气候变化领域集成服务门户(CCPortal): Ozone balances in urban Saudi Arabia

CCPortal

DOI	10.1038/s41612-018-0034-8
	Ozone balances in urban Saudi Arabia
	Khalil M.A.K.; Butenhoff C.L.; Harrison R.M.
发表日期	2018
ISSN	23973722
卷号	1 期号:1
英文摘要	Net ozone production rates averaging 130 ppb/h lasting 3–5 h are calculated for five cities of urban Saudi Arabia where hourly ozone and NO2 measurements were taken for a whole year. Concentrations of ozone in the cities are not unusually high at ~40 ppb during the peak 4 h, but are 50–60 ppb at altitude throughout the day. A mass balance of ozone reveals that the locations represented by the sites export ozone during the peak production periods before mid-day at average rates comparable to the net production, but later a substantial import of ozone is required to balance the budget. Concentrations of NO are high throughout the day (~14 ppb) and night (~11 ppb) and yet significant ozone concentrations remain during the night (~18 ppb). An explanation is that large amounts of ozone are generated in the surrounding areas and aloft by ozone precursors from the cities. It is brought back during the night by transport processes and reacts with fresh emissions of NO driven by nightlife resulting in an outflow of NO2 to create the observed balances. Over the whole day, the regions represented by the sites are net sinks of ozone. We describe and support this picture of ozone balances in urban Saudi Arabia. © 2018, The Author(s).
语种	英语
scopus关键词	concentration (composition); nitrogen dioxide; nitrogen oxides; ozone; urban area; Saudi Arabia
来源期刊	npj Climate and Atmospheric Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/178147
作者单位	Department of Physics, Portland State University, P.O.Box 751, Portland, OR 97207, United States; School of Geography, Earth and Environmental Sciences, University of Birmingham, UK and Department of Environmental Sciences, Center of Excellence in Environmental Studies, King Abdulaziz University, P.O.Box 80203, Jeddah, Saudi Arabia
推荐引用方式 GB/T 7714	Khalil M.A.K.,Butenhoff C.L.,Harrison R.M.. Ozone balances in urban Saudi Arabia[J],2018,1(1).
APA	Khalil M.A.K.,Butenhoff C.L.,&Harrison R.M..(2018).Ozone balances in urban Saudi Arabia.npj Climate and Atmospheric Science,1(1).
MLA	Khalil M.A.K.,et al."Ozone balances in urban Saudi Arabia".npj Climate and Atmospheric Science 1.1(2018).