gsw (version 1.2-0)

gsw_frazil_properties_potential_poly: Properties of Frazil ice i.t.o. potential enthalpy (polynomial version)

Description

Calculation of Absolute Salinity, Conservative Temperature, and ice mass fraction based on bulk Absolute Salinity, bulk potential enthalpy, and pressure

Usage

gsw_frazil_properties_potential_poly(SA_bulk, h_pot_bulk, p)

Value

a list containing SA_final, h_final and w_Ih_final.

Arguments

SA_bulk

Absolute Salinity of a combination of seawater and ice [ g/kg ]

h_pot_bulk

potential enthalpy of a mixture of seawater and ice [ J/kg ]

p

sea pressure [dbar], i.e. absolute pressure [dbar] minus 10.1325 dbar

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.

References

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

See Also

Other things related to enthalpy: gsw_CT_from_enthalpy(), gsw_dynamic_enthalpy(), gsw_enthalpy(), gsw_enthalpy_CT_exact(), gsw_enthalpy_diff(), gsw_enthalpy_first_derivatives(), gsw_enthalpy_first_derivatives_CT_exact(), gsw_enthalpy_ice(), gsw_enthalpy_t_exact(), gsw_frazil_properties_potential(), gsw_pot_enthalpy_from_pt_ice(), gsw_pot_enthalpy_from_pt_ice_poly(), gsw_pot_enthalpy_ice_freezing(), gsw_pot_enthalpy_ice_freezing_poly(), gsw_pt_from_pot_enthalpy_ice(), gsw_pt_from_pot_enthalpy_ice_poly(), gsw_specvol_first_derivatives(), gsw_specvol_first_derivatives_wrt_enthalpy()

Examples

SA_bulk <- c(     34.7118,   34.8915,   35.0256,   34.8472,   34.7366,   34.7324)
h_pot_bulk <- c(-4.5544e4, -4.6033e4, -4.5830e4, -4.5589e4, -4.4948e4, -4.4027e4)
p <- c(                10,        50,       125,       250,       600,      1000)
r <- gsw_frazil_properties_potential_poly(SA_bulk, h_pot_bulk, p)
stopifnot(all.equal(r$SA_final, c(39.098264696022831, 39.343217436835218, 39.434244243586633,
                                  39.159511498029801, 38.820458704205542, 38.542256756176229)))
stopifnot(all.equal(r$CT_final, c(-2.155537691991377, -2.200841508940901, -2.264094318382661,
                                  -2.344613208230164, -2.598663953454472, -2.900948531145453)))
stopifnot(all.equal(r$w_Ih_final, c(0.112190777010854, 0.113150823111566, 0.111797356032850,
                                    0.110121687760246, 0.105198620534670, 0.098848824039493)))