seacarb (version 3.3.3)

sp2sa_chem: From Practical to absolute salinity

Description

Converts from practical to absolute salinity based on total alkalinity as well as on the concentrations of dissolved inorganic carbon, nitrate and silicate.

Usage

sp2sa_chem(SP, TA=2300e-6, DIC=2000e-6, NO3=0, SIOH4=0)

Value

SA

Absolute salinity (g/kg)

Arguments

SP

Practical salinity on the practical salinity scale

TA

Total alkalinity, in mol/kg, default is 2300 µmol/kg

DIC

Dissolved inorganic carbon concentration in mol/kg, default is 2000 µmol/kg

NO3

Total nitrate concentration in mol/kg, default is 0

SIOH4

Total silicate concentration in mol/kg, default is 0

Author

Jean-Marie Epitalon

Details

Converts from practical to absolute salinity from carbonate system parameters and ion concentration which mostly affect water density anomalies.

References

McDougall T. J., Jackett D. R., Millero F. J., Pawlowicz R. and Barker P. M., 2012. A global algorithm for estimating Absolute Salinity. Ocean Science 8, 1123-1134.

Pawlowicz R., Wright D. G. and Millero F. J., 2011. The effects of biogeochemical processes on oceanic conductivity/salinity/density relationships and the characterization of real seawater. Ocean Science 7, 363-387.

Pawlowicz R., 2013. What every oceanographer needs to know about TEOS-10 (The TEOS-10 Primer). http://www.teos-10.org/

See Also

sa2sp_chem does the reverse, sp2sa_geo

Examples

   # Calculate the absolute salinity of a sample with practical Salinity of 35,
   # Total Alkalinity of 0.00234 mol/kg and DIC of 0.00202 mol/kg
   SA <- sp2sa_chem(SP=35, TA=0.00234, DIC=0.00202)