gsw_cndr_from_SP
conductivity ratio from Practical Salinity
Contents
USAGE:
R = gsw_cndr_from_SP(SP,t,p)
DESCRIPTION:
Calculates conductivity ratio (R) from (SP,t,p) using PSS-78. Note that
the PSS-78 algorithm for Practical Salinity is only valid in the
range 2 < SP < 42.
INPUT:
SP = Practical Salinity (PSS-78) [ unitless ]
t = in-situ temperature (ITS-90) [ deg C ]
p = sea pressure [ dbar ]
(ie. absolute pressure - 10.1325 dbar)
SP & t need to have the same dimensions.
p may have dimensions 1x1 or Mx1 or 1xN or MxN, where SP & t are MxN.
OUTPUT:
R = conductivity ratio [ unitless ]
EXAMPLE:
SP = [34.5487; 34.7275; 34.8605; 34.6810; 34.5680; 34.5600;]
t = [28.7856; 28.4329; 22.8103; 10.2600; 6.8863; 4.4036;]
p = [ 10; 50; 125; 250; 600; 1000;]
R = gsw_cndr_from_SP(SP,t,p)
R =
1.314550020542723
1.312303341629415
1.180742166518467
0.888626530644618
0.816903053491821
0.768666416740220
AUTHOR:
Phil Morgan [ help_gsw@csiro.au ]
MODIFIED:
25th June, 1999. Lindsay Pender, Fixed transpose of row vectors.
12th December, 2003. Lindsay Pender, Converted to ITS-90.
16th August, 2010. Paul Barker, Regrouped.
VERSION NUMBER:
2.0 (16th August, 2010)
REFERENCES:
Fofonoff, P. and R.C .Millard, Jr, 1983: Algorithms for computation of
fundamental properties of seawater, 1983. Unesco Tech. Pap. in Mar.
Sci., No. 44, 53 pp.
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 E of this TEOS-10 Manual.
The software is available from http://www.TEOS-10.org