Pcoeffs

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:

<ul><li>K indicating the type of equilibrium constant</li><li>coefficient$a_0$</li><li>coefficient$a_1$</li><li>coefficient$a_2$</li><li>coefficient$b_0$</li><li>coefficient$b_1$</li><li>coefficient$b_2$</li></ul>

datasets

Calculates parameters of the seawater carbonate system.
        Code and/or corrections were contributed by Andreas Andersson,
        Jean-Marie Epitalon, Bernard Gentili, Andreas Hofmann, Jim Orr,
        Aurelien Proye and Karline Soetaert

Jean-Pierre Gattuso

seacarb

seawater carbonate chemistry with R

Pcoeffs function

A data frame with 14 rows and 7 variables

format

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.

Pcoeffs: Coefficients used for pressure-correcting the equilibrium constants

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