Hi All,

I am not wild about using 'type'.  I had to read the terms several times before 
I figured out what was being meant, because I could read it different 
grammatical ways.

A second problem is that it seems a particular definition will be linked to 
these terms (or did I miss something?), yet someone might reasonably want to 
use a different definition for high/middle/low clouds in the future.

Although I generally don't like including the origin of the data in the 
std_name, I think this may be an exception.   I would suggest using either 

ISCCP_high_cloud_area_fraction
ISCCP_middle_cloud_area_fraction
ISCCP_low_cloud_fraction

or

WMO_high_cloud_area_fraction
WMO_middle_cloud_area_fraction
WMO_low_cloud_fraction

I note that isccp_cloud_area_fraction is already an accepted std_name, so the 
suggestions above follow naturally.   

This would also allow changes to the high/middle/low definitions in the future. 
 This would be a problem if there is a proliferation of definitions, but I 
doubt this will be a problem.

Best wishes,

     Philip

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Dr Philip Cameron-Smith, [email protected], Lawrence Livermore National Lab.
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-----Original Message-----
From: [email protected] 
[mailto:[email protected]] On Behalf Of Jonathan Gregory
Sent: Tuesday, May 08, 2012 7:10 AM
To: [email protected]
Subject: Re: [CF-metadata] Standard_name for cloud-cover by phenomenon

Dear Heiko

> I just had a short side-discussion with Eizi, and we settled on
> 'type', i.e. we propose the standard names:
> 
> high_type_cloud_area_fraction
> middle_type_cloud_area_fraction
> low_type_cloud_area_fraction

These look fine to me. As you said to John, I hope that "type" would trigger
people to look up the definition.

Best wishes and thanks

Jonathan
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