Changes in Source‐Specific Black Carbon Aerosol and the Induced Radiative Effects Due to the COVID‐19 Lockdown

The impacts of anthropogenic emissions on the reduction source-specific equivalent black carbon (eBC) aerosols and their direct radiative effects (DREs) were investigated during lockdown coronavirus outbreak in a megacity China 2020. Five eBC sources identified using hybrid environmental receptor model. Results showed that biomass burning, traffic-related emissions, coal combustion dominant contributors to eBC. generalized additive model indicated was entirely attributed decrease emissions. Decreased biomass-burning activities favorable meteorological factors are both important drivers for lockdown. A transfer DRE efficiency from burning strongest, followed by This study highlights aggressive consumption residential solid fuels would be effective achieving climate change mitigation.