[CF-metadata] standard names for aerosols and chemistry

Bryan Lawrence b.n.lawrence at rl.ac.uk
Tue Sep 12 04:42:40 MDT 2006


I'm pretty sure that the CF list doesn't reach too many aerosol experts.
I've forwarded the proposed list on to some of my acquaintances ...

Cheers
Bryan


On Tue, 2006-09-12 at 10:43 +0100, Roy Lowry wrote:
> Hello Christiane,
> 
> I think you misunderstand.  I don't necessarily have a problem with the names per se.  I just do not understand what some of them represent.  I am a geochemist turned oceanographic data manager, not an atmospheric chemist and hence depend on the definitions, not the terms, to understand what is being proposed as I don't speak the domain jargon.  For example, with the mercury, what is the difference between '2' and '0' - oxidation state, form of chemical complexing, something else?
> 
> I had noticed the lack of reaction on the list to your proposal.  It may be that the CF list isn't reaching any domain experts beyond the group who have already been involved in the discussions.  For example, does anyone know if the UK groups like UMIST and UEA watch the list?
> 
> Cheers, Roy. 
> >>> Christiane Textor <christiane.textor at aero.jussieu.fr> 09/11/06 1:15 PM >>>
> Hello Roy,
> 
> Thank you very much for your comment! It is the only one I got so far 
> during the three weeks since submission. As you say a little more work 
> is needed and I would appreciate some more input (as my colleagues and I 
> did already quite a bit of work). I would very much appreciate more 
> comments on the proposed aerosol and chemistry names, especially as they 
> will be used in their current form within the HTAP model intercomparison 
> that is starting these days.
> 
> Concerning you comments:
> 
> What is wrong with surface_emission_flux?
> 
> The state of aerosols (liquid or dry) is dependent on their composition 
> and the ambient humidity. The proposed aerosol terms state clearly if 
> they relate to dry aerosol, or to which humidity they refer
> (e.g.  mass_fraction_of_pm10_aerosol_at_50_percent_relative_humidity_in_air
> mass_fraction_ of_dust_dry_aerosol_in_air)
> 
> Do you have any suggestions for the mercury variables?
> 
> Best regards,
> Christiane
> 
> Roy Lowry a écrit :
> > Hello Christine,
> > 
> > My main comment is that your work is a first step taking CF into a new area.  I therefore feel definitions are especially important.  
> 
> Whilst there are some really good definitions in your list (e.g. NOy) 
> there are other areas where more
> 
> information would be extermely helpful The ones that hit me straight 
> away are mercury_0, mercury_2,
> 
> 'surface_emission_mass_flux', the aerosol terms (does this include solid 
> particulates or just liquid phase?),
> 
> 'pm10' and 'pm2p5', but there may be others.
> > 
> > A little more work on this area would I think greatly enhance a good piece of work.
> > 
> > Cheers, Roy
> > 
> > 
> >>>>Christiane Textor <christiane.textor at aero.jussieu.fr> 08/18/06 5:53 PM >>>
> > 
> > Dear all,
> > 
> > I would like to propose you new_standard names for aerosols and chemical 
> > variables. These names will be used in the model intercomparisons in the 
> > framework of the Task Force on Hemispheric Transport of Air Pollution
> > (http://www.htap.org/, http://aqm.jrc.it/HTAP/) and the European 
> > Integrated Project GEMS (http://www.ecmwf.int/research/EU_projects/GEMS/).
> > 
> > The proposed names have been extensively discussed by a 'virtual 
> > workgroup' activity through a wiki page
> > http://wiki.esipfed.org/index.php/Air_Quality/Chemistry_Naming_Conventions
> > with the aid of some CF experts to whom we are very grateful for their 
> > support.
> > 
> > Many other people who contributed to discussion:
> > Olivier Boucher, Frank Dentener, Rudy Husar, Jonathan Gregory, 
> > KyleHalliday, BryanLawrence, Vincent-Henri Peuch, Sebastian Rast, Martin 
> > Schultz, Michael Schulz, Ranjeet Sokhi, David Stevenson, Karl Taylor, 
> > Christiane Textor, Peter van Velthoven.
> > 
> > Please find attached a file with the proposed standard names.
> > More information on how these names are constructed can be found at 
> > http://wiki.esipfed.org/index.php/CF_Standard_Names_-_Future_Atmospheric_Chemistry_and_Aerosol_Terms
> > 
> > I am looking forward to your comments.
> > 
> > Best regards,
> > Christiane Textor
> > 
> > (on vacation until September 11)
> > 
> 
> -- 
> Christiane Textor
> GMES France Atmosphère - GEMS France
> Service d'Aéronomie INSU CNRS, Tour 46, RDC # 2
> Université Pierre et Marie Curie, Boite 102
> 4 place Jussieu
> 75252 Paris Cédex 05
> France
> 
> Tel: ++33 1.44.27.21.82
> Fax: ++33 1.44.27.21.81
> Email: christiane.textor at aero.jussieu.fr
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