Articles | Volume 19, issue 6
https://doi.org/10.5194/os-19-1719-2023
https://doi.org/10.5194/os-19-1719-2023
Research article
 | 
05 Dec 2023
Research article |  | 05 Dec 2023

A thermodynamic potential of seawater in terms of Absolute Salinity, Conservative Temperature, and in situ pressure

Trevor J. McDougall, Paul M. Barker, Rainer Feistel, and Fabien Roquet

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Latest update: 24 Apr 2024
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Short summary
A thermodynamic potential is derived, with the temperature argument being Conservative Temperature. All thermodynamic quantities can be derived from this new thermodynamic potential function, and it enables the accurate (to computer machine precision) calculation of the in situ temperature and entropy of seawater. This new thermodynamic potential function adds fundamental thermodynamic justification to the adoption of Conservative Temperature in oceanography in 2010.