Comparison of Land Surface Temperatures Derived from Surface Emissivity with Urban Heat Island Effect

지표 방사율에 의한 지표온도와 도시열섬효과 비교

  • 정종철 (남서울대학교 지리정보공학과)
  • Received : 2009.05.17
  • Accepted : 2009.08.18
  • Published : 2009.08.31

Abstract

Because of urban development and changed land cover types, It is very important to acquire pixel unit of land surface temperature(LST) information when the heat island effect(HIE) of regional area are investigated. The brightness temperature observed by satellite is very useful for assessing the pixel unit of LST distributions for the analysis of thermal environment problems of urban areas. Also, satellite land cover data are very useful to our understanding of surface conditions of study areas. In this study, brightness temperature information of Landsat TM thermal channel was analyzed and compared with land cover information of Jeon-ju city. The atmospheric correction of TM thermal channel carried out to explain for compared LST long term monitoring errors. However, simple estimation and evaluation methods to find a physical relationship between LST from satellite images and in-situ data are compared with reference channel emissivity.

Acknowledgement

Supported by : 남서울대학교

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