1. Effects of COVID-19 lockdown on ambient air pollution in Madhya Pradesh, India.
- Author
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Aher, Satish Bhagwatrao, Nandi, Subroto, Ramesh, Gondru, Raj, Dharma, Patel, Lokesh, and Tiwari, Rajnarayan
- Subjects
AIR quality monitoring stations ,AIR pollutants ,AIR pollution ,STAY-at-home orders ,COVID-19 - Abstract
The paper aims to quantify the changes in the pollutants level in the ambient air of Madhya Pradesh during COVID-19 induced 21 days lockdown. The data of 16 continuous ambient air quality monitoring stations (CAAQMS) for six pollutants, namely PM
2.5 , PM10 , SO2 , NOx , CO, and Ozone for pre-lockdown (1–21 March 2020) and lockdown (25 March-14 April 2020) period was compiled and appropriate statistical analysis was done. The result showed a reduction of 13%, 20%, 37%, 39% and 25% in the ambient air level of PM2.5 , PM10 , SO2 , NOx and CO, respectively, during the lockdown. No such declining trend was observed in the ambient air ozone level. Ambient air ozone level changed between −22 and +30% compared to pre-lockdown concentrations. The mean ambient air ozone concentration was reduced at the residential/commercial stations (−5%), but was increased at the industrial stations (+19%) concentration. [ABSTRACT FROM AUTHOR]- Published
- 2022
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