Articles | Volume 21, issue 4
Atmos. Chem. Phys., 21, 2527–2550, 2021
Atmos. Chem. Phys., 21, 2527–2550, 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.

Data sets

JPSS Program Office (2017): NOAA JPSS Visible Infrared Imaging Radiometer Suite (VIIRS) Aerosol Optical Depth and Aerosol Particle Size Distribution Environmental Data Record (EDR) from NDE S. Kondragunta, I. Laszlo, and L. Ma

Model code and software

ytangnoaa/EMC_aqfs: NAQFC with CMAQ 5.0.2 (Version v5.1.0) J. Huang, P. Lee, and M. Potts

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.
Final-revised paper