Satellite Images Show A Remarkable Air Pollution Decrease During The COVID19 Quarantine

by Damjan

COVID19 is taking over our planet and our lives, whether we like to admit it or not. It has placed hundreds of millions of people all over the world in quarantine and captured the minds of billions. And with all this bad news around us, it's refreshing to see some good news. Unfortunately, it's not about a cure for the virus.

European Space Agency (ESA), and several independent researchers reported that nitrogen dioxide emissions have considerably decreased over Italy after the lockdown triggered by the spread of COVID19.

The Copernicus Sentinel-5P satellite discovered a decrease in NO2 emissions, indicating the reduction of air pollution, with the most substantial change being detected in the northern part of the country.

“The decline in nitrogen dioxide emissions over the Po Valley in northern Italy is particularly evident,” Claus Zehner, ESA’s Copernicus Sentinel-5P operation manager stated.

“Although there could be slight variations in the data due to cloud cover and changing weather, we are very confident that the reduction in emissions that we can see, coincides with the lockdown in Italy causing less traffic and industrial activities.”

Scientists and experts are registering a considerable decrease in NO2 levels over Italy

Scientists and experts are registering a considerable decrease in NO2 levels over Italy
via: SanGasso
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“Copernicus Sentinel-5P Tropomi is the most accurate instrument today that measures air pollution from space. These measurements, globally available thanks to the free and open data policy, provide crucial information for citizens and decision makers,” Josef Aschbacher, ESA’s Director of Earth Observation Programmes said.

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The charts show a steady decline in NO2 pollution starting from February 14.

The charts show a steady decline in NO2 pollution starting from February 14.
via: SanGasso
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With a reduced amount of NO2 on February 24.

With a reduced amount of NO2 on February 24.
via: SanGasso

Santiago Gassó, who works as a research associate at NASA, shared the results of the satellite sensor on Twitter. He also clarified that while variable NO2 emissions are typical, because they depend on such factors as the day of the week and time, the change the sensors picked up definitely significant.

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And a considerable reduction in March.

And a considerable reduction in March.
via: SanGasso
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via: SanGasso
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via: SanGasso
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The map shows NO2 pollution readings on the February 8.

The map shows NO2 pollution readings on the February 8.
via: SanGasso
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While this one illustrates the pollution readings on Saturday, March 7.

While this one illustrates the pollution readings on Saturday, March 7.
via: SanGasso
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This is the info shown by the European Space Agency (ESA) that reveals the same tendency

This is the info shown by the European Space Agency (ESA) that reveals the same tendency
via: SanGasso
via: SanGasso
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You can see the time-lapse here:

Several Italians have also reported a more visible change in the environment.

Several Italians have also reported a more visible change in the environment.
via: FolinAlberto
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The canals in Venice became crystal clear because of the decreased traffic during the isolation

The canals in Venice became crystal clear because of the decreased traffic during the isolation
via: FolinAlberto

And how did people across the world react to the story?

And how did people across the world react to the story?
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