[Wrf-users] Code to convert WRF.out into cylindrical coords ?

[Hein Zelle]

Alex Fierro wrote:

> I was wondering if any of you would know of a short open-source (or
> home-made) program in matlab or fortran to translate/interpolate the data in
> the WRF.out from the WRF cartesian grid into a cylindrical grid with the
> origin located within the hurricane center (i.e., where psfc=pmin).
> 
> Kind regards and thank you very much in advance for your light,

Matlab can regrid WRF data with the function griddata, which uses a
triangulation routine for the interpolation.  It's slow, but mostly
works well.

The important part is to have a vector of source latitudes and
longitudes (e.g. the XLAT and XLONG fields from your netcdf output),
and to create a vector of target longintudes and latitudes.  You can
then regrid your data with

targetdata = griddata(sourcelon, sourcelat, sourcedata, targetlon, targetlat);

I wrote a C++ program myself to regrid WRF data to arbitrary CHIMERE
grids (netcdf), if there is an interest in this program I can ask if I
can distribute it.  If using MATLAB is ok then this is by far the
easiest route.  I have some sample matlab code available if you need
more assistance.

Kind regards,

     Hein Zelle

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  dr. ir. Hein Zelle

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