Dear Jonathan,
I think this is clear and acceptable. thanks for the revisions.
regards,
Karl
On 10/3/13 9:34 AM, Jonathan Gregory wrote:
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 <[email protected]> -----
Date: Wed, 2 Oct 2013 11:26:27 -0400
From: Jonathan Wrotny <[email protected]>
User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:17.0) Gecko/20130801
Thunderbird/17.0.8
To: Jonathan Gregory <[email protected]>, "[email protected]"
<[email protected]>
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
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