R/gsw.R
gsw_melting_seaice_into_seawater.RdCalculate properties related to seaice melting in seawater
gsw_melting_seaice_into_seawater(SA, CT, p, w_seaice, SA_seaice, t_seaice)Absolute Salinity [ g/kg ]
Conservative Temperature [ degC ]
sea pressure [dbar], i.e. absolute pressure [dbar] minus 10.1325 dbar
mass fraction (seaice) / (water + seaice)
Absolute Salinity of seaice
temperature of seaice
a list containing SA_final and CT_final.
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.
SA <- c( 34.7118, 34.8915, 35.0256, 34.8472, 34.7366, 34.7324)
CT <- c( 4.7856, 2.4329, 1.8103, 1.2600, 0.6886, 0.4403)
p <- c( 10, 50, 125, 250, 600, 1000)
w_seaice <- c( 0.0560, 0.02513, 0.02159, 0.01210, 0.00943, 0.00751)
SA_seaice <- c( 5, 4.8, 3.5, 2.5, 1, 0.4)
t_seaice <- c(-4.7856, -4.4329, -3.8103, -4.2600, -3.8863, -3.4036)
r <- gsw_melting_seaice_into_seawater(SA, CT, p, w_seaice, SA_seaice, t_seaice)
stopifnot(all.equal(r$SA_final, c(33.047939199999995, 34.135300604999998, 34.344962295999999,
34.455798880000003, 34.418463862000003, 34.474563675999995)))
stopifnot(all.equal(r$CT_final, c(-0.018822367305381, 0.345095540241769, 0.020418581143151,
0.242672380976922, -0.111078380121959, -0.197363471215418)))