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scikits.hydroclimpy.lib.evaporation.PotentialEvapoTranspiration.Makkink

PotentialEvapoTranspiration.Makkink(Rs=None)

Computes the PET with the Makkink (1957) method [Makkink_1957]:

PET = 0.61 \cfrac{\Delta}{\Delta+\gamma} \cfrac{R_s}{\lambda_H} - 0.12

Parameters:

Rs : TimeSeries, optional

Incoming solar radiations [MJ.m-2.d-1]. If None, Rs is estimated from extraterrestrial solar radiations (Ra) and minimum and maximum temperatures as K_{t} \sqrt{\Delta\;T} Ra.