| sw_entropy {marelac} | R Documentation |
Specific Entropy of Seawater
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, |
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 <karline.soetaert@nioz.nl>
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