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Comparison of Surface Temperatures between Thermal Infrared Image and Landsat 8 Satellite

열적외 영상과 Landsat 8 위성으로부터 관측된 지표면 온도 비교

  • Cho, Chaeyoon (Department of Earth and Environmental Sciences) ;
  • Jee, Joon-Bum (Weather Information Service Engine, Hankuk University of Foreign Studies) ;
  • Park, Moon-Soo (Weather Information Service Engine, Hankuk University of Foreign Studies) ;
  • Park, Sung-Hwa (Weather Information Service Engine, Hankuk University of Foreign Studies) ;
  • Choi, Young-Jean (Weather Information Service Engine, Hankuk University of Foreign Studies)
  • 조채윤 (서울대학교 지구환경과학부) ;
  • 지준범 (한국외국어대학교 차세대도시농림융합기상사업단) ;
  • 박문수 (한국외국어대학교 차세대도시농림융합기상사업단) ;
  • 박성화 (한국외국어대학교 차세대도시농림융합기상사업단) ;
  • 최영진 (한국외국어대학교 차세대도시농림융합기상사업단)
  • Received : 2015.10.27
  • Accepted : 2016.01.04
  • Published : 2016.02.29

Abstract

In order to analyze the surface temperature in accordance with the surface material, surface temperatures between Thermal InfraRed Image (TIRI) and Landsat 8 satellite observed at the commercial area (Gwanghwamun) and residential area (Jungnang) are compared. The surface temperature from TIRI had applied atmospheric correction and compared with that from Landsat 8. The surface temperatures from Landsat 8 at Gwanghwamun and Jungnang are underestimated in comparison with that from TIRI. The difference of surface temperature between the two methods is greater in summer than in winter. When the analysis area was divided into detailed regions, depending on the material and the position of the surface, correlation of surface temperature between TIRI with Landsat 8 is as low as 0.29 (Gwanghwamun) and 0.18 (Jungnang), respectively. The results were caused from the resolution difference between the two methods. While the surface temperatures of each zone from Landsat 8 were observed almost constant, high-resolution TIRI observed relatively precise surface temperatures. When the each area was averaged as one space, correlation of surface temperature between TIRIs and Landsat 8 is more than 0.95. The spatially averaged surface temperature is higher at Jungnang, representing residential areas, than at Gwanghwamun, representing commercial areas. As a result, the observation of high resolution is required in order to observe the precise surface temperature. This is because it appears that the spatial distribution of the various surface temperature in the range of micro-scale according to the conditions of the ground surface.

Keywords

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