Determination of dominant weather parameters on reference evapotranspiration by path analysis theory
Path theory is a new valid method for selecting dominant factor affecting ET0. ET0 could be accurately estimated by only two climate factors. Sunshine duration has strongest effect on ET0. Combination of path analysis and ANN has accuracy in ET0 estimation. Only two stations ET0 estimation models can be universalized in South China.
reference evapotranspiration path analysis penmanmonteith equation artificial neural network