gsw_grav

Gravitational acceleration

Contents

USAGE:

grav = gsw_grav(lat,{p})

DESCRIPTION:

Calculates acceleration due to gravity as a function of latitude and as
a function of pressure in the ocean.
TEOS-10 
Click for a more detailed description of the
gravitational acceleration.

INPUT:

lat  =  latitude in decimal degress north                [ -90 ... +90 ]
OPTIONAL:  
p    =  sea pressure                                            [ dbar ]
          (ie. absolute pressure - 10.1325 dbar)  
(If pressure is not given then it is assumed that pressure = 0 dbar).
p (if provided) may have dimensions 1x1 or Mx1 or 1xN or MxN,
where lat is MxN.)

OUTPUT:

grav  =  gravitational acceleration                            [ m/s^2 ]

EXAMPLE:

lat = [ -90; -60; -30; 0;]
p   =    0;
grav = gsw_grav(lat,p)
Note. If the pressure is zero then the following is also valid
grav = gsw_grav(lat)
grav =
   9.832186205884799
   9.819178859991149
   9.793249257048750
   9.780327000000000

AUTHOR:

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

VERSION NUMBER:

3.01  (13th 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 the TEOS-10 web site.
  See appendix D of this TEOS-10 Manual.
Moritz (2000) Goedetic reference system 1980. J. Geodesy,74,128-133.
Saunders, P.M., and N.P. Fofonoff (1976) Conversion of pressure to
 depth in the ocean. Deep-Sea Res.,pp. 109 - 111.
The software is available from http://www.TEOS-10.org