@article {47466,
	title = {Year-round measurements of O3 and CO at a rural site near Beijing: Variations in their correlations},
	journal = {Tellus B: Chemical and Physical Meteorology},
	volume = {62},
	year = {2010},
	note = {<a data-url="https://dash.harvard.edu/handle/1/25757738" href="https://dash.harvard.edu/handle/1/25757738" target="_blank" title="">Final Manuscript in DASH</a>},
	pages = {228-241},
	abstract = {We examine seasonal variations of carbon monoxide (CO), ozone (O<sub>3</sub>), and their relationships observed over the course of 3 yr (2005{\textendash}2007) at Miyun, a rural site 100 km north of Beijing. Monthly mean afternoon mixing ratios of CO have broad maxima in winter and a secondary peak in June. Monthly mean afternoon O<sub>3</sub> shows a clear seasonal pattern with a major peak in June (85 ppb), a secondary peak in September (65 ppb) and minimum in winter (50{\textendash}55 ppb). The seasonal cycles of O<sub>3</sub> and CO are associated with seasonal changes in dominant synoptic pattern. Substantial interannual variability is found for CO which is attributed to the interannual variability of meteorology and emissions from biomass burning. The seasonality and magnitude of background CO and O<sub>3</sub> derived at Miyun are consistent with observations at upwind remote continental sites. The O<sub>3</sub>{\textendash}CO correlation slope is about 0.07 ppb ppb<sup>-1</sup> on average in summer, significantly lower than the typical slope of 0.3 ppb ppb<sup>-1</sup> reported for developed countries. The O<sub>3</sub>{\textendash}CO correlation slope shows large gradients for different types of air masses (0.133 {\textpm} 0.017 ppb ppb<sup>-1</sup> in aged urban pollution plumes and 0.047 {\textpm} 0.008 ppb ppb<sup>-1</sup> in biomass burning plumes), suggesting that the conventional method of direct scaling the mean O<sub>3</sub>{\textendash}CO slope by CO emissions to deduce O<sub>3</sub> production rate is subject to large uncertainties if applied for China.},
	url = {http://onlinelibrary.wiley.com/doi/10.1111/j.1600-0889.2010.00464.x/abstract},
	author = {Wang, Yuxuan and McElroy, Michael B. and J. William Munger and Hao, Jiming and Ma, Hong and Nielsen, Chris P}
}
