论文标题
Covid-19爆发后，中国对流层二氧化氮的突然下降
Abrupt declines in tropospheric nitrogen dioxide over China after the outbreak of COVID-19
论文作者
论文摘要
中国减少2019年冠状病毒疾病传播的政策干预措施具有环境和经济影响。对流层二氧化氮表示经济活动，因为二氧化氮主要是从化石燃料消耗中发出的。卫星测量结果表明，从2020年Lunar New年之前的20天平均到后20天平均的20天平均，对流层二氧化二氧化碳的垂直柱密度下降了48％。这比近年来大20％。我们将这种减少与政府的两项行动有关：在每个省份的第一份报告和省份封锁之日发布。两种动作都与减少的幅度几乎相同。我们的分析通过减少的经济活动对意想不到的环境和经济后果提供了见解。
China's policy interventions to reduce the spread of the coronavirus disease 2019 have environmental and economic impacts. Tropospheric nitrogen dioxide indicates economic activities, as nitrogen dioxide is primarily emitted from fossil fuel consumption. Satellite measurements show a 48% drop in tropospheric nitrogen dioxide vertical column densities from the 20 days averaged before the 2020 Lunar New Year to the 20 days averaged after. This is 20% larger than that from recent years. We relate to this reduction to two of the government's actions: the announcement of the first report in each province and the date of a province's lockdown. Both actions are associated with nearly the same magnitude of reductions. Our analysis offers insights into the unintended environmental and economic consequences through reduced economic activities.
