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DOI10.5194/acp-22-8403-2022
Observation-based analysis of ozone production sensitivity for two persistent ozone episodes in Guangdong, China
Song, Kaixiang; Liu, Run; Wang, Yu; Liu, Tao; Wei, Liyan; Wu, Yanxing; Zheng, Junyu; Wang, Boguang; Liu, Shaw Chen
发表日期2022
ISSN1680-7316
EISSN1680-7324
起始页码8403
结束页码8416
卷号22期号:12页码:14
英文摘要An observation-based method (OBM) is developed to investigate the sensitivity of ozone formation to precursors during two persistent elevated ozone episodes observed at 77 stations in Guangdong. Average OH concentrations derived at the 77 stations between 08:00 and 13:00 local time stay within a narrow range of 2.5 x 10(6) to 5.5 x 10(6) cm(-3) with a weak dependence on the NOx. These values are in good agreement with OH values observed at a rural station in the Pearl River Delta (PRD). They also agree well with a box model constrained by the ambient conditions observed during the two episodes. The OBM has been used to evaluate the ozone production efficiency, epsilon(NOx or volatile organic compound, VOC), defined as the number of O-3 molecules produced per molecule of NOx (or VOC) oxidized. Average values of epsilon(NOx) and epsilon(VOC) determined by the OBM are 3.0 and 2.1 ppb ppb(-1), respectively, and both compared well with values in previous studies. Approximately 67% of the station days exhibit ozone formation sensitivity to NOx, and approximately 20% of the station days are in the transitional regime sensitive to both NOx and VOC, and only approximately 13% of the station days are sensitive to VOC. These results are in semi-quantitative agreement with the ozone formation sensitivity calculated by the box model constrained by ambient conditions observed during the two episodes. However, our OBM results differ from those of most previous investigations, which suggested that limiting the emission of VOC rather than NOx would be more effective in reducing ozone reduction in Guangdong.
学科领域Environmental Sciences; Meteorology & Atmospheric Sciences
语种英语
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号WOS:000819420200001
来源期刊ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/273044
作者单位Jinan University
推荐引用方式
GB/T 7714
Song, Kaixiang,Liu, Run,Wang, Yu,et al. Observation-based analysis of ozone production sensitivity for two persistent ozone episodes in Guangdong, China[J],2022,22(12):14.
APA Song, Kaixiang.,Liu, Run.,Wang, Yu.,Liu, Tao.,Wei, Liyan.,...&Liu, Shaw Chen.(2022).Observation-based analysis of ozone production sensitivity for two persistent ozone episodes in Guangdong, China.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(12),14.
MLA Song, Kaixiang,et al."Observation-based analysis of ozone production sensitivity for two persistent ozone episodes in Guangdong, China".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.12(2022):14.
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