Mapping evapotranspiration with vegetation index-temperature difference method using the products of the moderate resolution imaging spectroradiometer

Abstract

Evapotranspiration (ET) is a crucial variable to monitor agricultural water consumption, map irrigated agriculture and identify agricultural droughts. ET maps can be used to analyze agricultural water use practices of farmers, identify irrigated farms and drought-stricken regions. In this study, a simple model capable of producing evaporative fraction (EF) and then ET from minimal remotely sensed and meteorological inputs in a trapezoidal framework is presented. So far, the model has successfully validated against ground data collected at three different eddy-covariance (ECOR) flux towers in the US. Overall, this methodology shows promise to estimate ET from field to regional scales in regions with limited data like Turkey.