Research on the Distribution Characteristics and Health Effects of O3 in the Fenwei Plain

In recent years, coal-combustion-related air pollution has declined markedly, whereas tropospheric ozone (O3) pollution has emerged as a growing environmental concern. Long-term exposure to O3 can severely impact human health and ecosystems, constraining socioeconomic development. The Fenwei Plain has complex topographical conditions and a relatively simple industrial structure, and at present, O3 is one of the main pollutants affecting air quality in this region. Therefore, studying the distribution of O3 pollution in the Fenwei Plain can provide a reference for developing plans to control O3 pollution in the area, which is important for safeguarding local public health and economic development. Currently, the number of pollutant monitoring stations in China is limited, spatially discontinuous, and significantly affected by environmental factors, making it difficult to obtain high-precision, large-scale observational data. Satellite-based remote sensing provides broad spatial coverage and is free from topographic constraints, thereby serving as an effective complement to ground-based monitoring networks. This provides important technical support for studying the distribution characteristics of O3 pollution and its associated health risks. This study focuses on the Fenwei Plain, utilizing machine learning models to estimate continuous O3 concentrations from 2015 to 2022 and analyze the spatiotemporal distribution of O3. Based on this, an assessment and analysis of the health risks associated with near-surface O3 exposure in the study area will be conducted, incorporating the population exposed in the Fenwei Plain and individuals with chronic obstructive pulmonary disease (COPD).