Air pollution decreases in the United States after the spread of Corona virus


Air pollution has decreased throughout the United States, with many states imposing closings to prevent the spread of the Corona virus, Los Angeles and New York City are witnessing huge declines in nitrogen dioxide levels, and California has received the largest improvement in air quality, particularly over the central valley where Stricter guidelines for social isolation were implemented.

According to the British newspaper “Daily Mail”, other urban areas, including Seattle and Chicago, showed a decrease after requiring residents to stay in their homes to limit the spread of the virus.

These levels were determined using data captured during the first three weeks of March from the Sentinel-5P satellites, as this pollution stems from fuel combustion, vehicle emissions and power stations.

But over the past few weeks, parts of the United States have imposed closures that allow only necessary travel due to the virus, many unnecessary companies have been closed, curfews have been imposed on some states, and all social gatherings have been canceled until further notice as well.

“This is the first time that I have seen such a big drop in this wide area for a particular event,” said Fei Liu, an air quality researcher at NASA’s Goddard Space Flight Center. “I am not surprised because many cities across the country Measures have been taken to reduce the spread of the virus. ”

Los Angeles has imposed strict social isolation since the beginning of March, and since then, the number of cars on the road has decreased by 40%, eventually reducing the amount of air pollution.

Seattle, which was one of the first outbreaks of the Corona virus, also saw nitrogen dioxide levels drop.

Also, earlier this month, the city of Washington asked residents over the age of 60 to stay indoors and shortly after, Microsoft and Amazon closed their office doors and imposed work from home for their employees, and New York City is the most recent urban area to be closed, which has entered It takes effect last Friday.

Despite this, Columbia University researchers saw carbon monoxide emissions decrease over New York City by more than 50% less than typical levels last week.


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