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On the Seasonal Variation of Urban Heat Island Intensity According to Meteorological Condition in Daegu

대구지역의 기상조건에 따른 도시열섬강도의 계절별 변화특성

  • Ahn Ji-Suk (Department of Earth Conservation, Keimyung University) ;
  • Kim Hae-Dong (Department of Earth Conservation, Keimyung University)
  • 안지숙 (계명대학교 지구환경보전과) ;
  • 김해동 (계명대학교 지구환경보전과)
  • Published : 2006.06.01

Abstract

The purpose of this study is to clarify the characteristic of urban heat island intensity in urban area formed at a basin. Thermal environments for basin-type cities are influenced by significant topographic relief winds. In this study, we analyzed the diurnal variations of the heat island intensity according to meteorological condition and season using AWS(Automatic Weather observation System) data in Daegu Metropolitan area for 1 year(3/April, 2003 $\sim$ 2/April, 2004). In this study, we defined the urban heat island intensity as the air temperature difference between two points, the downtown and the suburban area. The suburban area is located at valley mouth around the western tip of Daegu. The results are summarized as follows; 1. The maximum heat island intensity was recorded at early morning under the meteorological conditions, calm and clear 2. The heat island intensity was strong in the order of winter, fall, spring and summer. 3. The heat island intensity came out minus values in the afternoon. This phenomenon is known as a com mon for basin-type cities. 4. The heat island intensity was twice or more in clear and calm than not so.

Keywords

References

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