## Contents

## USAGE:

rho_CT_exact = gsw_rho_CT_exact(SA,CT,p)

## DESCRIPTION:

Calculates in-situ density from Absolute Salinity and Conservative
Temperature.

Note that potential density with respect to reference pressure, p_ref, is
obtained by calling this function with the pressure argument being p_ref
(i.e. "gsw_rho_CT_exact(SA,CT,p_ref)").

Note that this function uses the full Gibbs function. There is an
alternative to calling this function, namely gsw_rho(SA,CT,p),
which uses the computationally efficient 75-term expression for specific
volume in terms of SA, CT and p (Roquet et al., 2015).

## INPUT:

SA = Absolute Salinity [ g/kg ]
CT = Conservative Temperature [ deg C ]
p = sea pressure [ dbar ]
( i.e. absolute pressure - 10.1325 dbar )

SA & CT need to have the same dimensions.
p may have dimensions 1x1 or Mx1 or 1xN or MxN, where SA & CT are MxN.

## OUTPUT:

rho_CT_exact = in-situ density [ kg/m^3 ]

## 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;]
p = [ 10; 50; 125; 250; 600; 1000;]

rho_CT_exact = gsw_rho_CT_exact(SA,CT,p)

rho_CT_exact =

1.0e+003 *

1.021840179764021
1.022262699103554
1.024427709285783
1.027790199901620
1.029837716779620
1.032002400877215

## AUTHOR:

Trevor McDougall and Paul Barker [ 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.
See Eqn. (2.8.2) of this TEOS-10 Manual.

Roquet, F., G. Madec, T.J. McDougall, P.M. Barker, 2015: Accurate
polynomial expressions for the density and specifc volume of seawater
using the TEOS-10 standard. Ocean Modelling.

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