sa2sp_chem | R Documentation |
Converts from absolute to practical salinity (SP). Salinity conversion depends on total alkalinity as well as the concentrations of dissolved inorganic carbon, nitrate and silicate.
sa2sp_chem(SA, TA=2300e-6, DIC=2000e-6, NO3=0, SIOH4=0)
SA |
Absolute salinity in g/kg |
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 |
Convert from absolute to practical salinity from carbon system parameters and ion concentration which most affect water density anomalies.
SP |
Practical salinity (in psu) |
Jean-Marie Epitalon
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/
sp2sa_chem does the reverse, sa2sp_geo
# Calculate the practical salinity of a sample with Absolute Salinity of 35 g/kg,
# Total Alkalinity of 0.00234 mol/kg and DIC of 0.00202 mol/kg
SP <- sa2sp_chem(SA=35, TA=0.00234, DIC=0.00202)
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.