# gsw_Helmholtz_energy_t_exact

    Helmholtz energy of seawater

## Contents

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

## USAGE:

    Helmholtz_energy_t_exact = gsw_Helmholtz_energy_t_exact(SA,t,p)

## DESCRIPTION:

    Calculates the Helmholtz energy of seawater

    Click for a more detailed description of Helmholtz
    energy.

## 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:

    Helmholtz_energy_t_exact = Helmholtz energy                     [ J/kg ]

## 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;]

    Helmholtz_energy_t_exact = gsw_Helmholtz_energy_t_exact(SA,t,p)

    Helmholtz_energy_t_exact =

    1.0e+003 *

      -5.985582882093846
      -5.830818452241629
      -3.806966178407540
      -0.877663694207387
      -0.462170339049288
      -0.245504072049327

## AUTHOR:

    Trevor McDougall         [ help@teos-10.org ]

## VERSION NUMBER:

    3.02 (17th November, 2012)

## 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 2.13 of this TEOS-10 Manual.

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