Hello,
I am using CMAQ-ISAM v5.3.3 to tag PM₂.₅-related species. However, in my output, the variable AECJ in the CCTM_SA_ACONC file is entirely zero, while in the regular CCTM_ACONC file, AECJ does have nonzero values. I also checked other species such as ASO4J, ANH4J, and ANO3J, and they all have valid (nonzero) values. I’m not sure what caused this issue, and I would greatly appreciate your help.
run_isam_test.csh (36.4 KB)
isam_control.txt (2.8 KB)
In the CCTM_SA_ACONC file, do the AECJ_ICO (contribution from initial conditions) and AECJ_BCO (contribution from boundary conditions) variables have non-zero values?
Looking at the CTM_LOG file, I think the emissions files may not include EC. If using the default emission mapping, then CMAQ expects there to be an emissions variable called PEC which will be mapped to the AECI and AECJ CMAQ species. In the emission portion of the CTM_LOG file (the part that starts with “EMISSIONS SCALING DIAGNOSTIC”), I am not seeing any lines for EC emissions. Could you check your emission input files to see if they include the variable PEC?
