University of Minnesota study shows reduced air pollution during COVID pandemic

A study by the University of Minnesota concludes that air pollution across the country is decreasing during the COVID-19 pandemic.

Researchers at the University’s School of Public Health investigated changes in two forms of air pollution in 122 counties from March 13 to April 21, and their levels were traced back to 2017 at the same date and location. I compared.

Specifically, this study examined nitrogen dioxide and particulate matter, a pollutant that can cause some health problems, such as cardiovascular, respiratory, and neurological disorders. The research team also investigated the differences between urban and rural counties, and whether those counties initiated closures early in the pandemic, late in the pandemic, or at all.

Researchers found that nitrogen dioxide levels decreased by 25.5% over the previous year during the study period. This was true in all counties, both rural and urban, whether or not they closed their business early in the pandemic. We also found that particulate matter declined slightly across the country during the survey period, but declined 4.7% in urban counties and 11.3% in counties that closed their businesses early.

The research was published in an academic journal Science of the whole environment..

According to the researchers, the reduction in nitrogen dioxide was probably associated with a reduction in vehicle traffic. Researchers speculate that particulate levels were not significantly reduced during the study, as particulates were produced through a variety of industries including food manufacturing, construction and energy production.

“It has been shown that high air pollution, including the 2002 SARS outbreak, can play a role in exacerbating respiratory illness,” says Associate Professor. Jesse Berman, The lead author of the study, said in a press release.

Berman added that although air pollution has improved temporarily, overall air quality is still at risk of pollution and government protection regulations need to be enforced. He added that the reduction in air pollution and its potential benefits would be temporary, as policies to slow the COVID pandemic have been relaxed.

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