I’ve trackeck PM_TOT tagged species using CMAQv5.4_ISAM, however I am wondering what species should be summed to get total PM25/PM10 and how can I get PM2.5/PM10 portions from isam results. There are species for each mode (aitken,accumulation, and coarse) but I could not find the PM2.5 and PM10 fractions in cmaq_sa files. Would it be correct to use FPM25AIT,FPM25ACC, and FPM25COR from AELMO files? thanks for your help in advance
Yes, you can use these cutoff variables from the AELMO files. For the aggregation of the individual PM species to total PM mass, you can use the SpecDef files released with the previous version of CMAQ (CMAQv5.3.3) as guidance. You may also find the related discussion in this other recent thread helpful.