gsw_t_deriv_chem_potential_water_t_exact

```temperature derivative of the chemical potential of water
in seawater```

USAGE:

`chem_potential_water_dt = gsw_t_deriv_chem_potential_water_t_exact(SA,t,p)`

DESCRIPTION:

```Calculates the temperature derivative of the chemical potential of
water in seawater.```

INPUT:

```SA =  Absolute Salinity                                         [ g/kg ]
t  =  in-situ temperature (ITS-90)                             [ deg C ]
p  =  sea pressure                                              [ dbar ]
(ie. absolute pressure - 10.1325 dbar)```
```SA & t need to have the same dimensions.
p may have dimensions 1x1 or Mx1 or 1xN or MxN, where SA & t are MxN.```

OUTPUT:

```chem_potential_water_dt  =  temperature derivative of chemical potential
of water in seawater           [ J/g/C ]```

EXAMPLE:

```SA = [34.7118; 34.8915; 35.0256; 34.8472; 34.7366; 34.7324;]
t =  [28.7856; 28.4329; 22.8103; 10.2600;  6.8863;  4.4036;]
p =  [     10;      50;     125;     250;     600;    1000;]```
`chem_potential_water_dt = gsw_t_deriv_chem_potential_water_t_exact(SA,t,p)`
`chem_potential_water_dt =`
```  -0.428798278908442
-0.423860344327343
-0.345277821010421
-0.164446485487145
-0.114228046736087
-0.076990819658255```

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