Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Visibility Estimated from the Multi-wavelength Sunphotometer during the Winter 2011 Intensive Observation Period at Seoul, Korea

2011년 겨울철 서울시 대기 집중 관측 기간 동안 다파장 복사계로 분석된 에어러솔 연직분포와 시정 거리

  • Lee, Kwon-Ho (Department of Geoinformatics Engineering, Kyungil University) ;
  • Kim, Kyung-Won (Department of Environment & Energy Science, Gyeongju University) ;
  • Kim, Gwanchul (School of Environmental Science & Engineering, Gwangju Institute of Science & Technology) ;
  • Jung, Kweon (Atmospheric Environment Team, Research Institute of Public Health & Environment) ;
  • Lee, Soon-Hee (Atmospheric Environment Team, Research Institute of Public Health & Environment)
  • 이권호 (경일대학교 공간정보공학과) ;
  • 김경원 (경주대학교 환경에너지학과) ;
  • 김관철 (광주과학기술원 환경공학부) ;
  • 정권 (서울시 보건환경연구원 대기환경팀) ;
  • 이순희 (서울시 보건환경연구원 대기환경팀)
  • Received : 2013.06.07
  • Accepted : 2013.08.16
  • Published : 2013.10.31
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Abstract

The aerosol extinction vertical profile and surface visibility have been derived from the Microtops-II sunphotometer observation during the winter 2011 intensive observation period (IOP) at Seoul, Korea. Using models of degradation of aerosol optical thickness (AOT) and aerosol scale height, we have performed extinction-visibility modulation to determine the height dependent aerosol extinction and visibility. It is shown that the aerosol loading is relatively low during IOP (mean $AOT_{550}=0.22{\pm}0.08$, ${\AA}$ngstr$\ddot{o}$m exponent=$1.14{\pm}0.26$). Modeled extinction by use of Microtops II sunphotometer data shows good agreement with measurements by the Multi-wavelenth Polarization Lidar (MPoLAR), and the derived surface visibility are consistent with data from the transmissometer. These results emphasize the use of a vertically resolved extinction from AOT to predict visibility conditions at ground level.

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