Re: [CF-metadata] How to define time coordinate in GPS?

2015-05-14 Thread Seth McGinnis
This seems eminently sensible to me. I particularly like the clarification you suggest in the second point. When edits are made to abolish the "standard" calendar, I would suggest including a footnote about what it used to mean, to spare users of old data the need to go hunting through old versio

Re: [CF-metadata] flux

2015-05-14 Thread Karl Taylor
Dear Jonathan, My oh my, this is bound to generate lots of opinions. I do recall the original discussion conclusion that although "flux density" was the proper name, we'd be lax in this case and go with common usage, "flux". An argument against the common usage is that if we want to define th

Re: [CF-metadata] New standard name requests for TSI and SSI

2015-05-14 Thread Jim Biard
Judith, I wasn't trying to imply that radiance and irradiance were the same. Just that one is in use, so I don't see a strong reason for the other to be excluded. If you are good with what Jonathan has proposed, then I am OK with them too. I was trying to champion an alternative viewpoint on

Re: [CF-metadata] New standard name requests for TSI and SSI

2015-05-14 Thread Jim Biard
Hi. I've looked at definitions of terms and such in a few different sources, and I'd like to suggest these standard names and definitions. I'll explain reasons after. solar_irradiance_at_1au (W m-2) defined as: "Solar" means originating from the Sun. 'Irradiance' means the flux of radiant en

[CF-metadata] flux

2015-05-14 Thread Jonathan Gregory
Dear all In connection with the radiative flux from the sun, the question has come up of whether we should use the phrase flux_density for a flux per unit area in all the standard names which currently have the word "flux". This would be correct in physical terminology, but years ago we chose to u

Re: [CF-metadata] New standard name requests for TSI and SSI

2015-05-14 Thread Jonathan Gregory
Dear Peter and Judith We are all specialists in our own fields. I didn't mean to imply that your field is any more or less esoteric! I was just making the point that standard name are often not the terms customarily employed. They aim to be more self- explanatory for a wide range of disciplines. A

Re: [CF-metadata] How to define time coordinate in GPS?

2015-05-14 Thread Karl Taylor
Dear all, I have not followed all the arguments over the last few weeks, but the summary below seems sensible to me. I don't think it will cause significant harm to eliminate "standard" calendar as an option and restricte the "gregorian" calendar to be one without leap seconds. best regards

Re: [CF-metadata] How to define time coordinate in GPS?

2015-05-14 Thread Jonathan Gregory
Dear Jim I think I completely agree with what you have written here! Thanks. Therefore I wonder what we are discussing now, and like Chris I'm unsure of the status of the proposal. So I will take the liberty of repeating the essential points of what I have suggested before, and if you disagree wit

Re: [CF-metadata] New standard name request for FAPAR

2015-05-14 Thread Lowry, Roy K.
Hi John, The reason I didn't jump to respond to Alison's suggested change is that I viewed it as a correction of a typo that hadn't been spotted rather than a redefinition. In my book PAR (photosynthetically active radiation) - the wavelengths that may be utilised by plants for photosynthesis