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Need help regarding mergetime for netcdf files

Added by Ben L over 9 years ago

Hi all, I have been trying to combine multiple netcdf files into a single netcdf file, in order for further processing. The files have same variables, just separated based on times.

I tried to do this merging process on two sample files as attached below

I attempted to use cdo mergetime ionPrf_C002.2015.???.??.??.G??_0001.nc

but it said:

cdo merge (Abort): Wildcards support not compiled in!

---
Failing which, I tried cdo cat ionPrf_C002.2015.204.00.00.G16_0001.nc ionPrf_C002.2015.204.04.13.G30_0001.nc test.nc

but it said:

cdo cat (Abort): Grid size of the input parameters do not match!

-

Could I please have your advice on how I should go about combining multiple netcdf files using cdo? So far I have no success. I need to combine close to 50 of these netcdf files.

Thank you very much

Best regards
Ben

Download all files
ionPrf_C002.2015.204.00.00.G16_0001.nc (11 KB) ionPrf_C002.2015.204.00.00.G16_0001.nc file 1
ionPrf_C002.2015.204.04.13.G30_0001.nc (13.3 KB) ionPrf_C002.2015.204.04.13.G30_0001.nc file 2

Replies (1)

RE: Need help regarding mergetime for netcdf files - Added by Ralf Mueller over 9 years ago

Your input files have different grids:

ram@luthien:~/Downloads cdo sinfov ionPrf_C002.2015.204.0*                                                                                                                                                                                                                                                                                                                                                                                                                 [10:03:23|15-09-08]
   File format : netCDF
    -1 : Institut Source   Ttype    Levels Num    Points Num Dtype : Parameter name
     1 : unknown  unknown  constant      1   1       360   1  F32  : GEO_lat       
     2 : unknown  unknown  constant      1   1       360   1  F32  : GEO_lon       
     3 : unknown  unknown  constant      1   1       360   1  F32  : OCC_azi       
     4 : unknown  unknown  constant      1   1       360   1  F32  : TEC_cal       
     5 : unknown  unknown  constant      1   1       360   1  F32  : ELEC_dens     
   Grid coordinates :
     1 : generic                  : points=360
                          MSL_alt : 104.233 to 835.062 km
   Vertical coordinates :
     1 : surface                  : levels=1
   File format : netCDF
    -2 : Institut Source   Ttype    Levels Num    Points Num Dtype : Parameter name
     1 : unknown  unknown  constant      1   1       457   1  F32  : GEO_lat       
     2 : unknown  unknown  constant      1   1       457   1  F32  : GEO_lon       
     3 : unknown  unknown  constant      1   1       457   1  F32  : OCC_azi       
     4 : unknown  unknown  constant      1   1       457   1  F32  : TEC_cal       
     5 : unknown  unknown  constant      1   1       457   1  F32  : ELEC_dens     
   Grid coordinates :
     1 : generic                  : points=457
                          MSL_alt : 0.910965 to 777.574 km
   Vertical coordinates :
     1 : surface                  : levels=1
cdo sinfon: Processed 10 variables ( 0.00s )

mergetime expects equal grids

    (1-1/1)