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

被引：65

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.

引用

页数：9

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