Dear Jonathon, dear Roy,
thank you for your quick answers.
I have just spoken with my collegue of the German Weather Service (DWD).
For the WMO the term "Beaufort wind force" is uncommon, but we are
content with your suggested standard name "beaufort_wind_force" as well.
His only questions was: Why dimensionless?
The WMO speaks of the Beaufort wind scale and mentions the Beaufort number
together with the unit Beaufort. Since this unit is shifted into the standard
name we don't insist on the unit Beaufort and would accept a dimensionless
unit as well.
Greetings,
Martina
On Thursday 20 September 2007 12:26, Roy Lowry wrote:
> Hi Jonathan,
>
> I totally agree with your suggestion.
>
> Cheers, Roy.
>
> >>> Jonathan Gregory <j.m.gregory at reading.ac.uk> 9/20/2007 11:15 am >>>
>
> Dear Martina
>
> > We would like to register a CF standard name:
> >
> > standard name: wind_force
> > unit: synoptical wind speed classification in classes (0-12 or extended
> > in 0-17); the unit is usually refered to as Bft [Beaufort].
> >
> > This classification of the wind speed is used by the National Weather
> > Services and the WMO for wind speed estimation. Since there is no unique
> > mathematical conversion into wind speed, we need a new standard name for
> > the wind force.
> >
> > The WMO-Defintion could be found in the WMO Manual on Codes, No. 306,
> > part A, Alphanumeric codes (WMO Code table 3700 (i.e. Sea State) and in
> > Section E for the Beaufort scale).
> > http://www.wmo.ch/pages/prog/www/WMOCodes/Manual/WMO306_Vol-I-1-PartA.pdf
>
> To be perfectly clear what this is, I suggest we should make the standard
> name beaufort_wind_force. Otherwise it might be misunderstood as meaning
> forcing in the physical sense of something in newtons. If we call it
> beaufort_wind_force I don't think it needs to have a unit; it's actually a
> dimensionless number on the scale.
>
> Cheers
>
> Jonathan
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--
--------------------- MPI-M / IFM-GEOMAR ---------------------------
Dr. Martina Stockhause
email: martina.stockhause at zmaw.de
phone: +49 40 41173-124 or +49 431 600-4025
address: Max Planck Institute for Meteorology,
Bundesstrasse 53, D-20146 Hamburg
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Received on Thu Sep 20 2007 - 08:11:08 BST
