气候变化领域集成服务门户(CCPortal): Summertime ozone pollution in China affected by stratospheric quasi-biennial oscillation

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DOI	10.5194/acp-23-1533-2023
	Summertime ozone pollution in China affected by stratospheric quasi-biennial oscillation
	Li, Mengyun; Yang, Yang; Wang, Hailong; Li, Huimin; Wang, Pinya; Liao, Hong
发表日期	2023
ISSN	1680-7316
EISSN	1680-7324
起始页码	1533
结束页码	1544
卷号	23 期号:2 页码:12
英文摘要	In recent years, the near-surface ozone (O-3) level has been rising fast in China, with increasing damage to human health and ecosystems. In this study, the impact of stratospheric quasi-biennial oscillation (QBO) on interannual variations in summertime tropospheric O-3 over China is investigated based on GEOS-Chem model simulations and satellite retrievals. QBO has a significant positive correlation with near-surface O3 concentrations over central China (92.5-112.5 degrees E, 26-38 degrees N) when the sea surface temperature (SST) over the eastern tropical Pacific is warmer than normal, with a correlation coefficient of 0.53, but QBO has no significant effect on O-3 under the cold SST anomaly. Compared to the easterly phase of QBO, the near-surface O-3 concentrations have an increase of up to 3 ppb (5 % relative to the average) over central China during its westerly phase under the warm SST anomaly. O-3 also increases above the surface and up to the upper troposphere, with a maximum increase of 2-3 ppb (3 %-5 %) in 850-500 hPa over central China when comparing westerly phase to easterly phase. Process-based analysis and sensitivity simulations suggest that the O-3 increase over central China is mainly attributed to the anomalous downward transport of O-3 during the westerly phase of QBO when a warm SST anomaly occurs in the eastern tropical Pacific, while the local chemical reactions and horizontal transport processes partly offset the O-3 increase. This work suggests a potentially important role of QBO and the related vertical transport process in affecting near-surface O-3 air quality, with an indication for O-3 pollution prediction and prevention.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000920277900001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273247
作者单位	Nanjing University of Information Science & Technology; United States Department of Energy (DOE); Pacific Northwest National Laboratory
推荐引用方式 GB/T 7714	Li, Mengyun,Yang, Yang,Wang, Hailong,et al. Summertime ozone pollution in China affected by stratospheric quasi-biennial oscillation[J],2023,23(2):12.
APA	Li, Mengyun,Yang, Yang,Wang, Hailong,Li, Huimin,Wang, Pinya,&Liao, Hong.(2023).Summertime ozone pollution in China affected by stratospheric quasi-biennial oscillation.ATMOSPHERIC CHEMISTRY AND PHYSICS,23(2),12.
MLA	Li, Mengyun,et al."Summertime ozone pollution in China affected by stratospheric quasi-biennial oscillation".ATMOSPHERIC CHEMISTRY AND PHYSICS 23.2(2023):12.