def calc_canopy_evaporation(pet, wetFrac):
    """ Calculate the evaporation from canopy interception storage

    Parameters
    ----------
    pet : int or float
        Potential evapotranspiration [mm day^-1]
    wetFrac : float
        Wetted fraction of the canopy

    Returns
    -------
    canopyEvap: float
        Evaporation from canopy interception storage [mm day^-1]
    """

    canopyEvap = pet * wetFrac

    return canopyEvap