Fine particulate matter pollution in the Sichuan Basin of China from 2013 to 2020: Sources, emissions, and mortality burden.

Fine particulate matter (PM) pollution is a critical air quality concern which poses threats to public health. Despite strict air pollution control measures implemented in China since 2013, PM exceedances and region-wide PM episodes are still frequently observed in the Sichuan Basin (SCB) located in southwestern China. Here, we examine ambient PM pollution within the SCB from 2013 to 2020, focusing on emission sources, trends, and health outcomes.