[CF-metadata] downward_air_velocity

From: Jim Biard <jbiard>
Date: Thu, 11 Sep 2014 12:03:47 -0400

Seems a shame that this wasn't originally handled with a standard name
of 'vertical_air_velocity' (or some such) that required a 'positive'
attribute. Both upward and downward could be covered with no confusion.

On 9/11/14, 11:52 AM, Jonathan Gregory wrote:
> Dear Ken
>
>> I would like to propose a new standard_name to complement upward_air_velocity. upward_air_velocity uses positive values to indicate upward direction, but we have many instrument that use a convention of positive values to indicate downward direction. Can we clone upward_air_velocity to downward_air_velocity with the sign convention reversed?
> I would say Yes! There are many such pairs, for just that reason. The
> motivation for this approach is that it is impossible to say what the
> quantity is without also making the sign convention explicit, which is
> a benefit to analysts.
>
> Cheers
>
> Jonathan
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Received on Thu Sep 11 2014 - 10:03:47 BST