气候变化领域集成服务门户(CCPortal): Weakening of the Extratropical Storm Tracks in Solar Geoengineering Scenarios

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DOI	10.1029/2020GL087348
	Weakening of the Extratropical Storm Tracks in Solar Geoengineering Scenarios
	Gertler C.G.; O'Gorman P.A.; Kravitz B.; Moore J.C.; Phipps S.J.; Watanabe S.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:11
英文摘要	Solar geoengineering that aims to offset global warming could nonetheless alter atmospheric temperature gradients and humidity and thus affect the extratropical storm tracks. Here, we first analyze climate model simulations from experiment G1 of the Geoengineering Model Intercomparison Project, in which a reduction in incoming solar radiation balances a quadrupling of CO2. The Northern Hemisphere extratropical storm track weakens by a comparable amount in G1 as it does for increased CO2 only. The Southern Hemisphere storm track also weakens in G1, in contrast to a strengthening and poleward shift for increased CO2. Using mean available potential energy, we show that the changes in zonal-mean temperature and humidity are sufficient to explain the different responses of storm-track intensity. We also demonstrate similar weakening in a more complex geoengineering scenario. Our results offer insight into how geoengineering affects storm tracks, highlighting the potential for geoengineering to induce novel climate changes. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Atmospheric humidity; Carbon dioxide; Climate models; Global warming; Potential energy; Climate model simulations; Extratropical storms; Geoengineering; Model inter comparisons; Northern Hemispheres; Poleward shift; Radiation balance; Southern hemisphere storm tracks; Storms; air temperature; climate modeling; experimental study; extratropical cyclone; global warming; Northern Hemisphere; scenario analysis; solar radiation; storm; storm track
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/170269
作者单位	Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, United States; Department of Earth and Atmospheric Sciences, Indiana University, Bloomington, IN, United States; Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland, WA, United States; College of Global Change and Earth System Science, Beijing Normal University, Beijing, China; Arctic Centre, University of Lapland, Rovaniemi, Finland; Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Australia; Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokohama, Japan
推荐引用方式 GB/T 7714	Gertler C.G.,O'Gorman P.A.,Kravitz B.,et al. Weakening of the Extratropical Storm Tracks in Solar Geoengineering Scenarios[J],2020,47(11).
APA	Gertler C.G.,O'Gorman P.A.,Kravitz B.,Moore J.C.,Phipps S.J.,&Watanabe S..(2020).Weakening of the Extratropical Storm Tracks in Solar Geoengineering Scenarios.Geophysical Research Letters,47(11).
MLA	Gertler C.G.,et al."Weakening of the Extratropical Storm Tracks in Solar Geoengineering Scenarios".Geophysical Research Letters 47.11(2020).