CMAQv5.0.2 SOA Update

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The low-NOx toluene and xylene SOA yields were updated to follow the data in Table 3 of Ng et al. 2007 ACP. Values in CMAQv5.0.1 and prior were swapped. The correct values are:

Species Low-NOx yield (alpha)
m-xylene 0.36
toluene 0.30


Ng, N. L., J. H. Kroll, A. W. H. Chan, P. S. Chhabra, R. C. Flagan, J. H. Seinfeld, Secondary organic aerosol formation from m-xylene, toluene, and benzene, Atmos. Chem. Phys., 7, 3909-3922, 2007.