gsw_specvol_CT

specific volume

Contents

USAGE:

specvol_CT = gsw_specvol_CT(SA,CT,p)

DESCRIPTION:

Calculates specific volume from Absolute Salinity, Conservative
Temperature and pressure.
Note that this function uses the full Gibbs function.  There is an
alternative to calling this function, namely gsw_specvol_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.
TEOS-10
Click for a more detailed description of specific volume.

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 and CT are MxN.

OUTPUT:

specvol_CT  =  specific volume                               [ 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_CT = gsw_specvol_CT(SA,CT,p)
specvol_CT =
 1.0e-003 *
  0.978626618725186
  0.978222134953103
  0.976154774939840
  0.972961213383549
  0.971026778012244
  0.968989993773259

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. (2.7.2) 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