[MITgcm-support] variable gravity

[Jean-Michel Campin]

Hi Angela,

I don't remember someone who implemented variable gravity in MITgcm
with presure coordinate (you are using p*, right ?).
Yohai made the gravity function of height, but it was with height
coordinate (z).
I don't think it should be too difficult to get the 1rst order effect
implemented (a type of mass coordinate rather than pressure coordinate)
but would need to think about the list of S/R to change.
Could continue the discussion off the list. 

Cheers,
Jean-Michel

On Mon, Jan 17, 2011 at 12:29:12PM -0500, Angela Marie Zalucha wrote:
> Hello,
>
> I am currently working on applying the MIT GCM to Pluto's atmosphere.  
> Pluto's atmosphere is very extended compared with the its solid body  
> radius, and so the assumption of constant gravitational acceleration with 
> height becomes no longer a good approximation.  i.e., I need the 1/r^2  
> dependence.  I was wondering if anyone has made this modification and if  
> not how easy it would be to do.
>
> I use the atmosphere model in r* coordinates.
>
> Thanks,
>   Angela
>
>
>
> _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-
> Angela Zalucha, Ph.D.
> Postdoctoral Associate
> Department of Earth, Atmospheric,
>   and Planetary Sciences
> Massachusetts Institute of Technology
>
> Office located at Southwest Research Institute
> 1050 Walnut Street, Suite 300
> Boulder, CO 80302
> USA
> (720) 208-7211
>
>
> http://web.mit.edu/azalucha/www/index.html
> _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-
>
>
>
>
> _______________________________________________
> MITgcm-support mailing list
> MITgcm-support at mitgcm.org
> http://mitgcm.org/mailman/listinfo/mitgcm-support