[Wrf-users] 10 minute averaged wind speed

[Hein Zelle]

Dear WRF users,

for wind simulations using the WRF model, I would like to extract 10
minute averaged wind speeds from the model output.  After searching
the documentation I have not been able to confirm what exactly is
stored in the wrf output files.  Do the values for u and v in the
wrfout* files represent instanteneous wind components, or should I
interpret these as an average over the past time step (e.g. 1 minute)?

Google found a paper on wind gust forecasting using MM5, where it is
suggested that the output represents instantenous values, but that the
model can only represent wind speed variations of several minutes.
That could mean that a 2 minute WRF timestep with output every 10
minutes comes close to representing a 10 minute averaged wind speed.

Does anyone have experience with this?  I would like to know for sure
what the values in the output file mean (time averaged or
instanteneous).  If anyone has made a postprocessing script of some
sort to produce time averaged output fields, I would be very
interested.

Kind regards,
     Hein Zelle

-- 

  dr. ir. Hein Zelle

  ARGOSS, Your Partner for Marine & Coastal Information

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