气候变化领域集成服务门户(CCPortal): Quantifying the impact of synoptic circulation patterns on ozone variability in northern China from April to October 2013-2017

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DOI	10.5194/acp-19-14477-2019
	Quantifying the impact of synoptic circulation patterns on ozone variability in northern China from April to October 2013-2017
	Liu J.; Wang L.; Li M.; Liao Z.; Sun Y.; Song T.; Gao W.; Wang Y.; Li Y.; Ji D.; Hu B.; Wang Y.; Kulmala M.
发表日期	2019
ISSN	16807316
起始页码	14477
结束页码	14492
卷号	19 期号:23
英文摘要	The characteristics of ozone variations and the impacts of synoptic and local meteorological factors in northern China were quantitatively analyzed during the warm season from 2013 to 2017 based on multi-city in situ ozone and meteorological data as well as meteorological reanalysis. The domain-averaged maximum daily 8 h running average O3 (MDA8 O3) concentration was 122±11 μg m-3, with an increase rate of 7.88 μg m-3 yr-1, and the three most polluted months were closely related to the variations in the synoptic circulation patterns, which occurred in June (149 μg m-3), May (138 μg m-3) and July (132 μg m-3). A total of 26 weather types (merged into five weather categories) were objectively identified using the Lamb-Jenkinson method. The highly polluted weather categories included the S-W-N directions (geostrophic wind direction diverts from south to north), low-pressure-related weather types (LP) and cyclone type, which the study area controlled by a low-pressure center (C), and the corresponding domain-averaged MDA8 O3 concentrations were 122, 126 and 128 μg m-3, respectively. Based on the frequency and intensity changes of the synoptic circulation patterns, 39.2 % of the interannual increase in the domain-averaged O3 from 2013 to 2017 was attributed to synoptic changes, and the intensity of the synoptic circulation patterns was the dominant factor. Using synoptic classification and local meteorological factors, the segmented synoptic-regression approach was established to evaluate and forecast daily ozone variability on an urban scale. The results showed that this method is practical in most cities, and the dominant factors are the maximum temperature, southerly winds, relative humidity on the previous day and on the same day, and total cloud cover. Overall, 41 %-63 % of the day-to-day variability in the MDA8 O3 concentrations was due to local meteorological variations in most cities over northern China, except for two cities: QHD (Qinhuangdao) at 34 % and ZZ (Zhengzhou) at 20 %. Our quantitative exploration of the influence of both synoptic and local meteorological factors on interannual and day-to-day ozone variability will provide a scientific basis for evaluating emission reduction measures that have been implemented by the national and local governments to mitigate air pollution in northern China. © Author(s) 2019. This work is distributed under the Creative Commons Attribution 4.0 License.
语种	英语
scopus关键词	atmospheric circulation; atmospheric pollution; emission control; ozone; synoptic meteorology; China; Hebei; Henan; Qinhuangdao; Zhengzhou
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/144005
作者单位	Department of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing, 210044, China; State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry (LAPC), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; Centre for Excellence in Atmospheric Urban Environment, Institute of Urban Environment, Chinese Academy of Science, Xiamen, Fujian, 361021, China; Institute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki, Helsinki, Finland; University of Chinese Academy of Sciences, Beijing, 100049, China; School of Atmospheric Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China; Fangshan Meteorological Bureau, Beijing, 102488, China
推荐引用方式 GB/T 7714	Liu J.,Wang L.,Li M.,et al. Quantifying the impact of synoptic circulation patterns on ozone variability in northern China from April to October 2013-2017[J],2019,19(23).
APA	Liu J..,Wang L..,Li M..,Liao Z..,Sun Y..,...&Kulmala M..(2019).Quantifying the impact of synoptic circulation patterns on ozone variability in northern China from April to October 2013-2017.Atmospheric Chemistry and Physics,19(23).
MLA	Liu J.,et al."Quantifying the impact of synoptic circulation patterns on ozone variability in northern China from April to October 2013-2017".Atmospheric Chemistry and Physics 19.23(2019).