Dear Ken and Jonathan,

I agree that this name is entirely consistent with others in the table. I have 
added a sentence to the definition to cross-reference the existing name 
upward_air_velocity:

downward_air_velocity (canonical units: m s-1)
' A velocity is a vector quantity. “Downward" indicates a vector component 
which is positive when directed downward (negative upward). Downward air 
velocity is the vertical component of the 3D air velocity vector. The standard 
name upward_air_velocity may be used for a vector component with the opposite 
sign convention.'

This name is accepted for publication in the standard name table.

I have also added a sentence to the definition of upward_air_velocity to 
cross-reference the new name:
upward_air_velocity (canonical units: m s-1)
' A velocity is a vector quantity. "Upward" indicates a vector component which 
is positive when directed upward (negative downward). Upward air velocity is 
the vertical component of the 3D air velocity vector. The standard name 
downward_air_velocity may be used for a vector component with the opposite sign 
convention.'

This change will be published in the standard name table at the same time as 
adding the new name.

Best wishes,
Alison

------
Alison Pamment                                                       Tel: +44 
1235 778065
Centre for Environmental Data Analysis         Email: [email protected]
STFC Rutherford Appleton Laboratory     
R25, 2.22
Harwell Campus, Didcot, OX11 0QX, U.K.


> -----Original Message-----
> From: CF-metadata [mailto:[email protected]] On Behalf
> Of Jonathan Gregory
> Sent: 26 February 2016 19:47
> To: [email protected]
> Subject: [CF-metadata] New standard_name: downward_air_velocity
> 
> Dear Ken
> 
> That looks good to me - clearly consistent with existing names.
> 
> Best wishes
> 
> Jonathan
> 
> ----- Forwarded message from "Kehoe, Kenneth E." <[email protected]> -----
> 
> > Date: Thu, 25 Feb 2016 20:31:31 +0000
> > From: "Kehoe, Kenneth E." <[email protected]>
> > To: "[email protected]" <[email protected]>
> > Subject: [CF-metadata] New standard_name: downward_air_velocity
> >
> > CF,
> >
> > Can we add downward_air_velocity to be the counter to the existing
> upward_air_velocity.
> >
> > Definition = A velocity is a vector quantity. “Downward" indicates a vector
> component which is positive when directed downward (negative upward).
> Downward air velocity is the vertical component of the 3D air velocity
> vector.
> >
> > Thanks,
> >
> > Ken
> >
> >
> >
> > Kenneth E. Kehoe
> > Research Associate
> > ARM Climate Research Facility Data Quality Office
> >
> > Office: 303-497-4754
> > Cell: 405-826-0299
> >
> 
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> 
> 
> ----- End forwarded message -----
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