pyet.radiation.mcguinness_bordne

pyet.radiation.mcguinness_bordne(tmean, lat, k=0.0147, clip_zero=True)

Potential evapotranspiration calculated according to McGuinness and Bordne (1972).

Parameters:

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

• lat (float/xarray.DataArray, optional) – the site latitude [rad].

• k (float, optional) – calibration coefficient [-].

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

Returns:

• pandas.Series or xarray.DataArray containing the calculated potential

• evapotranspiration [mm d-1].

Examples

>>> pet_mcguinness_bordne = mcguinness_bordne(tmean, lat)

Notes

Based on equation 13 in Xu and Singh (2000).

\[PET = k\frac{R_a (T_{mean} + 5)}{\lambda}\]