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Merge monthly files that have same starting time

Added by Justin Hicks over 7 years ago

Hello,

I am trying to merge AIRS monthly data files (September 2002 to December 2010) together into one file, but each individual file contains the same initial timestep of 1:1:1:0 (i.e. 00Z01JAN0001). Is there any CDO command that could merge these monthly files into one single file...where each time step represents the net chronological file?

In short, I have files such as: AIRS.2002.09.nc AIRS.2002.10.nc AIRS.2002.11.nc AIRS.2002.12.nc AIRS.2003.01.nc and so on, each with the same starting time. I want to merge these into one file, but mergetime just seems to plot one time value (I assume because each file has the same starting time).

Thanks,

-Justin


Replies (2)

RE: Merge monthly files that have same starting time - Added by Ralf Mueller over 7 years ago

Hi Justin!

IMO you should give enery file a reasonalbe time axis FIRST.

could be done like this

for file in AIRS.*nc; do
  year=$(echo $file | cut -d '.' -f 2)
  month=$(echo $file | cut -d '.' -f 3)
  cdo -settaxis,"${year}-${month}-01",00:00:00,days $file _${file}
done

cdo -merge '_AIRS*nc' all.nc

hth
ralf

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