[MITgcm-support] Tidal forcing with Orlanski boundary conditions.

[Hanut Vemulapalli]

Hi all,

I am trying to simulate gravity waves produced by a gaussian topography. I
have a 2D simulation with unit depth in the y-coordinate. I am giving tidal
forcing to the model in code/external_forcing.F by adding the following
lines .

DO j=0,sNy+1
  DO i=1,sNx+1
          gU(i,j,kLev,bi,bj) = gU(i,j,kLev,bi,bj) +
0.02*0.00014*cos(0.00014*myTime)
  ENDDO
ENDDO


I am prescribing Orlanski boundary condition at the east and west
boundaries.
However, the velocity magnitude tends to very small values of the order
1E-8 once I prescribe open boundary condition at the east and west
boundaries. Even increasing the magnitude of tidal forcing to large values
gives the same values of velocity magnitude. Any help regarding this would
be greatly appreciated.

Thanking You
Hanut
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