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초록· 키워드

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In order to clarify the influence of the meteorological field preparation method on the O₃ prediction, a comparative study on the different resolution scales of land-use was carried out. The prognostic meteorological fields and air quality field over complex areas of Seoul, Korea are generated by the PSU/NCAR mesoscale model (MM5) and the Third Generation Community Multiscale Air Quality Modeling System (Models - 3/CMAQ), respectively. It also examines the meteorological field effect, including land-use, on the photochemical modeling. The topography data in each case was derived from the Korea Ministry of Environment Geographic Information System Digital Elevation Model with a grid distance of 90 m. To make a comparative study of the land-use conditions, the land-use datasets with the different resolution scales were derived from the U. S. Geological Survey (ULU) with a grid distance of 1.1 ㎞ and the Korea Ministry of Environment Geographic Information System (KLU) with a grid distance of 30 m. For more accurate specification of wind behavior, KLU was combined with the building height in urban areas (KLU+B). According to the updated land-use patterns (KLU+B), the accuracy of predicted surface winds flow and temperature field were improved at expanded urban grid cells sites. In addition, sensitivity experiments of the influence of accuracy of land-use datasets on O₃ concentrations were also carried out. Hourly mean differences of O₃ concentration approximately with the difference of land-use reached 4 ppb in the complex area. The region of the more intensified horizontal wind speed and mixing height in converting to KLU+B induced to the increased (?<SUB>(KLU+ B) -ULU</SUB>) O₃ concentration.

목차

Abstract
1. Introduction
2. Meteorological Model Description
3. Photochemical Model Description
4. The Effect of Land-use on Meteorological Modeling
5. Impact of Meteorological Conditions on Photochemical Modeling
6. Conclusion
Acknowledgements
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UCI(KEPA) : I410-ECN-0101-2009-453-016239049