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According to a report by NASA’s Earth Observatory, the Tropospheric Monitoring Instrument onboard the European Space Agency’s Sentinel-5 satellite and the Ozone Monitoring Instrument on NASA’s Aura satellite reveal a startling reduction in nitrogen dioxide concentrations in the atmosphere over parts of China since February 10, a few weeks after China began mandatory quarantine restrictions in several cities, beginning with Wuhan. It was the first city to report a major outbreak of COVID-19, otherwise known as the coronavirus. Starting January 23, China shut down all transportation routes into and out of Wuhan.
Nitrogen dioxide is a gas emitted by gasoline and diesel powered vehicles, thermal generating plants, and industrial landfills. In other words, it is an indicator of commercial and industrial activity associated with the combustion of fossil fuels. It is normal for the concentration of NO2 to go down during the Lunar New Year celebration that takes place in many Asian countries every February. That’s when many factories close down and people spend less time commuting back and forth to work. Read more: https://www.airmask.shop
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