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[在南京地区静态和稳定的天气条件下局部臭氧污染的光化学原因]

Jie He¹, Jun-Lin An¹, Yue-Zheng Feng²

¹Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science and Technology, Nanjing 210044, China.

Huan jing ke xue= Huanjing kexue

|February 18, 2025

概括

在稳定的天气下,臭氧污染是由当地的化学因素驱动的. 减少当地排放是减轻臭氧 (O3) 污染的关键,正如分析挥发性有机化合物和空气污染物所表明的那样.

科学领域:

大气化学大气化学
空气污染研究研究
环境科学环境科学

背景情况:

臭氧 (O3) 污染是空气质量的一个重大问题,特别是在稳定的气象条件下.
了解臭氧生成和消耗的机制对于有效的污染控制战略至关重要.
稳定的天气条件可以通过将污染物在地面附近而加剧空气污染.

研究的目的:

调查在南京有稳定的天气的污染天气中臭氧生成和消耗机制.
在稳定的条件下分析当地的光化学对臭氧污染的影响.
确定有助于臭氧形成和破坏的关键化学反应.

主要方法:

利用了挥发性有机化合物 (VOC),常规空气污染物的观测数据和2015-2021年ERA5气象数据.
采用基于观察的模型 (OBM-MCM) 来模拟臭氧生成和消耗过程.
分析了来自三个地点的数据:高门 (CCM),普库 (PK) 和林大学城 (XL).

主要成果:

在臭氧污染的日子里,观察到稳定的天气频率每年有显著的变化.
各个地点的净臭氧生产率有所不同,CCM显示最高,XL显示最低.
HO2·+NO反应是臭氧生产的主要驱动因素 (68-71%),而OH+NO2则主导了臭氧消耗 (62-67%).

结论:

在南京稳定的天气下,臭氧污染主要受到当地光化学过程的影响.
地方减排战略对于有效减轻臭氧污染至关重要.
该研究强调了特定地点分析对于理解复杂大气化学的重要性.

关键词:

MCM 盒子模型的模型.南京的南京,就是南京.空气停滞,空气停滞.臭氧污染臭氧污染臭氧的生产和消耗.

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