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[CF-metadata] new standard names: day, night, and day/night terminator area_fractions

From: rhorne at excaliburlabs.com <rhorne>
Date: Mon, 6 Jan 2014 13:47:43 -0500

what about area_fraction_defined_by_solar_zenith_angle ?

"defined_by" exists in a couple of other standard names.

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From: "Jonathan Gregory" <j.m.gregory at reading.ac.uk>
Sent: Monday, January 06, 2014 12:56 PM
To: cf-metadata at cgd.ucar.edu
Subject: [CF-metadata] new standard names: day, night, and day/night
terminator area_fractions

Dear Jim

I agree that "within stated bounds" is explicit and self-explanatory but I
feel that we shouldn't need to say that, because this is true for any
variable
at all which has coordinates with bounds, and we have not said it in any
other
standard name. It should be implied by saying there is a dependence on a
coordinate, I think. That is why I suggested "as a function of" i.e.
X_as_a_function_of_Y should indicate that X has Y as a coordinate, and
it's
likely or required that the coordinates have bounds. It's quite surprising
that we have not needed such a construction before. Mostly one does not
have
to state what X depends on because it's obvious what it could depend on
e.g.
location and time. Sometimes extra words appear implying dependence on
other
coordinates e.g. "spectral", indicating a dependence on wavelength.

Best wishes

Jonathan
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