京津冀臭氧变化特征及与气象要素的关系

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摘要

基于2014~2017年京津冀13座城市的O₃-8h数据，分析O₃时间变化特征及污染状况.在此基础上，结合同期气象数据研究近地层O₃浓度与气象要素的关系.结果表明：2014~2017年京津冀区域O₃-8h整体呈上升趋势，增长率为4.50μg/m³.区域内O₃污染整体加重，北京、保定O₃污染较为严重；2014~2015年O₃浓度与超标情况的月变化主要呈单峰型变化，峰值出现在5月；而2016~2017年为不规则双峰型变化，峰值出现在5~6月和9月.与气象因子的相关性表明：气象要素对O₃的影响具有明显的季节差异，其中春、夏、秋季气温是影响O₃浓度变化的主要因素，而在冬季相对湿度与风速为影响O₃浓度变化的主要因素.此外，分析表明北京、天津、石家庄3大城市夏季形成高浓度O₃的阈值明显不同.

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关键词 ：京津冀区域, O₃浓度, O₃污染, 气象因子

Abstract：

Based on the O₃-8h data of 13 cities in Beijing-Tianjin-Hebei region from 2014 to 2017, the temporal variation and pollution characteristics of O₃ were analyzed. In addition, the relationship between the O₃ concentration and the meteorological factors was studied by combining with the meteorological data of the same period. O₃-8h in Beijing-Tianjin-Hebei region increased from 2014~2017, with an average annual increase of 4.50μg/m³.O₃ pollution situation in the whole region aggravated, especially in Beijing and Baoding. The monthly O₃ concentration and the over-standard situation mainly presented single-peak variations in 2014~2015, with the maximum in May. However, the irregular double-peak variations were found in 2016~2017,showing one peak value during May to June and the other in September. The correlation between O₃ concentration and meteorological factors indicated that the influence of meteorological factors on O₃ had obvious seasonal differences. In spring, summer and autumn, the temperature was the main factor affecting O₃ concentration, while the relative humidity and wind speed were the main factors in winter. Besides, it is indicted that the thresholds for the formation of high O₃ concentration in Beijing, Tianjin and Shijiazhuang were different in summer.

Key words： Beijing-Tianjin-Hebei region O₃ concentration O₃ pollution meteorological factors

收稿日期: 2018-12-07

PACS:

X511

基金资助:

总理基金大气污染控制项目（DQGG0104）

通讯作者: 柳艳菊,正研级高工,liuyanj@cma.gov.cn E-mail: liuyanj@cma.gov.cn

作者简介: 王玫(1996-),女,山西原平人,南京信息工程大学大气物理学院硕士研究生,主要从事大气环境研究.

引用本文:

王玫, 郑有飞, 柳艳菊, 李巧萍, 丁一汇. 京津冀臭氧变化特征及与气象要素的关系[J]. 中国环境科学, 2019, 39(7): 2689-2698. WANG Mei, ZHENG You-fei, LIU Yan-ju, LI Qiao-ping, DING Yi-hui. Characteristics of ozone and its relationship with meteorological factors in Beijing-Tianjin-Hebei Region. CHINA ENVIRONMENTAL SCIENCECE, 2019, 39(7): 2689-2698.

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http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2019/V39/I7/2689

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