[CF-metadata] What do models assume for the shape of the Earth?

[Jonathan Gregory]

Dear John

> Now when I send that info to a GIS package that uses an 
> ellipsoidal earth, presumably they will correct the coordinates to take 
> this into account.

It shouldn't alter the lat and lon coords; they are what the model believes
it is using on a spherical Earth.

> If CF doesnt want to cope with this, it would be helpful if CF stated 
> that the scope of its mission is to deal with model data with resolution 
> greater than such and such.

That would be not satisfactory, I don't think. 

> Perhaps these are issues to be discussed at the GO-ESSP conference?

Good idea.

Best wishes

Jonathan