這算意外收穫?
據美國《ABC》報導，美國麻省理工學院（MIT）學者威廉斯（Earle Williams）領銜的團隊近日發表研究證實，2020年3月至5月間，全球各地的「春雷」較2018、2019、2021同期間減少了19%，應是受到疫情隔離影響。
科學家認為，閃電、打雷與大氣中的懸浮微粒（aerosols）密切關聯，而因為疫情社會封鎖，人類燃燒石化燃料等行為減少，人為的懸浮微粒濃度大幅降低，也導致閃電、打雷的機率大幅降低。"
全球各大區域的差異:
"In addition, the results showed that places with more dramatic reductions in atmospheric aerosols tended to also have the greatest reductions in lightning. Southeast Asia, Europe and most of Africa saw some of the greatest reductions both in atmospheric aerosols and lightning, while the Americas had less dramatic changes. Williams said he isn't sure why there was a weaker reduction in aerosol concentration in the Americas, but he pointed out that an increase in aerosol concentration in northern South America could be due to fires."
https://abcnews.go.com/Technology/lightning-covid-lockdowns/story?id=82143368
