气候变化领域集成服务门户(CCPortal): Reduced Poleward Transport Due to Stratospheric Heating Under Stratospheric Aerosols Geoengineering

CCPortal

DOI	10.1029/2020GL089470
	Reduced Poleward Transport Due to Stratospheric Heating Under Stratospheric Aerosols Geoengineering
	Visioni D.; MacMartin D.G.; Kravitz B.; Lee W.; Simpson I.R.; Richter J.H.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:17
英文摘要	By injecting SO2 into the stratosphere at four latitudes (30°, 15°N/S), it might be possible not only to reduce global mean surface temperature but also to minimize changes in the equator-to-pole and inter-hemispheric gradients of temperature, further reducing some of the impacts arising from climate change relative to equatorial injection. This can happen only if the aerosols are transported to higher latitudes by the stratospheric circulation, ensuring that a greater part of the solar radiation is reflected back to space at higher latitudes, compensating for the reduced sunlight. However, the stratospheric heating produced by these aerosols modifies the circulation and strengthens the stratospheric polar vortex which acts as a barrier to the transport of air toward the poles. We show how the heating results in a feedback where increasing injection rates lead to stronger high-latitudinal transport barriers. This implies a potential limitation in the high-latitude aerosol burden and subsequent cooling. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Climate change; Poles; Sulfur dioxide; Global mean surface temperature; Higher latitudes; Injection rates; Stratospheric aerosols; Stratospheric circulations; Stratospheric polar vortex; Subsequent cooling; Transport barrier; Aerosols; aerosol; atmospheric circulation; gradient analysis; heating; polar vortex; solar radiation; stratosphere; sulfur dioxide
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/169827
作者单位	Sibley School for Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY, United States; Department of Earth and Atmospheric Science, Indiana University, Bloomington, IN, United States; Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland, WA, United States; Climate and Global Dynamics Laboratory, National Center for Atmospheric Research, Boulder, CO, United States
推荐引用方式 GB/T 7714	Visioni D.,MacMartin D.G.,Kravitz B.,et al. Reduced Poleward Transport Due to Stratospheric Heating Under Stratospheric Aerosols Geoengineering[J],2020,47(17).
APA	Visioni D.,MacMartin D.G.,Kravitz B.,Lee W.,Simpson I.R.,&Richter J.H..(2020).Reduced Poleward Transport Due to Stratospheric Heating Under Stratospheric Aerosols Geoengineering.Geophysical Research Letters,47(17).
MLA	Visioni D.,et al."Reduced Poleward Transport Due to Stratospheric Heating Under Stratospheric Aerosols Geoengineering".Geophysical Research Letters 47.17(2020).