varwg.meteo.meteox2y.turc_rad

varwg.meteo.meteox2y.turc_rad(at, rh, G)

calculates the potential evapotranspiration following Turc

with the global radiation instead of the empiric factors according to Hydrologie und Wasserwirtschaft by Maniak

Parameters:

atnumpy.array of floats

mean daily air temperature [deg C]

rhnumpy.array of floats

relative humidity [%]

Gnumpy.array of floats

global radiation [W/m^2]

Returns:

etpnumpy.array of floats

potential evapotranspiration [mm/d]

Notes

• For etp < 0.1 mm/d the evapotranspiration rate is set to 0.1 mm/d. [DVWK 1996]

• According to the energetic limit of 7 mm/d in Germany, ETPmax is set to 7 mm/d.