Re: [CF-metadata] downward_air_velocity

2014-09-15 Thread Jonathan Gregory
their own conventions to impose further constraints on how CF is used in their dataset. Best wishes Jonathan - Forwarded message from Ben Hetland - > From: Ben Hetland > To: "cf-metadata@cgd.ucar.edu" > Date: Fri, 12 Sep 2014 19:15:27 + > Subject: Re: [CF-meta

Re: [CF-metadata] downward_air_velocity

2014-09-12 Thread Ben Hetland
Dear Richard and others, > If we tried to be prescriptive, it might either (a) prevent > people from using CF, or (b) using it incorrectly, because it > didn't quite fit their needs, but they didn't want to change > how they did things. or (c) using it incorrectly because they didn't quite unders

Re: [CF-metadata] downward_air_velocity

2014-09-12 Thread Jonathan Gregory
Dear Ben > > It imposes a small cost by increasing the number of standard_names that > > have to be defined, but it's very easy to agree such pairs of > > standard_names, > > If I could have a say on this, I would prefer that the standard chooses just > one. Having the possibility of a dual set

Re: [CF-metadata] downward_air_velocity

2014-09-12 Thread Ben Hetland
Jonathan Gregory wrote on the issue of "downward" and "upward" as separate standard names vs indicated by an attribute: > If it was a separate attribute, it could be omitted, and probably sometimes > would be (even if that was an error). I second that, and I have seen it happen with other attrib

Re: [CF-metadata] downward_air_velocity

2014-09-11 Thread Jonathan Gregory
Dear Jim > 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. If it was a separate attribute, it could be omitted, and probably so

Re: [CF-metadata] downward_air_velocity

2014-09-11 Thread Jim Biard
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

[CF-metadata] downward_air_velocity

2014-09-11 Thread Jonathan Gregory
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_

[CF-metadata] downward_air_velocity

2014-09-10 Thread Kehoe, Kenneth E.
Dear CF-metadata, 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_ve