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《新科学家》 第3582期 · 2026年2月14日 · 中文解读

封锁期间排放减少与甲烷快速上升有关

Lower emissions during lockdown linked to rapid rise in methane · Alec Luhn
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一项新研究发现,新冠封锁期间空气污染下降改变了大气化学,导致甲烷水平激增,这对未来全球变暖具有令人担忧的影响。
原文开头
A DROP in air pollution during the covid-19 lockdowns changed the chemistry of the atmosphere, driving a surge in methane levels that has concerning implications for future global warming. Transportation emissions were reduced during the covid-19 lockdowns TAYFUN COSKUN/ANADOLU AGENCY VIA GETTY IMAGES In 2020-2022, the increase in atmospheric methane surged from about 20 million tonnes per year to about 40 million tonnes per year, before returning to about 20 million in 2023. New research suggests the main reason is that covid-19 lockdowns reduced emissions from sectors like transportation, aviation and shipping, including emissions of nitrogen oxides (NOx). These compounds catalyse reactions that produce hydroxyl radicals (OH), which break down methane. Less NOx typically means more methane. …
摘自《新科学家》(New Scientist)第3582期 · 2026年2月14日,Alec Luhn。仅引用开头一小段供了解文章,版权归原刊所有,全文请阅读原刊。
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