# gsw_SP_salinometer

**Practical Salinity from a salinometer**

## Contents

## USAGE:

SP = gsw_SP_salinometer(Rt,t)

## DESCRIPTION:

Calculates Practical Salinity from salinometer (Rt), 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:

Rt = Conductivity ratio [ unitless ]
t = in-situ temperature (ITS-90) [ deg C ]

t may have dimensions 1x1 or Mx1 or 1xN or MxN, where Rt is MxN.

## OUTPUT:

SP = Practical Salinity on the PSS-78 scale [ unitless ]

## EXAMPLE:

Rt = [ 0.9345; 0.95123; 0.91807; 0.8886; 0.8169; 0.6687;]
t = [28.7856; 28.4329; 22.8103; 10.2600; 6.8863; 4.4036;]

SP = gsw_SP_salinometer(Rt,t)

SP =

32.431728787558541
33.085035719966307
31.800791917322833
30.692490757036179
27.979281308696116
22.474597460508491

## AUTHOR:

Trevor McDougall and Paul Barker [ help@teos-10.org ]

## VERSION NUMBER:

3.05 (16th February, 2015)

## REFERENCES:

Hill, K.D., T.M. Dauphinee and D.J. Woods, 1986: The extension of the
Practical Salinity Scale 1978 to low salinities. IEEE J. Oceanic Eng.,
OE-11, 1, 109 - 112.

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.

Unesco, 1983: Algorithms for computation of fundamental properties of
seawater. Unesco Technical Papers in Marine Science, 44, 53 pp.

The software is available from http://www.TEOS-10.org