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 < [email protected]> wrote: > Just a brief reminder. > > > On 24.07.2017 16:59, 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/p >> ipermail/cf-metadata/2017/059588.html) and here ( >> 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/p >> ipermail/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 for details: >> 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 >> _______________________________________________ >> CF-metadata mailing list >> [email protected] >> http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata >> > > -- > 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: [email protected] > > _______________________________________________ > CF-metadata mailing list > [email protected] > http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata >
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