[CF-metadata] Rotated-pole grids

From: Don Murray <dmurray>
Date: Wed, 17 Jun 2009 08:52:54 -0600

John-

I believe for all grid_mappings that lat/lon are required even though
the grid mapping defines the transformations necessary. I think it is
redundant in all cases, not just for the rotated lat/lon.

Don

Jon Blower wrote:
> Dear all,
>
> We have some data that use a rotated pole grid. The CF convention for
> describing this is here:
> http://cf-pcmdi.llnl.gov/documents/cf-conventions/1.4/cf-conventions.html#id2985006.
> Are the 2D lon and lat variables in this example really necessary?
> They would seem to be redundant as their values can be calculated from
> rlon, rlat and the location of the new "north" pole.
>
> Thanks, Jon
>

-- 
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Don Murray                               UCAR Unidata Program
dmurray at unidata.ucar.edu                        P.O. Box 3000
(303) 497-8628                              Boulder, CO 80307
http://www.unidata.ucar.edu/staff/donm
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Received on Wed Jun 17 2009 - 08:52:54 BST