Performance evaluation of Satellite-based actual evapotranspiration technique

Estimating crop evapotranspiration is vital for the calculation of irrigation water requirements. Remote sensing data have proven to be a valuable and efficient tool estimating evapotranspiration. It has been used intensively over past decade due free, high temporal spectral resolution availability. The main aim this study was estimate (ET) selected area in El-Beheira governorate, Egypt based on Simplified Surface Energy Balance Index (S-SEBI) using nine Landsat-8 images acquired from January December 2020. performance studied method compared with CROPWAT-8 model. results revealed acceptable accuracy ET estimated S-SEBI algorithms Landsat 8 according coefficient determination (r2 = 0.82) root mean square error (RMSE 0.53 mm/day). Therefore, it recommended use calculate spatial distribution provide required information determining requirements suggesting an management strategy.