| sw_tfreeze {marelac} | R Documentation |
Estimates the freezing temperature of seawater, using the UNESCO 1983 polynomial.
Valid for salinity 4-40
sw_tfreeze(S=35, p = P-1.013253, P=1.013253 )
S |
practical salinity, -, |
p |
gauge or applied pressure, pressure referenced against the local atmospheric pressure, bar |
P |
true pressure, bar |
Temperature, degrees C
freezing temperature for S = 40, p = 50 is -2.588567 dgC.
Karline Soetaert <k.soetaert@nioo.knaw.nl>
Fofonoff NP and Millard RC Jr, 1983. Algorithms for computation of
fundamental properties of seawater. UNESCO technical papers in marine
science, 44, 53 pp.
http://unesdoc.unesco.org/images/0005/000598/059832EB.pdf
sw_adtgrad, sw_alpha, sw_beta,
sw_comp, sw_conserv, sw_cp,
sw_dens,
sw_depth, sw_enthalpy, sw_entropy,
sw_gibbs, sw_kappa,
sw_kappa_t, sw_sfac,
sw_svel, sw_tpot
sw_tfreeze(S = 40,p = 50) ## Check values sw_tfreeze(S = 10,p = 0) #-0.542 sw_tfreeze(S = 10,p = 10) #-0.618 sw_tfreeze(S = 30,p = 0) #-1.638 sw_tfreeze(S = 40,p = 50) #-2.589