Conservative Temperature Freezing Point (Polynomial version)
gsw_CT_freezing_poly(SA, p, saturation_fraction = 1)
Absolute Salinity [ g/kg ]
sea pressure [dbar], i.e. absolute pressure [dbar] minus 10.1325 dbar
saturation fraction of dissolved air in seawater
Conservative Temperature at freezing of seawater [ degC ].
This R function uses a wrapper to a C function contained within the GSW-C system as updated 2021-12-28 at https://github.com/TEOS-10/GSW-C with git commit '98f0fd40dd9ceb0ba82c9d47ac750e935a7d0459'.
The C function uses data from the
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.
SA <- c(34.7118, 34.8915, 35.0256, 34.8472, 34.7366, 34.7324) p <- c( 10, 50, 125, 250, 600, 1000) saturation_fraction <- 1 CT_freezing <- gsw_CT_freezing(SA, p, saturation_fraction) stopifnot(all.equal(CT_freezing, c(-1.899683776424096, -1.940791867869104, -2.006240664432488, -2.092357761318778, -2.359300831770506, -2.677162675412748)))
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