Scientists have theorized that COVID-19 lockdowns may have helped decrease the amount of lightning produced in the atmosphere in the year 2020, according to a recent study.
A study presented at the fall meeting of the American Geophysical Union (AGU) analyzed atmospheric factors that may have contributed to reductions of 10-20%, depending on how lightning is counted.
Earle Williams, a physical meteorologist at the Massachusetts Institute of Technology and the presenting author, said the team used three different methods to measure the lightning, but all methods pointed to a reduction of activity.
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The study focused on Aerosol Optical Depth (AOD), which measures particles produced by burning fossil fuels. These particles can act to accelerate and enhance the collection of water vapor and cloud formation.
More particles absorb more moisture, limiting the amount of rain and creating small ice crystals that collide in the cloud and build up the charges that typically create lightning. The study compared lightning activity and aerosol levels in the period between March and May 2020 to the same period during 2018 – 2021.
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The AGU noted that the reduction in lightning was generally consistent with reductions of aerosol particles in the same regions over Africa, Europe, and Asia. The study noted lesser reductions over much of the Americas.
The areas with more significant decreases in aerosol had similarly more significant reductions in lightning activity.
The reduction of aerosols appears to have had a number of linked effects.
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A study published late last year found that the reduction of air pollution may have also led to fewer heart attacks. Researchers found the average daily concentration of particulate matter measured under 2.5 micrometers in diameter – the limit at which doctors say the pollutants can contribute to increased risk of myocardial infarctions, the most severe form of heart attack.
Fox News’ Julia Musto contributed to this report.