气候变化领域集成服务门户(CCPortal): Effects of synoptic patterns on the vertical structure of ozone in Hong Kong using lidar measurement

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DOI	10.1016/j.atmosenv.2021.118490
	Effects of synoptic patterns on the vertical structure of ozone in Hong Kong using lidar measurement
	Lin C.; Leung K.K.M.; Yu A.L.C.; Tsang R.C.W.; Tsui W.B.C.; Fung J.C.H.; Ng E.K.W.; Cheung S.L.; Tang A.W.Y.; Ning Z.; Li Y.; Zhang T.; Lau A.K.H.
发表日期	2021
ISSN	1352-2310
卷号	257
英文摘要	Long-term ozone lidar routine measurements are sparse in China. In this study, we used one year of continuous ozone lidar measurements to systematically investigate the effects of synoptic patterns on the vertical structure of ozone during high ozone episodes in Hong Kong. The height of the near-surface ozone layer was identified and compared with that of the mixing layer. The results showed that Hong Kong was greatly affected by ozone transport from the Pearl River Delta region when a tropical cyclone (“C” pattern) or a trough (“T” pattern) existed. When a high-pressure center was located to the north (“H” pattern) or when both a high-pressure system and a tropical cyclone existed (“CH” pattern), Hong Kong was affected by ozone transport from southeastern or southern China. Substantial amounts of ozone were transported within a layer near the ground with an average height of 0.83, 0.75, 0.94, and 0.85 km under the C, H, CH, and T synoptic patterns, respectively. Variation in the near-surface ozone layer height was consistent with that of the mixing layer height. Weak vertical mixing resulted in a shallow near-surface ozone layer under the C and H synoptic patterns. Due to the combined effect of near-surface transport and suppressed vertical mixing, the ozone concentrations were extremely high near the ground but rapidly declined with height under the C synoptic pattern. Our investigations of the vertical structure of ozone contribute to filling the knowledge gap between synoptic patterns and the evolution of high surface ozone episodes. © 2021 Elsevier Ltd
关键词	Horizontal transport Lidar Meteorology Ozone Vertical mixing
语种	英语
scopus关键词	Mixing; Optical radar; Ozone layer; Storms; Tropics; Hong-kong; Horizontal transport; Lidar measurements; Near surfaces; Ozone episodes; Ozone transport; Surface ozone; Tropical cyclone; Vertical mixing; Vertical structures; Ozone; ozone; concentration (composition); lidar; measurement method; ozone; spatiotemporal analysis; synoptic meteorology; tropical cyclone; vertical mixing; air pollutant; air pressure; air quality; air quality standard; Article; boundary layer; controlled study; dispersion; forecasting; Hong Kong; hurricane; meteorology; ozone layer; priority journal; weather; wind speed; China; Hong Kong; Zhujiang Delta
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/248388
作者单位	Division of Environment and Sustainability, The Hong Kong University of Science and Technology, Hong Kong; Air Science Group, Environmental Protection Department, Hong Kong Government SAR, Hong Kong; PTC International Limited, Hong Kong; Department of Mathematics, The Hong Kong University of Science and Technology, Hong Kong; Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Hong Kong University of Science & Technology, Clear Water Bay, Hong Kong; Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen, China; Key Laboratory of Environment Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, Anhui, China; Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong
推荐引用方式 GB/T 7714	Lin C.,Leung K.K.M.,Yu A.L.C.,et al. Effects of synoptic patterns on the vertical structure of ozone in Hong Kong using lidar measurement[J],2021,257.
APA	Lin C..,Leung K.K.M..,Yu A.L.C..,Tsang R.C.W..,Tsui W.B.C..,...&Lau A.K.H..(2021).Effects of synoptic patterns on the vertical structure of ozone in Hong Kong using lidar measurement.ATMOSPHERIC ENVIRONMENT,257.
MLA	Lin C.,et al."Effects of synoptic patterns on the vertical structure of ozone in Hong Kong using lidar measurement".ATMOSPHERIC ENVIRONMENT 257(2021).