Scientists collected atmospheric data in India during COVID-19 lockdowns in 2020 and found that black carbon- which is a kind of aerosol- contributes greatly to Indian air pollution.
“Black carbon, a type of aerosol from human activities, was dramatically reduced in northern India in April-May 2020 during COVID-19 lockdowns,” said Xiaohong Liu, professor in the Department of Atmospheric Sciences at Texas A&M University.
Black Carbon has a lot of effects on various aspects of the ecosystem, it alters the way heat is normally absorbed in the atmosphere by blocking sunlight in the upper layers of the atmosphere and making upper layers hotter, and it gets deposited on the glacier in the Himalayan region making the surface darker which makes it absorb more heat. It affects cloud formation and the wind currents responsible for monsoons in India.
It is formed due to the burning of biomass, coal, and stubble from crops in the Indian region. It has always been present in the Indian atmosphere but the COVID lockdown gave scientists a window to understand the effects of Black Carbon in a better way.
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