Consequences of Insufficient Production of Temporary NOx Reservoirs on Ozone Production in Models During KORUS-AQ

The advent of geostationary satellites, starting with GEMS over South Korea, offer the potential for additional insight into urban air quality. In preparation for these satellites, the joint NIER-NASA KORUS-AQ field campaign in 2016 obtained a large dataset for understanding local air quality and the contribution of local emissions to ozone and PM2.5 pollution.
Models partitioned NOx primarily into inorganic nitrate (HNO3 + nitrate aerosol) while observations suggest that acyl peroxy nitrates (PNs) should be an important sink.
Models tended to produce ozone too efficiently, which may be due to insufficient alkyl/multifunctional nitrate (ANs) production.
Models are unable to simulate the transport of NOx away from the urban center and its impact on ozone production downwind.