CSIRO Marine Research MATLAB Seawater Software Library (2006)

Brief description

The SeaWater library of EOS-80 seawater properties is obsolete; it has been superseded by the Gibbs SeaWater (GSW) Oceanographic Toolbox of the International Thermodynamic Equation Of Seawater - 2010, (TEOS-10). The official site for the thermodynamic properties of seawater is www.TEOS-10.org. TEOS-10 is based on a Gibbs function formulation from which all thermodynamic properties of seawater (density, enthalpy, entropy sound speed, etc.) can be derived in a thermodynamically consistent manner. TEOS-10 has been endorsed by SCOR and IAPSO and has been adopted by the Intergovernmental Oceanographic Commission at its 25th Assembly in June 2009 (http:///www.teos-10.org/pubs/IOC-XXV-3_e.pdf) to replace EOS-80 as the official description of seawater and ice properties in marine science. A significant change compared with past practice is that TEOS-10 uses Absolute Salinity SA (mass fraction of salt in seawater) as opposed to Practical Salinity SP (which is essentially a measure of the conductivity of seawater) to describe the salt content of seawater. Ocean salinities now have units of g/kg. The GSW Oceanographic Toolbox, http://www.teos-10.org/software.htm has almost 100 functions, such as density, entropy, enthalpy, Conservative Temperature, buoyancy frequency, and various geostrophic streamfunctions. Historical Releases of the now-obsolete SeaWater library. SEAWATER Library Version 3.0 (for Matlab 5.x onwards) is a Library of MATLAB Computational Routines for the EOS-80 Properties of Seawater. Developed by Phil Morgan, CSIRO Marine Research, updated and maintained by Lindsay Pender Lindsay.pender@csiro.au Last updated 2006. LIST OF ROUTINES: - SW_ADTG Adiabatic temperature gradient - SW_ALPHA Thermal expansion coefficient (alpha) - SW_AONB Calculate alpha/beta (a on b) - SW_BETA Saline contraction coefficient (beta) - SW_BFRQ Brunt-Vaisala Frequency Squared (N^2) - SW_COPY Copyright and Licence file - SW_CP Heat Capacity (Cp) of Sea Water - SW_DENS Density of sea water - SW_DENS0 Denisty of sea water at atmospheric pressure - SW_DIST Distance between two lat, lon coordinates - SW_DPTH Depth from pressure - SW_F Coriolis factor "f" - SW_FP Freezing Point of sea water - SW_G Gravitational acceleration - SW_GPAN Geopotential anomaly - SW_GVEL Geostrophic velocity - SW_INFO Information on the SEAWATER library - SW_PDEN Potential Density - SW_PRES Pressure from depth - SW_PTMP Potential temperature - SW_SALS Salinity of sea water - SW_SALT Salinity from cndr, T, P - SW_SATAr Solubility (saturation) of Ar in seawater -SW_SATN2 Solubility (saturation) of N2 in seawater - SW_SATO2 Solubility (saturation) of O2 in seawater - SW_SVAN Specific volume anomaly - SW_SVEL Sound velocity of sea water - SW_SMOW Denisty of standard mean ocean water (pure water) - SW_TEMP Temperature from potential temperature - SW_TEST Run test suite on library - SW_VER Version number of SEAWATER library LOW LEVEL ROUTINES CALLED BY ABOVE: (also available for you to use) - SW_C3515 Conductivity at (35,15,0) - SW_CNDR Conductivity ratio R = C(S,T,P)/C(35,15,0) - SW_SALDS Differiential Ds/d(sqrt(Rt)) at consta

Lineage

Progress Code: completed

Maintenance and Update Frequency: asNeeded

Statement: The SeaWater library of EOS-80 seawater properties is obsolete; it has been superseded by the Gibbs SeaWater (GSW) Oceanographic Toolbox of the International Thermodynamic Equation Of Seawater - 2010, (TEOS-10). The official site for the thermodynamic properties of seawater is www.TEOS-10.org. The current version is 3.0
Release 1.2b - 12 Oct 1994 was the first official release and announcement on the internet. This software is maintained by Dr Lindsay Pender. The Python module developed independently by Filipe Fernandes (University of Massachusetts Dartmouth) in 2010 has not been tested by CMAR. Jeanette O'Sullivan added an update of version 3.3 on 19/12/2014 provided by Paul Barker. Named version 3_3.1

Notes

Credit
P. Morgan

Credit
L. Pender (CSIRO) Python Module developed by Filipe Fernandes (University of Massachusetts Dartmouth) in 2010.