pmix {seacarb}R Documentation

pmix

Description

Calculates the carbonate chemistry after mixing of two water samples with different pCO2

Usage

pmix(flag, var1, var2, pCO2s, wf, S=35, T=20, P=0, Pt=0, Sit=0, k1k2="l", kf="pf", pHscale="T")

Arguments

flag select the couple of variables available. The flags which can be used are:
flag = 1 pH and CO2 given
flag = 2 CO2 and HCO3 given
flag = 3 CO2 and CO3 given
flag = 4 CO2 and ALK given
flag = 5 CO2 and DIC given
flag = 6 pH and HCO3 given
flag = 7 pH and CO3 given
flag = 8 pH and ALK given
flag = 9 pH and DIC given
flag = 10 HCO3 and CO3 given
flag = 11 HCO3 and ALK given
flag = 12 HCO3 and DIC given
flag = 13 CO3 and ALK given
flag = 14 CO3 and DIC given
flag = 15 ALK and DIC given
flag = 21 pCO2 and pH given
flag = 22 pCO2 and HCO3 given
flag = 23 pCO2 and CO3 given
flag = 24 pCO2 and ALK given
flag = 25 pCO2 and DIC given
var1 Value of the first variable in mol/kg except for pH and for pCO2 in μatm
var2 Value of the second variable in mol/kg except for pH
pCO2s Partial pressure of the high CO2 component in μatm
wf Weight fraction of the high CO2 seawater vs normal seawater
S Salinity
T Temperature in degrees Celsius
P Hydrostatic pressure in bar (surface = 0)
Pt Concentration of total phosphate in mol/kg
Sit Concentration of total silicate in mol/kg
k1k2 "l" for using K1 and K2 from Lueker et al. and "r" for using K1 and K2 from Roy and al. , default is "l"
kf "pf" for using Kf from Perez and Fraga (1987) and "dg" for using Kf from Dickson and Goyet (1979), default is "pf"
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

Value

The function returns a data frame containing the following columns:

comment The initial or final state water
S Salinity
T Temperature in degrees Celsius
P Pressure in bar
pH pH
CO2 CO2 concentration (mol/kg)
pCO2 pCO2, CO2 partial pressure (μatm)
fCO2 fCO2, CO2 fugacity (μatm)
HCO3 HCO3 concentration (mol/kg)
CO3 CO3 concentration (mol/kg)
DIC DIC concentration (mol/kg)
ALK ALK, total alkalinity (mol/kg)
OmegaAragonite Omega aragonite, aragonite saturation state
OmegaCalcite Omega calcite, calcite saturation state

Author(s)

Jean-Pierre Gattuso gattuso@obs-vlfr.fr

Examples

pmix(flag=24, var1=384, var2=2302e-6, pCO2s=1e6, wf=0.003, S=34.3, T=16, P=0, pHscale="T", kf="pf", k1k2="l")

[Package seacarb version 2.1.2 Index]