# gsw_beta_CT_exact

```saline contraction coefficient at constant
Conservative Temperature.```

## USAGE:

`beta_CT_exact = gsw_beta_CT_exact(SA,CT,p)`

## DESCRIPTION:

```Calculates the saline (i.e. haline) contraction coefficient of seawater
at constant Conservative Temperature.```
```Note that this function uses the full Gibbs function.  There is an
alternative to calling this function, namely gsw_beta(SA,CT,p),
which uses the computationally efficient 75-term expression for specific
volume in terms of SA, CT and p (Roquet et al., 2015).``` ```Click for a more detailed description of the saline contraction coefficient at constant Conservative Temperature.```

## INPUT:

```SA  =  Absolute Salinity                                          [ g/kg ]
CT  =  Conservative Temperature (ITS-90)                         [ deg C ]
p   =  sea pressure                                               [ dbar ]
( i.e. 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:

```beta_CT_exact  =  saline contraction coefficient                  [ kg/g ]
at constant Conservative Temperature```

## EXAMPLE:

```SA = [34.7118; 34.8915; 35.0256; 34.8472; 34.7366; 34.7324;]
CT = [28.7856; 28.4329; 22.8103; 10.2600;  6.8863;  4.4036;]
p =  [     10;      50;     125;     250;     600;    1000;]```
`beta_CT_exact = gsw_beta_CT_exact(SA,CT,p)`
`beta_CT_exact =`
`1.0e-003 *`
```   0.717524805987739
0.717657492034394
0.726177115604472
0.750429402810300
0.754913922492702
0.756856584585433```

## AUTHOR:

`Paul Barker and Trevor McDougall                      [ 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. (2.19.3) 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`