i have estimated de actual evapotranspiration and i have done a graph of evapotranspiration per month, in this graph i have a sudden decrease with out explanation. somebody help me for find the reason.
Evapotranspiration is a residual product of all most all hydrological models. The type of climate of the study region influences the PET to a greater extent. You have to choose the appropriate method for ET estimation. if your area lies in a humid region you may opt for Pristley-Taylor method. Further, if all the meteorological inputs are available, better to adopt Pennman-Monteith method.