pgas {seacarb} | R Documentation |
Calculates the carbonate chemistry after changes in pCO2 generated by gas bubbling
pgas(flag, var1, var2, pCO2g, S=35, T=20, P=0, Pt=0, Sit=0)
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 |
pCO2g |
CO2 partial pressure of the gas used for bubbling in μatm |
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 |
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 |
Jean-Pierre Gattuso gattuso@obs-vlfr.fr
pgas(flag=15, var1=2302e-6, var2=2050e-6, pCO2g=750, S=35, T=20, P=0, Pt=0, Sit=0)