CDO

Hi!

I extracted some data from MARS at ECMWF. The data is stored in grib2 on a Lambert conformal conic projection. First, I got the impression that the CDOs cannot handle this kind of data, especially the grid description. However, know it seems to me they can! :-)
Could somebody please confirm that it is correct to change the grid to a curvilinear with cdo setgridtype,curvilinear. Thanks!

Some more details:
1) The grid description of the downloaded data:
sm_semsc@bi1:TEST$ cdo griddes TEST_T2m.grb #

1. gridID 1 #
   gridtype = lcc
   gridsize = 319225
   xsize = 565
   ysize = 565
   originLon = 341.68
   originLat = 17.612
   lonParY = 8
   lat1 = 48
   lat2 = 48
   xinc = 11000
   yinc = 11000
   projection = northpole
   cdo griddes: Processed 1 variable ( 0.09s )
   sm_semsc@bi1:TEST$

2) Transformation to a curvilinear grid:
sm_semsc@bi1:TEST$ cdo -f nc setgridtype,curvilinear TEST_T2m.grb TEST_T2m_curvi.nc
cdo setgridtype: Processed 1596125 values from 1 variable over 5 timesteps ( 0.64s )
sm_semsc@bi1:TEST$

sm_semsc@bi1:TEST$ cdo griddes TEST_T2m_curvi.nc | less #

1. gridID 1 #
   gridtype = curvilinear
   gridsize = 319225
   xname = lon
   xlongname = longitude
   xunits = degrees_east
   yname = lat
   ylongname = latitude
   yunits = degrees_north
   xsize = 565
   ysize = 565
   xvals = -18.3199997 -18.2337151 -18.1473618 -18.0609417 -17.9744511 -17.8878937
   -17.8012695 -17.7145748 -17.6278152 -17.540987 -17.454092 -17.3671284
   ...

To me, everything seems correct. However, I would be happy if somebody could confirm that the data is treated in the right way.

Moreover, I do actually have a "real" question. Assuming that the procedure above is correct for a scalar field as temperature, what about the wind field? Is there any rotation needed if I change the grid to a curvilinear grid?

Thanks for any help or comment,
Semjon