gsw_specvol_CT25

specific volume (25-term equation)

Contents

USAGE:

[specvol_CT25, in_funnel] = gsw_specvol_CT25(SA,CT,p)

DESCRIPTION:

Calculates specific volume from Absolute Salinity, Conservative
Temperature and pressure, using the computationally-efficient 25-term
expression for density (McDougall et al., 2010).
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_CT25  =  specific volume                             [ kg m^-3 ]
in_funnel     =  0, if SA, CT and p are outside the "funnel"
              =  1, if SA, CT and p are inside the "funnel"
Note. The term "funnel" describes the range of SA, CT and p over which
  the error in the fit of the computationally-efficient 25-term
  expression for density was calculated (McDougall et al., 2010).

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_CT25, in_funnel] = gsw_specvol_CT25(SA,CT,p)
specvol_CT25 =               in_funnel =
 1.0e-003 *
  0.978627229998447              1
  0.978222952143042              1
  0.976156169753986              1
  0.972959364911436              1
  0.971025684456263              1
  0.968989951595608              1

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