ESTIMATION OF HEAT ISLAND POTENTIAL BASED ON LAND-USE TYPE IN DAEGU

  • Ahn Ji-Suk (Dept. of Environmental Conservation, Faculty of Environmental Sciences, Keimyung University) ;
  • Kim Hae-Dong (Dept. of Environmental Conservation, Faculty of Environmental Sciences, Keimyung University) ;
  • Kim Sang-Woo (Dept. of Environmental Conservation, Faculty of Environmental Sciences, Keimyung University)
  • 발행 : 2005.10.01

초록

This study aims to estimate a heat island potential distribution based on the land-use types using LANDSAT/TM(1100LST April 2000) and AWS data in Daegu. The heat island potential is defined as a difference between surface temperature and air-temperature at each place. The study area was selected as about $900k km^2$ square including Daegu metropolitan area. Land-use data obtained by dividing all of Daegu metropolitan area into l-km-square three types of maps were prepared, in the 1 960s, 1970s and 2000s respectively. The types of land-use were divided into 5. Forest and farm lands have been reduced at a wide range during 40 years, most of which changed to urban area. The heat island potential distribution presented a striking contrasts according to land-use types. For example, the heat island potential of urban area was higher than $14^{\circ}$ in comparison to those of water or paddy rice areas.

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