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KMID : 1024520070160010065
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Journal of the Environmental Sciences
2007 Volume.16 No. 1 p.65 ~ p.71
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Estimation of Urban Heat Island Potential Based on Land-Use Type in Summertime of Daegu
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Ahn Ji-Suk
Kim Hae-Dong
Kim Sang-Woo
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Abstract
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This study aims to estimate a urban heat island potential distribution based on the land-use types using Landsat TM(1100 LST August 2004) 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 square including Daegu metropolitan area. Land-use data obtained by dividing all of Daegu metropolitan area in- to 1-km-square three types of maps were prepared in the 1960s, 1970s and 2000s respectively. Land-use types were classified into 5 categories. Forest and farm lands have been reduced at a wide range during 40 years. Most of those changed into 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 in comparison to those of water or paddy rice areas.
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KEYWORD
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Heat island potential, Landsat TM, Land-use
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