| Interannual evolution of the chemical composition,sources and processes of PM2.5 in Chengdu,China:Insights from observations in four winters |
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| 作者姓名： | Junke Zhang Jiaqi Li Yunfei Su Chunying Chen Luyao Chen Xiaojuan Huang Fangzheng Wang Yawen Huang Gehui Wang |
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| 作者单位： | 1. Faculty of Geosciences and Environmental Engineering,Southwest Jiaotong University;2. Department of Environmental Science&Engineering,Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3),Fudan University;3. Key Lab of Geographic Information Science of the Ministry of Education,School of Geographic Sciences,East China Normal University |
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| 基金项目： | supported by the National Natural Science Foundation of China (Nos.42205100 and 41805095)；;the Sichuan Science and Technology Program (Nos.2019YFS0476and 2022NSFSC0982)； |
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| 摘 要： | The air quality in China has improved significantly in the last decade and,correspondingly,the characteristics of PM2.5have also changed.We studied the interannual variation of PM2.5in Chengdu,one of the most heavily polluted megacities in southwest China,during the most polluted season (winter).Our results show that the mass concentrations of PM2.5decreased significantly year-by-year,from 195.8±91.0μg/m3in winter 2016 to 96.1±39.3μg/m3in wi...
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