Interactive comment on “Semivolatile POA and parameterized total combustion SOA in CMAQv5.2: impacts on source strength and partitioning” by Benjamin N. Murphy et al
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The manuscript by Murphy et al. reports on the revised treatment of organic aerosol (OA) in the Community Multiscale Air Quality Model (CMAQ) v5.2. The revised treatment of OA includes: 1. partitioning and gas-phase aging of primary OA (POA), and 2. a new model species “pc” (pcVOA, pcSOG, pcSOA) that represents the missing emissions and processes that may be associated with secondary OA (SOA) formation from urban combustion sources. Model simulations are performed at 4and 12-km resolution and evaluated at different time periods, seasons, and US locations using surface network monitor data. The changes in the model representation of OA generally result in better correlation and improved bias; the average contribution of the new model species, pcSOA, to OA was ∼39% in winter and ∼24% in summer. The model evalua-
منابع مشابه
Supplement of Semivolatile POA and parameterized total combustion SOA in CMAQv5.2: impacts on source strength and partitioning
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تاریخ انتشار 2017