Dear Sebastien and Alison Sorry to come back to this late, but in view of a more recent discussion, it's occurred to me that we should put mean_sea_level rather than sea_surface_height in these three names. By sea_surface_height we mean its instantaneous level, but when we speak of steric SL change we're referring to mean sea level. Would you agree?
Best wishes Jonathan ----- Forwarded message from Sebastien Villaume <[email protected]> ----- > Date: Fri, 9 Jun 2017 07:43:19 +0000 > From: Sebastien Villaume <[email protected]> > To: alison pamment <[email protected]> > CC: [email protected], Jonathan Gregory <[email protected]>, > Kevin Marsh <[email protected]> > Subject: Re: New standard names for NEMO ocean model output > X-Mailer: Zimbra 8.6.0_GA_1200 (ZimbraWebClient - FF50 (Linux)/8.6.0_GA_1200) > > Thank you Alison! > > We (Kevin Marsh and myself) are happy with the amended definitions you > proposed. > > only one minor tweak in the last sentence of the > "steric_change_in_sea_surface_height" definition: I would add "_height" at > the end of "steric_change_in_sea_surface". I assume it was intended that way > but "_height" got somehow truncated. > > Best wishes, > Sébastien > > ----- Original Message ----- > From: "alison pamment" <[email protected]> > To: "sebastien villaume" <[email protected]> > Cc: [email protected], "Jonathan Gregory" <[email protected]> > Sent: Thursday, 8 June, 2017 15:28:25 > Subject: RE: New standard names for NEMO ocean model output > > Dear Sebastien, > > Thank you for once again bringing this back to the list. I agree that the > discussion seems to have settled on the "steric" names rather than the longer > versions. We need to have definitions, so I've modified the text I suggested > previously. > > We now have: > steric_change_in_sea_surface_height (m) > ' "Sea surface height" is a time-varying quantity. The steric change in sea > surface height is the change in height that a water column of standard > temperature T=0°C and practical salinity S=35.0 would undergo when its > temperature and salinity are changed to the observed values. The sum of the > quantities with standard names thermosteric_change_in_sea_surface_height and > halosteric_change_in_sea_surface_height is the total steric change in the > water column height, which has the standard name of > steric_change_in_sea_surface_height. The sum of the quantities with standard > names sea_water_mass_per_unit_area_expressed_as_thickness and > steric_change_in_sea_surface is the total thickness of the sea water column.' > > halosteric_change_in_sea_surface_height (m) > ' "Sea surface height" is a time-varying quantity. The halosteric change in > sea surface height is the change in height that a water column of standard > practical salinity S=35.0 would undergo when its salinity is changed to the > observed value. The sum of the quantities with standard names > thermosteric_change_in_sea_surface_height and > halosteric_change_in_sea_surface_height is the total steric change in the > water column height, which has the standard name of > steric_change_in_sea_surface_height.' > > thermosteric_change_in_sea_surface_height (m) > ' "Sea surface height" is a time-varying quantity. The thermosteric change in > sea surface height is the change in height that a water column of standard > temperature T=0°C would undergo when its temperature is changed to the > observed value. The sum of the quantities with standard names > thermosteric_change_in_sea_surface_height and > halosteric_change_in_sea_surface_height is the total steric change in the > water column height, which has the standard name of > steric_change_in_sea_surface_height.' > > If you are happy with these then the names can be accepted and added at the > next update of the standard name table on 26th June. > > Best wishes, > Alison > > ------ > Alison Pamment Tel: +44 > 1235 778065 > Centre for Environmental Data Analysis Email: > [email protected] > STFC Rutherford Appleton Laboratory > R25, 2.22 > Harwell Campus, Didcot, OX11 0QX, U.K. > > > > > -----Original Message----- > > From: CF-metadata [mailto:[email protected]] On Behalf Of > > Sebastien Villaume > > Sent: 08 June 2017 13:09 > > To: Sebastien Villaume > > Cc: [email protected]; Jonathan Gregory > > Subject: Re: [CF-metadata] New standard names for NEMO ocean model output > > > > Dear all, > > > > since nobody is raising any more issues or showing strong feelings in the > > choice of final standard names, I propose to adopt > > > > steric_change_in_sea_surface_height > > halosteric_change_in_sea_surface_height > > thermosteric_change_in_sea_surface_height > > > > > > We will start producing variables with these standard names in the coming > > weeks. > > > > thanks, > > /Sébastien > > > > ----- Original Message ----- > > From: "Sebastien Villaume" <[email protected]> > > To: "Lowry, Roy K." <[email protected]> > > Cc: [email protected], "Jonathan Gregory" > > <[email protected]> > > Sent: Tuesday, 30 May, 2017 09:42:54 > > Subject: Re: [CF-metadata] New standard names for NEMO ocean model output > > > > Dear all, > > > > we would like to start using the remaining 3 standard names for NEMO output. > > We only need to reach a consensus on the standard names we would like to > > have: > > > > change_in_sea_surface_height_due_to_change_in_sea_water_density > > change_in_sea_surface_height_due_to_change_in_sea_water_practical_salinit > > y > > change_in_sea_surface_height_due_to_change_in_sea_water_temperature > > > > or > > > > steric_change_in_sea_surface_height > > halosteric_change_in_sea_surface_height > > thermosteric_change_in_sea_surface_height > > > > as I mentioned before, I don't have a strong preference, I only need a > > decision > > so that we can using them. > > > > thanks, > > /Sébastien > > > > ----- Original Message ----- > > From: "Lowry, Roy K." <[email protected]> > > To: "Jonathan Gregory" <[email protected]>, "Sebastien Villaume" > > <[email protected]> > > Cc: [email protected] > > Sent: Thursday, 27 April, 2017 09:48:42 > > Subject: Re: New standard names for NEMO ocean model output > > > > Dear All, > > > > > > My preference (but not insistence) would be for the more compact versions > > providing steric, halosteric and thermosteric are clearly described in the > > definitions. This is cleaner, less confusing, consistent with past > > practice, more > > likely to be discovered and readily understandable by those who are likely > > to > > need to use the Standard Names. > > > > > > If this is unacceptable to anybody then I'm in total agreement with Jonathan > > that we need to be consistent with existing Standard Names incorporating > > 'sterics', which means including both forms and aliasing them. > > > > > > Note that established practice over the past decade has caused 'alias' to > > come > > to mean 'deprecated and replaced by' rather than 'synonym'. Consequently, if > > going for the option of adding both forms and replacing the existing > > 'sterics' > > then the 'sterics' need to be the 'deprecates' and the 'due-tos' need to be > > the > > replacements in all cases. > > > > > > Cheers, Roy. > > > > > > Please note that I partially retired on 01/11/2015. I am now only working > > 7.5 > > hours a week and can only guarantee e-mail response on Wednesdays, my day > > in the office. All vocabulary queries should be sent to > > [email protected]. > > Please also use this e-mail if your requirement is urgent. > > > > > > ________________________________ > > From: CF-metadata <[email protected]> on behalf of > > Sebastien Villaume <[email protected]> > > Sent: 27 April 2017 09:16 > > To: Jonathan Gregory > > Cc: [email protected] > > Subject: Re: [CF-metadata] New standard names for NEMO ocean model output > > > > Dear all, > > > > I am not a domain expert, I can't really grasp which set of names is more > > suitable. As a non expert, I would favour the first set because it is more > > explicit. > > > > That said, I will follow what the domain experts and/or the standard names > > experts would recommend. Please let us know so we can agree and start using > > these names. > > > > > > Best wishes, > > /Sébastien > > > > ----- Original Message ----- > > From: "Jonathan Gregory" <[email protected]> > > To: [email protected] > > Sent: Wednesday, 26 April, 2017 22:36:14 > > Subject: Re: [CF-metadata] New standard names for NEMO ocean model output > > > > Dear Sebastien > > > > > @Jonathan: what would be the standard names if we were using > > "_due_to_change_in_" ? Since it is a "change" of height due to a "change" > > of a > > physical property, we end up with: > > > > > > change_in_sea_surface_height_due_to_change_in_sea_water_density > > > > > change_in_sea_surface_height_due_to_change_in_sea_water_practical_salinit > > y > > > change_in_sea_surface_height_due_to_change_in_sea_water_temperature > > > > Yes, I agree, that would be right. > > > > > It is fine for me but I understand it could look awkward to some > > > users/experts. > > It is however nicely verbose to help understand what those parameters are. > > > > > > If we were removing "_above_sea_floor" from the names proposed by Alison: > > > > > > steric_change_in_sea_surface_height > > > halosteric_change_in_sea_surface_height > > > thermosteric_change_in_sea_surface_height > > > > > > it is more compact and elegant but it could be a bit cryptic to > > > non-experts. > > > > Yes, I agree with this too. As I mentioned, thermosteric and steric do > > appear > > in existing names (one each), so we should either rename those with due_to, > > or > > use the steric terms here, for consistency. > > > > > I am fine with both formulations and I agree with Kevin, we could keep > > > both > > versions and make aliases. > > > > I am fine too with either of them, but not with aliases for this purpose. We > > use aliases to preserve backwards-compatibility when we change our minds, > > not > > to provide synonyms in the first place. > > > > Best wishes > > > > Jonathan > > _______________________________________________ > > CF-metadata mailing list > > [email protected] > > http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata > > CF-metadata Info Page - > > mailman.cgd.ucar.edu<http://mailman.cgd.ucar.edu/mailman/listinfo/cf- > > metadata> > > mailman.cgd.ucar.edu > > This is an unmoderated list for discussions about interpretation, > > clarification, > > and proposals for extensions or change to the CF conventions. > > > > > > > > _______________________________________________ > > CF-metadata mailing list > > [email protected] > > http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata > > CF-metadata Info Page - > > mailman.cgd.ucar.edu<http://mailman.cgd.ucar.edu/mailman/listinfo/cf- > > metadata> > > mailman.cgd.ucar.edu > > This is an unmoderated list for discussions about interpretation, > > clarification, > > and proposals for extensions or change to the CF conventions. > > > > > > > > ________________________________ > > This message (and any attachments) is for the recipient only. 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