自中国的清洁空气行动以来,人类和气象学调节的夏季臭氧趋势及其对健康的影响
Dan Yan1, Zhipeng Jin1, Yiting Zhou1
1School of Atmospheric Sciences, Nanjing University, Nanjing, 210023, China.
Environmental pollution (Barking, Essex : 1987)
|December 28, 2023
概括
在清洁空气行动的第一阶段,中国的高臭氧水平显著增加,这是由于排放造成的. 虽然前体的减少现在正在帮助,但极端天气加剧了臭氧污染,需要适应性策略.
科学领域:
- 环境科学 环境科学
- 大气化学 大气化学
- 公共卫生 公共卫生
背景情况:
- 升高的臭氧 (O3) 是中国的主要空气质量问题,抵消了减少污染带来的健康益处.
- 中国的清洁空气行动已经改变了臭氧化学体制,并增加了极端天气事件.
研究的目的:
- 分析2013-2022年中国夏季臭氧趋势.
- 评估人为排放和气象学对臭氧污染的影响.
- 评估臭氧水平变化的健康影响.
主要方法:
- 利用多个来源的观测和多个模型的计算.
- 研究了中国清洁空气行动的不同阶段的臭氧趋势.
- 应用流行病学模型来预测健康影响.
主要成果:
- 臭氧从2013年到2022年稳步增加,在I期比II期更快的速度 (4.4μg m−3 yr−1) (0.6μg m−3 yr−1).
- 臭氧污染主要是由第一阶段和第二阶段早期的非线性O3排放反应驱动的.
- 2019年以后,气象对臭氧的影响变得显著,相当于排放量.
- 预计每年由于改变排放而导致的额外死亡人数为0.8至3.0万人,气象学预计每年增加1.5至0.3万人.
结论:
- 需要严格的排放控制来减轻臭氧污染.
- 气候适应战略对于应对臭氧污染至关重要.
- 该研究强调了排放,气象和臭氧污染在中国的复杂相互作用.
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