TESTING APPROACH TO ESTIMATE HOURLY REFERENCE EVAPOTRANSPIRATION WITH SCINTILLOMETER MEASUREMENTS UNDER MEDITERRANEAN CLIMATE

In the paper a comparison between radiation-aerodynamic and radiation based evapotranspiration models with an independent dataset of Alfalfa reference evapotranspiration acquired by means a scintillometer is carried out. The satisfactory performance of the selected models is comparable to that showed in earlier investigations. This study also shows that using values of model parameters locally determined, is possible to improve hourly estimation of potential evapotranspiration, as obtained with the scintillometer.