Spatiotemporal Relationships between Air Quality and Multiple Meteorological Parameters in 221 Chinese Cities
Joint Authors
Sun, Wei
Ji, Mengyi
Jiang, Yuying
Han, Xiping
Liu, Luo
Xu, Xinliang
Qiao, Zhi
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-25, 25 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-06-14
Country of Publication
Egypt
No. of Pages
25
Main Subjects
Abstract EN
Air quality in China is characterized by significant spatial and temporal differences, which are directly related to local meteorological conditions.
This study used air quality monitoring data, namely, the air pollution index (API) and air quality index (AQI) between 2005 and 2018, together with meteorological data and identified key meteorological factors that affected the spatial and temporal variation of air quality using a random forest algorithm.
The spatial and temporal differences in the threshold values of different meteorological factors affecting the concentrations of PM2.5, PM10, SO2, CO, NO2, and O3 were identified.
The AQI has the advantages of facilitating higher index values than the API.
The air quality showed an improvement from 2005 to 2018.
Wind direction and precipitation were the most important meteorological factors affecting the air quality in northern and southern China, respectively, which to some extent reflected the causes and degradation mechanisms of air pollution in the two regions.
There were significant spatial and temporal differences in the effects of meteorological factors on the concentrations of different pollutants.
The influence of atmospheric pressure on pollutant concentration differed between the east and west.
Precipitation and relative humidity in most cities had significant impacts on PM2.5 and PM10.
The influence of relative humidity was most significant for SO2 and it also had a great influence on O3, while wind speed had a great influence on NO2.
The results of the study confirm the meteorological sensitivity of air quality and provide support for the implementation of regional air pollution prevention and control initiatives.
American Psychological Association (APA)
Ji, Mengyi& Jiang, Yuying& Han, Xiping& Liu, Luo& Xu, Xinliang& Qiao, Zhi…[et al.]. 2020. Spatiotemporal Relationships between Air Quality and Multiple Meteorological Parameters in 221 Chinese Cities. Complexity،Vol. 2020, no. 2020, pp.1-25.
https://search.emarefa.net/detail/BIM-1143372
Modern Language Association (MLA)
Ji, Mengyi…[et al.]. Spatiotemporal Relationships between Air Quality and Multiple Meteorological Parameters in 221 Chinese Cities. Complexity No. 2020 (2020), pp.1-25.
https://search.emarefa.net/detail/BIM-1143372
American Medical Association (AMA)
Ji, Mengyi& Jiang, Yuying& Han, Xiping& Liu, Luo& Xu, Xinliang& Qiao, Zhi…[et al.]. Spatiotemporal Relationships between Air Quality and Multiple Meteorological Parameters in 221 Chinese Cities. Complexity. 2020. Vol. 2020, no. 2020, pp.1-25.
https://search.emarefa.net/detail/BIM-1143372
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1143372