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首页> 外文期刊>Atmospheric Chemistry and Physics Discussions >Characteristics of 1 year of observational data of VOCs, NOsubix/i/sub and Osub3/sub at a suburban site in Guangzhou, China
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Characteristics of 1 year of observational data of VOCs, NOsubix/i/sub and Osub3/sub at a suburban site in Guangzhou, China

机译：广州市郊区现场VOCs，NO x 和O 3 的一年观测数据的特征

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pstrongAbstract./strong Guangzhou, one of China's megacities, is beset with frequent occurrence of high-concentration ozone events. In this study, online instruments were used to simultaneously monitor ozone, nitrogen oxides (NOsubix/i/sub) and volatile organic compounds (VOCs) at GPACS (the Guangzhou Panyu Atmospheric Composition Station) of the China Meteorological Administration, from June 2011 to May 2012, in order to determine their characteristics, the effect of VOCs on ozone photochemical production and the relationship between VOC / NOsubix/i/sub ratio and ozone formation. The results showed that during the observation period, the seasonal variation of ozone concentration was lower in spring and winter compared to summer and autumn, which is opposite that for VOCs and NOsubix/i/sub. In terms of VOCs, aromatics had the largest ozone formation potential, among which toluene, xylenes, ethylbenzene, 1,2,4-trimethylbenzene and 1,3,5-trimethylbenzene were the most important species, with a total contribution of about 44%. As the VOC / NOsubix/i/sub ratios were very high during high-concentration ozone events that occur all year round, we speculate ozone production was likely to be NOsubix/i/sub-limited regime (1200a??1600 LT) in Guangzhou. Further investigation based on numerical models is needed in the future to obtain more detailed and robust conclusions./p.
机译：> >摘要。广州是中国特大城市之一，周围经常发生高浓度臭氧事件。在这项研究中，在线仪器被用于同时监测GPACS（广州番yu大气成分站）中的臭氧，氮氧化物（NO x ）和挥发性有机化合物（VOC）。为了确定其特征，挥发性有机化合物对臭氧光化学生产的影响以及挥发性有机化合物/ NO x 的关系，于2011年6月至2012年5月比率和臭氧形成。结果表明，在观测期内，春季和冬季臭氧浓度的季节变化低于夏季和秋季，这与VOC和NO x 相反。就挥发性有机化合物而言，芳族化合物具有最大的臭氧形成潜力，其中甲苯，二甲苯，乙苯，1,2,4-三甲基苯和1,3,5-三甲基苯是最重要的物种，约占总排放量的44％ 。由于常年发生的高浓度臭氧事件中VOC / NO x 的比率非常高，我们推测臭氧产生量很可能是NO x 限制制度（1200a ?? 1600 LT）。为了获得更详细和可靠的结论，未来需要基于数值模型进行进一步的研究。

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