# gsw_dynamic_enthalpy_t_exact

**dynamic enthalpy of seawater**

## Contents

## USAGE:

dynamic_enthalpy_t_exact = gsw_dynamic_enthalpy_t_exact(SA,t,p)

## DESCRIPTION:

Calculates the dynamic enthalpy of seawater from Absolute Salinity,
in situ temperature and pressure. Dynamic enthalpy was defined by
Young (2010) as the difference between enthalpy and potential enthalpy.
Note that this function uses the full TEOS-10 Gibbs function (i.e. the
sum of the IAPWS-09 and IAPWS-08 Gibbs functions, see the TEOS-10
Manual, IOC et al. (2010)).

## INPUT:

SA = Absolute Salinity [ g/kg ]
t = in-situ temperature (ITS-90) [ deg C ]
p = sea pressure [ dbar ]
( i.e. 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:

dynamic_enthalpy_t_exact = dynamic enthalpy [ J/kg ]

## EXAMPLE:

SA = [34.7118; 34.8915; 35.0256; 34.8472; 34.7366; 34.7324;]
t = [28.8099; 28.4392; 22.7862; 10.2262; 6.8272; 4.3236;]
p = [ 10; 50; 125; 250; 600; 1000;]

dynamic_enthalpy_t_exact = gsw_dynamic_enthalpy_t_exact(SA,t,p)

dynamic_enthalpy_t_exact =

1.0e+003 *

0.097865449396471
0.489162352983796
1.220503275034236
2.433717128612909
5.833832877965065
9.711354616402991

## 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 appendix A.11 of this TEOS-10 Manual.

Young, W.R., 2010: Dynamic enthalpy, Conservative Temperature, and the
seawater Boussinesq approximation. Journal of Physical Oceanography,
40, 394-400.

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