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Ozone Production in the Megacities of Tianjin and Shanghai, China: a Comparative Study : Volume 12, Issue 4 (10/04/2012)

By Ran, L.

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Book Id: WPLBN0003983085
Format Type: PDF Article :
File Size: Pages 34
Reproduction Date: 2015

Title: Ozone Production in the Megacities of Tianjin and Shanghai, China: a Comparative Study : Volume 12, Issue 4 (10/04/2012)  
Author: Ran, L.
Volume: Vol. 12, Issue 4
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Han, M., Zhao, C. S., Chen, J., Han, S. Q., Xu, W. Y., Geng, F. H.,...Xu, X. B. (2012). Ozone Production in the Megacities of Tianjin and Shanghai, China: a Comparative Study : Volume 12, Issue 4 (10/04/2012). Retrieved from

Description: Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing, China. Rapid economic growth has given rise to a significant increase in ozone precursor emissions in many regions of China, especially in the densely populated North China Plain (NCP) and Yangtze River Delta (YRD). Improved understanding of ozone formation in response to different precursor emissions is imperative to address the highly nonlinear ozone problem and to provide a solid scientific basis for efficient ozone abatement in these regions. A comparative study on ozone photochemical production in summer has thus been carried out in the megacities of Tianjin (NCP) and Shanghai (YRD). Two intensive field campaigns were carried out respectively at an urban and a suburban site of Tianjin, in addition to routine monitoring of trace gases in Shanghai, providing data sets of surface ozone and its precursors including nitrogen oxides (NOx) and various volatile organic compounds (VOCs). Ozone pollution was found to be more severe in Tianjin than in Shanghai during the summer, either based on the frequency or the duration of high ozone events. Such differences might be attributed to the large amount of highly reactive VOC mixture in the Tianjin region. It is found that industry related species like light alkenes were of particular importance in both urban and suburban Tianjin, while in Shanghai aromatics dominate. In general, the ozone problem in Shanghai is on an urban scale. Stringent control policies on local emissions would help reduce the occurrence of high ozone concentrations. By contrast, ozone pollution in Tianjin is a regional problem. Combined efforts to reduce ozone precursor emissions on a regional scale must be undertaken to bring the ozone problem under control.

Ozone production in the megacities of Tianjin and Shanghai, China: a comparative study

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