# gsw_SP_salinometer

    Practical Salinity from a salinometer

## Contents

- USAGE:
- DESCRIPTION:
- INPUT:
- OUTPUT:
- EXAMPLE:
- AUTHOR:
- VERSION NUMBER:
- REFERENCES:

## 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.

    Click for a more detailed description of calculating
    Practical Salinity from salinometer.

## 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:

    3.02 (17th November, 2012)

## 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