of the carbon dioxide system in sea water. Version 2, A. G. Dickson & C. Goyet, eds. ORNL/CDIAC-74. GEOSECS data set JGOFS data set WOCE data set CARINA data set Carbonate system calculators The following packages calculate the state of the carbonate system in seawater (including pH): CO2SYS , available as a stand-alone executable, Excel spreadsheet, or MATLAB script. seacarb, a R package for Windows, Mac OS X and Linux (also available here) CSYS, a Matlab script Chemical oceanography Acid–base chemistry