Re: [CF-metadata] repost warming up old stuff - part 4: emissions (hit send too early)

2012-03-09 Thread Cameron-smith, Philip
Hi All, I try to keep my eye on how we will be able to create a vocabulary and grammar for std_names in the future, and I think the current construct (due_to_emission_from_source) is the best in this regard. If only we could move in that direction more quickly. Yours truly, Philip

Re: [CF-metadata] Warming up old stuff - 4 (emissions)

2012-03-09 Thread Cameron-smith, Philip
Hi All, This is why I like that Martin is proposing tendency_of_atmosphere_mass_content_of_. We can then grapple with the challenge of emission height if/when it becomes necessary to make the distinction. Best wishes, Philip --

[CF-metadata] Duplicate vocabulary attenuation/extinction and backscatterin/backwards_scattering.

2012-03-09 Thread Cameron-smith, Philip
Hi All, While working through recent std_name proposals for radiative transfer quantities, I encountered what appear to me to be duplicate vocabulary within the existing std_name list for a couple of terms: 1) _attentuation_ and _extinction_ appear to have the same physical meaning, although t

Re: [CF-metadata] warming up old stuff - part 1: aerosol mie scattering

2012-03-09 Thread Cameron-smith, Philip
Hi All, I have a few concerns. 1) Normally std_names are for quantities which both models and observations try to calculate/measure. What is being proposed here is a std_name that includes the method of calculation/measurement. Such std_names have long been controversial, so there is usually

Re: [CF-metadata] new standard names for surface aerosol optical properties

2012-03-09 Thread Cameron-smith, Philip
Hi Markus, Thanks for taking on this task :-). Some general comments: 1) There is no mention of frequency in your definitions. This is true for some of the existing std_name definitions too. However, I note that the description of some of the existing std_names (eg atmosphere_absorption_opt

Re: [CF-metadata] FW: GOES-R metadata prototype

2012-03-09 Thread Jim Biard
Mike, Here's my critique. You may not have options about some of this (I don't know what constraints the GOES-R program has placed on you), but I thought I would just tell you what I think. The first thing that I noticed about this layout (schema, whatever term you prefer) is that you don't

Re: [CF-metadata] warming up old stuff - part 1: aerosol mie scattering

2012-03-09 Thread Markus Fiebig
Hi Uma, thanks for your interest! The type of observations I'm concerned with are not only aerosol optical depth (AOD) as column integrated property, but also ground-based in-situ observations of particle size distribution, scattering and absorption coefficient that are representative for the