Dear Jonathan
The new proposal looks fine to me. Thanks. I see that you don't have to define
the thickness of the layer; instead, you are defining it implicitly through the
method of diagnosis. Others may have views, of course.
Cheers
Jonathan
----- Forwarded message from Jonathan Wrotny <jwrotny at aer.com> -----
> Date: Wed, 2 Oct 2013 11:26:27 -0400
> From: Jonathan Wrotny <jwrotny at aer.com>
> User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:17.0) Gecko/20130801
> Thunderbird/17.0.8
> To: Jonathan Gregory <j.m.gregory at reading.ac.uk>, "cf-metadata at cgd.ucar.edu"
> <cf-metadata at cgd.ucar.edu>
> Subject: Re: [CF-metadata] Surface temperatures
>
> Dear Jonathan Gregory,
>
> I am getting back to this reply after a long time - sorry, I was
> pulled in a few different directions lately. Hopefully, it is
> possible to bring back to life a submission that I had made for the
> land_surface_skin_temperature.
>
> Revisiting my previous proposal and a few e-mails by Karl Taylor and
> Evan Manning, I have made some modifications to the definition of
> this standard name so that I can incorporate some suggestions by
> Karl and Evan. Here is my current proposal:
>
> Standard Name:land_surface_skin_temperature
>
> Definition:The land surface skin temperature is the temperature of a
> land point or the land portion of a region as inferred from infrared
> radiation emitted directly towards space through the atmosphere. Not
> all of the emitted surface radiation originates at the soil.Some may
> come from various terrestrial features (e.g., vegetation, rivers,
> lakes, ice, snow cover, man-made objects).Thus, the land surface
> skin temperature is the aggregate temperature of an effective layer
> which includes the soil and terrestrial features at the surface (if
> they occur).In models, the radiating temperature of the surface is
> usually the "surface_temperature", which then can be taken to be
> equivalent to land_surface_skin_temperature or sea_surface_skin
> temperature, depending on the underlying medium.
>
> Canonical Units:K
>
> Thanks for still considering this proposal. Sincerely,
>
> Jonathan Wrotny
>
> On 8/1/2013 12:56 PM, Jonathan Gregory wrote:
> >Dear all
> >
> >I agree with Karl than in CF standard names "land" means "non-sea", whereas
> >sea-ice is part of sea. Hence I would support adding land_surface_skin_
> >temperature, for use by applications which classify locations as land or sea.
> >
> >However I also agree with Evan that one can approach this more generally,
> >and therefore I would also support the addition of surface_skin_temperature,
> >with which an area-type could be specified, if anyone wants to follow that
> >approach (we only add names when they are needed).
> >
> >The quotations that Evan made show that we need to change the definitions
> >where they mention "skin". This is because in these new names "skin" is being
> >given a more precise and practical meaning, motivated by observational methods,
> >whereas the surface_temperature names were introduced for models, in which
> >the skin can be a notional and infinitesimally thin layer.
> >
> >Best wishes
> >
> >Jonathan
> >_______________________________________________
> >CF-metadata mailing list
> >CF-metadata at cgd.ucar.edu
> >http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
>
----- End forwarded message -----
Received on Thu Oct 03 2013 - 10:34:33 BST
