was more accurate than Erythemal UV-B region.

Keywords

References

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