未来条件下的臭氧和空气温度之间的关系:在中国四川盆地的一项案例研究
Ju Wang1, Juan Li1, Xinlong Li1
1Key Laboratory of Groundwater Resources and Environment (Jilin University), Ministry of Education, Changchun 130021, China; Jilin Provincial Key Laboratory of Water Resources and Water Environment, Jilin University, Changchun 130021, China; College of New Energy and Environment, Jilin University, Changchun 130012, China.
中国四川盆地的臭氧污染与气温上升有关. 高气候惩罚因子 (CPF) 表示臭氧在每摄氏度上升时显著增加,影响空气质量.
科学领域:
- 环境科学 环境科学
- 大气化学 大气化学
- 气候建模气候模型
背景情况:
- 由于独特的地形,四川盆地 (SCB) 在夏季经常受到臭氧 (O3) 污染.
- 关于SCB中的O3-空气温度关系的研究有限.
研究的目的:
- 调查O3度与SCB中的空气温度之间的关系.
- 在不同的未来情景下分析O3的气候惩罚因子 (CPF).
主要方法:
- 利用天气研究和预报模型与社区多层次空气质量 (WRF-CMAQ) 模型相结合.
- 为了进行详细的分析,将SCB分为四个城市聚集地.
- 根据SSP2-4.5情景 (NDC和当前) 审查了历史CPF (2015-2020) 和2030年的CPF预测.
主要成果:
- 臭氧主要在夏季较温暖的几个月,以东北风为伴,在西SCB积累.
- 西北城市聚集地显示了最高的O3 CPF,度增加了4.12-5.40ppb/°C.
- 2020年观察到的CPF平均值为3.64ppb/°C;预计2030年的平均值为1.152ppb/°C (NDC) 和1.269ppb/°C (当前).
结论:
- SCB表现出显著的O3温度关系,特别是在城市地区.
- 预计未来的O3水平将受到气候变化的影响,尽管在某些减排场景下,CPF可能会下降.
- 这些发现对于了解和减轻中国的O3污染至关重要.
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