[MITgcm-support] cubed sphere for Atmospheric models

[Yuan Lian]

Hi, Chris,

I am doing an atmospheric model for uranus. I did change the radius when I
generate the cubed sphere.

rotationPeriod=6.2064E4,
gravity=11.0,
rSphere=24766.E3,
atm_cp=13000

I keep the others are the same as Earth parameters.

Now I guess I didn't generate the grids properly. Here are what I did to
generate cubed sphere:

1. use gengrid_fn.m to generate all neccessary *.bin files.
2. use ocnvertMITgrid to generate *.mitgrid files (I used 6 tiles).
3. use driver.m to generate  w2_e2setup.F and W2_EXCH2_TOPOLOGY.h, then I
copied these two files to test/code directory.

I compiled the code and ran, it turns out that the code won't work well
with all the files I generated. hs94.cs-64x64x5 can run but gives some
weird results which I didn't notice.

I will keep working on this and see if I can figure out where I did wrong.
And I will post a detailed description here if I couldn't work it out.

Thanks a lot!

-Yuan

On Mon, 20 Dec 2004, chris hill wrote:

> Yuan,
>
>  Which atmospheric physics are you are using.
>
> Thanks,
>
> Chris
> On Mon, 2004-12-20 at 18:02, Yuan Lian wrote:
> > Hi,
> >
> > I had some problems to make cubed sphere working properly for atmospheric
> > models. I can run hs94.cs-32x32x5 without any problems, even
> > hs94.cs-64x64x5 will work. I tried to run another atmospheric model which
> > works fine with spherical coordinates. However extreme values came out at
> > second time step if I use cubed sphere. The resolution I used is 32X32X25.
> >
> > I switched spherical coordinates to cubed sphere since I thought cube
> > sphere will handle the polar regions better. I am wondering if anyone
> > had the same experience. Should the cubed sphere have less numerical
> > probelms than spherical coordinates?
> >
> > Thanks for all the help!
> >
> > -Yuan
> >
> > _______________________________________________
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> > MITgcm-support at mitgcm.org
> > http://dev.mitgcm.org/mailman/listinfo/mitgcm-support
>
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