Spatiotemporal Variations of Air Pollutants before and after the COVID-19 Pandemic in Chengdu
The pandemic of coronavirus disease 2019 (COVID-19, caused by the SARS-CoV-2 virus) had severe health, social, and economic impacts across the globe. However, the reduction in air pollution resulting from travel restrictions emerged as a beacon of hope. This study focused on Chengdu, China, using a generalized additive...