# gsw_CT_maxdensity

```Conservative Temperature of maximum density of seawater
(75-term equation)```

## USAGE:

`CT_maxdensity = gsw_CT_maxdensity(SA,p)`

## DESCRIPTION:

```Calculates the Conservative Temperature of maximum density of seawater.
This function returns the Conservative Temperature at which the density
of seawater is a maximum, at given Absolute Salinity, SA, and sea
pressure, p (in dbar).  This function uses the computationally-
efficient 75-term expression for specific volume in terms of SA,
CT and p (Roquet et al., 2015).```
```Note that the 75-term equation has been fitted in a restricted range of
parameter space, and is most accurate inside the "oceanographic funnel"
described in  McDougall et al. (2003).  The GSW library function
"gsw_infunnel(SA,CT,p)" is avaialble to be used if one wants to test if
some of one's data lies outside this "funnel". ``` ```Click for a more detailed description of calculating the Conservative Temperature of maximum density.```

## INPUT:

```SA =  Absolute Salinity                                         [ g/kg ]
p  =  sea pressure                                              [ dbar ]
( i.e. absolute pressure - 10.1325 dbar )```
`p may have dimensions 1x1 or Mx1 or 1xN or MxN, where SA is MxN.`

## OUTPUT:

```CT_maxdensity  =  Conservative Temperature at which the density of
seawater is a maximum for given Absolute Salinity
and pressure.                                [ deg C ]```

## EXAMPLE:

```SA = [34.7118; 34.8915; 35.0256; 34.8472; 34.7366; 34.7324;]
p =  [     10;      50;     125;     250;     600;    1000;]```
`CT_maxdensity = gsw_CT_maxdensity(SA,p)`
`CT_maxdensity =`
```  -3.731407240089855
-3.861137427731664
-4.060390602245942
-4.306222571955388
-5.089240667106197
-6.028034316992341```

## AUTHOR:

`Trevor McDougall & 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 section 3.42 of this TEOS-10 Manual.```
```McDougall, T.J., D.R. Jackett, D.G. Wright and R. Feistel, 2003:
Accurate and computationally efficient algorithms for potential
temperature and density of seawater.  J. Atmosph. Ocean. Tech., 20,
pp. 730-741.```
```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`