6. Check namelist settings in the namelist files
user_nl_clm. Most CAM-chem related namelist variables are in
CaseDocs/atm_in, but MEGAN and drydep are in
CaseDocs/drv_flds_in (these files are created during build). To modify any of these, copy the appropriate lines to
user_nl_cam and edit there.
RUN_STARTDATE has been changed, you have to also change the date of the initial meteorology file in
user_nl_cam to start at the corresponding date.
For other changes see namelist changes or advanced options page.