Hi, I use CMAQ v5.3.3, and among the species I can find, there are PM25_TOT and some PM25 components (such as PM25_OC, PM25_NO3, etc.). Regarding the information, I am using the cb6r3_ae7 scheme, so the script SpecDef_cb6r3_ae7_aq.txt reads the file. The formula is as follows:
PM25_TOT ,ug m-3 ,
(ASO4I[1] + ANO3I[1] + ANH4I[1] + ANAI[1] + ACLI[1] + AECI[1] + AOMI[0] + AOTHRI[1]) * PM25AT[3] +
(ASO4J[1] + ANO3J[1] + ANH4J[1] + ANAJ[1] + ACLJ[1] + AECJ[1] + AOMJ[0] + AOTHRJ[1] + AFEJ[1] + ASIJ[1] +
ATIJ[1] + ACAJ[1] + AMGJ[1] + AMNJ[1] + AALJ[1] + AKJ[1]) * PM25AC[3] +
(ASOIL[1] + ACORS[1] + ASEACAT[1] + ACLK[1] + ASO4K[1] + ANO3K[1] + ANH4K[1]) * PM25CO[3]
I would like to know what [0] means and if there is any issue with the formula. Thanks a lot!
[0] means that variable was defined earlier in the same file. You can search on AOMI in the following file for an example. CMAQ/CCTM/src/MECHS/cb6r3_ae7_aq/SpecDef_cb6r3_ae7_aq.txt at 5.3.3 · USEPA/CMAQ · GitHub