| gsw_SP_from_C {gsw} | R Documentation |
Convert from Electrical Conductivity to Practical Salinity
Description
Convert from Electrical Conductivity to Practical Salinity
Usage
gsw_SP_from_C(C, t, p)
Arguments
C |
conductivity [ mS/cm ] |
t |
in-situ temperature (ITS-90) [ degC ] |
p |
sea pressure [dbar], i.e. absolute pressure [dbar] minus 10.1325 dbar |
Value
Practical Salinity (PSS-78) [ unitless ]
Implementation Note
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 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.
References
http://www.teos-10.org/pubs/gsw/html/gsw_SP_from_C.html
See Also
Other things related to salinity:
gsw_C_from_SP(),
gsw_SA_from_SP_Baltic(),
gsw_SA_from_SP(),
gsw_SA_from_Sstar(),
gsw_SP_from_SA(),
gsw_SP_from_SK(),
gsw_SP_from_SR(),
gsw_SP_from_Sstar(),
gsw_SR_from_SP(),
gsw_Sstar_from_SA(),
gsw_Sstar_from_SP(),
gsw_deltaSA_from_SP()
Other things related to conductivity:
gsw_C_from_SP()
Examples
C <- c(34.5487, 34.7275, 34.8605, 34.6810, 34.5680, 34.5600)
t <- c(28.7856, 28.4329, 22.8103, 10.2600, 6.8863, 4.4036)
p <- c( 10, 50, 125, 250, 600, 1000)
SP <- gsw_SP_from_C(C,t,p)
stopifnot(all.equal(SP, c(20.009869599086951, 20.265511864874270, 22.981513062527689,
31.204503263727982, 34.032315787432829, 36.400308494388170)))