台风持续影响下中山市大气O<sub>3</sub>污染过程分析

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摘要应用三维空气质量模型（Model-3/CMAQ）和积分过程速率（IPR）分析工具对2017年7月22~31日夏季4次台风持续影响下中山市7月首次出现的持续6d的O₃污染事件进行了详细分析，识别了O₃ 8h浓度最大值时段主导的大气物理过程和大气化学过程，并计算了不同源、汇过程对本地O₃浓度的贡献.研究结果表明，污染时段化学过程对O₃的源贡献高于非污染时段，化学过程贡献增加，说明光化学反应过程更加活跃；台风带来的外来气团经过上风向高污染物排放区域时，化学过程贡献显著上升，与非经过高污染物排放区域相比，污染时段的化学过程对中山市O₃源过程的浓度贡献高2.4%~6.5%；污染时段，水平输送对中山市大气O₃源过程的浓度贡献在56.6%~92.6%之间.因此，污染期间强化本地排放源的管控，减少O₃生成贡献的同时，结合区域气团路径分析，精准识别污染协同管控区域，上风向污染物高排放区域实施协同减排措施，实现区域联防联控.

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	赵文龙
	张春林
	李云鹏
	杨军
	陈雅秋
	王好
	王瑜
	王少霞
	邵世云
	王伯光

关键词 ：空气质量模型, 过程分析, O₃, 后向轨迹

Abstract：The three-dimensional air quality model (Model-3/CMAQ) coupled with the Integrated Process Rate (IPR) analysis tool was applied to analyze the ozone pollution process which lasted for six days in Zhongshan under the continuous influence of the four typhoons in the summer from July 22 to 31, 2017. The dominant physical and chemical processes of maximum 8-hour ozone were further investigated, and the contributions of different sources and sinks to ozone concentration were quantified by IPR. The results showed that due to the continuous impact of typhoons, the proportion of source contribution to ozone by chemical process was higher during the pollution period than that of non-pollution period, indicating more active photochemical reactions during the pollution period. Furthermore, under the impact of typhoons, the contribution of chemical process increased significantly when the air mass from high pollution emitted area was 2.4%~6.5% higher than that of low pollution emitted area. At last, horizontal transport took the largest contribution to ozone source process, with the scale of 56.6%~92.6%. Therefore, in addition to the strict local emission control, the regional joint prevention which was combined with the path analysis of regional air mass, precise identification of high pollution areas, and the coordinated emission reduction measures in the upwind areas, could be more effective to improve the air quality.

Key words： air quality model process analysis ozone backward trajectory

收稿日期: 2021-06-01

PACS:	X513
	X16

基金资助:国家重点研发计划（2018YFC0213600）；广东省科技创新平台类项目（2019B121202002）；国家自然科学基金资助项目（42077190）

通讯作者: 王伯光,教授,tbongue@jnu.edu.cn E-mail: tbongue@jnu.edu.cn

作者简介: 赵文龙(1990-),男,安徽阜阳人,主要从事大气环境过程模拟研究.发表论文2篇.

引用本文:

赵文龙, 张春林, 李云鹏, 杨军, 陈雅秋, 王好, 王瑜, 王少霞, 邵世云, 王伯光. 台风持续影响下中山市大气O₃污染过程分析[J]. 中国环境科学, 2021, 41(12): 5531-5538. ZHAO Wen-long, ZHANG Chun-lin, LI Yun-peng, YANG Jun, CHEN Ya-qiu, WANG Hao, WANG Yu, WANG Shao-xia, SHAO Shi-yun, WANG Bo-guang. Analysis of the ozone pollution process in Zhongshan under the continuous influence of typhoons. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(12): 5531-5538.

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http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2021/V41/I12/5531

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