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Major News and Events of 23 April 2020

What Happened on 23 April 2020


23 April 2020 Current Events NASA Observes 20-year Low Air Pollution in Northern India

As per satellite data released by US space agency National Aeronautics and Space Administration (NASA), air pollution over northern India has fallen headlong to a "20-year-low" for this time of the year. The US space agency observed the aerosol level to drop at a 20-year low post lockdown amid COVID-19 pandemic (Spread of Covid-19 in India). Pawan Gupta, a scientist at NASA's Marshall Space Flight Center, said that positive changes in atmospheric composition were expected. Still, it is unexpected to see aerosol values to go so low in the "Indo-Gangetic Plain" at this time of the year. Aerosols are fine solid particles which get suspended in the air and reduce visibility. Though, the change in the pollution signature in the initial period of lockdown was not as extensive since the aerosol decrease was a combination of rain and lockdown. But after the rainfall, the aerosol level did not go up and the pollution level gradually decreased.


NASA Observes 20-year Low Air Pollution in Northern India

As per satellite data released by US space agency National Aeronautics and Space Administration (NASA), air pollution over northern India has fallen headlong to a "20-year-low" for this time of the year. The US space agency observed the aerosol level to drop at a 20-year low post lockdown amid COVID-19 pandemic (Spread of Covid-19 in India). Pawan Gupta, a scientist at NASA's Marshall Space Flight Center, said that positive changes in atmospheric composition were expected. Still, it is unexpected to see aerosol values to go so low in the "Indo-Gangetic Plain" at this time of the year. Aerosols are fine solid particles which get suspended in the air and reduce visibility. Though, the change in the pollution signature in the initial period of lockdown was not as extensive since the aerosol decrease was a combination of rain and lockdown. But after the rainfall, the aerosol level did not go up and the pollution level gradually decreased.




FAQs and Answers on Indian History and Geography
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