Environmental Engineering Reference
In-Depth Information
and react. Therefore, it helps resolve the inconsistencies between the ambient
observations and model predictions that motivated the latest round of the debate
regarding the oxidized-primary OA split.
(a) POA-summer
(d) POA-winter
(b) OPOA-summer
(e) OPOA-winter
(f) SOA-winter
(c) SOA-summer
F
ig. 1.
Predictions of average ground-level organic aerosol and vapor concentrations during July
2001 and January 2002: (a) primary organic aerosol during July, (b) oxidized primary organic
aerosol during July, (c) secondary organic aerosol formed from traditional precursors during
July, (d) primary organic aerosol during January, (e) oxidized primary organic aerosol during
January, and (f) secondary organic aerosol formed from traditional precursors during January
