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KMID : 1024520120210020203
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Journal of the Environmental Sciences
2012 Volume.21 No. 2 p.203 ~ p.215
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Characteristics of Mesoscale Circulation with the Detailed Building Distribution in Busan Metropolitan Area
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Son Jeong-Ock
Lee Hwa-Woon
Lee Soon-Hwan
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Abstract
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In order to clarify the impacts of thermal difference in atmospheric boundary layer due to the different sophistication of building information in Busan metropolitan areas, several numerical simulations were carried out. ACM (Albedo Calculation Model) and WRF (Weather Research and Forecasting) was applied for estimating albedo and meteorological elements in urban area, respectively. In comparison with coarse aggregated and small buildings, diurnal variation of albedo is highly frequent and its total value tend to be smaller in densely aggregated and tall buildings. Estimated TKE and sensible heat flux with sophisticatedly urban building parameterization is more resonable and valid values are mainly induced by urban building sophistication. The simulation results suggest that decreased albedo and increased roughness due to skyscraper plays an important role in the result of thermal change in atmospheric boundary layer.
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KEYWORD
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Albedo, Building height, Turbulence kinetic energy, Land use, Roughness
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