COVID-19 Lockdown Leads to PM2.5 Reductions in 11 Out of 12 of China’s Major Cities.
The lockdown caused by the COVID-19 epidemic saw the numbers of trucks and buses on the road reduce by 77% and 36%, respectively. Hundreds of factories were also closed for an extended period of time. Despite Smart Air analysis showing an increase in PM2.5 levels during February, there have been …
