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Spatiotemporal Characteristics of Air Quality across Weifang from 2014–2018

Author

Listed:
  • Chengming Li

    (Chinese Academy of Surveying and Mapping, Beijing 100830, China)

  • Zhaoxin Dai

    (Chinese Academy of Surveying and Mapping, Beijing 100830, China)

  • Lina Yang

    (Chinese Academy of Surveying and Mapping, Beijing 100830, China)

  • Zhaoting Ma

    (Chinese Academy of Surveying and Mapping, Beijing 100830, China)

Abstract

Air pollution has become a severe threat and challenge in China. Focusing on air quality in a heavily polluted city (Weifang Cty), this study aims to investigate spatial and temporal distribution characteristics of air pollution and identify the influence of weather factors on primary pollutants in Weifang over a long period from 2014–2018. The results indicate the annual Air quality Index (AQI) in Weifang has decreased since 2014 but is still far from the standard for excellent air quality. The primary pollutants are O 3 (Ozone), PM 10 (Particles with aerodynamic diameter ≤10 µm), and PM 2.5 (Particles with aerodynamic diameter ≤10 µm); the annual concentrations of PM 10 and PM 2.5 show a significant reduction but that of O 3 is basically unchanged. Seasonally, PM 10 and PM 2.5 show a U-shaped pattern, while O 3 exhibits inverted U-shaped variations, and different pollutants also present different characteristics daily. Spatially, O 3 exhibits a high level in the central region and a low level in the rural areas, while PM 10 and PM 2.5 are high in the northwest and low in the southeast. Additionally, the concentration of pollutants is greatly affected by meteorological factors, with PM 2.5 being negatively correlated with temperature and wind speed, while O 3 is positively correlated with the temperature. This research investigated the spatiotemporal characteristics of the air pollution and provided important policy advice based on the findings, which can be used to mitigate air pollution.

Suggested Citation

  • Chengming Li & Zhaoxin Dai & Lina Yang & Zhaoting Ma, 2019. "Spatiotemporal Characteristics of Air Quality across Weifang from 2014–2018," IJERPH, MDPI, vol. 16(17), pages 1-15, August.
    • Handle: RePEc:gam:jijerp:v:16:y:2019:i:17:p:3122-:d:261496
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    References listed on IDEAS

    as
    1. Yazhu Wang & Xuejun Duan & Lei Wang, 2019. "Spatial-Temporal Evolution of PM 2.5 Concentration and its Socioeconomic Influence Factors in Chinese Cities in 2014–2017," IJERPH, MDPI, vol. 16(6), pages 1-18, March.
    2. Tao Chen & Jun He & Xiaowei Lu & Jiangfeng She & Zhongqing Guan, 2016. "Spatial and Temporal Variations of PM 2.5 and Its Relation to Meteorological Factors in the Urban Area of Nanjing, China," IJERPH, MDPI, vol. 13(9), pages 1-16, September.
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    Cited by:

    1. Chengming Li & Kuo Zhang & Zhaoxin Dai & Zhaoting Ma & Xiaoli Liu, 2020. "Investigation of the Impact of Land-Use Distribution on PM 2.5 in Weifang: Seasonal Variations," IJERPH, MDPI, vol. 17(14), pages 1-20, July.
    2. Mao Mao & Haofei Sun & Xiaolin Zhang, 2020. "Air Pollution Characteristics and Health Risks in the Yangtze River Economic Belt, China during Winter," IJERPH, MDPI, vol. 17(24), pages 1-17, December.
    3. Lining Zhu & Yu Zhang & Zheng Wu & Chengcheng Zhang, 2021. "Spatio-Temporal Characteristics of SO 2 across Weifang from 2008 to 2020," IJERPH, MDPI, vol. 18(22), pages 1-17, November.

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