Re: [CF-metadata] new standard name: land_surface_skin_temperature

2013-06-20 Thread Karl Taylor
Dear John, I agree that sea_surface_temperature is vague, and when possible folks should specify instead foundation, subskin, skin, or surface_temperature. No one has yet said what the difference is between skin temperature and surface_temperature, so I guess you could substitute one for the

Re: [CF-metadata] new standard name: land_surface_skin_temperature

2013-06-20 Thread Karl Taylor
Dear Jonathan G. [The following discussion has little relevance to CF standard names (so most of you shouldn't bother reading this), but scientifically I think it's worth discussing further, so hopefully Jonathan will at least continue.] I was startled when you wrote earlier that in models,

Re: [CF-metadata] new standard name: land_surface_skin_temperature

2013-06-20 Thread John Graybeal
Confirming what Jonathan says, sea_surface_temperature was was used to describe data (including observations going many decades back) that reflected a variety of locations -- right at the interface (with remote sensors), or varying distances under the skin (with in situ sensors, including bucket

Re: [CF-metadata] new standard name: land_surface_skin_temperature

2013-06-20 Thread Jonathan Gregory
Dear Karl As I wrote in a previous posting, I think surface_temperature is either a some- what vague concept, to be used when it is not critical to say exactly what is meant (that's fine - standard names have always supported a range of precision in concepts), or it's an idealisation which really

Re: [CF-metadata] new standard name: land_surface_skin_temperature

2013-06-20 Thread Karl Taylor
Dear all, O.K. I withdraw my suggestion to deprecate sea_surface_skin_temperature. I do think the definitions should say how skin temperature differs from surface temperature. Maybe someone can explain that in a few words. As I understand it, temperature is only defined when molecules are i

[CF-metadata] new standard name: land_surface_skin_temperature

2013-06-20 Thread Jonathan Gregory
Dear Karl Like Roy, I don't think we should deprecate sea_surface_skin_temperature. Although I cannot remember the arguments - which must be apparent in the mailing list archive - I do recall that it was a careful and long discussion with Craig which led to the introduction of the various SST name

[CF-metadata] new standard name: atmosphere_mass_content_of_volcanic_ash

2013-06-20 Thread Jonathan Gregory
Dear Jonathan > Standard Name: atmosphere_mass_content_of_volcanic_ash That seems fine to me. I wonder if the definition should say something about what volcanic ash is and is not. Cheers Jonathan ___ CF-metadata mailing list CF-metadata@cgd.ucar.ed

Re: [CF-metadata] scalar coordinates

2013-06-20 Thread Hedley, Mark
Hello Jonathan > The reason why this is hard to settle is that, as we have agreed, it has no > implication at all for the netCDF file. It is just a matter of interpretation. This doesn't seem right to me, my thought process is addressing how we encode concepts and what concepts are allowed to b

Re: [CF-metadata] new standard name: land_surface_skin_temperature

2013-06-20 Thread Lowry, Roy K.
Hello Karl, There have been extensive debates in the observational oceanographic community on the concept of 'sea surface temperature' - much of it on this list led by Craig Donlan - that resulted in the addition of sea_surface_foundation_temperature, sea_surface_skin_temperature and sea_surfac