Dear all,
I would agree with Alison that we continue with the almost-accepted
names for immediate use in the framework of AeroCom and HTAP. At the
same time, a longer discussion on a hierarchy of names should be persued.
Therefore, before you start to comment on the almost-accepted names
listed by Alison, please wait, because I was already working on them
when she wrote the email. This way we would avoid duplication of this
(quite tedious) work. Merci.
Regards,
Christiane
Schultz, Martin schrieb:
> Dear all,
>
> refering to Alison's mail, it is good to see that progress is made again. The suggestions look very reasonable to me, also the suggestion to leave out the group names at this stage. However, it would be good to see something like a "syntax rule" included in the table which is probably the same thing as the semantic discussion but perhaps at first on a very simple level.
>
> Going through your categories, I would suggest to describe (this includes some question as well):
> Volume mixing ratios:
> standard_name=mole_fraction_of_*_in_air
> units=1 , corresponding to mole/mole (which unfortunately is not an SI or udunits unit)
> * stands for a compound that is well defined and does not differ between models. I believe that isomers (as for xylene) are geenrally ok because no model distinguishes between those, but they are always lumped into one xylene species.
> Should we perhaps suggest standard_name=mole_fraction_of_group_*_in_air as a way out of the "lumping crisis"? This would indicate that this is a variable that requires further explanation (in the comment attribute?)
>
>
> Tendency of atmospheric mass content due to dry deposition:
> tendency_of_atmosphere_mass_content_of_*_due_to_dry_deposition OK
> units: kg m-3 s-1
>
> Tendency of atmospheric mass content due to wet deposition:
> tendency_of_atmosphere_mass_content_of_*_due_to_wet_depositon OK
> units: kg m-3 s-1
>
> Tendency of atmospheric mass content due to emissions:
> tendency_of_atmosphere_mass_content_of_*_due_to_emission OK
> This could optionally further specified as
> ..._due_to_anthropogenic_emissions
> ..._due_to_biogenic_emissions
> ..._due_to_vegetationfire_emissions
> For NOx in particular it might also be of interest to add:
> ..._due_to_aircraft_emissions
> ..._due_to_lightning_emissions (probably more correct to leave out "emissions", but this makes it easier to find it among the other source terms)
>
> Tendencies due to chemical reactions:
> tendency_of_atmosphere_mole_concentration_of_*_due_to_chemical_gross
> _production
>
>
> Optical thickness:
> atmosphere_optical_thickness_due_to_*_ambient_aerosol
>
> The following proposed names would be left out for now:
> tendency_of_atmosphere_mass_content_of_all_nitrogen_oxides_expressed_as_
> nitrogen_due_to_dry_deposition
>
> Here again the "group" solution might help:
> tendency_of_atmosphere_mass_content_of_group_reactive_nitrogen_oxides_expressed_as_
> nitrogen_due_to_dry_deposition
>
> It is important to add the "reactive" here, because otherwise N2O would also be included.
>
>
> You also put forward a more recent set of proposals:
> mole_fraction_of_carbon_dioxide_in_air
> mole_fraction_of_methane_in_air
> mole_fraction_of_formaldehyde_in_air
> mole_fraction_of_ethane_in_air
> mole_fraction_of_ethene_in_air
> mole_fraction_of_ethyne_in_air
> mole_fraction_of_propane_in_air
> mole_fraction_of_propene_in_air
> mole_fraction_of_benzene_in_air
> mole_fraction_of_toluene_in_air
> mole_fraction_of_xylene_in_air
> mole_fraction_of_isoprene_in_air
>
> I agree that these names are OK. In addition one could use "group" again to add
> mole_fraction_of_group_terpenes_in_air
>
> Best regards,
>
> Martin
>
> < Dr. Martin G. Schultz, ICG-II, Forschungszentrum J?lich >
> < D-52425 J?lich, Germany >
> < ph: +49 (0)2461 61 2831, fax: +49 (0)2461 61 8131 >
> < email: m.schultz at fz-juelich.de >
> < web: http://www.fz-juelich.de/icg/icg-2/m_schultz >
>
>
>
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Christiane Textor
Laboratoire des Sciences du Climat et de l'Environnement
Unite Mixte de Recherche CEA-CNRS-UVSQ
LSCE, CEA Saclay
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GEOMON scientific project manager http://www.geomon.eu
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Received on Wed Nov 07 2007 - 12:18:04 GMT
