Dear Randy
It would seem we have settled on
area_fraction_of_day_defined_by_solar_zenith_angle,
area_fraction_of_night_defined_by_solar_zenith_angle, and
area_fraction_of_twilight_defined_by_solar_zenith_angle.
These names and definitions look fine to me, if you think they'll serve your
Karl:
Here is the first sentence in the definition of area_type:
A variable with the standard name of area_type contains strings which indicate
the nature of the surface e.g. land, sea, sea_ice.
Assuming we want to be consistent with the examples in the definition and the
existing
Hi Randy,
Yes, I agree it extends the meaning of area_type a bit, but I would
think we could legitimately describe the nature of the surface as
being sunlit or in darkness (covered by the darkness of night) or
enjoying the last vestiges of daylight (i.e., twilight), so I don't
think we
Dear Jonathan:
good point on “area”.
“twilight” is fine.
I’m good with your preference of [a hybrid of (1) and (2) (i.e.
area_fraction_of_night_defined_by_solar_zenith_angle,
area_fraction_of_day_defined_by_solar_zenith_angle,
area_fraction_of_twilight_defined_by_solar_zenith_angle)]
very
Dear Randy, Jonathan, and all,
I agree that the hybrid choice with twilight rather than terminator,
is clearest.
Just to cover all the options (or maybe to revisit a suggestion I missed
earlier), could new area_type(s) be defined -- day, night, twilight --
and then we could just use the
Dear Jonathan:
All the options identified so far all have pros and cons. I’ll take a crack at
a summary-level recap ….
(1) add a type of area fraction consistent with current definition of existing
area_fraction (i.e.. day_area_fracton, night_area_fraction,
From: Randy Horne rho...@excaliburlabs.com
Sent: Wednesday, January 08, 2014 8:11 AM
To: Jonathan Gregory j.m.greg...@reading.ac.uk
Cc: CF Metadata List cf-metadata@cgd.ucar.edu
Subject: Re: [CF-metadata] new standard names: day, night, and day/night
terminator area_fractions
Dear
Area_fraction_with_solar_zenith_angle_within_stated_bounds ?
On Jan 6, 2014, at 08:38, Jim Biard jbi...@cicsnc.org wrote:
Hi, and Happy New Year!
I tried writing out the definition repeatedly, making it more and more
succinct, and came up with some possible names.
The sequence went
what about area_fraction_defined_by_solar_zenith_angle ?
defined_by exists in a couple of other standard names.
From: Jonathan Gregory j.m.greg...@reading.ac.uk
Sent: Monday, January 06, 2014 12:56 PM
To: cf-metadata@cgd.ucar.edu
Subject: [CF-metadata]
Jonathan,
I agree with what you have said. I was trying to see if I found something that
might be more succinct, and that was the direction my explorations took me.
The only bone I have to pick with “as_a_function_of” is that I find it a bit
confusing. In the case at hand, the name
Nice!
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On Jan 6, 2014, at 1:47 PM,
what about area_fraction_defined_by_solar_zenith_angle ?
That seems consistent with the other uses of defined_by, all of the sort
ocean_mixed_layer_thckness_defined_by_Y. I prefer this to 'as a function of',
for reasons Jim stated.
It {stated bounds} should be implied by saying there is a
Jonathan:
Thanks for taking the time to reply.
Some of the algorithms that generate our level 2 products using hyper spectral
observation data are sensitive to the solar zenith angle. For these products,
variables capturing the percentage of the product image in day, night, and
twilight
Dear Randy
a single standard name of area_fraction_of_solar_zenith_angle is fine. This
form could be useful for area fractions of other angles, such as platform
zenith angle.
Yes, true. If you're happy with it, then fine.
As far as a definition goes, how about:
fraction of horizontal
Dear Jonathan:
RE:
The first sentence is not clear to me. Does it mean, The fraction of the
horizontal area where the solar zenith angle is within a specified range?
Yes, that is what it means.
Incorporating this more clear statement yields the following:
area_fraction_of_solar_zenith_angle
Hi all,
I don't find area_fraction_of_solar_zenith_angle to be understandable
and I'm not sure the phrase makes sense. I don't see how you can have
an area of a solar zenith angle (or an area_fraction of an angle).
One could also be misled into thinking this was somehow related to the
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