[MITgcm-support] variable gravity
alastair.mckinstry at nuigalway.ie
Tue Jan 25 07:05:14 EST 2011
On 2011-01-23 02:15, Jean-Michel Campin wrote:
> 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.
I would also be interested in any notes on this; I'm experimenting with
deep oceans on exoplanets (100 km or so), and was looking at how
it might be implemented with rStar.
> On Mon, Jan 17, 2011 at 12:29:12PM -0500, Angela Marie Zalucha wrote:
>> 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.
>> 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
>> (720) 208-7211
>> MITgcm-support mailing list
>> MITgcm-support at mitgcm.org
> MITgcm-support mailing list
> MITgcm-support at mitgcm.org
Alastair McKinstry, <alastair.mckinstry at nuigalway.ie>
Centre for Astronomy, National University of Ireland,Galway
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