[Mitgcm-support] Re: Fourier filter

[mitgcm-support at dev.mitgcm.org]

Sounds odd to me. 
I thought it was switched off altogether below
FFTflitLatLo

Jean-Michel Campin wrote:
> 
> Hello,
> 
> I've tried to apply the Fourier filter to the new input data files,
> starting with the topography.
> I found that the FFT modifies the topography even in the low
> latitude where it is not supposed to be applied.
> The magnitude of this effect is relatively small (20 m)
> but not negligable.
> 
> Is this "well known" or do I have to check carefully what I have done ?
> 
> See you,
> 
> Jean-Michel