For publication of historical and scenario simulations within CORDEX the standardised CMOR format is mandatory. For COSMO-CLM output the tool CCLM2CMOR has been developed to convert COSMO-CLM output into CMOR format. The output of ICON-CLM can also been converted with this tools there are two important settings you have perform
In job_settings SPICE set the time series output format ITYPE_TS=2 or 3 .
In control_cmor.ini of CCLM2CMOR set DirIn=${SPDIR}/chain/work/cmor1/post/yearly/
After adding other appropriate settings in control_cmor.ini and the .csv file as described in the CCLM2CMOR documentation you can run the script run_cmor.sh.