Merge GRIB2 Files with CDO WIN 32
Added by PANAGIOTIS GIANNIOTIS over 10 years ago
Hello and thanks in advance,
I'm downloading NWW3 from NOAA in GRIB2 Format :
http://nomads.ncep.noaa.gov/pub/data/nccf/com/wave/prod/multi_1.20151021/multi_1.glo_30mext.t00z.f00%%i.grib2
http://nomads.ncep.noaa.gov/pub/data/nccf/com/wave/prod/...
Firstly, I convert them from GRIB2 to GRIB1 using cnvgrib and then I need to merge all these files into GRIB1 Format. I was trying using operators like "mergetime", "merge" , "cat" but unfortunately it prints the error message uploaded below. Is there a way to make it happen in Windows XP x86 ?
| Mergetime Error.JPG (51.3 KB) Mergetime Error.JPG |
Replies (1)
RE: Merge GRIB2 Files with CDO WIN 32 - Added by Uwe Schulzweida over 10 years ago
Hello Panagiotis,
The GRIB2 files contain 13 variables, three of them (swell,swper,swdir) are on 2 levels.
cnvgrib seems to ignore the level information of these 3 variables and store them on the same level.
This makes the converted GRIB1 files inconsistent and not usable for CDO.
A workaround for this problem is to set the environment variable CDI_INVENTORY_MODE=time.
This will ignore double parameter entries on the same time step.
Here is an example for the shell sh/bash:
export CDI_INVENTORY_MODE=time cdo mergetime ifiles ofileBest regards,
Uwe