# gsw_dynamic_enthalpy_CT_exact

    dynamic enthalpy of seawater

## Contents

- USAGE:
- DESCRIPTION:
- INPUT:
- OUTPUT:
- EXAMPLE:
- AUTHOR:
- VERSION NUMBER:
- REFERENCES:

## USAGE:

    dynamic_enthalpy_CT_exact  =  gsw_dynamic_enthalpy_CT_exact(SA,CT,p)

## DESCRIPTION:

    Calculates the dynamic enthalpy of seawater from Absolute Salinity and
    Conservative Temperature and pressure.  Dynamic enthalpy is defined
    as enthalpy minus potential enthalpy (Young, 2010).

    Note that this function uses the full Gibbs function.  There is an
    alternative to calling this function, namely gsw_dynamic_enthalpy(SA,CT,p),
    which uses the computationally-efficient 48-term expression for density
    in terms of SA, CT and p (McDougall et al., 2011).

    Click for a more detailed description of dynamic enthalpy.

## INPUT:

    SA  =  Absolute Salinity                                        [ g/kg ]
    CT  =  Conservative Temperature                                [ 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:

    dynamic_enthalpy_CT_exact  =  dynamic enthalpy                  [ J/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;]

    dynamic_enthalpy_CT_exact = gsw_dynamic_enthalpy_CT_exact(SA,CT,p)

    dynamic_enthalpy_CT_exact =

     1.0e+003 *

       0.097864674355907
       0.489161352534808
       1.220511534264282
       2.433731128482235
       5.833880619025073
       9.711444581337858

## AUTHOR:

    Trevor McDougall and Paul Barker.                 [ help@teos-10.org ]

## VERSION NUMBER:

    3.01 (18th May, 2011)

## 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.

    McDougall T.J., P.M. Barker, R. Feistel and D.R. Jackett, 2011:  A
     computationally efficient 48-term expression for the density of
     seawater in terms of Conservative Temperature, and related properties
     of seawater.  To be submitted to Ocean Science Discussions.

    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