gsw_CT_from_pt function

Conservative Temperature from Potential Temperature

gsw_CT_from_pt(SA, pt)

Arguments

• SA: Absolute Salinity [ g/kg ]. The valid range for most gsw functions is 0 to 42 g/kg.
• pt: potential temperature (ITS-90) [ degC ]

Returns

Conservative Temperature [ degC ]

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

SA <- c(34.7118, 34.8915, 35.0256, 34.8472, 34.7366, 34.7324)
pt <- c(28.7832, 28.4209, 22.7850, 10.2305,  6.8292,  4.3245)
CT <- gsw_CT_from_pt(SA, pt)
stopifnot(all.equal(CT, c(28.809923015982083, 28.439144260767169, 22.786246608464264,
                          10.226165605435785, 6.827183417643142,  4.323565182322069)))

References

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