regrid method from Wrf data with xy_coordinate in Cartesian system (units: meter) to Earth coordinate system (lat, lon)?

Hello,

I have a wrf variable with xy_coordinate as west_east and south_north in
meter : v(time, pressure, south_north, west_east). I need to convert
them to the coordinate of lat and lon: v(time, pressure, lat, lon) .
Would you please give me sugesstions on how should I process? Or are
there any buildin functions which can do the job? I have checked ESMF
regrid examples, but it seems that none of them works for this case.

Detail information of wrf data:
       float v(time, pressure, south_north, west_east)
       float lon(south_north, west_east)
       float lat(south_north, west_east)
       coordinates: west_east
                             west_east:long_name="x-coordinate in
Cartesian system"
                             west_east:units="m"
                             south_north
                             south_north:long_name="x-coordinate in
Cartesian system"
                             south_north:units="m"

Thanks!
Jingmin
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Received on Tue Apr 23 02:41:15 2013