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KMID : 1024520050140030297
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Journal of the Environmental Sciences
2005 Volume.14 No. 3 p.297 ~ p.309
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Numerical Simulation of Dispersion Fields of SO₂ according to Atmospheric Flow Field to Reflect local characteristics in Complex Coastal Regions
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Lee Hwa-Woon
Won Hye-Young
Choi Hyun-Jung
Lee Kang-Yoel
Kim Hyun-Goo
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Abstract
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Recently air quality modeling studies for industrial complex and large cities located in the coastal regions have been carried out Especially, the representation of atmospheric flow fields within a model domain is very important, because an adequate air quality simulation requires an accurate portrayal of the realistic threedimensional wind fields. Therefore this study investigated effect of using high resolution terrain height data and FDDA with observational data to reflect local characteristics in numerical simulation. So the experiments were designed according to FDDA and the detail terrain height with 3sec resolution or not Case 30s was the experiment using the terrain height data of USGS without FDDA and Case 3s was the experiment using the detail terrain height data of Ministry of Environment without FDDA and Case 3sF was experiment using the detail terrain height data of Ministry of Environment with FDDA. The results of experiments were more remarkable, In Case 3s and Case 3sF, temperature indicated similar tendency comparing to observational data predicting maximum temperature during the daytime and wind speed made weakly for difference of terrain height Also Case 3sF had more adequate tendency than Case 3s at dawn.
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KEYWORD
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MM5/CALPUFF, High resolution terrain height data, FDDA, Complex coastal regions
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