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AuthorChen, Yuanyuan
AuthorBai, Yang
AuthorLiu, Hongtao
AuthorAlatalo, Juha M.
AuthorJiang, Bo
Available date2020-08-19T08:23:05Z
Publication Date2020-12-01
Publication NameScientific Reports
Identifierhttp://dx.doi.org/10.1038/s41598-020-68201-0
CitationChen, Y., Bai, Y., Liu, H. et al. Temporal variations in ambient air quality indicators in Shanghai municipality, China. Sci Rep 10, 11350 (2020). https://doi.org/10.1038/s41598-020-68201-0
URIhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85087803739&origin=inward
URIhttp://hdl.handle.net/10576/15692
Abstract© 2020, The Author(s). Official data on daily PM2.5, PM10, SO2, NO2, CO, and maximum 8-h average O3 (O3_8h) concentrations from January 2015 to December 2018 were evaluated and air pollution status and dynamics in Shanghai municipality were examined. Factors affecting air quality, including meteorological factors and socio-economic indicators, were analyzed. The main findings were that: (1) Overall air quality status in Shanghai municipality has improved and number of days meeting ‘Chinese ambient air quality standards’ (CAAQS) Grade II has increased. (2) The most frequent major pollutant in Shanghai municipality is O3 (which exceeded the standard on 110 days in 2015, 84 days in 2016, 126 days in 2017, 113 days in 2018), followed by PM2.5 (120days in 2015, 104 days in 2016, 67 days in 2017, 61 days in 2018) and NO2 (50 days in 2015, 67 days in 2016, 79 days in 2017, 63 days in 2018). (3) PM2.5 pollution in winter and O3 pollution in summer are the main air quality challenges in Shanghai municipality. (4) Statistical analysis suggested that PM2.5, PM10, SO2 and NO2 concentrations were significantly negatively associated with precipitation (Prec) and atmosphere temperature (T) (p < 0.05), while the O3 concentration was significantly positively associated with Prec and T (p < 0.05). Lower accumulation of PM, SO2, NO2, and CO and more serious O3 pollution were revealed during months with higher temperature and more precipitation in Shanghai. The correlation between the socio-economic factors and the air pollutants suggest that further rigorous measures are needed to control PM2.5 and that further studies are needed to identify O3 formation mechanisms and control strategies. The results provide scientific insights into meteorological factors and socio-economic indicators influencing air pollution in Shanghai.
SponsorThis study was supported by the Key Research Program of Frontier Sciences (Grant No. ZDBS-LY-7011), National Key Research and Development Program of China (2017YFF0207303; 2016YFC0503004). The online sharing of air quality data by the Shanghai Environmental Monitoring Center is gratefully acknowledged.
Languageen
PublisherNature Research
SubjectSource Apportionment
Haze
Elemental Carbon
TitleTemporal variations in ambient air quality indicators in Shanghai municipality, China
TypeArticle
Issue Number1
Volume Number10
ESSN2045-2322
dc.accessType Open Access


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