gsw_temps_maxdensity

temperatures of maximum density of seawater

Contents

USAGE:

[t_maxden, pt_maxden, CT_maxden] = gsw_temps_maxdensity(SA,p)

DESCRIPTION:

Calculates the temperatures of maximum density of seawater. This
function returns the in-situ, potential, and Conservative temperatures
at which the density of seawater is a maximum, at given Absolute
Salinity, SA, and sea pressure, p (in dbar).
TEOS-10
Click for a more detailed description of calculating the
temperatures of maximum density.

INPUT:

SA =  Absolute Salinity                                         [ g/kg ]
p  =  sea pressure                                              [ dbar ]
      (ie. absolute pressure - 10.1325 dbar)
p may have dimensions 1x1 or Mx1 or 1xN or MxN, where SA is MxN.

OUTPUT:

t_maxden   =  In-situ temperature at which the density of seawater
              is a maximum for given Absolute Salinity and pressure,
              measured on the ITS-90 temperature scale.        [ deg C ]
pt_maxden  =  potential temperature at which the density of seawater
              is a maximum for given Absolute Salinity and pressure.
              This is the potential temperature referenced to a sea
              pressure of 0 dbar.                              [ deg C ]
CT_maxden  =  Conservative Temperature at which the density of
              seawater is a maximum for given Absolute Salinity
              and pressure.                                    [ deg C ]

EXAMPLE:

SA = [34.7118; 34.8915; 35.0256; 34.8472; 34.7366; 34.7324;]
p =  [     10;      50;     125;     250;     600;    1000;]
[t_maxden, pt_maxden, CT_maxden] = gsw_temps_maxdensity(SA,p)
t_maxden =
-3.725008913916380
-3.853714292562061
-4.051433177642653
-4.295542513200469
-5.074746618871896
-6.011701971231014
pt_maxden =
-3.725007817485227
-3.853686822871752
-4.051260804552126
-4.294848434851046
-5.070673022022400
-6.000138120066936
CT_maxden =
-3.720779524452287
-3.849111898670119
-4.046292804691113
-4.290063909787930
-5.065854290972595
-5.995131932081709

AUTHOR:

Trevor McDougall & Paul Barker     [ help_gsw@csiro.au ]

VERSION NUMBER:

2.0 (26th August, 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 3.42 of this TEOS-10 Manual.
The software is available from http://www.TEOS-10.org