pyet.temperature.linacre

pyet.temperature.linacre(tmean, elevation, lat, tdew=None, tmax=None, tmin=None, clip_zero=True)

Potential evapotranspiration calculated according to Linacre (1977).

Parameters:

• tmean (pandas.Series or array_like) – average day temperature [°C].

• elevation (array_like) – the site elevation [m].

• lat (array_like, optional) – the site latitude [°].

• tdew (pandas.Series or array_like, optional) – mean dew-point temperature [°C].

• tmax (pandas.Series or array_like, optional) – maximum day temperature [°C].

• tmin (pandas.Series or array_like, optional) – minimum day temperature [°C].

• clip_zero (bool, optional) – if True, replace all negative values with 0.

Returns:

• pandas.Series or array_like containing the calculated potential

• evapotranspiration [mm d-1].

Examples

>>> pet_linacre = linacre(tmean, elevation, lat)

Notes

Based on equation 5 in (Xu and Singh, 2001).

\[PET = \frac{\frac{500 T_m}{(100-lat)}+15 (T_a-T_d)}{80-T_a}\]