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Assessment of Air Quality Status in Wuhan, China

College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
Author to whom correspondence should be addressed.
Academic Editor: Robert W. Talbot
Atmosphere 2016, 7(4), 56;
Received: 18 February 2016 / Revised: 21 March 2016 / Accepted: 28 March 2016 / Published: 13 April 2016
In this study, air quality characteristics in Wuhan were assessed through descriptive statistics and Hierarchical Cluster Analysis (HCA). Results show that air quality has slightly improved over the recent years. While the NO2 concentration is still increasing, the PM10 concentration shows a clearly downward trend with some small fluctuations. In addition, the SO2 concentration has steadily decreased since 2008. Nevertheless, the current level of air pollutants is still quite high, with the PM10 and NO2 levels exceeding the air quality standard. Seasonal variation exists consistently for all the pollutants, with the highest concentration in winter and the lowest in summer. Cluster analysis evidenced that nine urban monitoring sites could be classified into three clusters. Cluster I consists of only the LY site, which is located in the famous East Lake scenic area with the best air quality. Cluster II corresponds to three monitoring sites with heavily trafficked roads nearby, where relatively severe NO2 pollution occurred. Cluster III is comprised of the remaining five sites, characterized by PM10 and SO2 pollution. View Full-Text
Keywords: air quality; cluster analysis; spatiotemporal variation air quality; cluster analysis; spatiotemporal variation
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MDPI and ACS Style

Song, J.; Guang, W.; Li, L.; Xiang, R. Assessment of Air Quality Status in Wuhan, China. Atmosphere 2016, 7, 56.

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