[CF-metadata] Standard name for direction of wind gust

Jonathan Gregory j.m.gregory at reading.ac.uk
Thu Jun 22 09:11:50 MDT 2017


Dear all

Stéphane says

> I think it is better if the construction of this new standard name
> is similar with the construction of other ones.

I agree with that. In general "direction" means "to" direction, as in
direction_of_sea_water_velocity
However in cases, like wind, where there is the possibility of misunder-
standing, I think "from_direction", while a bit peculiar in English, is
OK for the purpose.

Best wishes

Jonathan

> Of course we can discuss if we want to change all the existing
> from/to_direction standard_names, but it may take a lot more time to
> reach an agreement (On my side, I don't really have an opinion on
> the subject. from/to_direction may not be the best construction, but
> I think it is clear about what it represents)
> 
> I hope that, for the moment, this discussion won't prevent the
> creation of this new standard_name !
> 
> 
> Best regards
> 
> Stéphane Tarot
> 
> 
> 
> 
> Le 21/06/2017 à 17:57, Karl Taylor a écrit :
> >Hi all,
> >
> >I don't like "from_direction" as a construct (I know it's already
> >accepted for "wind_from_direction" and it is clearly explained in
> >the notes but wouldn't
> >
> >"direction_of_wind_vector_tail" or
> >"wind_vector_tail_direction or
> >"tail_direction_of_wind_vector"
> >
> > be more obvious?
> >
> >(for the "to" direction you could use "head" or "arrow")
> >
> >for gust, my vote would be
> >
> >"direction_of_wind_gust_vector_tail"
> >
> >(Of course, I would also prefer "speed_of_wind_gust" to
> >"wind_gust_speed" , and others probably don't).
> >
> >best,
> >Karl
> >
> >
> >On 6/21/17 3:10 AM, Stephane TAROT wrote:
> >>Dear Colleagues,
> >>
> >>I'd like to request the creation of a standard name for the
> >>direction of wind gust (which is linked to the existing
> >>wind_speed_of_gust). I suggest
> >>
> >>wind_from_direction_of_gust (degree)
> >>
> >>
> >>For the definition, a mix of the defintions of
> >>wind_from_direction and wind_speed_of_gust can be used, such as
> >>:
> >>
> >>"Wind is defined as a two-dimensional (horizontal) air velocity
> >>vector, with no vertical component. (Vertical motion in the
> >>atmosphere has the standard name upward_air_velocity.) In
> >>meteorological reports, the direction of the wind vector is
> >>usually (but not always) given as the direction from which it is
> >>blowing (wind_from_direction) (westerly, northerly, etc.). A
> >>gust is a sudden brief period of high wind speed. In an observed
> >>timeseries of wind speed, the gust wind speed can be indicated
> >>by a cell_methods of maximum for the time-interval."
> >>
> >>
> >>Best regards
> >>
> >>Stéphane Tarot
> >>
> >>
> >>
> >>
> >>
> >>
> >>
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> >
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> 
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