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Comparison of Hourly PM2.5 Observations Between Urban and Suburban Areas in Beijing, China
Yao L.; Lu, N.; Yue, X. F.; Du, J.; Yang, C. D.
Source PublicationInternational Journal of Environmental Research and Public Health
2015
Volume12
Issue10
Pages12264-12276
KeywordPM2.5 concentration diurnal variations spatial variations day-of-week pattern air quality particulate air-pollution particle concentrations chemical-compositions mass concentrations seasonal-variations aerosol matter pm10 variability visibility
AbstractHourly PM2.5 observations collected at 12 stations over a 1-year period are used to identify variations between urban and suburban areas in Beijing. The data demonstrates a unique monthly variation form, as compared with other major cities. Urban areas suffer higher PM2.5 concentration (about 92 g/m(3)) than suburban areas (about 77 g/m(3)), and the average PM2.5 concentration in cold season (about 105 g/m(3)) is higher than warm season (about 78 g/m(3)). Hourly PM2.5 observations exhibit distinct seasonal, diurnal and day-of-week variations. The diurnal variation of PM2.5 is observed with higher concentration at night and lower value at daytime, and the cumulative growth of nighttime (22:00 p.m. in winter) PM2.5 concentration maybe due to the atmospheric stability. Moreover, annual average PM2.5 concentrations are about 18 g/m(3) higher on weekends than weekdays, consistent with driving restrictions on weekdays. Additionally, the nighttime peak in weekdays (21:00 p.m.) is one hour later than weekends (20:00 p.m.) which also shows the evidence of human activity. These observed facts indicate that the variations of PM2.5 concentration between urban and suburban areas in Beijing are influenced by complex meteorological factors and human activities.
Indexed BySCI
Language英语
ISSN1660-4601
DOI10.3390/ijerph121012264
Citation statistics
Document TypeSCI/SSCI论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/43590
Collection历年回溯文献
Recommended Citation
GB/T 7714
Yao L.,Lu, N.,Yue, X. F.,et al. Comparison of Hourly PM2.5 Observations Between Urban and Suburban Areas in Beijing, China. 2015.
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