gsw_pt_from_pot_enthalpy_ice_poly

potential temperature of ice with a reference sea 
pressure of zero dbar from the potential enthalpy
of ice (polynomial)

Contents

USAGE:

pt0_ice = gsw_pt_from_pot_enthalpy_ice_poly(pot_enthalpy_ice)

DESCRIPTION:

Calculates the potential temperature of ice from the potential enthalpy 
of ice.  The reference sea pressure of both the potential temperature 
and the potential enthalpy is zero dbar. This is a compuationally 
efficient polynomial fit to the potential enthalpy of ice.

INPUT:

pot_enthalpy_ice  =  potential enthalpy of ice                  [ J/kg ]

OUTPUT:

pt0_ice   =  potential temperature of ice                      [ deg C ]
        with reference sea pressure (pr) = 0 dbar.  
Note. The reference sea pressure of the output, pt, is zero dbar.

EXAMPLE:

pot_enthalpy_ice = [-3.5544e5; -3.6033e5; -3.5830e5; -3.5589e5; -3.4948e5; -3.4027e5;]
pt0_ice = gsw_pt_from_pot_enthalpy_ice_poly(pot_enthalpy_ice)
pt0_ice =
  -10.733085986035007
  -13.167396204945987
  -12.154204137867396
  -10.956201046447006
   -7.794963341294590
   -3.314907552013722

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.
McDougall, T.J., P.M. Barker, R. Feistel and B.K. Galton-Fenzi, 2014: 
 Melting of Ice and Sea Ice into Seawater and Frazil Ice Formation. 
 Journal of Physical Oceanography, 44, 1751-1775.
The software is available from http://www.TEOS-10.org