Table 4 Climatic parameters required by used models.

From: Comparative assessment of empirical and hybrid machine learning models for estimating daily reference evapotranspiration in sub-humid and semi-arid climates

Type

Acronym

Parameters

 

Constants

  

Variables

             
  

φ

γ

Z

δ

λ

Rn

Rs

Ra

N

G

Tavg

Tmax

Tmin

U2

RHavg

RHmin

RHmax

es

ea

Com

PM-FAO56

 

x

 

x

 

x

x

  

x

x

  

x

   

x

x

 

VAL2013a

x

     

x

   

x

 

x

      
 

VAL2013b

x

     

x

   

x

  

x

x

    

MT

Dal1802

             

x

   

x

x

 

Trab1896

             

x

   

x

x

Rad

Harg1975

    

x

 

x

   

x

        
 

Irs2003

      

x

   

x

        

Tmp

HargS1985

       

x

  

x

x

x

      
 

BC1986

  

x

       

x

        
  1. Notation: Com: Combination, MT: Mass Transfer, Rad: Radiation and Tmp: Temperature.
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