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TEOS10 software packages
GibbsSeaWater (GSW) Oceanographic Toolbox
The GibbsSeaWater (GSW) Oceanographic Toolbox contains the TEOS10 subroutines for evaluating the thermodynamic properties of pure water (using IAPWS09) and seawater (using IAPWS08 for the saline part). The GSW library does not provide properties of ice or moist air (these properties can be found in the SIA library). This GSW Oceanographic Toolbox does not adhere to strict basicSI units but rather oceanographic units are adopted.
Note that all the information buttons on the left below are independent of MATLAB, FORTRAN, C or PHP while the buttons on the right are for downloading the GSW Oceanographic Toolbox in these computer languages. The GSW Toolbox contents is particularly useful because it provides links to web pages which describe the thermodynamic theory behind each of the functions. Many of these web pages are intended to assist oceanographers gain confidence with the TEOS10 thermodynamic approach to seawater. Again, you can access this information from these links on the left below without having MATLAB or being a MATLAB user.
McDougall, T.J. and P.M. Barker, 2011: Getting started with TEOS10 and the Gibbs Seawater (GSW) Oceanographic Toolbox, 28pp., SCOR/IAPSO WG127, ISBN 9780646556215.
To install the GSW Toolbox in MATLAB
you MUST add all the SUBFOLDERS to the PATH,
then you MUST run "gsw_check_functions".
See Installation instructions below for the complete
installation instructions.


Previous versions of the GSW library
SeawaterIceAir (SIA)
The SeawaterIceAir (SIA) library contains the TEOS10 subroutines for evaluating a wide range of thermodynamic properties of pure water (using IAPWS95), seawater (using IAPWS08 for the saline part), ice Ih (using IAPWS06) and for moist air (using Feistel et al. (2010a), IAPWS (2010)). As a general rule, the inputs and the outputs of the algorithms in the SIA library are in basic SI units. Hence the salinity is Absolute Salinity in units of kg/kg (so that for example standard ocean Reference Salinity is input to SIA functions as 0.035 165 04 kg/kg rather than 35.16504 g/kg, in situ temperature is input as Absolute Temperature (T) in K, and pressure is input as Absolute Pressure (P) in Pa.


Previous versions of the SIA library