| Issue |
E3S Web Conf.
Volume 299, 2021
4th Annual International Conference on Energy Development and Environmental Protection (EDEP 2021)
|
|
|---|---|---|
| Article Number | 02011 | |
| Number of page(s) | 7 | |
| Section | Environmental Science and Engineering | |
| DOI | https://doi.org/10.1051/e3sconf/202129902011 | |
| Published online | 05 August 2021 | |
Impact of COVID-19 Lockdown and Atmospheric Circulation on the Air Quality in Wuhan During Early 2020
1 School of Atmospheric Sciences, Nanjing University of Information Science & Technology, Nanjing 210044, China
2 WeatherOnline Institute of Meteorological Applications, Wuxi 214000, China
* Corresponding author: zhi@nuist.edu.cn
Previous studies indicated that the air quality was improved in Wuhan during COVID-19 lockdown. However, the impact of atmospheric general circulation on the changes of air quality has not been taken into account. The present study aims to discuss the improvement of air quality in Wuhan and its possible reasons during COVID-19 lockdown. The results showed that all air pollutants except O3 decreased in Wuhan during early 2020. The occurrence days of A, C, W and NW types’ circulation pattern during early 2020 are more than those during the same period of 1979-2020. The occurrence days of SW type’s circulation pattern is slightly less than those during early 1979-2020. With more occurrence days of these dominant atmospheric circulation patterns, the number of polluted days could rise in Wuhan during early 2020. Nevertheless, this scenario didn’t occur. The COVID-19 lockdown did improve the air quality in Wuhan during early 2020.
© The Authors, published by EDP Sciences, 2021
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