气候变化领域集成服务门户(CCPortal): Climate Impacts of COVID-19 Induced Emission Changes

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DOI	10.1029/2020GL091805
	Climate Impacts of COVID-19 Induced Emission Changes
	Gettelman A.; Lamboll R.; Bardeen C.G.; Forster P.M.; Watson-Parris D.
发表日期	2021
ISSN	0094-8276
卷号	48 期号:3
英文摘要	The COVID-19 pandemic led to dramatic changes in economic activity in 2020. We use estimates of emission changes for 2020 in two Earth System Models (ESMs) to simulate the impacts of the COVID-19 economic changes. Ensembles of nudged simulations are used to separate small signals from meteorological variability. Reductions in aerosol and precursor emissions, chiefly black carbon and sulfate (SO4), led to reductions in total anthropogenic aerosol cooling through aerosol-cloud interactions. The average overall Effective Radiative Forcing (ERF) peaks at +0.29 ± 0.15 Wm−2 in spring 2020. Changes in cloud properties are smaller than observed changes during 2020. Impacts of these changes on regional land surface temperature range up to +0.3 K. The peak impact of these aerosol changes on global surface temperature is very small (+0.03 K). However, the aerosol changes are the largest contribution to radiative forcing and temperature changes as a result of COVID-19 affected emissions, larger than ozone, CO2 and contrail effects. © 2020. The Authors.
英文关键词	Aerosols; Atmospheric radiation; Atmospheric temperature; Economics; Sulfur compounds; Surface properties; Aerosol-cloud interaction; Anthropogenic aerosols; Earth system model; Economic activities; Global surface temperature; Meteorological variability; Radiative forcings; Temperature changes; Land surface temperature
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169135
作者单位	National Center for Atmospheric Research, Boulder, CO, United States; Atmospheric, Oceanic and Planetary Physics, Oxford University, Oxford, United Kingdom; Imperial College, London, United Kingdom; Priestly Centre, University of Leeds, Leeds, United Kingdom
推荐引用方式 GB/T 7714	Gettelman A.,Lamboll R.,Bardeen C.G.,et al. Climate Impacts of COVID-19 Induced Emission Changes[J],2021,48(3).
APA	Gettelman A.,Lamboll R.,Bardeen C.G.,Forster P.M.,&Watson-Parris D..(2021).Climate Impacts of COVID-19 Induced Emission Changes.Geophysical Research Letters,48(3).
MLA	Gettelman A.,et al."Climate Impacts of COVID-19 Induced Emission Changes".Geophysical Research Letters 48.3(2021).