International Journal of Ecology and Environmental Sciences

International Journal of Ecology and Environmental Sciences


International Journal of Ecology and Environmental Sciences
International Journal of Ecology and Environmental Sciences
2020, Vol. 2, Issue 4
Covid-19 has drastically reduced air pollution in 4 metro cities of India: A comparative scholastic study before and after lockdown period

Ratul Datta, Tapati Basu D Litt

It is nothing to be mentioned that due to rapid urbanization in India, particularly the major metro cities induced huge environmental contamination in the environment, especially in the air with several particulate matters has posed a severe challenge to the urban population. However, owing to the pandemic situation for Corona virus concomitant lockdown in nearly all parts of the World has already started and in India also, the situation has changed significantly. All development activities were shut down. None can imagine that world is going to be at a stand-still as it is today. The present study is a time series analysis of the particulate matter in the air of 4 major metro cities of India from different corners within a specific time before lockdown, during lockdown and after lockdown, i.e. unlocks periods. Here, for study, Kolkata, Delhi, Mumbai and Chennai were considered. A significant spatial difference was observed and it was found that there was an abrupt decrease in particulate matter values during the lockdown and successive increase in 3 unlock periods. The lockdown phase associated with COVID-19 pandemic started in full swing on and from 25th March, 2020 with the aim to retard the spreading of the virus. Time period for this study was just before lockdown, on the day of lockdown, during lockdown and 3 consecutive unlock periods respectively i.e. from 10th March to 31st July. The in-depth study with the data available of the surface atmospheric level of PM2.5, PM10, CO, SO2, NH3, NO2 from central pollution control board at different places of the cities before and during the lockdown phase shows a significant decrease in the levels of particulate matters in 4 major cities and after lockdown, again increased.
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How to cite this article:
Ratul Datta, Tapati Basu D Litt. Covid-19 has drastically reduced air pollution in 4 metro cities of India: A comparative scholastic study before and after lockdown period. International Journal of Ecology and Environmental Sciences. 2020; 2(4): 170-176.