Articles | Volume 21, issue 4
Atmos. Chem. Phys., 21, 2527–2550, 2021
https://doi.org/10.5194/acp-21-2527-2021
Atmos. Chem. Phys., 21, 2527–2550, 2021
https://doi.org/10.5194/acp-21-2527-2021

Research article 19 Feb 2021

Research article | 19 Feb 2021

Comparison of chemical lateral boundary conditions for air quality predictions over the contiguous United States during pollutant intrusion events

Youhua Tang et al.

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Short summary
Chemical lateral boundary condition (CLBC) impact is essential for regional air quality prediction during intrusion events. We present a model mapping Goddard Earth Observing System (GEOS) to Community Multi-scale Air Quality (CMAQ) CB05–AERO6 (Carbon Bond 5; version 6 of the aerosol module) species. Influence depends on distance from the inflow boundary and species and their regional characteristics. We use aerosol optical thickness to derive CLBCs, achieving reasonable prediction.
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