Estimation of evapotranspiration equations using time series analysis

In this paper, ability of Box-Jenkins models in forecasting the reference potential evapotranspiration was estimated. For this purpose meteorological data of Mehrabad synoptic station was selected. Using thisdata and according to eight famous evapotranspiration equations amounts of evapotranspiration wereforecasted by Box-Jenkins models. Equations of reference potential evapotranspiration that used in this study include FAO Penman Monteith FPM , FAO Blaney Criddle FBC , Turc, FAO Radiation Macking FRM , Priestley Taylor PT , Hargreaves Samani HS , Thornthwaite TW , and Corrected Jensen Haise CJH . By comparing RMSE of the models, it was determined that Box-Jenkins models are appropriateapproaches to evapotranspiration forecasting.

Keywords:

Box-Jenkins models , evapotranspiration , meteorological data