[mpas-developers] proposed standard quasi-uniform grids

[Michael Duda]

Hi, Todd.

I think it would be a great idea to place standard meshes
on our sourceforge site. I have just a couple of questions
regarding the contents of the mesh files themselves:

1) What is the meaning of the 'history' attribute in the
   netCDF mesh files? Would this be used to store grid 
   provenance data, or was this attribute automatically 
   added by the 'ncatted' utility?

2) Recognizing that the grid generation code itself 
   adds the fields u, v, h, vh, circulation, vorticity, ke,
   and tracers, should we first modify the global_scvt code 
   to eliminate these fields before creating the final set 
   of files to be distributed?

Otherwise, I think the contents of the tar files looks
complete.

Cheers,
Michael


On Mon, Nov 08, 2010 at 02:52:32PM -0700, Todd Ringler wrote:
> 
> Hi All,
> 
> I am proposing that we produce "standard" quasi-uniform global SCVT grids for general use and distribution. Lately we have run across a couple of examples where confusion arose due to using different meshes with same number of grid cells.
> 
> Here are the links to the meshes that we have produced:
> 
> 480 km: 2562: https://files.me.com/todd.ringler/002lh9
> 240 km: 10242: https://files.me.com/todd.ringler/t9tker
> 120 km: 40962: https://files.me.com/todd.ringler/qqy336
> 60 km: 163842: https://files.me.com/todd.ringler/ghlhxu
> 30 km: 655362: https://files.me.com/todd.ringler/r4hkk4
> 
> Each of these meshes were produced from the trunk/grid_gen/global_scvt directory, rev 572 by Doug Jacobsen at FSU. Each mesh was iterated to a level of converge of 1.0e-11 (this represents the average grid point movement on the unit sphere on each iteration).
> 
> Each of the x1.grid.*.nc files have been given global attributes related to when they were generated, from what revision # and that they are considered the "standard" mesh for that resolution.
> 
> Each *.tar.gz files contains the locs.dat file, graph.info file and a wide assortment of graph.info.part.* files.
> 
> I am requesting feedback on these meshes and the files that are included in the *.tar.gz package. My proposal is to push these out to the sourceforge site once the vetting process is complete.
> 
> Cheers,
> Todd
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