[CF-metadata] CF-1.6 Conformance Requirements/Recommendations

From: Jonathan Gregory <j.m.gregory>
Date: Mon, 26 Mar 2012 18:35:19 +0100

Dear all

Regarding Randy's reply:

> In the case of GOES-R (and also Meteosat) our coordinate variable values are N/S elevation angle and E/W scanning angle, which can be syntactically valid values albeit off the disk of the earth.

In this case, are there data values, or is the data missing at non-existent
points?

Regarding Nan's point, I would say that we do want CF to be inclusive. It
would be a mistake to impose irrelevant requirements that deterred people
from using the convention. In the case you mention, the chapter 9 convention
for profiles wouldn't allow you to have missing data in Z; it permits missing
data in coordinates only where the data is also missing.

I suppose that the pressure information is actually data in the raw obs
dataset. It would be legal to keep it in the file but not identify it as an
auxiliary coordinate variable (in the coordinates attribute). Then it would
be fine to having missing data in it. Would that be significantly less
convenient? Just a thought.

Cheers

Jonathan
Received on Mon Mar 26 2012 - 11:35:19 BST