[ncl-talk] rot lat_lon to regular lat_lon

[Debasish Hazra]

Hi,
I have a file which is in rotate lat_lon grid with the following
attributes, but lat and lon are not 2 dimensional. How to plot this data
and also how to convert it into regular lat lon ?

 file global attributes:
      cen_lat : 50
      cen_lon : -118
      dlat : 0.1169081
      dlon : 0.1169081
      dtp : 180
      fhzero : 1
      grid : rotated_latlon
      grid_id : 1
      lat1 : -28.5
      lat2 : 28.5
      lon1 : -45.25
      lon2 : 45.25
      dimensions:
      time = 1
      grid_yt = 488
      grid_xt = 775
variables:
      float aod ( time, grid_yt, grid_xt )
         _FillValue :   9.99e+20
         cell_methods : time: point
         long_name :    total aerosol optical depth at 550 nm
         missing_value :        9.99e+20
         output_file :  phy
         units :        numerical

      double grid_xt ( grid_xt )
         cartesian_axis :       X
         long_name :    rotated T-cell longiitude
         units :        degrees

      double grid_yt ( grid_yt )
         cartesian_axis :       Y
         long_name :    rotated T-cell latiitude
         units :        degrees

      double time ( time )
         calendar :     JULIAN
         calendar_type :        JULIAN
         cartesian_axis :       T
         long_name :    time
         units :        hours since 2026-07-14 06:00:00

Appreciate your help on this.
Thanks,
Debasish
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