Evidence for Coordinated Control of PM_2.5 and O₃: Long-Term Observational Study in a Typical City of Central Plains Urban Agglomeration.

ABSTRACT: Fine particulate matter (PM_2.5) and Ozone (O₃) pollution have emerged as the primary environmental challenges in China in recent years. Following the implementation of the Air Pollution Prevention and Control Action Plan, a substantial decline in PM_2.5 concentrations was observed, while O₃ concentrations exhibited an increasing trend across the country. Here, we investigated the long-term trend of O₃ from 2015 to 2022 in Xinxiang City, a typical city within the Central Plains urban agglomeration. Our findings indicate that the hourly average O₃ increased by 3.41 μg m^-3 yr^-1, with the trend characterized by two distinct phases (Phase I, 2015-2018; Phase II, 2019-2022). Interestingly, the increasing rate

SUBMITTER: Jia C 

PROVIDER: S-EPMC12116060 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature