[CF-metadata] aerosol water

[Christiane Textor]

Dear Jonathan,

Jonathan Gregory a écrit :
> Dear Christiane
> 
>> *aerosol water
>> --------------
>> aerosol_water_ambient_aerosol
>> Jonathan porposed that the name should be the other way round. I do not 
>> agree because a 'water aerosol' would be a hydrometeor, i.e., clouds or 
>> precipitation.
> 
> I think I haven't understood what this name really means, sorry to say. I
> was guessing it meant the water present in ambient aerosol. But perhaps
> that is wrong?

Yes, this is indeed what is. I agree that the name is a bit strange as 
it is. It was constructed consistently to the other aerosol components:
species_<ambient/dry>_aerosol, and aerosol_water is an aerosol component 
as for example dust or sea salt. A better name would probably be:

water_in_ambient_aerosol_in_air

> 
> I agree with you about "emission".
> 
>> Please note that the HTAP experiments already started. Hence, it will 
>> not be possible to include all modifications resulting from our 
>> discussion into the HTAP simulations.
> Could you modify the netCDF files afterwards using ncatted for instance?

I doubt this, as it would mean a lot of extra work. We have indicated on 
the TFHTAP web site, that the standard_names used for chemistry and 
aerosols are still under discussion. I will discuss this issue with them.

> 
>> However, the aerosol and chemistry 
>> community is becoming familiar with CF and will be use these for future 
>> experiments.
> That's very good news - thanks to your effort in large measure, I expect.
> 
> Best wishes
> 
> Jonathan
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