gsw: gsw_chem_potential_water_t_exact – R documentation

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gsw

gsw_chem_potential_water_t_exact

Chemical Potential of Water in Seawater

Description

Chemical Potential of Water in Seawater

Usage

gsw_chem_potential_water_t_exact(SA, t, p)

Arguments

`SA`	Absolute Salinity [ g/kg ]
`t`	in-situ temperature (ITS-90) [ degC ]
`p`	sea pressure [dbar], i.e. absolute pressure [dbar] minus 10.1325 dbar

Details

The present R function works with a wrapper to a C function contained within the GSW-C system (Version 3.05-4 dated 2017-08-07, available at https://github.com/TEOS-10/GSW-C, as git commit '5b4d959e54031f9e972f3e863f63e67fa4f5bfec'), which stems from the GSW-Fortran system (https://github.com/TEOS-10/GSW-Fortran) which in turn stems from the GSW-Matlab system (https://github.com/TEOS-10/GSW-Matlab). Consult http://www.teos-10.org to learn more about these software systems, their authorships, and the science behind it all.

Value

chemical potential [ J/kg ]

References

http://www.teos-10.org/pubs/gsw/html/gsw_chem_potential_water_t_exact.html

Examples

SA <- c(34.7118, 34.8915, 35.0256, 34.8472, 34.7366, 34.7324)
t <- c(28.7856, 28.4329, 22.8103, 10.2600,  6.8863,  4.4036)
p <- c(      10,       50,      125,      250,      600,      1000)
pot <- gsw_chem_potential_water_t_exact(SA, t, p)
expect_equal(pot, c(-8.545561146284534, -8.008085548342105, -5.103980139874876,
                  -0.634067782745442, 3.335566803473286, 7.555434445971858))

gsw

Gibbs Sea Water Functions

v1.0-5

GPL (>= 2) | file LICENSE

Authors

Dan Kelley [aut, cre, cph] (C wrapper plus R code, tests, and documentation), Clark Richards [aut, cph] (C wrapper plus R code, tests, and documentation), WG127 SCOR/IAPSO [aut, cph] (Original 'Matlab' and derived code)

Initial release

2017-08-08