K2p {seacarb}R Documentation

Second dissociation constant of phosphoric acid (mol/kg)

Description

Second dissociation constant of phosphoric acid (mol/kg)

Usage

K2p(S = 35, T = 25, P = 0, pHscale = "T")

Arguments

S Salinity, default is 35
T Temperature in degrees Celsius, default is 25oC
P Hydrostatic pressure in bar (surface = 0), default is 0
pHscale choice of pH scale: "T" for using the total scale, "F" for using the free scale and "SWS" for using the seawater scale, default is total scale

Details

Note that the arguments can be given as a unique number or as vectors. If the lengths of the vectors are different, the longer vector is retained and only the first value of the other vectors is used. It can therefore be critical to use vectors of the same length

The pressure correction was applied on the seawater scale. Hence, values were first transformed from the total scale to the seawater scale, the pressure correction applied as described by Millero (1995), and the value was transformed back to the required scale (T, F or SWS).

Value

K2p Second dissociation constant of phosphoric acid (mol/kg)

Author(s)

Heloise Lavigne, Aurelien Proye and Jean-Pierre Gattuso gattuso@obs-vlfr.fr

References

Dickson A. G., Sabine C. L. and Christian J. R., 2007 Guide to best practices for ocean CO2 measurements. PICES Special Publication 3, 1-191.

Millero F. J., 1995. Thermodynamics of the carbon dioxide system in the oceans. Geochimica Cosmochimica Acta 59: 661-677.

See Also

K1p, K3p.

Examples

  K2p(35,25,0)

[Package seacarb version 2.3.1 Index]