gsw (version 1.0-5)

gsw_specvol_alpha_beta: Specific Volume, alpha, and beta

Description

Specific Volume, alpha, and beta

Usage

gsw_specvol_alpha_beta(SA, CT, p)

Arguments

SA

Absolute Salinity [ g/kg ]

CT

Conservative Temperature [ degC ]

p

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

Value

a list holding specvol, the specific volume [ m^3/kg ], alpha, the thermal expansion coefficient [ 1/degC ], and beta, the haline contraction coefficient [ kg/g ].

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_specvol_alpha_beta.html

See Also

Other things related to density: gsw_CT_from_rho, gsw_CT_maxdensity, gsw_SA_from_rho, gsw_alpha_on_beta, gsw_alpha_wrt_t_exact, gsw_alpha_wrt_t_ice, gsw_alpha, gsw_beta_const_t_exact, gsw_beta, gsw_pot_rho_t_exact, gsw_rho_alpha_beta, gsw_rho_first_derivatives_wrt_enthalpy, gsw_rho_first_derivatives, gsw_rho_ice, gsw_rho_t_exact, gsw_rho, gsw_sigma0, gsw_sigma1, gsw_sigma2, gsw_sigma3, gsw_sigma4, gsw_specvol_anom_standard, gsw_specvol_ice, gsw_specvol_t_exact, gsw_specvol

Examples

# NOT RUN {
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)
p <- c(      10,      50,     125,     250,     600,    1000)
r <- gsw_specvol_alpha_beta(SA, CT, p)
expect_equal(r$specvol/1e-3, c(0.978626852431313, 0.978222365701325, 0.976155264597929,
                             0.972961258011157, 0.971026719344908, 0.968989944622149))
expect_equal(r$alpha/1e-3, c(0.324638934509245, 0.322655537959731, 0.281145723210171,
                           0.173199716344780, 0.146289673594824, 0.129414845334599))
expect_equal(r$beta/1e-3, c(0.717483987596135, 0.717647512290095, 0.726211643644768,
                          0.750500751749777, 0.755052064788492, 0.757050813384370))
# }