gsw (version 1.0-5)

gsw_melting_ice_SA_CT_ratio_poly: Calculate d(SA)/d(CT) for Ice Melting in Seawater (Polynomial version)

Description

Calculate d(SA)/d(CT) for Ice Melting in Seawater (Polynomial version)

Usage

gsw_melting_ice_SA_CT_ratio_poly(SA, CT, p, t_Ih)

Arguments

SA

Absolute Salinity [ g/kg ]

CT

Conservative Temperature [ degC ]

p

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

t_Ih

initial temperature of ice [ degC ]

Value

ratio of change in SA to change in CT [ g/kg/degC ].

Details

The present R function works with a wrapper to a C function contained within the GSW-C system (Version 3.05-4 dated 2017-08-07, available at https://github.com/TEOS-10/GSW-C, as git commit '5b4d959e54031f9e972f3e863f63e67fa4f5bfec'), which stems from the GSW-Fortran system (https://github.com/TEOS-10/GSW-Fortran) which in turn stems from the GSW-Matlab system (https://github.com/TEOS-10/GSW-Matlab). Consult http://www.teos-10.org to learn more about these software systems, their authorships, and the science behind it all.

References

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

Examples

# NOT RUN {
SA <- c(   34.7118,  34.8915,  35.0256,  34.8472,  34.7366, 34.7324)
CT <- c(    3.7856,   3.4329,   2.8103,   1.2600,   0.6886,  0.4403)
p <- c(         10,       50,      125,      250,      600,    1000)
t_Ih <- c(-10.7856, -13.4329, -12.8103, -12.2600, -10.8863, -8.4036)
r <- gsw_melting_ice_SA_CT_ratio_poly(SA, CT, p, t_Ih)
expect_equal(r, c(0.373840908629278, 0.371878512745054, 0.377104658031030,
                0.382777681212224, 0.387133812279563, 0.393947267481204))
# }