气候变化领域集成服务门户(CCPortal): Impacts of meteorological conditions on nocturnal surface ozone enhancement during the summertime in Beijing

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DOI	10.1016/j.atmosenv.2020.117368
	Impacts of meteorological conditions on nocturnal surface ozone enhancement during the summertime in Beijing
	Zhu X.; Ma Z.; Li Z.; Wu J.; Guo H.; Yin X.; Ma X.; Qiao L.
发表日期	2020
ISSN	1352-2310
卷号	225
英文摘要	The ozone (O3) concentration usually exhibits a secondary maximum at night in Beijing. To investigate the characteristics and reasons behind this nocturnal O3 increase (NOI), surface O3 and meteorological parameters, combined with wind profile data at the Haidian and Daxing stations were utilized and analyzed in this study. We identified 35 city-wide NOI episodes during the summertime (May to September) from 2014 to 2015. A total of 88.9% of these NOI cases occurred after midnight, and more than half of the nocturnal secondary O3 maxima (NSOM) ranged from 45 to 85 μg/m3. When compared with the previous daytime maximum O3 concentration, 72.2% of the NSOM could account for more than 40.0% of the daytime O3 maxima. The nocturnal O3 concentration in northern suburban areas was 18.7% higher than that in urban areas before a nocturnal O3 increase, and this contrast reduced under the effect of vertical transport of O3 during the NOI period. The reasons for such a downward transport of O3 involved two mechanisms: downdrafts in convective storms and boundary layer low-level jets. © 2020
关键词	Beijing Convective storm LLJ Nocturnal O3 Wind profile
语种	英语
scopus关键词	Boundary layer flow; Boundary layers; Near field scanning optical microscopy; Ozone; Storms; Beijing; Convective storms; Meteorological condition; Meteorological parameters; Nocturnal O3; Suburban areas; Vertical transports; Wind profiles; Urban transportation; ozone; boundary layer; climate conditions; climate effect; concentration (composition); convective system; jet flow; ozone; storm; suburban area; summer; wind profile; advection; air monitoring; air quality; airflow; Article; boundary layer; China; concentration (parameter); environmental temperature; humidity; meteorology; precipitation; priority journal; sea level; suburban area; summer; surface property; troposphere; urban area; water vapor; wind speed; Beijing [China]; China; Daxing; Haidian
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/249266
作者单位	Institute of Urban Meteorology, China Meteorological Administration, Beijing, 100089, China; Beijing Shangdianzi Regional Atmosphere Watch Station, Beijing, China
推荐引用方式 GB/T 7714	Zhu X.,Ma Z.,Li Z.,et al. Impacts of meteorological conditions on nocturnal surface ozone enhancement during the summertime in Beijing[J],2020,225.
APA	Zhu X..,Ma Z..,Li Z..,Wu J..,Guo H..,...&Qiao L..(2020).Impacts of meteorological conditions on nocturnal surface ozone enhancement during the summertime in Beijing.ATMOSPHERIC ENVIRONMENT,225.
MLA	Zhu X.,et al."Impacts of meteorological conditions on nocturnal surface ozone enhancement during the summertime in Beijing".ATMOSPHERIC ENVIRONMENT 225(2020).