Changes in Air Quality and Drivers for the Heavy PM_2.5 Pollution on the North China Plain Pre- to Post-COVID-19.

ABSTRACT: Under the clean air action plans and the lockdown to constrain the coronavirus disease 2019 (COVID-19), the air quality improved significantly. However, fine particulate matter (PM_2.5) pollution still occurred on the North China Plain (NCP). This study analyzed the variations of PM_2.5, nitrogen dioxide (NO₂), sulfur dioxide (SO₂), carbon monoxide (CO), and ozone (O₃) during 2017-2021 on the northern (Beijing) and southern (Henan) edges of the NCP. Furthermore, the drivers for the PM_2.5 pollution episodes pre- to post-COVID-19 in Beijing and Henan were explored by combining air pollutant and meteorological datasets and the weighted potential source contribution function. Results showed air quality generally improved during 20

SUBMITTER: Liu S 

PROVIDER: S-EPMC9566441 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature