Merge hourly netcdf files into daily files with cdo and using shell script

Question

I have the variable:

files=$(ls *.nc)

Which contain hourly netcdf files that I want to merge into daily files using cdo. I need to create something like "cdo merge $files[1] $files[2] .... $files[24] all.nc" and run the expression. How can I create this expression in shell?

just to be sure, you want daily files with 24 timesteps, or did you require a daily mean? — ClimateUnboxed, Sep 14 '21 at 17:18

score 1 · Answer 1 · answered Sep 08 '21 at 20:14

Based on the information provided, the following might well produce the desired result:

cdo merge *.nc all.nc

In other words, let shell globbing do the work for you. A shell array variable seems unnecessary. But if you insist on using the array, try this

cdo merge "${files[@]}" all.nc

Merge hourly netcdf files into daily files with cdo and using shell script

1 Answers1