gsw is an R package that provides a connection to the thermodynamic equation of seawater version 3.03, downloaded from teos-10.org on 2014-08-25. This package is still in development, and is on track for a planned submission to CRAN in January.

All the functions provided here reproduce teos-10.org test values to a tolerance of 1.5e-8, the default for numerical comparison in R working on a 64-bit machine. (The tests are part of the package-building process, as is usual in R.)

Function names match those used specified in the TEOS-10 documentation.

The plan is to update this package to match publicised changes to GSW. Users should be aware that this may involve changes to function names or arguments, if TEOS-10 alters such things.