# gsw_specvol_anom_CT_exact

    specific volume anomaly

## Contents

- USAGE:
- DESCRIPTION:
- INPUT:
- OUTPUT:
- EXAMPLE:
- AUTHOR:
- VERSION NUMBER:
- REFERENCES:

## USAGE:

    specvol_anom_CT_exact = gsw_specvol_anom_CT_exact(SA,CT,p,SA_ref,CT_ref)

## DESCRIPTION:

    Calculates specific volume anomaly from Absolute Salinity, Conservative
    Temperature and pressure.  If the Absolute Salinity and Conservative
    Temperature reference value (SA_ref and CT_ref) are not defined then a
    default 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(SA,CT,p,SA_ref,CT_ref), which uses the computationally
    efficient 75-term expression for specific volume in terms of SA, CT and
    p (Roquet et al., 2015).

## INPUT:

    SA  =  Absolute Salinity                                        [ g/kg ]
    CT  =  Conservative Temperature                                [ deg C ]
    p   =  sea pressure                                             [ dbar ]
           ( i.e. absolute pressure - 10.1325 dbar )

    OPTIONAL:
    SA_ref =  reference Absolute Salinity                           [ g/kg ]
    CT_ref =  reference Conservative Temperature (ITS-90)          [ deg C ]

    SA & CT need to have the same dimensions.
    SA_ref & CT_ref must be scalars and have dimensions 1x1.
    p may have dimensions 1x1 or Mx1 or 1xN or MxN, where SA & CT are MxN.

## OUTPUT:

    specvol_anom_CT_exact  =  specific volume anomaly             [ m^3/kg ]

## 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;]
    SA_ref = 30
    CT_ref = 4

    specvol_anom_CT_exact = gsw_specvol_anom_CT_exact(SA,CT,p,SA_ref,CT_ref)

    specvol_anom_CT_exact =

     1.0e-005 *

       0.182655187846168
       0.160102368094279
      -0.013140431041837
      -0.276850837458798
      -0.315651306351944
      -0.344676899106738

## AUTHOR:

     Trevor McDougall and Paul Barker               [ help@teos-10.org ]

## VERSION NUMBER:

    3.05 (16th February, 2015)

## 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.

    Roquet, F., G. Madec, T.J. McDougall, P.M. Barker, 2015: Accurate
     polynomial expressions for the density and specifc volume of seawater
     using the TEOS-10 standard. Ocean Modelling.

    The software is available from http://www.TEOS-10.org