[MITgcm-support] Offline Velocity Fields

[helen hill]

Hi Ryan

I have code to make interpolated velocity fields non-divergent...

Haven't looked at this stuff for months, but will have a poke around later
today and see what I can put together for you.

Helen

On Tue, Feb 26, 2008 at 6:44 PM, Ryan Abernathey <rpa at mit.edu> wrote:

> Hello MITgcm people,
> I am running an offline tracer advection using 3D velocity fields (from
> Matt Mazloff's SOSE model).
>
> I would like to interpolate the velocity fields to a finer grid.
> Specifically, I would like to go from 1/6th degree to 1/12th degree -- twice
> the resolution.
>
> I first tried the most obvious thing and simply refined each field without
> taking the boundaries into account. (I just added extra points in between
> each grid point and interpolated.) I did the same procedure to refine the
> bathymetry file. As I suspected, when I ran the advection, divergent fluxes
> near the boundaries acted as tracer sinks.
>
> Could someone suggest a better way to approach this problem? I know that
> my fields need to be non-divergent and satisfy a no-normal-flux boundary
> condition. However, I can't see how to force my fields to satisfy these
> conditions. Any suggestions would be very appreciated.
>
> Thanks,
> __________________
> Ryan Abernathey
> rpa at mit.edu
> MIT Ph.D. Student
> Program in Oceans Atmospheres & Climate
> http://web.mit.edu/rpa/
>
>
>
>
> _______________________________________________
> MITgcm-support mailing list
> MITgcm-support at mitgcm.org
> http://mitgcm.org/mailman/listinfo/mitgcm-support
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mitgcm.org/pipermail/mitgcm-support/attachments/20080227/1e2b5112/attachment.htm>