基于多个地点和两个情节的观测,对成都平原城市聚集区的臭氧生产灵敏度分析
Ming Zhou1, Yuhan Liu2, Keding Lu1
1State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, China.
The Science of the total environment
|August 2, 2024
概括
在中国的臭氧污染.
科学领域:
- 大气化学 大气化学
- 环境科学 环境科学
- 空气质量研究 空气质量研究
背景情况:
- 成都平原城市聚集区 (CPUA) 面临严重的臭氧污染.
- 臭氧 (O3) 污染事件与太阳辐射,高温和前体排放有关.
研究的目的:
- 调查CPUA中的臭氧生产率和灵敏度.
- 确定城市,郊区和农村地区的臭氧形成制度.
主要方法:
- 在2019年夏天进行全面的现场观测.
- 使用基于观察的模型 (OBM) 来计算激素化学和臭氧生产率.
- 使用相对增量反应率 (RIR) 来识别污染机制.
主要成果:
- 记录了臭氧污染事件,每日最大8小时平均O3达到137.9ppbv.
- 在污染事件中计算OH,HO2和RO2激素度.
- 确定了地理差异化的臭氧制度:在城市/南部郊区限制VOC,在农村地区限制NOx,在北部郊区过渡.
结论:
- 光化学过程对于CPUA中臭氧的形成至关重要.
- 基于局部臭氧制度的定制控制策略至关重要.
- 地理差异化的方法可以避免一个适合所有污染控制战略的陷.
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