I have some confusion regarding how vertical layers are determined and defined in CMAQ and its inputs.
From my understanding, the CMAQ grid is defined in WRF. Does this mean that:
e_vert (in WRF namelist.input) = nz (in CMAQ run script)?
If e_vert need not = nz, must e_vert > nz (as MCIP can “collapse” the meteorological layers)?
What does CMAQ do with emissions input that have fewer vertical layers than the simulation?
Does anyone have suggestions for best practices in defining the various vertical layers?