Dear Randy,
Will the method accepted in ticket 70
(https://cf-pcmdi.llnl.gov/trac/ticket/70) work for you?
"The expanded form of the grid_mapping attribute is required if one
wants to store coordinate information for more than one coordinate
reference system"
Something like this, perhaps:
float data_var
data_var:grid_mapping = "latitude-longitude: <associated coordinates>
geostationary: <associated coordinates>"
char latitude-longitude // grid mapping
char geostationary // grid mapping
All the best,
David
---- Original message from Randy Horne (09PM 19 Dec 13)
> From: Randy Horne <[email protected]>
> Date: Thu, 19 Dec 2013 21:26:20 -0500
> To: "[email protected]" <[email protected]>
> X-Mailer: Apple Mail (2.1510)
> Subject: [CF-metadata] one data variable is associated with two grid
> mappings
>
> Folks:
>
> We have a product with a data variable containing 10 degree latitude band
> statistics (i.e. min, max) derived from observation data whose east/west
> extents are associated with the field of view of a geostationary satellite
> (i.e. the recently defined geostationary grid mapping / projection).
>
> The implication is that this data variable is associated with two different
> grid mappings (latitude-longitude & geostationary). Workarounds to represent
> the east/west grid boundaries on the latitude-longitude grid mapping are
> unappealing due to the different geometries associated with the two
> projections.
>
> Thoughts ?
>
>
> very respectfully,
>
> randy
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--
David Hassell
National Centre for Atmospheric Science (NCAS)
Department of Meteorology, University of Reading,
Earley Gate, PO Box 243,
Reading RG6 6BB, U.K.
Tel : +44 118 3785613
E-mail: [email protected]
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