CDO

Hi Mab,

with the files and the CDO commands from above I'm not able to reproduce the problem. The file final_WCPS_atmos_modified.nc seems to be another one than the one of the JPEG file.

cdo griddes final_WCPS_atmos_modified.nc > gridWCPS.txt
cdo remapbil,gridWCPS.txt RDPS_SFCWRO_20210121_06_1.nc RDPS_SFCWRO_20210121_06_1_interpolated.nc

cdo sinfon -seltimestep,1 final_WCPS_atmos_modified.nc 
cdo(1) seltimestep: Process started
   File format : NetCDF4 zip
    -1 : Institut Source   T Steptype Levels Num    Points Num Dtype : Parameter name
     1 : unknown  unknown  v instant       1   1      3332   1  F32z : WCPS_atmos_P_N0_SFC
   Grid coordinates :
     1 : curvilinear              : points=3332 (49x68)
                              lon : -81.98837 to -71.37656 degrees_east
                              lat : 43.43177 to 50.0458 degrees_north
                          mapping : rotated_latitude_longitude
                             rlon : 321.4019 to 325.7219 by 0.09000015 degrees
                             rlat : -20.34 to -14.31 by 0.09000001 degrees
   Vertical coordinates :
     1 : surface                  : levels=1
   Time coordinate :  1 step
     RefTime =  2016-01-01 00:00:00  Units = hours  Calendar = gregorian
  YYYY-MM-DD hh:mm:ss  YYYY-MM-DD hh:mm:ss  YYYY-MM-DD hh:mm:ss  YYYY-MM-DD hh:mm:ss
  2019-03-01 00:00:00

cdo sinfon -seltimestep,1 RDPS_SFCWRO_20210121_06_1.nc
cdo(1) seltimestep: Process started
   File format : NetCDF2
    -1 : Institut Source   T Steptype Levels Num    Points Num Dtype : Parameter name
     1 : unknown  unknown  v instant       1   1    770440   1  F32  : WCPS_atmos_P_N0_SFC
   Grid coordinates :
     1 : projection               : points=770440 (935x824)
                          mapping : polar_stereographic
                                x : 0 to 9340000 by 10000 m
                                y : 0 to 8230000 by 10000 m
   Vertical coordinates :
     1 : surface                  : levels=1
   Time coordinate :  1 step
     RefTime =  2021-01-21 06:00:00  Units = hours  Calendar = proleptic_gregorian
  YYYY-MM-DD hh:mm:ss  YYYY-MM-DD hh:mm:ss  YYYY-MM-DD hh:mm:ss  YYYY-MM-DD hh:mm:ss
  2021-01-21 13:00:00

cdo sinfon -seltimestep,1 RDPS_SFCWRO_20210121_06_1_interpolated.nc
cdo(1) seltimestep: Process started
   File format : NetCDF2
    -1 : Institut Source   T Steptype Levels Num    Points Num Dtype : Parameter name
     1 : unknown  unknown  v instant       1   1      3332   1  F32  : WCPS_atmos_P_N0_SFC
   Grid coordinates :
     1 : curvilinear              : points=3332 (49x68)
                              lon : -81.98837 to -71.37656 degrees_east
                              lat : 43.43177 to 50.0458 degrees_north
                          mapping : rotated_latitude_longitude
                             rlon : 321.4019 to 325.7219 by 0.09000015 degrees
                             rlat : -20.34 to -14.31 by 0.09000001 degrees
   Vertical coordinates :
     1 : surface                  : levels=1
   Time coordinate :  1 step
     RefTime =  2021-01-21 06:00:00  Units = hours  Calendar = proleptic_gregorian
  YYYY-MM-DD hh:mm:ss  YYYY-MM-DD hh:mm:ss  YYYY-MM-DD hh:mm:ss  YYYY-MM-DD hh:mm:ss
  2021-01-21 13:00:00

-Karin

Hi Karin, yes with sinfon I can't see any difference but when I do ncview there is some difference in rlon and rlat (see attached):

I want to merge these two files (final_WCPS_atmos_modified and RDPS_SFCWRO_20210121_06_1_interpolated). do you think that works?

thank you

When I open the netCDF file with ncview ncview is not responding anymore and I have to kill it. But I trust CDO because when reading and plotting with NCL everything is ok (as shown in your last cdo support issue).

Hi Karin, how do you plot these data with NCL?
Other point, can I merge final_WCPS_atmos_modified.nc and RDPS_SFCWRO_20210121_06_1_interpolated.nc sorted by date and time? because the first file contains a mask

thank you

You can merge files with the operator mergetime.

The NCL plot shows that the destination area is really small and the data values will be all 0.

And the NCL scriptis attached.