gsw_Fdelta

ratio of Absolute to Preformed Salinity, minus 1

Contents

USAGE:

Fdelta = gsw_Fdelta(p,long,lat)

DESCRIPTION:

Calculates Fdelta from the Absolute Salinity Anomaly 
Ratio (SAAR). It finds SAAR by calling the function
"gsw_SAAR(p,long,lat") and then simply calculates Fdelta from 

  Fdelta = (1 + r1)SAAR/(1 - r1*SAAR)
         = (SA/Sstar) - 1 

with r_1 being the constant 0.35 based on the work of Pawlowicz
et al. (2011). Note that since SAAR is everywhere less than 
0.001 in the global ocean, Fdelta is only slighty different to 
"1.35 x SAAR".
TEOS-10 
Click for a more detailed description of the 
ratio of Absolute to Preformed Salinity, minus 1
(See the description of Absolute Salinity Amomaly Ratio).

INPUT:

p     =  sea pressure                                           [ dbar ]
         ( i.e. absolute pressure - 10.1325 dbar )
long  =  longitude in decimal degrees                     [ 0 ... +360 ]
                                                    or [ -180 ... +180 ]
lat   =  latitude in decimal degrees north               [ -90 ... +90 ]
p, long & lat need to have the same dimensions.

OUTPUT:

Fdelta = ratio of Absolute to Preformed Salinity, minus 1   [ unitless ]

EXAMPLE:

p =    [   10;   50;  125;  250;  600; 1000;]
lat =  [    4;    4;    4;    4;    4;    4;]
long = [  188;  188;  188;  188;  188;  188;]
Fdelta = gsw_Fdelta(p,long,lat)
Fdelta = 
  1.0e-003 *
   0.006472309923452
   0.010352848168433
   0.025541937543450
   0.104348729347986
   0.218678084205081
   0.365415366571266

AUTHOR:

Trevor McDougall and Paul Barker       [ help@teos-10.org ]

VERSION NUMBER:

3.01 (23rd May, 2011)

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 http://www.TEOS-10.org
  See section 2.5 of this TEOS-10 Manual.
McDougall, T.J., D.R. Jackett and F.J. Millero, 2010: An algorithm
 for estimating Absolute Salinity in the global ocean.  Submitted to
 Ocean Science. A preliminary version is available at Ocean Sci. Discuss.,
 6, 215-242.
 http://www.ocean-sci-discuss.net/6/215/2009/osd-6-215-2009-print.pdf
The software is available from http://www.TEOS-10.org