Dear Markus,
good to hear that you are taking this up as a GAW initiative. Personally I
wouldn't have a problem with your suggestion, but I'd like to refer this
discussion to the more aerosol-oriented community. Small change (lowercase
"mie"). Hence your name would read
"volume_scattering_coefficient_in_air_due_to_ambient_aerosol_assuming_mie_scattering"
Cheers,
Martin
PS: I think it would be appreciated if you can also suggest a definition term
(basically summarizing your thoughts from the last email).
> -----Original Message-----
> From: Markus Fiebig [mailto:markus.fie...@nilu.no]
> Sent: Wednesday, March 07, 2012 12:24 PM
> To: Schultz, Martin; cf-metadata@cgd.ucar.edu
> Cc: Shankar, Uma (ushan...@unc.edu)
> Subject: RE: warming up old stuff - part 1: aerosol mie scattering
>
> Dear Martin,
>
> thanks for filling me in on the background of this discussion! This must have
> happened before I joined the mailing list, and I do need to admit it's a
> hassle
> to read through the whole archive.
>
> I do see your point, i.e. that you describe a modelled variable, but I still
> think
> it is self-contradicting to call the variable extinction coefficient, and then
> confine this to aerosol scattering within one and the same variable name. I
> actually wouldn't be so concerned if the syntax philosophy didn't conflict
> with
> the variable names I'm about to propose on behalf of the WMO Global
> Atmosphere Watch (GAW) aerosol programme. The names are going to be
> of the type "volume_scattering_coefficient_in_air_due_to_dry_aerosol",
> which in fact isn't defined yet.
>
> How about calling your variable
>
> "volume_scattering_coefficient_in_air_due_to_ambient_aerosol_assuming
> _Mie_scattering" ?
>
> That would avoid the self-contradiction, it would fit into the syntax
> philosophy used so far, and it would still express clearly that it is a model
> output variable with an underlying assumption.
>
> Best regards,
> Markus
>
> _______________________________________
> Dr. Markus Fiebig
>
> Dept. Atmospheric and Climate Research (ATMOS) Norwegian Institute for
> Air Research (NILU) P.O. Box 100
> N-2027 Kjeller
> Norway
>
> Tel.: +47 6389-8235
> Fax : +47 6389-8050
> e-mail: markus.fie...@nilu.no
> skype: markus.fiebig
>
>
> -----Original Message-----
> From: Schultz, Martin [mailto:m.schu...@fz-juelich.de]
> Sent: Mittwoch, 7. März 2012 11:16
> To: Markus Fiebig; cf-metadata@cgd.ucar.edu
> Cc: Shankar, Uma (ushan...@unc.edu)
> Subject: RE: warming up old stuff - part 1: aerosol mie scattering
>
> Dear Markus,
>
> thanks for the thoughtful response. I cc this to Uma Shankar who had
> sent me the RSIG (http://badger.epa.gov/rsig/) CMAQ variable list from
> where this suggestion originated. CMAQ is of course a model. I don't think it
> would hurt to have also standard_names for pure model quantities, but I
> agree with you that one may have to phrase and define this more clearly.
> The name you propose is already in the list, and the suggestion was to
> include a more specific term to denote the specific contribution from Mie
> scattering.
>
> Best regards,
>
> Martin
>
> PS: original proposal was
> "* How can we get more specific about the "extinction coefficient"? In
> particular, we would like to express something like
> "..._due_to_Mie_scattering". But does this work with "
> volume_extinction_coefficient_in_air_due_to_ambient_aerosol". The new
> name would then become
> "volume_extinction_coefficient_in_air_due_to_Mie_scattering_of_ambient
> _aerosol" ? (and would "Mie" be spelled with "M" or "m"?)"
>
> > -----Original Message-----
> > From: Markus Fiebig [mailto:markus.fie...@nilu.no]
> > Sent: Wednesday, March 07, 2012 9:31 AM
> > To: Schultz, Martin; cf-metadata@cgd.ucar.edu
> > Subject: RE: warming up old stuff - part 1: aerosol mie scattering
> >
> > Dear all,
> >
> > please excuse if I come in late into this discussion, but I would like
> > to make a few comments about the proposed variable name
> >
> >
> "volume_extinction_coefficient_in_air_due_to_mie_scattering_of_ambient
> > _aerosol"
> >
> > As it is written above, the name is self-contradicting. The aerosol
> > extinction coefficient is defined to include both, particle scattering
> > and absorption. The part of the aerosol extinction coefficient that is
> > due to particle scattering is commonly referred to as aerosol
> > scattering coefficient. Also, I need to apologise for not having
> > followed the discussion concerning the use of the term "mie", but it
> > appears rather to confuse than to clarify in the context here. Even
> > though the term Mie-particle is colloquially used for a spherical,
> > internally well mixed aerosol particle, such a particle exists only in
> > theory or in some numerical model. If the variable name is also to be used
> for an observed quantity, which I think it should, the term "Mie" should be
> avoided.
> >
> > How about putting this much simpler, and name the property:
> >
> > "volume_scattering_coefficient_in_air_due_to_ambient_aerosol"
> >
> > or, to avoid even more confusion:
> >
> > "volume_scattering_coefficient_at_stp_in_air_due_to_ambient_aerosol"
> >
> > Regards,
> > Markus
> >
> >
> >
> > _______________________________________
> > Dr. Markus Fiebig
> >
> > Dept. Atmospheric and Climate Research (ATMOS) Norwegian Institute for
> > Air Research (NILU) P.O. Box 100
> > N-2027 Kjeller
> > Norway
> >
> > Tel.: +47 6389-8235
> > Fax : +47 6389-8050
> > e-mail: markus.fie...@nilu.no
> > skype: markus.fiebig
> >
>
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