olm.calcite.calc_kappa4Theory¶
- olm.calcite.calc_kappa4Theory(T_K, PCO2, a_H2CO3s)[source]¶
Calculates kappa4 in the PWP equation using the theoretical relation for kappa4 from Plummer, Wigley, and Parkhurst (1978) Equation 25 (as described in Dreybrodt [1988] equation 6.22b). In this case, a_H in the equation for kappa4 is the equilibrium surface value for the given carbonic acid concentration, as specified in the theory.
- Parameters:
- T_Kfloat
temperature Kelvin
- PCO2float
partial pressure of CO2 (atm)
- a_H2CO3sfloat
activity of carbonic acid (mol/L)
- Returns:
- kappa4float
constant kappa4 in the PWP equation (cm/s)
Notes
See more info under documentation for pwpRateTheory().