Steve,
Thank you for your comment.
I am not sure whether I got the comment correct: It does not become
clear which mass per which volume is described by
"mass_concentration_of_X_in_dry_aerosol_in_air"? You mean ambiguity
whether it is either 'mass of X' in the volume of 'dry_aerosol_in_air'
of 'only mass of X, which is in dry aerosol' in the volume of 'air'?
With respect to the guide you linked: it does not become what 'B'
actually is? Thus, I should re-think the order and the connecting
prepositions?
Or do want to point out that the terms "atmosphere_mass_content_*" and
"mass_concentration_*_in_air" might be problematic in general?
Daniel
On 14.08.2017 16:37, Steven Emmerson wrote:
> Greetings,
>
> Just a reminder from an obsessive pedant who favors standards.
>
> The terms "mass concentration" and "mass content", while they might be
> well-understood in some scientific disciplines, aren't universally
> understood in all scientific disciplines. FWIW, I recommend looking at
> what Canada and the US have done regarding standard names for physical
> quantities. Section 8.6.2 of
> <https://www.nist.gov/physical-measurement-laboratory/nist-guide-si-chapter-8>
> is a good starting point.
>
> Regards,
> Steve Emmerson
>
> On Mon, Aug 14, 2017 at 3:48 AM, Daniel Neumann
> <daniel.neumann at io-warnemuende.de
> <mailto:daniel.neumann at io-warnemuende.de>> wrote:
>
> Just a brief reminder.
>
>
> On 24.07.2017 16 <tel:24.07.2017%2016>:59, Daniel Neumann wrote:
>
> Dear CF-Mailinglist,
>
> I suggest to rename all standard names (rename = create the
> new names and make the old names aliases to the new ones)
>
> atmospheric_mass_content_of_X_dry_aerosol
> to
> atmospheric_mass_content_of_X_in_dry_aerosol
>
> and
>
> mass_concentration_of_X_dry_aerosol_in_air
> to
> mass_concentration_of_X_in_dry_aerosol_in_air
>
> and
>
> atmosphere_mass_content_of_sulfate_dry_aerosol_particles_expressed_as_sulfur
>
> to
> atmosphere_mass_content_of_sulfate_in_dry_aerosol_particles_expressed_as_sulfur
>
>
> I am not aware of any reasonable exceptions for X.
>
>
> Further I would like to suggest to add
>
> atmospheric_mass_content_of_X_in_dry_aerosol
> mass_concentration_of_X_in_dry_aerosol_in_air
>
> for chloride and sodium (units and descriptions according to
> the existing other standard names of this type).
>
>
> Reasons:
> (a) As stated here
> (http://mailman.cgd.ucar.edu/pipermail/cf-metadata/2017/059588.html
> <http://mailman.cgd.ucar.edu/pipermail/cf-metadata/2017/059588.html>)
> and here
> (http://mailman.cgd.ucar.edu/pipermail/cf-metadata/2017/059554.html
> <http://mailman.cgd.ucar.edu/pipermail/cf-metadata/2017/059554.html>),
> the standard name mass_concentration_of_X_dry_aerosol
> describes the total dry mass of all aerosol particles that
> contain traces of X. There is currently no term to describe
> the mass concentration of particulate X.
> (b) As stated here
> (http://mailman.cgd.ucar.edu/pipermail/cf-metadata/2017/059588.html
> <http://mailman.cgd.ucar.edu/pipermail/cf-metadata/2017/059588.html>)
> there is no practical application or
> mass_concentration_of_X_dry_aerosol. However, for the CMIP5
> experiments the standard name
> atmospheric_mass_content_of_X_dry_aerosol is used to describe
> the mass content of particulate X (sulfate, nitrate, ammonium)
> in the atmosphere. See standard_output.pdf on
> http://cmip-pcmdi.llnl.gov/cmip5/output_req.html
> <http://cmip-pcmdi.llnl.gov/cmip5/output_req.html> for
> details:
> http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.pdf
> <http://cmip-pcmdi.llnl.gov/cmip5/docs/standard_output.pdf> .
> There are probably more situation, in which
> mass_concentration_of_X_dry_aerosol and
> atmospheric_mass_content_of_X_dry_aerosol were wrongly used.
> At least I would have used it wrongly :-) .
>
> In order to (a) have valid standard names for the mass
> concentration (and mass content) of particulate X and (b) be
> backward compatible with respect to the current usage of
> existing standard names, I suggest to rename the old variable
> names (create new one + make the old ones aliases to the new
> ones) instead of just creating new ones (without alias-ing).
>
>
> Regards,
> Daniel
> _______________________________________________
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>
>
> --
> Daniel Neumann
>
> Leibniz Institute for Baltic Sea Research Warnemuende
> Physical Oceanography and Instrumentation
> Seestrasse 15
> 18119 Rostock
> Germany
>
> phone: +49-381-5197-287 <tel:%2B49-381-5197-287>
> fax: +49-381-5197-114 <tel:%2B49-381-5197-114> or 440
> e-mail: daniel.neumann at io-warnemuende.de
> <mailto:daniel.neumann at io-warnemuende.de>
>
> _______________________________________________
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>
>
--
Daniel Neumann
Leibniz Institute for Baltic Sea Research Warnemuende
Physical Oceanography and Instrumentation
Seestrasse 15
18119 Rostock
Germany
phone: +49-381-5197-287
fax: +49-381-5197-114 or 440
e-mail: daniel.neumann at io-warnemuende.de
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