gsw_SP_from_cndr
Practical Salinity from conductivity ratio
Contents
USAGE:
SP = gsw_SP_from_cndr(R,t,p)
DESCRIPTION:
Calculates Practical Salinity from conductivity ratio (R), using the
PSS-78 algorithm. Note that the PSS-78 algorithm for Practical Salinity
is only valid in the range 2 < SP < 42. The output, SP, of this
function is constrained to be non-negative.
INPUT:
R = Conductivity ratio [ unitless ]
t = in-situ temperature (ITS-90) [ deg C ]
p = sea pressure [ dbar ]
( ie. absolute pressure - 10.1325 dbar )
t & p may have dimensions 1x1 or Mx1 or 1xN or MxN, where R is MxN.
OUTPUT:
SP = Practical Salinity on the PSS-78 scale [ unitless ]
EXAMPLE:
R = [ 1.3145; 1.3123; 1.1807; 0.8886; 0.8169; 0.7687;]
t = [28.7856; 28.4329; 22.8103; 10.2600; 6.8863; 4.4036;]
p = [ 10; 50; 125; 250; 600; 1000;]
SP = gsw_SP_from_cndr(R,t,p)
SP =
34.547219254816596
34.727400381174370
34.859100827188712
34.679845200922003
34.567856165219020
34.561679175326645
AUTHOR:
17th April 1993. Phil Morgan [ help_gsw@csiro.au ]
MODIFIED:
12th December 2003. Lindsay Pender, Converted to ITS-90.
28th July 2010. by Paul Barker
VERSION NUMBER:
2.0 (3rd August, 2010)
REFERENCES:
Fofonoff, P. and R.C. Millard Jr. 1983: Algorithms for computation of
fundamental properties of seawater. Unesco Tech. Pap. in Mar. Sci., 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