Abstract
AbstractThis study investigated the environmental spatial heterogeneity of novel coronavirus (COVID-19) and spatial and temporal changes among the top-20 metropolitan cities of the Asia-Pacific. Remote sensing-based assessment is performed to analyze before and during the lockdown amid COVID-19 lockdown in the cities. Air pollution and mobility data of each city (Bangkok, Beijing, Busan, Dhaka, Delhi, Ho Chi Minh, Hong Kong, Karachi, Mumbai, Seoul, Shanghai, Singapore, Tokyo, Wuhan, and few others) have been collected and analyzed for 2019 and 2020. Results indicated that almost every city was impacted positively regarding environmental emissions and visible reduction were found in Aerosol Optical Depth (AOD), sulfur dioxide (SO2), carbon monoxide (CO), and nitrogen dioxide (NO2) concentrations before and during lockdown periods of 2020 as compared to those of 2019. The highest NO2 emission reduction (~ 50%) was recorded in Wuhan city during the lockdown of 2020. AOD was highest in Beijing and lowest in Colombo (< 10%). Overall, 90% movement was reduced till mid-April, 2020. A 98% reduction in mobility was recorded in Delhi, Seoul, and Wuhan. This analysis suggests that smart mobility and partial shutdown policies could be developed to reduce environmental pollutions in the region. Wuhan city is one of the benchmarks and can be replicated for the rest of the Asian cities wherever applicable.
Publisher
Springer Science and Business Media LLC
Reference35 articles.
1. Khan, S. et al. Knowledge, awareness and practices of Pakistani professionals amid-COVID-19 outbreak. Sci. Rep. 11, 17543 (2021).
2. Chakraborty, I. & Maity, P. COVID-19 outbreak: Migration, effects on society, global environment and prevention. Sci. Total Environ. 728, 138882 (2020).
3. Solimini, A. et al. A global association between Covid-19 cases and airborne particulate matter at regional level. Sci. Rep. 11, 6256 (2021).
4. WHO. Coronavirus disease COVID-19 pandemic. Available on this link: https://www.who.int/emergencies/diseases/novel-coronavirus-2019. Assessed 25 May 2020.
5. Xie, J. & Zhu, Y. Association between ambient temperature and COVID-19 infection in 122 cities from China. Sci. Total Environ. 724, 138201 (2020).
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