Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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A Study on Examples Applicable to Numerical Land Cover Map Data for Atmospheric Environment Fields in the Metropolitan Area of Seoul - Real Time Calculation of Biogenic CO2 Flux and VOC Emission Due to a Geographical Distribution of Vegetable and Analysis on Sensitivity of Air Temperature and Wind Field within MM5 -

수도권지역에서 수치 토지피복지도 작성을 통한 대기환경부문 활용사례 연구 - MM5내 기온 및 바람장의 민감도 분석과 식생분포에 기인한 VOC 배출량 및 CO2 플럭스의 실시간 산정을 중심으로 -

  • Moon, Yun-Seob (Department of Environmental Education, Korea National University of Education) ;
  • Koo, Youn-Seo (Department of Environmental Engineering, Anyang University)
  • Published : 2006.10.31
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Abstract

Products developed in this research is a software which can transfer the type of shape(.shp) into the type of ascii using the land cover data and the topography data in the metropolitan area of Seoul. In addition, it can calculate the $CO_2$ flux according to distribution of plants within the land cover data. The $CO_2$ flux is calculated by the experimental equation which is compose of the meteorological parameters such as the solar radiation and the air temperature. The net flux was shown in about $-19ton/km^2$ by removing $CO_2$ through the photosynthesis during daytime, and in 2 ton/km2 by producing it through the respiration during nighttime on 10 August 2004, the maximum day of air temperature during the period of 3yr(2001 to 2004), in the metropolitan area of Seoul. Spatial distribution of the air temperature and the wind field is simulated by substituting the middle classification of the land cover map data, upgraded by the Korean Ministry of Environment(KME), for the land-use data of the United States Geological Survey(USGS) within the Meteorological Mesoscale Model Version 5(MM5) on 10 August 2006 in the metropolitan area of Seoul. Difference of the air temperature between both data was shown in the maximum range of $-2^{\circ}C\;to\;2.9^{\circ}C$, and the air temperature due to the land use data of KME was higher than that of USGS in average $0.4^{\circ}C$. Also, those of wind vectors were meanly lower than that of USGS in daytime and nighttime. Furthermore, the hourly time series of Volatile Organic Components(VOCs) is calculated by using the Biosphere Emission and Interaction System Version 2(BEIS2) including the new land cover data and the meteorological parameters such as the air temperature and so]ar insolation. It is possible to calculate the concentration of ozone due to the biogenic emission of VOCs.

Keywords

References

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