气候变化领域集成服务门户(CCPortal): Impact of eastern and central Pacific El Nino on lower tropospheric ozone in China

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DOI	10.5194/acp-22-7273-2022
	Impact of eastern and central Pacific El Nino on lower tropospheric ozone in China
	Jiang, Zhongjing; Li, Jing
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	7273
结束页码	7285
卷号	22 期号:11 页码:13
英文摘要	Tropospheric ozone, as a critical atmospheric component, plays an important role in influencing radiation equilibrium and ecological health. It is affected not only by anthropogenic activities but also by natural climate variabilities. Here we examine the tropospheric ozone changes in China associated with the eastern Pacific (EP) and central Pacific (CP) El Nino using satellite observations from 2007 to 2017 and GEOS-Chem simulations from 1980 to 2017. GEOS-Chem reasonably reproduced the satellite-retrieved lower tropospheric ozone (LTO) changes despite a slight underestimation. In general, both types of El Nino exert negative impacts on LTO concentration in China, except for southeastern China during the pre-CP El Nino autumn and post-EP El Nino summer. Ozone budget analysis further reveals that for both events, LTO changes are dominated by the transport processes controlled by circulation patterns and the chemical processes influenced by local meteorological anomalies associated with El Nino, especially the changes in solar radiation and relative humidity. The differences between EP- and CP-induced LTO changes mostly lie in southern China. The different strengths, positions, and duration of the western North Pacific anomalous anticyclone induced by tropical warming are likely responsible for the different EP and CP LTO changes. During the post-EP El Nino summer, the Indian Ocean capacitor effect also plays an important role in mediating LTO changes over southern China.
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:000806966600001
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/273495
作者单位	Peking University
推荐引用方式 GB/T 7714	Jiang, Zhongjing,Li, Jing. Impact of eastern and central Pacific El Nino on lower tropospheric ozone in China[J],2022,22(11):13.
APA	Jiang, Zhongjing,&Li, Jing.(2022).Impact of eastern and central Pacific El Nino on lower tropospheric ozone in China.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(11),13.
MLA	Jiang, Zhongjing,et al."Impact of eastern and central Pacific El Nino on lower tropospheric ozone in China".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.11(2022):13.