Evaluating SEBES Model to Estimate Actual Evapotranspiration using ‎MODIS Sensor Data in Regional Scale (Case Study: Sistan Plain)‎

Obviously, in any planning for qualitative and quantitative management of water resources, ýestimating the water balance and values of the input and output components that will play an ýimportant role. Several studies in the field of evapotranspiration most complex component of ýthe water balance in the world and many models offered and developedþ.þý Remote Sensing due to ýthe superiority of meteorological methods based on measuring point and water balance is more ýin the works. In this study, performance of Surface Energy Balance (SEBS) model to estimate ýactual evapotranspiration in Sistan plain is studied. For this purpose data from Zehak ýmeteorological stations and the technology of remote sensing and MODIS sensor images used. ýSurface flux of energy balance is calculated for each image pixel and actual evapotranspiration ýwere estimated by the remaining amount of the energy balance at the level. The results were ýcompared with results of two point ground-based data consist of the hay grown on the sidelines ýof Zahak synoptic station and water level of reservoir of Chahnime1. Model showed good ýperformance for both land and water based on correlation coefficient value with 0.78 and 0.89 ýrespectively.ý