fetch3.initial_conditions.calc_potential_vangenuchten#

calc_potential_vangenuchten(theta, theta_r, theta_s, alpha, m, n, rho, g)#

Calculates water potential from soil moisture, using van Genuchten equation

Parameters:

  • theta (float or np.ndarray) – soil water content [m3 m-3]

  • theta_r (float) – residual water content [m3 m-3]

  • theta_s (float) – saturated water content [m3 m-3]

  • alpha (float) – empirical van Genuchten parameter [m-1]

  • m (float) – empirical van Genuchten parameter [unitless]

  • n (float) – empirical van Genuchten parameter [unitless]

  • rho (float) – density of water [kg m-3]

  • g (float) – gravitational constant [m s-2]

Returns:

water_potential_Pa – water potential [Pa]

Return type:

float or np.ndarray