Korean Journal of Remote Sensing (대한원격탐사학회지)

Korean Society of Remote Sensing (대한원격탐사학회)
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Assessment of Solar Insolation from COMS: Sulma and Cheongmi Watersheds

천리안 위성의 일사량 검증: 설마천, 청미천

  • Baek, Jongjin (Department of Civil engineering, Hanyang University) ;
  • Byun, Kyunhyun (Department of Civil engineering, Hanyang University) ;
  • Kim, Dongkyun (Department of Civil engineering, Hongik University) ;
  • Choi, Minha (Department of Civil engineering, Hanyang University)
  • 백종진 (한양대학교 건설환경공학과) ;
  • 변규현 (한양대학교 건설환경공학과) ;
  • 김동균 (홍익대학교 건설도시공학부) ;
  • 최민하 (한양대학교 건설환경공학과)
  • Received : 2012.11.23
  • Accepted : 2013.02.17
  • Published : 2013.02.28
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Abstract

Solar insolation is essential to understand the interaction between the earth and solar system, and it is a significant parameter that is utilized in various research fields including earth science, agriculture, and energy engineering. Although solar insolation is broadly measured in the ground-based observation station, it is difficult to identify the spatial distribution of solar insolation accurately. The remote sensing approach is known to have several benefits because it can provide continuous data sets for large area. In this study, we conducted the validation of solar insolation from COMS in the South Korea by comparing with flux tower observation. The results showed that the correlations between COMS and observation were high in both 30 minutes interval data and daily average data. Thus, we can identify that COMS can provide a reasonable estimate of solar insolation.

표면도달일사량은 태양과 지구에너지시스템을 이해하는데 중요하며, 대기-지표면의 흐름, 농업 생산량, 태양발전에 필요한 에너지 연구 등과 같은 많은 분야에 활용되고 있는 중요한 변수이다. 대부분의 태양에너지는 지상관측지점에서 관측하는 경우가 많이 있지만, 공간적인 분포를 판단하기에는 한계성을 지니고 있다. 이에 반해 인공위성을 활용한 원격탐사 기법은 지속적인 자료 제공과 더불어 광역범위의 공간적 분포를 파악하는 장점이 있다. 본 연구에서는 COMS 위성자료 중 표면도달일사량 (Solar Insolation, INS)의 정확성 판단하기 위해 플럭스 타워에서 측정된 지점 자료와의 비교, 검증을 실시하였다. 결론적으로 볼 때, 30분 간격의 자료와 일평균의 자료에서 높은 상관계수를 보임에 따라 천리안 위성자료의 한반도 적용가능성이 높다고 판단된다.

Keywords

References

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