Re: Re: [ncl-talk] tips to unstagger data from WRF

ncl-talk-bounces_at_ucar.edu schrieb am 12/11/2007 12:46:43 AM:

> I am trying to look at 700 mb winds. Correct me if I am wrong but to do
this
> brings in an extra step of interpolating to pressure level using WRF-NCL
> code.
> So first I have to interpolate the data usingthe wrf_interp-3d function
and
> then use the " wrf_uvmet" function?

Hello,

This task is certainly doable with NCL alone. However, we solved it (for
computing wind velocity at a given relative height above the terrain
surface) in two steps:

1. Run NCEP WRF Postprocessor on the WRF output to destagger and extract
U, V WIND ON MDL SFCS, HEIGHT ON MDL SFCS, SURFACE HEIGHT.
2. Read in the resulting GRIB file with NCL and interpolate to a desired
height using wrf_interp_3d_z.

I think you could do much the same for "ON PRESS SFCS".

Regards,
Jan Ploski
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Received on Tue Dec 11 2007 - 01:28:52 MST