Estimation of Spatial Evapotranspiration using the Relationship between MODIS NDVI and Morton ET - For Chungjudam Watershed -
MODIS NDVI와 Morton 증발산량의 관계를 이용한 공간증발산량 산정 기법 연구 - 충주댐유역을 대상으로 -

Hyung-Jin Shin, Rim Ha, Min-Ji Park, Seong-Joon Kim
2010 Journal of The Korean Society of Agricultural Engineers  
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)(2001)(2002) at Chungjudam Watershed. There was a high correlation between monthly NDVI and Morton ET for the watershed with average
more » ... ficient 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.
doi:10.5389/ksae.2010.52.1.019 fatcat:ujwkryl5wffjrhci5d2guhggzm