Compensatory effect of biomass burning on black carbon concentrations during COVID-19 lockdown at a high-altitude station in SW India.

Conversely, recent studies over the Indian subcontinent using satellite data ( Ratnam et al., 2021 ; Bhawar et al., 2021 ; Pandey and Vinoj, 2021 ) revealed that the central Indian region showed an increasing trend in aerosol optical depth (AOD) during the lockdown period, although there was a decrease over the Indo-Gangetic Plain (IGP) region and other parts of India.

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The comparison between the mean organic mass concentrations during the pre-lockdown and lockdown periods of 2017, 2018, and 2020 revealed a decreasing trend.

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