Contents
USAGE:
melting_ice_SA_CT_ratio = gsw_melting_ice_SA_CT_ratio_poly(SA,CT,p,t_Ih)
DESCRIPTION:
Calculates the ratio of SA to CT changes when ice melts into seawater.
It is assumed that a small mass of ice melts into an infinite mass of
seawater. Because of the infinite mass of seawater, the ice will always
melt.
The output, melting_seaice_SA_CT_ratio, is dSA/dCT rather than dCT/dSA.
This is done so that when SA = 0, the output, dSA/dCT is zero whereas
dCT/dSA would be infinite.
INPUT:
SA = Absolute Salinity of seawater [ g/kg ]
CT = Conservative Temperature of seawater (ITS-90) [ deg C ]
p = sea pressure [ dbar ]
( i.e. absolute pressure - 10.1325 dbar )
t_Ih = in-situ temperature of the ice at pressure p (ITS-90) [ deg C ]
SA, CT and t_Ih must have the same dimensions.
p may have dimensions 1x1 or Mx1 or 1xN or MxN, where SA, CT and t_Ih
are MxN.
OUTPUT:
melting_ice_SA_CT_ratio = the ratio of SA to CT changes when ice melts
into a large mass of seawater
EXAMPLE:
SA = [34.7118; 34.8915; 35.0256; 34.8472; 34.7366; 34.7324;]
CT = [ 3.7856; 3.4329; 2.8103; 1.2600; 0.6886; 0.4403;]
p = [ 10; 50; 125; 250; 600; 1000;]
t_Ih = [-10.7856; -13.4329; -12.8103; -12.2600; -10.8863; -8.4036;]
melting_ice_SA_CT_ratio = gsw_melting_ice_SA_CT_ratio_poly(SA,CT,p,t_Ih)
melting_ice_SA_CT_ratio =
0.373840908629278
0.371878512745054
0.377104658031030
0.382777681212224
0.387133812279563
0.393947267481204
AUTHOR:
Trevor McDougall & 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