gsw: gsw_pt_from_entropy – R documentation

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gsw

gsw_pt_from_entropy

Potential Temperature from Entropy

Description

Potential Temperature from Entropy

Usage

gsw_pt_from_entropy(SA, entropy)

Arguments

`SA`	Absolute Salinity [ g/kg ]
`entropy`	specific entropy [ J/(degC*kg) ]

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

potential temperature [ degC ]

References

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

Examples

SA <- c(      34.7118,  34.8915,  35.0256,  34.8472, 34.7366, 34.7324)
entropy <- c(400.3892, 395.4378, 319.8668, 146.7910, 98.6471, 62.7919)
pt <- gsw_pt_from_entropy(SA, entropy)
expect_equal(pt, c(28.783179828078666, 28.420954825949291, 22.784952736245351,
                 10.230532066931868, 6.829213325916900, 4.324537782985845))

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