Dear Martin and Angelika Since these names conform to existing patterns, I should think they are fine (not being an expert - but you are!).
> Note, that the definition of emissions for nitrogen_dioxide is tricky: > most inventories only give emissions for "NOx" (the sum of NO and NO2), and > sometimes it is not even clear to an uninformed user if these are > "expressed_as" nitrogen_monoxide or nitrogen_dioxide, or even nitrogen. The > ratio of emitted NO to emitted NO2 varies by source category, and this is now > sometimes taken into account in models. ... > > "nox_expressed_as_nitrogen_monoxide": > > "NOx" means a combination of two radical species containing nitrogen and > oxygen: NO+NO2. The phrase 'expressed_as' is used in the construction > A_expressed_as_B, where B is a chemical constituent of A. It means that the > quantity indicated by the standard name is calculated solely with respect to > the B contained in A, neglecting all other chemical constituents of A. I suppose that when A_expressed_as_B has been used up to now, A and B have been in a fixed ratio. That's not the case there. However, I think I understand the idea - does it mean you would express N as though it were all NO? That is assuming a fixed but fictitious ratio. Best wishes Jonathan _______________________________________________ CF-metadata mailing list [email protected] http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
