gsw_CT_from_pt: Conservative Temperature from Potential Temperature

View source: R/gsw.R

gsw_CT_from_ptR Documentation

Conservative Temperature from Potential Temperature


Conservative Temperature from Potential Temperature


gsw_CT_from_pt(SA, pt)



Absolute Salinity [ g/kg ]


potential temperature (ITS-90) [ degC ]


Conservative Temperature [ degC ]

Implementation Note

This R function uses a wrapper to a C function contained within the GSW-C system as updated 2021-12-28 at with git commit '98f0fd40dd9ceb0ba82c9d47ac750e935a7d0459'.

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 website. Therefore, in the interests of making GSW-R be self-contained, a copy was downloaded from on 2022-05-25, the .mat file was stored in the developer/create_data directory of, and then the dataset used in GSW-R was created based on that .mat file.

Please consult to learn more about the various TEOS-10 software systems.



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)))

gsw documentation built on Oct. 16, 2022, 5:06 p.m.