gsw_specvol_anom_CT

specific volume anomaly

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.
TEOS-10
Click for a more detailed description of specific
volume anomaly.

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