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| DOI | 10.1016/j.atmosenv.2020.117808 |
| Modulations of synoptic and climatic changes on ozone pollution and its health risks in mountain-basin areas | |
| Ning G.; Yim S.H.L.; Yang Y.; Gu Y.; Dong G. | |
| 发表日期 | 2020 |
| ISSN | 1352-2310 |
| 卷号 | 240 |
| 英文摘要 | Ozone (O3) pollution in China tends to become increasingly severe despite recent emission reductions. O3 is sensitive to atmospheric conditions, but its modulations by changing synoptic systems and climate are unclear, especially in mountain-basin areas such as the Sichuan Basin (SCB). This study examines the impacts of typical synoptic systems and their secular changes on O3 pollution and its health risks in mountain-basin areas, by taking SCB as an example. Seven dominant synoptic patterns are identified and three typical synoptic patterns with high- (low-) pressure are associated with high (low) O3 concentrations over entire SCB, while the pattern with uniform-pressure is accompanied by heavy (light) pollution in western (eastern) SCB. Under the synoptic patterns with high-pressure, clear weather with fewer clouds, strong solar radiation, weak convection, and hot and dry atmosphere enhances the photochemical reactions of O3 precursors and weakens the vertical mixing of O3 and its precursors, thus favoring heavy O3 pollution and posing higher health risks; whereas, the synoptic patterns with low-pressure induce the opposite changes in O3 concentration and health risks. The uniform-pressure pattern is accompanied by district spatial variations of O3 via favoring O3-related physical and chemical processes in eastern SCB and inhibiting that in the west. Under climatic changes, increasing synoptic pattern with high-pressure and decreasing synoptic pattern with low-pressure over SCB significantly increased O3 concentration and the resultant health risks over the past 40 years. Our findings provide scientific evidence from synoptic and climatic views for forecasting O3 and its health risks and for mitigating O3 pollution in mountain-basin areas. © 2020 Elsevier Ltd |
| 关键词 | Climatic changesHealth risksOzone pollutionSichuan BasinSynoptic patterns |
| 语种 | 英语 |
| scopus关键词 | Emission control; Health; Health risks; Landforms; Modulation; Ozone; Photochemical reactions; Atmospheric conditions; Chemical process; Climatic changes; Emission reduction; Scientific evidence; Spatial variations; Synoptic systems; Uniform pressure; Air pollution; ozone; atmospheric pollution; climate change; climate conditions; health risk; mountain region; ozone; pollution exposure; public health; spatial variation; air quality; Article; atmosphere; cardiovascular mortality; chemical reaction; circadian rhythm; climate change; cloud; health hazard; human; humidity; meteorology; pollution; priority journal; solar radiation; weather; China; Sichuan Basin |
| 来源期刊 | ATMOSPHERIC ENVIRONMENT
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| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/248974 |
| 作者单位 | Institute of Environment, Energy and Sustainability, The Chinese University of Hong Kong, Hong Kong, Hong Kong; Department of Geography and Resource Management, The Chinese University of Hong Kong, Hong Kong, Hong Kong; Stanley Ho Big Data Decision Analytics Research Centre, The Chinese University of Hong Kong, Hong Kong, Hong Kong; School of Atmospheric Physics, Nanjing University of Information Science & Technology, Nanjing, China; Guangdong Provincial Engineering Technology Research Center of Environmental Pollution and Health Risk Assessment, Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, Guangzhou, China |
| 推荐引用方式 GB/T 7714 | Ning G.,Yim S.H.L.,Yang Y.,et al. Modulations of synoptic and climatic changes on ozone pollution and its health risks in mountain-basin areas[J],2020,240. |
| APA | Ning G.,Yim S.H.L.,Yang Y.,Gu Y.,&Dong G..(2020).Modulations of synoptic and climatic changes on ozone pollution and its health risks in mountain-basin areas.ATMOSPHERIC ENVIRONMENT,240. |
| MLA | Ning G.,et al."Modulations of synoptic and climatic changes on ozone pollution and its health risks in mountain-basin areas".ATMOSPHERIC ENVIRONMENT 240(2020). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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