Hi Saat,G'dayThere is a function in CDO called as "ensmean" which can solve your problem if you want to average (ensemble mean) the variable/s.you can do like this using the wild card in CDO.cdo -r -f nc4 ensmean sst*.nc ensemble_mean_output.nchere *.nc covers all the files that you want to average with the help of * wild card. You have to be careful while using wild card " * " becaufill/nolab/lev=(-inf)(23,32,2)(inf) ave/6the error I get is
**ERROR: stack overflowAny lead is much appreciate. Thank youSaat M.