Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Numerical Simulation for Recirculation of Air Mass in the Coastal Region Using Lagrangian Particle Dispersion Model

라그랑지안 입자확산모델을 이용한 광양만 권역에서의 공기괴 재순환현상 수치모의

  • Lee, Hwa-Woon (Division of Earth Environmental System, Pusan National University) ;
  • Lee, Hyun-Mi (Division of Earth Environmental System, Pusan National University) ;
  • Lee, Soon-Hwan (Institute of Environmental Studies, Pusan National University) ;
  • Choi, Hyun-Jung (Division of Earth Environmental System, Pusan National University)
  • 이화운 (부산대학교 지구환경시스템학부) ;
  • 이현미 (부산대학교 지구환경시스템학부) ;
  • 이순환 (부산대학교 환경문제연구소) ;
  • 최현정 (부산대학교 지구환경시스템학부)
  • Received : 2009.09.24
  • Accepted : 2009.12.30
  • Published : 2010.02.28
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Abstract

Air mass recirculation is a common characteristic in the coastal area as a result of the land-sea breeze circulation. This study simulates the recirculation of air mass over the Gwangyang Bay using WRF-FLEXPART and offers a basic information about the effective domain size that can reflect recirculation. For this purpose, WRF is set up four nested domains and three cases are selected. Subsequently FLEXPART is operated on the basis of WRF output. During the clear summer days with weak wind speed, particles that emitted from Yeosu national industrial complex and Gwangyang iron works flow into emission sources because of the land-sea breeze. When land-sea breeze is strengthen, the recirculation phenomena appears clearly. However particles aren't recirculated under weak synoptic condition. Also plume trajectory is analyzed and as a consequence, the smallest domain area have to be multiplied by 1.3 to understand recirculated dispersion pattern of particles.

Keywords

References

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