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function dens = sw_smow(T) |
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% SW_SMOW Denisty of standard mean ocean water (pure water) |
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%========================================================================= |
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% SW_SMOW $Id: sw_smow.m,v 1.1 2003/12/12 04:23:22 pen078 Exp $ |
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% Copyright (C) CSIRO, Phil Morgan 1992. |
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% |
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% USAGE: dens = sw_smow(T) |
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% |
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% DESCRIPTION: |
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% Denisty of Standard Mean Ocean Water (Pure Water) using EOS 1980. |
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% |
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% INPUT: |
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% T = temperature [degree C (ITS-90)] |
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% |
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% OUTPUT: |
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% dens = density [kg/m^3] |
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% |
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% AUTHOR: Phil Morgan 92-11-05, Lindsay Pender (Lindsay.Pender@csiro.au) |
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% |
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% DISCLAIMER: |
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% This software is provided "as is" without warranty of any kind. |
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% See the file sw_copy.m for conditions of use and licence. |
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% |
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% REFERENCES: |
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% Unesco 1983. Algorithms for computation of fundamental properties of |
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% seawater, 1983. _Unesco Tech. Pap. in Mar. Sci._, No. 44, 53 pp. |
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% UNESCO 1983 p17 Eqn(14) |
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% |
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% Millero, F.J & Poisson, A. |
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% INternational one-atmosphere equation of state for seawater. |
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% Deep-Sea Research Vol28A No.6. 1981 625-629. Eqn (6) |
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%========================================================================= |
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% Modifications |
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% 99-06-25. Lindsay Pender, Fixed transpose of row vectors. |
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% 03-12-12. Lindsay Pender, Converted to ITS-90. |
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%---------------------- |
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% CHECK INPUT ARGUMENTS |
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%---------------------- |
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% TEST INPUTS |
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if nargin ~= 1 |
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error('sw_smow.m: Only one input argument allowed') |
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end %if |
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%---------------------- |
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% DEFINE CONSTANTS |
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%---------------------- |
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a0 = 999.842594; |
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a1 = 6.793952e-2; |
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a2 = -9.095290e-3; |
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a3 = 1.001685e-4; |
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a4 = -1.120083e-6; |
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a5 = 6.536332e-9; |
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T68 = T * 1.00024; |
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dens = a0 + (a1 + (a2 + (a3 + (a4 + a5*T68).*T68).*T68).*T68).*T68; |
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return |
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%-------------------------------------------------------------------- |
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