气候变化领域集成服务门户(CCPortal): A modeling study of the impact of stratospheric intrusion on ozone enhancement in the lower troposphere over the Hong Kong regions, China

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DOI	10.1016/j.atmosres.2020.105158
	A modeling study of the impact of stratospheric intrusion on ozone enhancement in the lower troposphere over the Hong Kong regions, China
	Zhao K.; Hu C.; Yuan Z.; Xu D.; Zhang S.; Luo H.; Wang J.; Jiang R.
发表日期	2021
ISSN	0169-8095
卷号	247
英文摘要	Stratospheric intrusion is of great importance to transporting ozone (O3)-enriched air from stratosphere into the middle and lower troposphere. The Weather Research and Forecasting model coupled with Chemistry (WRF-Chem) was employed to simulate a typical stratospheric intrusion episode occurring on March 24, 2010 and examine the impact of stratospheric intrusion on the O3 enhancement in the lower troposphere. An upper boundary condition scheme was applied to the simulations to overcome the limitation of WRF-Chem in which O3 chemistry in the stratosphere is not included. The simulations were evaluated with various observational data including O3 sounding, surface O3, as well as the European Centre for Medium-Range Weather Forecasts (ECMWF) ERA-Interim reanalysis data. The WRF-Chem showed reasonable performance on simulating the meteorological processes that control the stratospheric intrusion. Several findings were identified from the detailed analyses of the modeling results. First, the subtropical high-level jet was responsible for this stratospheric intrusion event. When Hong Kong was located at the south side of the subtropical jet where subsidence was dominated, the O3-enriched air was transported from stratosphere to troposphere. Second, the stratospheric intrusion caused substantial enhancement of O3 with the maximum O3 concentration higher than 80.0 ppbv in the lower above the atmospheric boundary layer in the Hong Kong region. Finally, the process analyses (PA) method is performed to quantify the impact of stratosphere intrusion on the O3 enhancement in the lower troposphere. The PA result illustrates that a substantial increase in the lower troposphere O3 is highly associated with vertical transport from the upper troposphere. These results indicated important role of stratospheric intrusion on O3 enhancement events and more observations are advised to better constrain and quantify its effects. © 2020
英文关键词	Ozone; Stratospheric intrusion; The South China region; WRF-Chem
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/236929
作者单位	School of Environment and Energy, South China University of Technology, Guangzhou, China; College of Biology and the Environment, Joint Center for sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, 210037, China; Yale-NUIST Center on Atmospheric Environment, International Joint Laboratory on Climate and Environment Change (ILCEC)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD), Nanjing University of Information Science & Technology, Nanjing, China; Xianyang Meteorological Bureau, Xianyang, Shaanxi Province, China
推荐引用方式 GB/T 7714	Zhao K.,Hu C.,Yuan Z.,et al. A modeling study of the impact of stratospheric intrusion on ozone enhancement in the lower troposphere over the Hong Kong regions, China[J],2021,247.
APA	Zhao K..,Hu C..,Yuan Z..,Xu D..,Zhang S..,...&Jiang R..(2021).A modeling study of the impact of stratospheric intrusion on ozone enhancement in the lower troposphere over the Hong Kong regions, China.Atmospheric Research,247.
MLA	Zhao K.,et al."A modeling study of the impact of stratospheric intrusion on ozone enhancement in the lower troposphere over the Hong Kong regions, China".Atmospheric Research 247(2021).