Impact of COVID-19 induced lockdown and unlock down phases on the ambient air quality of Delhi, capital city of India.

ABSTRACT: The present study deals with the impact of the pandemic outbreak of COVID-19 on the ambient air quality in the capital city of India. Real-time data were collected from eight continuous ambient air quality monitoring stations measuring important air quality parameters (NO₂, PM₁₀ and PM_2.5). Results revealed that the city's air quality had improved significantly during the lockdown period due to COVID-19 outbreak. The concentration of gaseous and particulate matter during the lockdown period (March-May 2020) declined significantly compared with the preceding years' data from the same timeframe. However, the ambient air quality deteriorates with the onset of unlocking phases and post-monsoon season (October 2020). Higher concentration of NO₂, PM

SUBMITTER: Pandey M 

PROVIDER: S-EPMC8339501 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature