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气象学和排放变化的驱动力在华河流域的表面臭氧上,中国

Xiaoyong Liu^1,2, Hui Gao^1,2, Xiangmin Zhang^1,2

¹School of Geographic Sciences, Xinyang Normal University, Xinyang, 464000 China.

Water, air, and soil pollution

|June 5, 2023

概括

中国的表面臭氧污染主要是由排放变化造成的,而不仅仅是天气. 减少挥发性有机化合物 (VOC) 是控制HRB地区臭氧水平的关键.

科学领域:

环境科学环境科学
大气化学大气化学
空气质量研究空气质量研究

背景情况:

表面臭氧 (O3) 污染是中国的一个重大环境问题.
河北地区边境 (HRB) 区域是研究臭氧动态的关键区域.
了解臭氧污染的驱动因素对于有效的缓解策略至关重要.

研究的目的:

评估气象因素和排放变化对HRB表面臭氧的影响.
为了分解和分析每日平均8小时最大 (MDA8) 臭氧度的变化.
确定导致臭氧污染的关键因素,并制定减少战略.

主要方法:

将Kolmogorov-Zurbenko (KZ) 过器应用于2015-2020年的MDA8臭氧数据.
分解臭氧时间序列成短期 (O3ST),季节性 (O3SN) 和长期 (O3LT) 组件.
利用多重线性回归来分离空气温度对臭氧的影响.

主要成果:

季节性成分 (O3SN) 占臭氧变异的56.1%,其次是短期成分 (O3ST) 占34.2%.
据估计,排放变化是臭氧增加的主要驱动因素 (79.4%),气象学贡献了20.6%.
在MDA8臭氧和空气温度之间观察到7-34天的相位延迟.

结论:

排放变化,特别是挥发性有机化合物 (VOC),是造成HRB臭氧污染的主要因素.
季节性变化显著影响每日臭氧水平,观察到区域差异.
有针对性的减少VOC排放对于减轻未来HRB臭氧污染至关重要.

关键词:

排放变化排放变化华河河流盆地华河河流盆地 KZ过器可以过.气象学天气学表面臭氧的表面臭氧

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