ArticleJournal of health & pollution2020
Impact of Shutdown due to COVID-19 Pandemic on Aerosol Characteristics in Kanpur, India.
Article in Journal of health & pollution, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Comprehensive analysis of ambient air quality during second lockdown in national capital territory of Delhi.Journal of hazardous materials advances · 2022Article
- Spatio-temporal variation in fine particulate matter and effect on air quality during the COVID-19 in New Delhi, India.Urban climate · 2021Article
- The effect of the COVID-19 lockdown on children with asthma-related symptoms: A tertiary care center experience.Pediatric pulmonology · 2021Article
- Air Quality Before and After COVID-19 Lockdown Phases Around New Delhi, India.Journal of health & pollution · 2021Article
- Comment on "Impact of Shutdown due to COVID-19 Pandemic on Aerosol Characteristics in Kanpur, India".Journal of health & pollution · 2021Article
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5 authors.
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Abstract
backgroundSince March 2020, the number of confirmed COVID-19 positive cases have steadily risen in India. Various preventive measures have been taken to contain the spread of COVID-19. With restrictions on human activities, anthropogenic emissions driving air pollution levels have seen a reduction since March 23, 2020, when the government imposed the first nationwide shutdown. The landlocked Indo-Gangetic Plain (IGP) has many densely-populated cities, witnessing high levels of particulate matter due to both nature-driven and anthropogenic elements. Kanpur is an urban metropolis in the IGP with high aerosol loading, and this paper explores the impact of restricted anthropogenic activities on aerosol characteristics in Kanpur.
objectivesThis study aims to investigate the change in aerosol optical depth level and its related parameters during the shutdown phases in Kanpur city compared to the same time periods in 2017-2019.
methodsAerosol optical properties such as aerosol optical depth (AOD) at 500 nm, Angstrom exponent (AE), fine mode fraction (FMF) of AOD at 500 nm and single scattering albedo (SSA) at 440 nm were obtained from the Aerosol Robotic Network (AERONET) station operating in Kanpur from the 1st March to the 30th April for 2017-2020.
resultsA significant decrease in aerosol loading was observed during the shutdown period compared to the pre-and partial shutdown periods in 2020 as well as during the same time periods of 2017-2019. Mean AOD, FMF and SSA were 0.37, 0.43 and 0.89, respectively, during the shutdown period in 2020. A 20-35% reduction in mean AOD levels was observed during the shutdown period in 2020 as compared to the same period in 2017-2019.
conclusionsThe shutdown led to an improvement in air quality due to decreases in anthropogenic emissions. As fine particles, typically from urban and industrial emissions, dominate episodic air pollution events, this study can be further utilized by the scientific community and regulators to strengthen the emergency response action plan to check high pollution episodes in Kanpur city until cleaner technologies are in place. COMPETING INTERESTS: The authors declare no completing financial interests.
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