[CF-metadata] downward_air_velocity

From: Jonathan Gregory <j.m.gregory>
Date: Thu, 11 Sep 2014 16:52:58 +0100

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
Received on Thu Sep 11 2014 - 09:52:58 BST