[MITgcm-support] arbitrary tiles in cube-sphere grid

[Martin Losch]

Hi Yuan,

I may be wrong about this, but I think that with the cube-sphere grid you need to put all tiles "in a row", so instead of nPx=12, nPy=4, you need to have nPx=48, nPy=1

I don't know anything about the Shapiro filter.

Martin

On Mar 24, 2012, at 6:54 AM, Yuan Lian wrote:

> Hi,
> 
> I have a question about setting arbitrary tiles in cube-sphere grid. I don't have any problems using the regular six-tile configuration. However, there are "patchy" values (more obvious in vertical or meridional velocity) near the corners of subtiles if I use the following SIZE.h
> 
>      PARAMETER (
> &           sNx =   8,
> &           sNy =   4,
> &           OLx =   4,
> &           OLy =   4,
> &           nSx =   1,
> &           nSy =   1,
> &           nPx =  12,
> &           nPy =   4,
> &           Nx  = sNx*nSx*nPx,
> &           Ny  = sNy*nSy*nPy,
> &           Nr  =  56)
> 
> It appears that either EXCH2 routine or Shapiro filter does not work properly in this case.
> 
> Does anyone also notice the problem?
> 
> Best regards,
> Yuan
> 
> 
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Martin Losch
Martin.Losch at awi.de