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MODIS NDVI와 Morton 증발산량의 관계를 이용한 공간증발산량 산정 기법 연구 - 충주댐유역을 대상으로 -

Estimation of Spatial Evapotranspiration using the Relationship between MODIS NDVI and Morton ET - For Chungjudam Watershed -

  • 신형진 (건국대학교 사회환경시스템공학과 대학원) ;
  • 하림 (건국대학교 사회환경시스템공학과 대학원) ;
  • 박민지 (건국대학교 사회환경시스템공학과 대학원) ;
  • 김성준 (건국대학교 사회환경시스템공학과)
  • 발행 : 2010.01.31

초록

The purpose of this study is to estimate monthly Morton evapotranspiration (ET) using normalized difference vegetation index (NDVI) from MODIS satellite images. Morton ET for land surface conditions was evaluated by using daily meteorological data, and the monthly averaged Morton ETs for each land cover were compared with the monthly NDVIs of three years (2000-2002) at Chungjudam Watershed. There was a high correlation between monthly NDVI and Morton ET for the watershed with average coefficient of determination, 0.80. By comparing the MODIS NDVI ET with SLURP Morton ET, the SLURP ET was smaller than the MODIS NDVI ET. This was estimated from the consideration of soil moisture condition for the ET occurrence in the SLURP model, the limited information from the monthly NDVI values, and the errors from the derived regression equations.

키워드

참고문헌

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