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Variations of O3 and Co in Summertime at a Rural Site Near Beijing : Volume 8, Issue 3 (03/06/2008)

By Wang, Y.

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Book Id: WPLBN0003998103
Format Type: PDF Article :
File Size: Pages 18
Reproduction Date: 2015

Title: Variations of O3 and Co in Summertime at a Rural Site Near Beijing : Volume 8, Issue 3 (03/06/2008)  
Author: Wang, Y.
Volume: Vol. 8, Issue 3
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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Nielsen, C. P., Hao, J., Mcelroy, M. B., Chen, Y., Ma, H., Wang, Y., & Munger, J. W. (2008). Variations of O3 and Co in Summertime at a Rural Site Near Beijing : Volume 8, Issue 3 (03/06/2008). Retrieved from

Description: Department of Earth and Planetary Sciences and School of Engineering and Applied Sciences. Harvard University, Cambridge, Massachusetts, USA. Large intra-season differences in concentrations of CO and O3 ([CO], [O3]) were detected at Miyun, a rural site north of Beijing, in summer 2006. Despite an increase in mean daytime [CO] from 500 ppbv in June to 700 ppbv in July, mean daytime [O3] dropped from 67 ppbv in June to 50 ppbv in July and August. The observed changes in CO and O3 are attributed to the influence of the summer monsoonal circulation that develops over the North China Plain in July. Photochemical production of O3 is reduced as a consequence of increased cloudiness during July and August, as indicated by the strong negative correlation observed between [O3] and satellite observations of cloud optical depth, with cloudiness having little effect on CO. The analysis suggests a strategy for emission controls that could be implemented in an economically efficient manner to minimize the frequency of high levels of O3 during summer in Beijing.

Variations of O3 and CO in summertime at a rural site near Beijing

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