Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Application of the Latest Land Use Data for Numerical Simulation of Urban Thermal Environment in the Daegu

최신토지피복자료를 이용한 대구시의 열환경 수치모의

  • Lee, Hyun-Ju (Air Pollution Control Research Division, Climate and Air Quality Research Department, National Institute ofEnvironmental Research) ;
  • Lee, Kwi-Ok (Division of Earth Environment System, Pusan National University) ;
  • Won, Gyeong-Mee (Division of Earth Environment System, Pusan National University) ;
  • Lee, Hwa-Woon (Division of Earth Environment System, Pusan National University)
  • 이현주 (국립환경과학원 기후대기연구부 대기제어연구과) ;
  • 이귀옥 (부산대학교 지구환경시스템학부) ;
  • 원경미 (부산대학교 지구환경시스템학부) ;
  • 이화운 (부산대학교 지구환경시스템학부)
  • Published : 2009.06.30
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Abstract

The land surface precesses is very important to predict urban meteorological conditions. Thus, the latest land use data set to reflect the rapid progress in urbanization was applied to simulate urban thermal environment in Daegu. Because use of the U.S geological Survey (USGS) 25-category data, currently in the fifth-generation Pennsylvania State University-National Center for Atmospheric Research Mesoscale Model (MM5), does not accurately described the heterogeneity of urban surface, we replaced the land use data in USGS with the latest land-use data of the Korea Ministry of Environment over Daegu. The single urban category in existing 24-category U.S. Geological survey land cover classification used in MM5 was divided into 5 classes to account for heterogeneity of urban land cover. The new land cover classification (MC-LULC) improved the capability of MM5 to simulate the daytime part of the diurnal temperature cycle in the urban area. The 'MC-LULC' simulation produced the observed temperature field reasonably well, including spatial characteristics. The warm cores in western Daegu is characterized by an industrial area.

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References

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