Satellite image showing increased air pollution after normalization

With the coronavirus epidemic, international locations began to use quarantine, and severe decreases had been recorded in air pollution.

The European House Company (ESA) in contrast the February months of 2019, 2020 and 2021 with the pictures it created with information from the Copernicus Sentinel-5P satellite tv for pc.


In satellite tv for pc pictures showing China, it was revealed that air pollution decreased in February 2020, when the quarantine interval was skilled, however in February 2021, when the restrictions had been lifted, the pollution returned to 2019 ranges.

Within the assertion made on the ESA web site, “On January 23, 2020, the world noticed the primary coronavirus lockdown take impact in Wuhan, China, in an try to cease the unfold of the epidemic. Every day actions, together with site visitors, had been halted throughout the nation. Factories and different industries had been closed.


Related measures had been taken world wide within the weeks and months that adopted. Because of this, a major discount in air pollution throughout China has been detected by satellites. That included decreased nitrogen dioxide emissions.” it was mentioned.

Nitrogen dioxide is named an air pollutant on account of fossil gasoline combustion in industrial processes and site visitors.

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Satellite image #1 showing an increase in air pollution after normalization


It was acknowledged that after the restrictions had been lifted, air pollution began to rise once more.

The info confirmed that nitrogen dioxide concentrations in Beijing, the Chinese language capital, fell by about 35 % between February 2019 and 2020, earlier than returning to comparable ranges in February 2021.

In the identical interval, it was famous that the nitrogen dioxide fee within the metropolis of Chongqing decreased by about 45 %.

Claus Zehner, Copernicus Sentinel-5P mission supervisor, “Within the coming weeks and months, we count on will increase in nitrogen dioxide concentrations in Europe as nicely.” mentioned.

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