Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Analysis of the Relationship Between Land Cover and Land Surface Temperature at Cheongju Region Using Landsat Images in Summer Day

LANDSAT영상을 이용한 여름철 청주지역의 토지피복과 지표면온도와의 관계 분석

  • 박종화 (충북대학교 농업생명과학대학 지역건설공학과) ;
  • 김진수 (충북대학교 농업생명과학대학 지역건설공학과) ;
  • 나상일 (충북대학교 대학원 지역건설공학과)
  • Published : 2006.09.30
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Abstract

The objective of this research was to find an indirect method to estimate land surface temperature (LST) efficiently, using Landsat images. Agricultural fields including paddy fields have long been known to have multi-functions beneficial to the environment and ecology of the urban surrounding areas. Among these functions, the ambient temperature cooling (ATC) effect is widely acknowledged. However, quantitative and regional assessment of such effect has not been performed. Thermal remote sensing has been used over urban areas to assess the ATC effect, Thermal Island Effect(TIE), and as input for models of urban surface atmosphere exchange. Here, we review the use of thermal remote sensing in the study of paddy fields and urban climates, focusing primarily on the ATC effect. Landsat satellite images were used to determine the surface temperatures of different land cover types of a $44km^{2}$ study area in Cheongiu, Korea. The results show that the ATC is a function of paddy area percentage in Landsat pixels. Landsat pixels with higher paddy area percentage have much more cooling effect. The use of satellite data may contribute to a globally consistent method for analysis of ATC effect.

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References

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