气候变化领域集成服务门户(CCPortal): Robust winter warming over Eurasia under stratospheric sulfate geoengineering

CCPortal

DOI	10.5194/acp-21-6985-2021
	Robust winter warming over Eurasia under stratospheric sulfate geoengineering - The role of stratospheric dynamics
	Banerjee A.; Butler A.H.; Polvani L.M.; Robock A.; Simpson I.R.; Sun L.
发表日期	2021
ISSN	1680-7316
起始页码	6985
结束页码	6997
卷号	21 期号:9
英文摘要	It has been suggested that increased stratospheric sulfate aerosol loadings following large, low latitude volcanic eruptions can lead to wintertime warming over Eurasia through dynamical stratosphere-troposphere coupling. We here investigate the proposed connection in the context of hypothetical future stratospheric sulfate geoengineering in the Geoengineering Large Ensemble simulations. In those geoengineering simulations, we find that stratospheric circulation anomalies that resemble the positive phase of the Northern Annular Mode in winter are a distinguishing climate response which is absent when increasing greenhouse gases alone are prescribed. This stratospheric dynamical response projects onto the positive phase of the North Atlantic Oscillation, leading to associated side effects of this climate intervention strategy, such as continental Eurasian warming and precipitation changes. Seasonality is a key signature of the dynamically driven surface response.We find an opposite response of the North Atlantic Oscillation in summer, when no dynamical role of the stratosphere is expected. The robustness of the wintertime forced response stands in contrast to previously proposed volcanic responses. © Author(s) 2021.
语种	英语
scopus关键词	aerosol; engineering; ensemble forecasting; stratosphere-troposphere interaction; sulfate; volcanic eruption; warming; winter; Eurasia
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/246909
作者单位	Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, United States; National Oceanic and Atmospheric Administration, Chemical Sciences Laboratory, Boulder, CO, United States; Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY, United States; Department of Environmental Sciences, Rutgers University, New Brunswick, NJ, United States; Climate and Global Dynamics Laboratory, National Center for Atmospheric Research, Boulder, CO, United States; Department of Atmospheric Science, Colorado State University, Fort Collins, CO, United States
推荐引用方式 GB/T 7714	Banerjee A.,Butler A.H.,Polvani L.M.,et al. Robust winter warming over Eurasia under stratospheric sulfate geoengineering - The role of stratospheric dynamics[J],2021,21(9).
APA	Banerjee A.,Butler A.H.,Polvani L.M.,Robock A.,Simpson I.R.,&Sun L..(2021).Robust winter warming over Eurasia under stratospheric sulfate geoengineering - The role of stratospheric dynamics.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(9).
MLA	Banerjee A.,et al."Robust winter warming over Eurasia under stratospheric sulfate geoengineering - The role of stratospheric dynamics".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.9(2021).