Contents
USAGE:
specvol_anom_CT = gsw_specvol_anom_CT(SA,CT,p)
DESCRIPTION:
Calculates specific volume anomaly from Absolute Salinity, Conservative
Temperature and pressure. The reference value of Absolute Salinity is
SSO and the reference value of Conservative Temperature is equal to
0 degress C.
Note that this function uses the full Gibbs function. There is an
alternative to calling this function, namely
gsw_specvol_anom_CT25(SA,CT,p), which uses the computationally efficient
25-term expression for density in terms of SA, CT and p
(McDougall et al., (2010)). For SA, CT and p values which fall inside
the oceanographic "funnel" (McDougall et al., 2010), this
computationally efficient (i. e. faster) 25-term version fits the
underlying laboratory density data almost as well as does the density
derived from the full TEOS-10 Gibbs function.
INPUT:
SA = Absolute Salinity [ g/kg ]
CT = Conservative Temperature [ deg C ]
p = sea pressure [ dbar ]
(ie. absolute pressure - 10.1325 dbar)
SA & CT need to have the same dimensions.
p may have dimensions 1x1 or Mx1 or 1xN or MxN, where SA & CT are MxN.
OUTPUT:
specvol_anom_CT = specific volume anomaly [ kg m^-3 ]
EXAMPLE:
SA = [34.7118; 34.8915; 35.0256; 34.8472; 34.7366; 34.7324;]
CT = [28.8099; 28.4392; 22.7862; 10.2262; 6.8272; 4.3236;]
p = [ 10; 50; 125; 250; 600; 1000;]
specvol_anom_CT = gsw_specvol_anom_CT(SA,CT,p)
specvol_anom_CT =
1.0e-005 *
0.601043832858901
0.578601553381862
0.405565632906335
0.142198842767438
0.104351643832878
0.076396789174221
AUTHOR:
Trevor McDougall and Paul Barker [ help_gsw@csiro.au ]
VERSION NUMBER:
2.0 (26th August, 2010)
REFERENCES:
IOC, SCOR and IAPSO, 2010: The international thermodynamic equation of
seawater - 2010: Calculation and use of thermodynamic properties.
Intergovernmental Oceanographic Commission, Manuals and Guides No. 56,
UNESCO (English), 196 pp. Available from the TEOS-10 web site.
See Eqn. (3.7.3) of this TEOS-10 Manual.
McDougall T. J., D. R. Jackett, P. M. Barker, C. Roberts-Thomson, R.
Feistel and R. W. Hallberg, 2010: A computationally efficient 25-term
expression for the density of seawater in terms of Conservative
Temperature, and related properties of seawater. To be submitted
to Ocean Science Discussions.
The software is available from http://www.TEOS-10.org