Variations of O<sub>3</sub> and CO in summertime at a rural site near Beijing Journal Article uri icon



  • Abstract. Large intra-season differences in mixing ratios of CO and O3 were detected at Miyun, a rural site north of Beijing, in summer 2006. Despite an increase in mean daytime mixing ratio of 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.;

publication date

  • November 5, 2008

has restriction

  • gold

Date in CU Experts

  • December 25, 2021 12:19 PM

Full Author List

  • Wang Y; McElroy MB; Munger JW; Hao J; Ma H; Nielsen CP; Chen Y

author count

  • 7

Other Profiles

Electronic International Standard Serial Number (EISSN)

  • 1680-7324

Additional Document Info

start page

  • 6355

end page

  • 6363


  • 8


  • 21