gsw_pot_rho

potential density

Contents

USAGE:

pot_rho = gsw_pot_rho(SA,t,p,pr)

DESCRIPTION:

Calculates potential density of seawater.  Note. This function
outputs potential density, not potential density anomaly; that is,
1000 kg/m^3 is not subtracted.
TEOS-10
Click for a more detailed description of potential
density.

INPUT:

SA  =  Absolute Salinity                                        [ g/kg ]
t   =  in-situ temperature (ITS-90)                            [ deg C ]
p   =  sea pressure                                             [ dbar ]
       ( ie. absolute pressure - 10.1325 dbar )
pr  =  reference pressure                                       [ dbar ]
       ( ie. reference absolute pressure - 10.1325 dbar )
SA & t need to have the same dimensions.
p & pr may have dimensions 1x1 or Mx1 or 1xN or MxN, where SA & t
are MxN

OUTPUT:

pot_rho  =  potential density                                 [ kg/m^3 ]
            (not potential density anomaly)

EXAMPLE:

SA = [34.7118; 34.8915; 35.0256; 34.8472; 34.7366; 34.7324;]
t =  [28.7856; 28.4329; 22.8103; 10.2600;  6.8863;  4.4036;]
p =  [     10;      50;     125;     250;     600;    1000;]
pr  = 0;
pot_rho = gsw_pot_rho(SA,t,p,pr)
pot_rho =
1.0e+003 *
 1.021798145811089
 1.022052484416980
 1.023893583651958
 1.026667621124443
 1.027107230868492
 1.027409631264134

AUTHOR:

David Jackett, Trevor McDougall and Paul Barker [ help_gsw@csiro.au ]

VERSION NUMBER:

2.0 (23rd July, 2010)

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 section 3.4 of this TEOS-10 Manual.
The software is available from http://www.TEOS-10.org