• Journal of Geo-information Science
  • Vol. 22, Issue 10, 1983 (2020)
Jiadan DONG1, Xiaoling CHEN1, Xiaobin CAI2, Qiangqiang XU1, Yuting GUAN1, Tinghui LI1, Shiyan LIU2, and Fang CHEN1、*
Author Affiliations
  • 1State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China
  • 2Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077, China
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    DOI: 10.12082/dqxxkx.2020.200212 Cite this Article
    Jiadan DONG, Xiaoling CHEN, Xiaobin CAI, Qiangqiang XU, Yuting GUAN, Tinghui LI, Shiyan LIU, Fang CHEN. Analysis of the Temporal and Spatial Variation of Atmospheric Quality from 2015 to 2019 based on China Atmospheric Environment Monitoring Station[J]. Journal of Geo-information Science, 2020, 22(10): 1983 Copy Citation Text show less

    Abstract

    After 2013, several serious haze pollution events in China have attracted wide attention from the public. Therefore, the Chinese government has developed a series of policies, measures, and laws for air pollution prevention and control. We select the air quality index and six key air pollutant observations in the national air environmental monitoring station network of China to analyze the changes trend and spatial pattern of the country-scaled atmospheric quality from 2015 to 2019. The annual and seasonal average concentrations of these parameters were used to investigate their relationships by using the ratios and correlation coefficients among them. The results showed that the concentration of PM2.5, PM10, SO2, CO, NO2, and AQI all decreased significantly. The annual average concentrations of them in 2019 decreased by 4.5%,3.84%,7.86%,3.74%, 0.95%, and 19.31%, respectively, compared with that in 2015. Only O3 significantly increased by 0.79% in the same period. The average annual concentrations of PM10, PM2.5, O3, NO2, SO2,CO, and AQI in northern China all are higher than those in southern China by 25.2%, 18.73%, 4.95%, 17.6%, 32.74%, 16.17%, and 28.3%, respectively. Besides, AQI and all six pollutants showed the seasonality. The seasonal variation pattern of O3 exists with a higher concentration in summer and a lower concentration in winter, while the other five pollutants and AQI present the inverse seasonality. In general, PM2.5 and O3 are the most severe air pollutants in China during these five years. Furthermore, the relationships among different pollutants were found in the study period. The PM2.5 concentration is significantly positively correlated with NO2, SO2 and CO (r>0.85, p<0.01), and O3 is negatively correlated with its precursor NO2 and CO (r>0.8, p<0.01).
    Jiadan DONG, Xiaoling CHEN, Xiaobin CAI, Qiangqiang XU, Yuting GUAN, Tinghui LI, Shiyan LIU, Fang CHEN. Analysis of the Temporal and Spatial Variation of Atmospheric Quality from 2015 to 2019 based on China Atmospheric Environment Monitoring Station[J]. Journal of Geo-information Science, 2020, 22(10): 1983
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