First Derivatives of Potential Temperature
Absolute Salinity [ g/kg ]
Conservative Temperature [ degC ]
A list containing
pt_SA [ K/(g/kg) ], the derivative of
potential temperature with respect to Absolute Salinity,
pt_CT [ unitless ], the derivative of potential temperature
with respect to Conservative Temperature.
This R function uses a wrapper to a C function
contained within the GSW-C system as updated 2021-03-27
with git commit 'f7bfebf44f686034636facb09852f1d5760c27f5'.
In turn, that C function uses data from the
file provided in the GSW-Matlab source code, version 3.06-11.
Unfortunately, this version 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
on 2021-0706, 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.
1 2 3 4 5 6 7
SA <- c(34.7118, 34.8915, 35.0256, 34.8472, 34.7366, 34.7324) CT <- c(28.8099, 28.4392, 22.7862, 10.2262, 6.8272, 4.3236) r <- gsw_pt_first_derivatives(SA, CT) stopifnot(all.equal(r$pt_SA, c(0.041863223165431, 0.041452303483011, 0.034682095247246, 0.018711079068408, 0.014079958329844, 0.010577326129948))) stopifnot(all.equal(r$pt_CT, c(0.997192967140242, 0.997451686508335, 0.998357568277750, 0.999996224076267, 1.000283719083268, 1.000525947028218)))
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.