# gsw_specvol_anom_CT_exact

`specific volume anomaly`

## 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`