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Heliyon

Title:		Anomalous behaviour of ozone under COVID-19 and explicit diagnosis of O(3)-NO(x)-VOCs mechanism
Author(s):		Rathod A; Sahu SK; Singh S; Beig G;
Address:		"Indian Institute of Tropical Meteorology, Pune 411008, India. Utkal University, Bhubaneswar, Orissa, India. India Meteorological Department, New Delhi, India"
Journal Title:		Heliyon
Year:		2021
Volume:		20210129
Issue:		2
Page Number:		e06142 -
DOI:		10.1016/j.heliyon.2021.e06142
ISSN/ISBN:		2405-8440 (Print) 2405-8440 (Electronic) 2405-8440 (Linking)
Abstract:		"Air pollution is linked to higher rates of human mortality especially those infected with COVID 19. Ozone is a harmful pollutant and is responsible for many health issues. However, some reports suggest that ozone is a strong disinfectant, and can kill the viruses. We hereby, report on the vulnerability of ozone due to COVID-19 lockdown whose levels flutter from surging to saturation in a highly polluted Indian capital, due to significant decline in anthropogenic emissions of ozone precursors. Average observed levels stabilized at 30 ppb, 12 ppb, 740 ppb, and 900 ppb for ozone (O(3)), nitrogen dioxide (NO(2)), carbon monoxide (CO) and volatile organic compounds (VOCs) respectively during lockdown period from 27(th) March to 10(th) April 2020. The NO(2), CO and VOC declined by 50 %, 37 %, 38 % respectively during the lockdown period of 2020 as compared to similar period in 2019. The anomalous response of ozone during the lockdown is explained by resolving the poorly known complex O(3)-NO(x)-VOCs mechanism with the help of data from air monitoring stations in Delhi, India. The data obtained from this study advances the fundamental understanding of ozone chemistry that may lead to improved ozone parameterization in chemical transport models and better planning of ozone risk management strategies for any global mega cities"
Keywords:		Anthropogenic Covid-19 NOx O3 Ozone Pollutant;
Notes:		"PubMed-not-MEDLINERathod, A Sahu, S K Singh, S Beig, G eng England 2021/02/09 Heliyon. 2021 Feb; 7(2):e06142. doi: 10.1016/j.heliyon.2021.e06142. Epub 2021 Jan 29"