Author(s)

Y.S. Ghim & H.S. Oh

Abstract

Numerical simulation of atmospheric dispersion in a complex terrain with a shoreline in Korea Y.S. Ghim & H.S. Oh Global Environment Research Center, Korea Institute of Science and Technology, Seoul, Korea Abstract Diurnal variations of wind field and pollutant dispersion in a complex terrain with a shoreline were investigated under the insolation conditions of summer and winter. The area is located in the south of the Korean Peninsula and includes a large petrochemical industrial complex. The Regional Atmospheric Modeling System (RAMS) was used in the simulation study. Initially, horizontally homogeneous wind fields were assumed on the basis of sounding data at the nearby upper-air station for days with morning wind speeds below 2 m/s. On these days, the sea breeze prevailed in summer while the land breeze lasted for a few hours in the morning; the effect of synoptic winds was strong in winter with some inclusion of wind variations owing to the interaction between sea and land.

Keywords