Dear Christiane > We do not use CF at the moment in the plume model, so for my specific > problem our discussion is not relevant. I was just thinking that a vague > name could lead to problems later, if the variable is used by different > people in different ways.
Yes, I agree, it could, although we could try to explain in the definition. I think that either we use mass_fraction_of_X_in_air for all X and say that we are deliberately vague about whether air is ambient or dry - I think Martin favours this - or we use mass_fraction_of_X_in_ambient_air mass_fraction_of_X_in_dry_air which I think you favour. That involves aliasing quite a lot of existing names. I would be happy with either, except that I would say that the latter option is unsatisfactory for the particular case of mass_fraction_of_water_vapor_in_dry_air which appears not to make sense. That problem can be avoided by sticking with the existing humidity_mixing_ratio, which is a term in general use, for that one case, even though it would be unsystematic. I hope that's a correct summary. Best wishes Jonathan _______________________________________________ CF-metadata mailing list [email protected] http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
