## Contents

## USAGE:

spiciness0 = spiciness0(SA,CT)

## DESCRIPTION:

Calculates spiciness from Absolute Salinity and Conservative
Temperature at a pressure of 0 dbar, as described by McDougall and
Krzysik (2015). This routine is based on the computationally-efficient
expression for specific volume in terms of SA, CT and p (Roquet et al.,
2015).

Note that this 75-term equation has been fitted in a restricted range of
parameter space, and is most accurate inside the "oceanographic funnel"
described in McDougall et al. (2003). The GSW library function
"gsw_infunnel(SA,CT,p)" is avaialble to be used if one wants to test if
some of one's data lies outside this "funnel".

## INPUT:

SA = Absolute Salinity [ g/kg ]
CT = Conservative Temperature [ deg C ]

SA & CT need to have the same dimensions.

## OUTPUT:

spiciness = spiciness referenced to a pressure of 0 dbar,
i.e. the surface

## EXAMPLE:

SA = [34.7118; 34.8915; 35.0256; 34.8472; 34.7366; 34.7324;]
CT = [28.8099; 28.4392; 22.7862; 10.2262; 6.8272; 4.3236;]

spiciness0 = gsw_spiciness0(SA,CT)

spiciness0 =

5.728998558542941
5.749940496782486
4.163547112671111
1.069362556641764
0.426428274444305
0.089725188494086

## AUTHOR:

Oliver Krzysik and Trevor McDougall [ help@teos-10.org ]

## VERSION NUMBER:

3.05 (16th February, 2015)

## REFERENCES:

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.

McDougall, T.J., D.R. Jackett, D.G. Wright and R. Feistel, 2003:
Accurate and computationally efficient algorithms for potential
temperature and density of seawater. *J. Atmosph. Ocean. Tech.*, **20**,
pp. 730-741.

McDougall, T.J., and O.A. Krzysik, 2015: Spiciness. *Journal of
Marine Research*, **73**, 141-152.

Roquet, F., G. Madec, T.J. McDougall and P.M. Barker, 2015: Accurate
polynomial expressions for the density and specific volume of seawater
using the TEOS-10 standard. *Ocean Modelling*, **90**, pp. 29-43.
http://dx.doi.org/10.1016/j.ocemod.2015.04.002

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