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
pphi
Keywords
DOUBLE
Version history
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, *]