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남한 지역에서 여름철 맑은 날의 대기 오염물 확산에 대한 수치적 연구 KCI 등재

A Numerical Study of Atmospheric Pollutant Dispersionon over the Southn Korea on Sunny Summer Days

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한국환경과학회지 (Journal of Environmental Science International)
한국환경과학회 (The Korean Environmental Sciences Society)
초록

A Lagrangian dispersion model has been developed to study the transport of atmospheric pollutants over the southern Korean peninsula on sunny summer days. A mesoscale atmospheric model has been employed to provide the wind fields and information for turbulent diffusion for the calculation of trajectories using a conditioned particle technique. The model has been applied to the simulation of trajectories transport of atmospheric pollutants emitted from five sources in the coastal locations under various synoptic scale winds.
Under calm synoptic scale condition, the particles emitted during daytime are mixed vertically and transported toward inland by sea-breeze, according to the model simulation. The particles are then transported upward at the sea-breeze front or by the upward motion over the mountain, and some particles show tendency of returning toward the coast by the return flow of the sea-breeze circulation. The particles are found to remain over the peninsula throughout the integration period under calm synoptic scale condition. When there is westerly synoptic scale wind, the particles emitted in the west coast can reach the east coast within a day or faster depending on the speed. With a synoptic scale southerly wind of 5 m/s, most of the particles from the five sources are advected toward inland during daytime. During nighttime, significant portion of particles released in the west coast remains over the land, while most particles released in the east coast move toward the sea to the east of the middle peninsula.

저자
  • 이태영(연세대학교 천문대기과학과) | Tae-Young LEE
  • 김승범(연세대학교 천문대기과학과) | Seung-Bum KIM