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Interpolation/

angle.pro

north stereographic polar projection Compute angles between grid lines and direction of the North (fom angle.F,v 2.2 in OPA8.2)

Routine summary

result = fsnspp(plam, pphi, DOUBLE=DOUBLE)
angle, fileocemesh, gcosu, gsinu, gcosv, gsinv, gcost, gsint, IODIRECTORY=IODIRECTORY, DOUBLE=DOUBLE

 

fsnspp Interpolation

result = fsnspp(plam, pphi, DOUBLE=DOUBLE)

Return value

gsinu,gcosu : sinus and cosinus of the angle gsinv,gcosv between north-south direction gsint,gcost and the j-direction of the mesh

Parameters

plam        in required

pphi        in required

Keywords

DOUBLE        default: 0

use double precision (default is float)

Version history

Version

$Id: angle.pro 157 2006-08-21 09:01:50Z navarro $

History

Original : 96-07 (O. Marti) 98-06 (G. Madec) Feb 2005: IDL adaptation S. Masson

Known issues

Restrictions

to compute the lateral boundary conditions, we assume that: (1) the first line is similar to the second line => gcosu[*, 0] = gcosu[*, 1] => gsinu[*, 0] = gsinu[*, 1] (2) the grid follows OPA x periodicity rule, first column is equal to the next to last column => gcosv[0, *] = gcosv[jpj-2, *] => gsinv[0, *] = gsinv[jpj-2, *]

 


angle

angle, fileocemesh, gcosu, gsinu, gcosv, gsinv, gcost, gsint, IODIRECTORY=IODIRECTORY, DOUBLE=DOUBLE

Parameters

fileocemesh        in required

a netcdf file that contains (at least): glamu, gphiu: longitudes and latitudes at U-points glamv, gphiv: longitudes and latitudes at V-points glamf, gphif: longitudes and latitudes at F-points

gcosu        in required

gsinu        in required

gcosv        in required

gsinv        in required

gcost        in required

gsint        in required

Keywords

IODIRECTORY       

the directory path where is located fileocemesh

DOUBLE        default: 0

use double precision (default is float)

 


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