COVID-19 perturbation on US air quality and human health impact assessment.

ABSTRACT: The COVID-19 stay-at-home orders issued in the United States caused significant reductions in traffic and economic activities. To understand the pandemic's perturbations on US emissions and impacts on urban air quality, we developed near-real-time bottom-up emission inventories based on publicly available energy and economic datasets, simulated the emission changes in a chemical transport model, and evaluated air quality impacts against various observations. The COVID-19 pandemic affected US emissions across broad-based energy and economic sectors and the impacts persisted to 2021. Compared with 2019 business-as-usual emission scenario, COVID-19 perturbations resulted in annual decreases of 10-15% in emissions of ozone (O₃) and fine particle (PM_2.5) gas-phase precurso

SUBMITTER: He J 

PROVIDER: S-EPMC10785034 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature