sw_entropy: Specific Entropy of Seawater

In marelac: Tools for Aquatic Sciences

Description

Computes the seawater specific entropy, J/(kg*K)

Usage

sw_entropy(S = 35, t = 25, p = P-1.013253, P = 1.013253)

Arguments

S	Absolute salinity (g/kg),
t	Temperature, degrees C,
p	gauge or applied pressure, pressure referenced against the local atmospheric pressure, bar
P	true pressure, bar

Value

Specific entropy, J/(kg*K).

Author(s)

Karline Soetaert <[e-mail]>

References

Feistel R, 2008. A Gibbs function for seawater thermodynamics for -6 to 80 dgC and salinity up to 120 g/kg. Deep-Sea Research I, 55, 1639-1671.

McDougall TJ, Feistel R, Millero FJ, Jackett DR, Wright DG, King BA, Marion GM, Chen C-T A and Spitzer P, 2009. Calculation of the Thermophysical Properties of Seawater, Global Ship-based Repeat Hydrography Manual, IOCCP Report No. 14, ICPO Publication Series no. 134.

See Also

sw_adtgrad, sw_alpha, sw_beta, sw_comp, sw_conserv, sw_cp, sw_dens, sw_depth, sw_enthalpy, sw_gibbs, sw_kappa, sw_kappa_t, sw_sfac, sw_svel, sw_tfreeze, sw_tpot

convert_PStoAS, to convert from practical salinity (-) to absolute salinity (g/kg)

Examples

sw_entropy(35.7, 25.5, 102.3) #352.81879771528

Example output

Loading required package: shape
[1] 352.8188

marelac documentation built on Feb. 12, 2020, 3 a.m.