Fast Climate Responses to Aerosol Emission Reductions During the COVID-19 Pandemic

被引：64
|
作者：
Yang, Yang [1 ]
Ren, Lili [1 ]
Li, Huimin [1 ]
Wang, Hailong [2 ]
Wang, Pinya [1 ]
Chen, Lei [1 ]
Yue, Xu [1 ]
Liao, Hong [1 ]
机构：
[1] Nanjing Univ Informat Sci & Technol, Jiangsu Key Lab Atmospher Environm Monitoring & P, Jiangsu Collaborat Innovat Ctr Atmospher Environm, Sch Environm Sci & Engn, Nanjing, Peoples R China
[2] Pacific Northwest Natl Lab, Atmospher Sci & Global Change Div, Richland, WA 99352 USA
来源：
GEOPHYSICAL RESEARCH LETTERS | 2020年 / 47卷 / 19期
基金：
中国国家自然科学基金;
关键词：
COVID-19; climate response; aerosol; emission reduction; global warming; BLACK CARBON; SOURCE ATTRIBUTION; SULFATE AEROSOLS; TRENDS; REPRESENTATION; ATMOSPHERE;
D O I：
10.1029/2020GL089788
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
The reduced human activities and associated decreases in aerosol emissions during the COVID-19 pandemic are expected to affect climate. Assuming emission changes during lockdown, back-to-work and post-lockdown stages of COVID-19, climate model simulations show a surface warming over continental regions of the Northern Hemisphere. In January-March, there was an anomalous warming of 0.05-0.15 K in eastern China, and the surface temperature increase was 0.04-0.07 K in Europe, eastern United States, and South Asia in March-May. The longer the emission reductions undergo, the warmer the climate would become. The emission reductions explain the observed temperature increases of 10-40% over eastern China relative to 2019. A southward shift of the ITCZ is also seen in the simulations. This study provides an insight into the impact of COVID-19 pandemic on global and regional climate and implications for immediate actions to mitigate fast global warming.
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页数：9
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