[MITgcm-support] tidal forcing and wind forcing

[Dimitris Menemenlis]

Hi Himansu, I don't know why EXP_1 and EXP_2 are the same in your experiments.
Would you be able to use more well-tested MITgcm methods of applying tidal forcing,
i.e., using open boundary horizontal velocity for small regional domains or surface
atmospheric pressure forcing for larger domains, or does your particular problem
require that tidal forcing be applied as a body force everywhere?

Dimitris Menemenlis

On Sep 4, 2014, at 3:24 AM, Himansu Pradhan <oceancalling at gmail.com> wrote:

> Hi MITgcm users,
> 
> 
> 
> I am giving tidal forcing to the model in  code/external_forcing.F in its momentum equations i.e. by adding tidal forcing terms to "gU" and "gV". Thus the model simulations shows oscillations in tidal frequency in the density/velocity field representing internal waves. This is fine.  (say EXP_1)
> 
> 
> 
> But, when i prescribe "wind stress" to the model (in input/data.exf) along with the background tidal forcing (in code/external_forcing.F) , the simulations give the effect only due to tide (say EXP_2). The wind driven circulation is not represented  in the output ???  The model results for EXP_1 and EXP_2 are same !!!!!!!
> 
> 
> 
> note:
> 
> (i) to see the wind driven circulation i average velovity field for 5 to 7 days. 
> 
> 
> 
> (ii) The wind driven circulation is very well represented daily and monthly basis  ( when daily/monthly winds are given as input to the model) , when tidal forcing are not added in the momentum equations.
> 
> 
> 
> Himansu
> 
> India
> 
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