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| Titel |
Seasonal variation of trace gas compounds and PM2.5 observed at an urban supersite in Beijing |
| VerfasserIn |
Yusheng Wu, Min Hu, Limin Zeng, Huabin Dong, Xin Li, Keding Lu, Sihua Lu, Yudong Yang, Yuanhang Zhang |
| Konferenz |
EGU General Assembly 2016
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 18 (2016) |
| Datensatznummer |
250131953
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| Publikation (Nr.) |
 EGU/EGU2016-12409.pdf |
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| Zusammenfassung |
| The air pollution in Beijing has been a growing concern in the last ten years. We have
performed measurements on trace gas compounds (CO, NOx, NOy, O3, SO2), PM2.5, and
meteorological parameters at Beijing urban Atmospheric Environmental Observation Station
in the campus of Peking University for more than ten years. The measurement results provide
us an opportunity to track the air quality change in downtown Beijing. Here, we
present observations during year between 2011 and 2015. The annual averaged
concentration of CO, NOx, NOy, O3, SO2, and PM2.5 is 1.2 ± 0.1 ppm, 49.9 ± 5.9 ppb,
54.6 ± 4.7 ppb, 26.1 ± 3.8 ppb, 10.6 ± 2.9 ppb, and 53.4 ± 9.8 μg ⋅m−3, respectively. A clear
seasonal variation is identified for all the measured trace gas compounds and PM2.5,
CO, NOx, NOy, SO2, and PM2.5 show their maximum in winter and minimum
in summer. Whilst O3 shows an inverse pattern. This result indicates that the air
pollution in Beijing is characterized by haze in winter but by photochemical smog in
summer. The effects of meteorological conditions and emissions on the occurrence of
pollution episode are discussed in details based on the long-term observation data set. |
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