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Does air pollution upsurge in megacities after Covid-19 lockdown? A spatial approach.
Environ Res. 2021 06; 197:111052.ER

Abstract

The current coronavirus (COVID-19) pandemic has a high spreading and fatality rate. To control the rapid spreading of the COVID-19 virus, the government of India imposed lockdown policies, which creates a unique opportunity to analyze the impact of lockdown on air quality in the two most populous cities of India, i.e., Delhi and Mumbai. To do this, the study employed a spatial approach to examine the concentration of seven criteria pollutants, i.e., PM2.5, PM10, NH3, CO, NO2, O3, and SO2, before, during, and after a lockdown in Delhi and Mumbai. Overall, around 42%, 50%, 21%, 37%, 53%, and 41% declines in PM2.5, PM10, NH3, CO, NO2, and SO2 were observed during the lockdown period as compared to previous years. On the other hand, a 2% increase in O3 concentration was observed. However, the study analyzed the National Air Quality Index (NAQI) for Delhi and Mumbai and found that lockdown does not improve the air quality in the long term period. Our key findings provide essential information to the cities' administration to develop rules and regulations to enhance air quality.

Authors+Show Affiliations

School of Economics and Management, Southeast University, Nanjing, China. Electronic address: 233189917@seu.edu.cn.School of Economics and Management, Southeast University, Nanjing, China. Electronic address: Jiulonghu99@126.com.School of International Trade and Economics, University of International Business and Economics, Beijing, China. Electronic address: mahmood_449@yahoo.com.School of International Trade and Economics, University of International Business and Economics, Beijing, China. Electronic address: abdulmajeed192@hotmail.com.The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China. Electronic address: tariq.farheen@hotmail.com.School of Economics, Qingdao University, Shandong, China. Electronic address: maanwahab94@gmail.com.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

33753079

Citation

Shehzad, Khurram, et al. "Does Air Pollution Upsurge in Megacities After Covid-19 Lockdown? a Spatial Approach." Environmental Research, vol. 197, 2021, p. 111052.
Shehzad K, Xiaoxing L, Ahmad M, et al. Does air pollution upsurge in megacities after Covid-19 lockdown? A spatial approach. Environ Res. 2021;197:111052.
Shehzad, K., Xiaoxing, L., Ahmad, M., Majeed, A., Tariq, F., & Wahab, S. (2021). Does air pollution upsurge in megacities after Covid-19 lockdown? A spatial approach. Environmental Research, 197, 111052. https://doi.org/10.1016/j.envres.2021.111052
Shehzad K, et al. Does Air Pollution Upsurge in Megacities After Covid-19 Lockdown? a Spatial Approach. Environ Res. 2021;197:111052. PubMed PMID: 33753079.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Does air pollution upsurge in megacities after Covid-19 lockdown? A spatial approach. AU - Shehzad,Khurram, AU - Xiaoxing,Liu, AU - Ahmad,Mahmood, AU - Majeed,Abdul, AU - Tariq,Farheen, AU - Wahab,Salman, Y1 - 2021/03/19/ PY - 2020/09/18/received PY - 2021/01/18/revised PY - 2021/03/13/accepted PY - 2021/3/24/pubmed PY - 2021/6/11/medline PY - 2021/3/23/entrez KW - Air quality KW - COVID-19 KW - India KW - Lockdown KW - Spatial analysis SP - 111052 EP - 111052 JF - Environmental research JO - Environ Res VL - 197 N2 - The current coronavirus (COVID-19) pandemic has a high spreading and fatality rate. To control the rapid spreading of the COVID-19 virus, the government of India imposed lockdown policies, which creates a unique opportunity to analyze the impact of lockdown on air quality in the two most populous cities of India, i.e., Delhi and Mumbai. To do this, the study employed a spatial approach to examine the concentration of seven criteria pollutants, i.e., PM2.5, PM10, NH3, CO, NO2, O3, and SO2, before, during, and after a lockdown in Delhi and Mumbai. Overall, around 42%, 50%, 21%, 37%, 53%, and 41% declines in PM2.5, PM10, NH3, CO, NO2, and SO2 were observed during the lockdown period as compared to previous years. On the other hand, a 2% increase in O3 concentration was observed. However, the study analyzed the National Air Quality Index (NAQI) for Delhi and Mumbai and found that lockdown does not improve the air quality in the long term period. Our key findings provide essential information to the cities' administration to develop rules and regulations to enhance air quality. SN - 1096-0953 UR - https://www.unboundmedicine.com/medline/citation/33753079/Does_air_pollution_upsurge_in_megacities_after_Covid_19_lockdown_A_spatial_approach_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0013-9351(21)00346-7 DB - PRIME DP - Unbound Medicine ER -