京津冀地区臭氧与温度的关系研究

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摘要为探究气象条件对臭氧(O₃)长期变化趋势的影响,基于京津冀地区多站点长时间序列污染物和气象观测数据对两种气候惩罚因子进行统计分析.结果表明,2016年之后,京津冀地区O₃对温度的敏感性增强.对比2016年前后两个时期(2010~2015年,P2;2016~2020年,P3)的区域气象条件发现高温是导致这种现象的主要气象原因.P3时期的高温日数出现频率比P2时期偏高0.6%~5.1%,而这种高温日的频繁发生与京津冀地区在P3时期受焚风影响增多有关.P3阶段具备焚风发生条件的日数频率是P2时期的2.7倍,焚风条件下高温天气的发生频率是非焚风条件下的1.0~1.9倍.这种O₃对温度的敏感性增强意味着一旦气象条件有利于O₃污染的发生,O₃浓度会在短时间内达到与温度相关的最大反应速率,从而使高浓度O₃维持更长时间.与北京相比,京津冀其他地区的O₃污染形势更为严峻,需持续加强区域污染的联防联治,协同减排.

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	朱晓婉
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	马志强

关键词 ：臭氧, 温度, 焚风, 气候惩罚因子

Abstract：To investigate the influence of meteorological conditions on long-term ozone (O₃) trends, two climate penalty factors were analyzed with observed pollutant and meteorological data from multiple stations in the Beijing-tianjin-hebei region. Results demonstrated that the sensitivity of O₃ to temperature enhanced after 2016. Compared the two periods before and after 2016 (2010~2015, P2; 2016~2020, P3), we found that high-temperature weather contributed to this phenomenon. The frequency in high-temperature days in the P3 period was 0.6%~5.1% higher than that in the P2 period, which was related to the enhanced influence of foehn on the plain areas during the P3period. The occurrence frequency of foehn in the P3stage was 2.7 times higher than that in the P2 stage, and the occurrence frequency of high-temperature weather under the foehn condition was 1.0~1.9times higher than that under the non-foehn condition. The enhanced sensitivity of O₃ to temperature indicated that once the meteorological conditions are favorable for O₃ pollution, the O₃ concentration will peak in a short time, and the high concentration of O₃ can be maintained for a longer time. In contrast to Beijing, pollution in other areas of the Beijing-tianjin-hebei region was severer than Beijing, and joint prevention need to be continuously strengthened.

Key words： ozone temperature foehn climate penalty factor

收稿日期: 2024-02-18

PACS:

X51

基金资助:国家自然科学基金资助项目(42207115,42275199,42307150)

通讯作者: 马志强,研究员,zqma@ium.cn E-mail: zqma@ium.cn

作者简介: 朱晓婉(1990-),女,辽宁营口人,副研究员,博士,主要研究方向为大气环境与大气物理.发表论文10余篇.zxw15001298718@163.com.

引用本文:

朱晓婉, 刘湘雪, 吴进, 邱雨露, 李颖若, 马志强. 京津冀地区臭氧与温度的关系研究[J]. 中国环境科学, 2024, 44(9): 4778-4785. ZHU Xiao-wan, LIU Xiang-xue, WU Jin, QIU Yu-lu, LI Ying-ruo, MA Zhi-qiang. Investigations of relationship between surface ozone and temperature in the Beijing-tianjin-hebei region. CHINA ENVIRONMENTAL SCIENCECE, 2024, 44(9): 4778-4785.

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http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2024/V44/I9/4778

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