This is a historical artifact: sailors and weathervanes identify winds by where
they blow from, so the west wind blows eastward. Not much to be done about it!
We will have to live with from_/to_.
Jonathan Gregory writes:
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
_______________________________________________
CF-metadata mailing list
[email protected]
http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
_______________________________________________
CF-metadata mailing list
[email protected]
http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
_______________________________________________
CF-metadata mailing list
[email protected]
http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
----- End forwarded message -----
_______________________________________________
CF-metadata mailing list
[email protected]
http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
--
V. Balaji Office: +1-609-452-6516
Head, Modeling Systems Group, GFDL Mobile: +1-917-273-9824
Princeton University Email: [email protected]
_______________________________________________
CF-metadata mailing list
[email protected]
http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
