Table 1.
WRF-Chem numerical experimental designs.
| Experiment | Meteorological input | Anthropogenic emissions |
|---|---|---|
| BASE | FNL in 2020 | Usual levels in 2020 (EBASE) without regard to COVID-19 controls |
| CTL20 | FNL in 2020 | In CTL00–CTL20, emissions from power plant, industry, transportation and residential sectors are modulated considering the epidemic control measures (ECTL) based on activity data |
| CTL15 | FNL in 2015 | |
| CTL10 | FNL in 2010 | |
| CTL05 | FNL in 2005 | |
| CTL00 | FNL in 2000 | |
| CTL20-EM25 | FNL in 2020 | Same as CTL20, but the total emission reductions due to COVID-19 lockdown are further increased by 25%, i.e., ECTL–25% × (EBASE–ECTL) |
| CTL20-EM50 | FNL in 2020 | Same as CTL20, but the total emission reductions due to COVID-19 lockdown are further increased by 50%, i.e., ECTL–50% × (EBASE–ECTL) |
| CTL20-NO25 | FNL in 2020 | Same as CTL20, but the emission reduction of NOx due to COVID-19 lockdown is further increased by 25% |
| CTL20-NO50 | FNL in 2020 | Same as CTL20, but the emission reduction of NOx due to COVID-19 lockdown is further increased by 50% |