-
Yes, the emissions from mgn2mech are supposed to be usable with CMAQ.
-
In CMAQ 5.2 the option to turn off BEIS was
setenv CTM_BIOGEMIS N
-
The MEGAN output can be read similar to other emissions, or merged with another emissions file. See this thread for further discussion.
Newer versions of CMAQ allow for MEGAN version 3.2 to be run online, which is much simpler.