Merge netcdf files error
Added by Muhammad Ramzan over 1 year ago
Hi
I am number of Netcdf files in one directory please
named as era_temperature_2000.nc era_temperature_2001.nc and so on
I want to make one netcdf file from these.
I have tried the following commands but getting the error
cdo mergetime era_temperature_2000.nc era_temperature_2001.nc era_temperature.nc
File era_temperature.nc already exists, overwrite? (yes/no): y
cdf_put_vara_double: name=t type=NC_SHORT minval=-39483.000000 maxval=738.000000
Error (cdf_put_vara_double): NetCDF: Numeric conversion not representable
cdo merge era_temperature_2*.nc era_temperature.nc
cdo merge (Warning): Duplicate entry of parameter name t in era_temperature_2001.nc!
cdf_put_vara_double: name=t type=NC_SHORT minval=-33882.000000 maxval=1202.000000
Error (cdf_put_vara_double): NetCDF: Numeric conversion not representable
| era_temperature_2001.nc (5.29 MB) era_temperature_2001.nc | |||
| era_temperature_2000.nc (5.3 MB) era_temperature_2000.nc | |||
| era_temperature_2002.nc (5.29 MB) era_temperature_2002.nc | |||
| era_temperature_2003.nc (5.29 MB) era_temperature_2003.nc | |||
| era_temperature_2004.nc (5.3 MB) era_temperature_2004.nc | |||
| era_temperature_2005.nc (5.29 MB) era_temperature_2005.nc | |||
| era_temperature_2006.nc (5.29 MB) era_temperature_2006.nc | |||
| era_temperature_2007.nc (5.29 MB) era_temperature_2007.nc | |||
| era_temperature_2008.nc (5.3 MB) era_temperature_2008.nc | |||
| era_temperature_2009.nc (5.29 MB) era_temperature_2009.nc |
Replies (1)
RE: Merge netcdf files error - Added by Karin Meier-Fleischer over 1 year ago
You should take a look at each single file then you can see that each time the scale_factor and the add_offset of the variable t is changing.
2000:
t:scale_factor = 0.000789376720268796 ;
t:add_offset = 294.658907069452 ;
2001:
t:scale_factor = 0.00089752684835312 ;
t:add_offset = 290.967202603763 ;
2002:
t:scale_factor = 0.000911437719116705 ;
t:add_offset = 291.218660492078 ;
...
You can merge all files using the option '-b F64' but this will increase the file size.
cdo -b F64 -mergetime era_temperature_*.nc out.nc