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
solid angle associated with a cone defined by the zenith angle.
Perhaps some other variant on the earlier suggestions would be better.
(either 3 names, or something related to "distributions" ... afterall
the quantity is calculated by considering the normalized histogram of
pixels (of equal area) placed in 3 different bins: day, night, and
"twilight").
best regards,
Karl
On 1/3/14 12:33 PM, Randy Horne wrote:
> 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
>
> definition:
> The fraction of the horizontal area where the solar zenith angle is within a specified range. A coordinate variable of solar_zenith_angle with boundaries indicating the range must be specified.
>
> very respectfully,
>
> randy
>
>
> On Jan 3, 2014, at 2:53 PM, Jonathan Gregory <j.m.gregory at reading.ac.uk> wrote:
>
>> 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 area resulting from the projection of the solar zenith angle. A
>>> coordinate variable of solar_zenith_angle with boundaries indicating the
>>> angular extent must be specified.
>> 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"?
>>
>> An advantage of this more general quantity is that you could contain day,
>> night, twilight and any other such fraction in a single data variable, if
>> you wanted to, by having a dimension of size more than one for the solar
>> zenith angle.
>>
>> Best wishes
>>
>> Jonathan
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>
> ____________________________________
>
> Randy C. Horne (rhorne at excaliburlabs.com)
> Principal Engineer, Excalibur Laboratories Inc.
> voice & fax: (321) 952.5100
> url: http://www.excaliburlabs.com
>
>
>
>
>
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