Dear John and Martin I see that "barometric altitude" is a term which is in use, so I accept that it's OK for a standard name. I thought it worthwhile to ask the question.
Best wishes and thanks Jonathan On Sat, Jul 06, 2013 at 08:43:10AM -0700, John Graybeal wrote: > Date: Sat, 6 Jul 2013 08:43:10 -0700 > From: John Graybeal <[email protected]> > To: CF Metadata List <[email protected]> > Subject: Re: [CF-metadata] Request for a new standard_name: > barometric_altitude > X-Mailer: Apple Mail (2.1508) > > Sorry my response was offline, an accident; will append below for the record. > > I support Martin's rationale for sticking with the original; it will also be > more recognizable to many. This may be a good spot for using aliases, one > direction or the other, as it seems "barometric altitude" is functionally > exactly the same meaning as "air pressure expressed as altitude". > > Previously commented offline: > > > I may be having a silly moment, can you explain how the second definition > > matches the second name? I would have assumed altitude_above_ground means > > how far the airplane is above the terrain -- in this case based on a > > barometric pressure altitude, and some knowledge of how high the ground is > > in a given location. > > > > Instead the definition seems to be more like > > barometric_altitude_based_on_takeoff_pressure. > > John > > > On Jul 6, 2013, at 05:25, "Schultz, Martin" <[email protected]> wrote: > > > Dear Jonathan (and John who replied offline), > > > > "* Would it be acceptable and useful to follow some other kinds of standard > > name and call this air_pressure_expressed_as_altitude?" > > > > Actually, I think not. The goal of this quantity is really to describe > > altitude, not pressure. This is different from a > > "mole_fraction..._expressed_as...", because there it is really the same > > thing with a simple conversion factor. So, I would still prefer > > "barometric_altitude". > > > > Concerning the second name, I see that we need to define this better. > > Actually, it doesn't seem as straightforward as I thought... We will take > > your comments into account when rephrasing the proposal for the second name. > > > > Best regards, > > > > Martin > > > > From: Jonathan Gregory <[email protected]> > > To: [email protected] > > Subject: [CF-metadata] Request for a new standard_name: > > barometric_altitude > > Message-ID: <[email protected]> > > Content-Type: text/plain; charset=us-ascii > > > > Dear Martin > > > > Obviously these quantities are useful. I have two suggestions for your > > consideration, hoping I have understood the idea. > > > > * Would it be acceptable and useful to follow some other kinds of standard > > name > > and call this air_pressure_expressed_as_altitude? > > > > * above_ground doesn't seem specific enough to me, because you don't mean > > the > > local ground, which we would usually call "surface" in standard names (i.e. > > the > > bottom of the atmosphere). To be more precise, we could use something longer > > such as wrt_surface_at_flight_origin. It refers to a particular time and > > place. > > > > Best wishes > > > > Jonathan > > > > > > > > ------------------------------------------------------------------------------------------------ > > ------------------------------------------------------------------------------------------------ > > Forschungszentrum Juelich GmbH > > 52425 Juelich > > Sitz der Gesellschaft: Juelich > > Eingetragen im Handelsregister des Amtsgerichts Dueren Nr. HR B 3498 > > Vorsitzender des Aufsichtsrats: MinDir Dr. Karl Eugen Huthmacher > > Geschaeftsfuehrung: Prof. Dr. Achim Bachem (Vorsitzender), > > Karsten Beneke (stellv. Vorsitzender), Prof. Dr.-Ing. Harald Bolt, > > Prof. Dr. Sebastian M. Schmidt > > ------------------------------------------------------------------------------------------------ > > ------------------------------------------------------------------------------------------------ > > > > Das Forschungszentrum oeffnet seine Tueren am Sonntag, 29. September, von > > 10:00 bis 17:00 Uhr: http://www.tagderneugier.de > > _______________________________________________ > > CF-metadata mailing list > > [email protected] > > http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata > > ------------------------------------ > John Graybeal > Senior Data Manager, Metadata and Semantics > > T +1 (408) 675-5545 > F +1 (408) 616-1626 > skype: graybealski > > Marinexplore > 920 Stewart Drive > Sunnyvale, CA > > > > _______________________________________________ > CF-metadata mailing list > [email protected] > http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata _______________________________________________ CF-metadata mailing list [email protected] http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
