Buoy System Handbook
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SBE Salinity

Overview

Salinity is one of the primary properties of sea water and is a function of conductivity, temperature, and the pressure inferred from the sensor depth. The reader is encouraged to consult [Fotonoff] and [Millero] for algorithmic details. This parameter is computed for SBE37s, SBE16s, and SBE 16-03s.

Input

  1. conductivity ratio, R = C(S,T,P)/C(35,15,0) [no units]. C(S,T,P) is the conductivity parameter.

  2. temperature: ° C (IPTS-68)

  3. pressure: units of db, computed from the depth.

Ancillary Requirements

None

MATLAB m-file

sw_salt.m
sw_sals.m
sw_salrt.m
sw_salrp.m

A detailed collection of MATLAB scripts written by Phil Morgan are available from CSIRO for this purpose and are listed in the appendix.

Output

salinity [psu (PSS-78)]

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SBE Transmissivity, Beam Attenuation (tranmissivity, c)UpSBE Sigma T (sigma_t)