[MITgcm-support] filter for cubesphere-gridr-corners

[Andrea Molod]

hi yuan,

this issue at the corners was addressed by jean-michel by changing
the locations of some of the corner grid points and by changing
some options in the numerics. it only showed up as something we could see 
in atmospheric simulations with no stationary waves to speak of. his 
change made the 'corner' issue go away for us.

i don't know if you have the 'new' tile files or not, but you can
find them for sure in the fizhi aqualev20 verification experiment.
just check to see if they match what you are using, if not, grab
them. also take a look in the 'data' file for this experiment, you
will see:
  useAbsVorticity=.TRUE.,
  SadournyCoriolis=.TRUE.,
  selectKEscheme=3,
hope this makes the need for a 'corner filter' go away....
good luck.
andrea

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Andrea M. Molod, PhD.
Department of Earth, Atmospheric & Planetary Sciences
MIT
Tel: (617) 253-5458, Email: amolod at mit.edu
WWW:http://paoc.mit.edu/paoc/people/person.asp?position=Postdoc&who=molod
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On Fri, 22 Sep 2006, Yuan Lian wrote:

> Hi, Ed
>
> I am trying to add an extra corner filter (like zonal filter as a polar 
> filter) to the eight cubesphere-grid corners. I am thinking to add this 
> filter as a subroutine so its strength is adjustable. The reason why I will 
> do this is because I found the corner effect is very obvious in my 
> atmospheric model. Could you please give me some instructions to do this? 
> Thanks a lot!
>
> Yuan
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