CDO

Hey everybody,

to avoid problems with the system's argument limit, which occurs if you execute cdo with too many/long files, I wanted to subdivide my input data set (one file per timestep and vertical level) into several subsets, merge them into temporary files and merge those then together into the final file. I use cdo select,name=q file1 file2 ... to merge the specific humidity from ICON OpenData files (in this case I could also use cdo merge since only one variable is present in the timesteps)
If I do not pay attention to the composition of a subset (I can provide a minimal working example if you wish for), I receive a warning like "Warning (gribapiScanTimestep1): Record 4 (name=q id=0.1.0 lev1=1 lev2=2) timestep 1: Inconsistent verification time!" as well as an error ("cdo select (Abort): Input streams have different number of layers per timestep!").

Merging all files at once works, since all timesteps and vertical layers are available, the problem only strikes if I try to create "arbitrary" subsets. Is there a possibility to go via arbitrary subsets? It is not necessary that the intermediate merged files are readable or you can work with, I'm only interested in the final merged file.