Table 1.
List of acronyms.
| AHI | Advanced Himawari Imager |
| AOD | Aerosol Optical Depth |
| BTH | Beijing-Tianjin-Hebei |
| CMAQ | Community Multiscale Air Quality |
| COPD | Chronic Obstructive Pulmonary Disease |
| COVID-19 | COronaVIrus Disease of 2019 |
| FNR | Formaldehyde to Nitrogen dioxide Ratio |
| GLDAS | Global Land Data Assimilation System |
| MEE | Ministry of Ecology and Environment |
| MERRA-2 | Modern-Era Retrospective analysis for Research and Applications, Version 2 |
| MODIS | MODerate resolution Imaging Spectroradiometer |
| OP | Ozone Production |
| OPE | Ozone Production Efficiency |
| PM | Particulate Matter |
| PM10 | Particulate Matter with an aerodynamic diameter of <10 μm |
| PM2.5 | Particulate Matter with an aerodynamic diameter of <2.5 μm |
| Sentinel-5P | Sentinel-5 Precursor |
| SMA | Soul Metropolitan Area |
| TMA | Tokyo Metropolitan Area |
| TROPOMI | TROPOspheric Monitoring Instrument |
| VOC | Volatile Organic Compound |
| WHO | World Health Organization |