Pcoeffs {seacarb} | R Documentation |
Coefficients used for pressure-correcting the equilibrium constants
Description
Pressure corrections are based on the following equations:
\ln{\frac{K_{i}^{P}}{K_{i}^{0}}} = -\frac{\Delta V_{i}}{RT}.P + 0.5\frac{\Delta K_{i}}{RT}.P^{2}
with
\Delta V_{i} = a_{0} + a_{1}T + a_{2}T^{2}
and
\Delta K_{i} = b_{0} + b_{1}T + b_{2}T^{2}
The variables are:
K indicating the type of equilibrium constant
coefficient
a_0
coefficient
a_1
coefficient
a_2
coefficient
b_0
coefficient
b_1
coefficient
b_2
Usage
Pcoeffs
Format
A data frame with 15 rows and 7 variables
Details
For Kb, to be consistent with Millero (1979) a2 was changed to -2.608e-3 instead of 2.608e-3 (value given in Millero, 1995) For Kw, coefficients are from Millero (1983).
Source
Millero F. J., 1979 The thermodynamics of the carbonate system in seawater. Geochemica et Cosmochemica Acta 43: 1651-1661.
Millero F. J., 1983 Influence of pressure on chemical processes in the sea. pp. 1-88. In J. P. Riley and R. Chester (eds.), Chemical Oceanography. Academic Press, New York.
Millero F. J., 1995 Thermodynamics of the carbon dioxide system in the oceans. Geochimica Cosmochimica Acta 59: 661-677.
See Also
Pcorrect