CDO

First of all, thank you for creating and maintaining CDO. It is a fantastic piece of software, substantially increasing my productivity.

I am working in the domain of kilometer-scale climate models, and in the recent years, this community has been growing rapidly. Since these models yield an improved representation of the diurnal cycle of deep convection and precipitation, many of us are are working on this topic. Hence writing small for loops performing the operations to compute it has become a frequent task. For instance, using bash on Linux, this can be done the following way:

for h in $(seq -w 00 23); do
cdo timmean -selhour,$h in.nc temp_$h.nc
done
cdo mergetime temp_??.nc out.nc

Since CDO supports tends to support the most common use-cases, I think it might be a good candidate for a new operator.

An existing thread referencing this use-case is:
https://code.mpimet.mpg.de/boards/1/topics/169