gsw_chem_potential_water_ice() R function from [gsw]

Chemical Potential of Ice


gsw_chem_potential_water_ice(t, p)

Arguments

t: in-situ temperature (ITS-90) [ degC ]
p: sea pressure [dbar], i.e. absolute pressure [dbar] minus 10.1325 dbar

Returns

chemical potential [ J/kg ]

Implementation Note

This R function uses a wrapper to a C function contained within the GSW-C system as updated 2022-10-11 at https://github.com/TEOS-10/GSW-C with git commit 657216dd4f5ea079b5f0e021a4163e2d26893371.

The C function uses data from the library/gsw_data_v3_0.mat

file provided in the GSW-Matlab source code, version 3.06-11. Unfortunately, this version of the mat file is no longer displayed on the TEOS-10.org website. Therefore, in the interests of making GSW-R be self-contained, a copy was downloaded from http://www.teos-10.org/software/gsw_matlab_v3_06_11.zip on 2022-05-25, the .mat file was stored in the developer/create_data directory of https://github.com/TEOS-10/GSW-R, and then the dataset used in GSW-R was created based on that .mat file.

Please consult http://www.teos-10.org to learn more about the various TEOS-10 software systems.

Examples


t <- c(-10.7856, -13.4329, -12.8103, -12.2600,  -10.8863,  -8.4036)
p <- c(      10,       50,      125,      250,      600,      1000)
pot <- gsw_chem_potential_water_ice(t, p)
stopifnot(all.equal(pot/1e4, c(-1.340648365149857, -1.644921413491445, -1.480991678890353,
                               -1.272436055728805, -0.711509477199393, 0.045575390357792)))

References

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

gsw_chem_potential_water_ice function