olm.calcite.PCO2EqFromCa

olm.calcite.PCO2EqFromCa(Ca, T_C=25.0, I=None)

Calculates the equilibrium PCO2 for a given concentration of calcium and temp.

Parameters:

Cafloat, numpy.ndarray, or pandas Series

Concentration of calcium in mol/L.

T_Cfloat, numpy.ndarray, or pandas Series (optional)

temperature of solution in degrees Celsius (default = 25 C)

Ifloat, numpy.ndarray, or pandas Series (optional)

Ionic strength of solution. If not provided, will be calculated from Ca alone.

Returns

——-

PCO2Eqfloat, numpy.ndarray, or pandas Series

Partial pressure of CO2 (atm) at which the solution would be in equilibrium w.r.t. calcite.

Notes

Assumes a H20-CO2-CaCO3 system. If a numpy array or pandas Series object are passed in as Ca arguments, then equilibrium PCO2s will be found iteratively in a for-loop and returned as the same data type given in the argument.