气候变化领域集成服务门户(CCPortal): Impact of the 2018 Ambae Eruption on the Global Stratospheric Aerosol Layer and Climate

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DOI	10.1029/2020JD032410
	Impact of the 2018 Ambae Eruption on the Global Stratospheric Aerosol Layer and Climate
	Kloss C.; Sellitto P.; Legras B.; Vernier J.-P.; Jégou F.; Venkat Ratnam M.; Suneel Kumar B.; Lakshmi Madhavan B.; Berthet G.
发表日期	2020
ISSN	2169897X
卷号	125 期号:14
英文摘要	During an extended volcanic unrest starting in 2017, two main moderate stratospheric eruptions occurred at the Ambae volcano (15°S and 167°E), Vanuatu, in April and July 2018. Observations from a geostationary orbit show that the April and July eruptions injected a volcanic plume into the lower stratosphere. While aerosol enhancements from the April eruption have only had an impact on the Southern Hemisphere, the plume from the July eruption was distributed within the lower branch of the Brewer–Dobson circulation to both hemispheres. Satellite, ground-based and in situ observations show that the background aerosol is enhanced throughout the year after the July eruption on a global scale. A volcanic-induced perturbation of the global stratospheric aerosol optical depth up to 0.011 is found, in the ultraviolet/visible spectral range. This perturbation is comparable to that of recent moderate stratospheric eruptions like from Kasatochi, Sarychev, and Nabro. Top of the atmosphere radiative forcing values are estimated between −0.45 and −0.6 W/m2 for this event, showing that the Ambae eruption had the strongest climatic impact of the year 2018. Thus, the Ambae eruption in 2018 has to be taken into account when studying the decadal lower stratospheric aerosol budget and in climate studies. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	aerosol; Ambae; climate; stratosphere; volcanic plumes; volcano
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185908
作者单位	Laboratoire de Physique et Chimie de l'Environnement et de l'Espace, CNRS/Université d'Orléans, UMR 7328, Orléans, France; Laboratoire Interuniversitaire des Systèmes Atmosphériques, UMR CNRS 7583, Université Paris-Est Créteil, Université de Paris, Institut Pierre Simon Laplace, Créteil, France; Laboratoire de Météorologie Dynamique, UMR 8539, CNRS École-PSL/Sorbonne Université/École Polytechnique, Paris, France; Science Systems and Applications, Inc, Hampton, VA, United States; NASA Langley Research Center, Hampton, VA, United States; National Atmospheric Research Laboratory, Department of Space, Gadanki-517112, India; National Balloon Facility, TIFR, Hyderabad, India
推荐引用方式 GB/T 7714	Kloss C.,Sellitto P.,Legras B.,et al. Impact of the 2018 Ambae Eruption on the Global Stratospheric Aerosol Layer and Climate[J],2020,125(14).
APA	Kloss C..,Sellitto P..,Legras B..,Vernier J.-P..,Jégou F..,...&Berthet G..(2020).Impact of the 2018 Ambae Eruption on the Global Stratospheric Aerosol Layer and Climate.Journal of Geophysical Research: Atmospheres,125(14).
MLA	Kloss C.,et al."Impact of the 2018 Ambae Eruption on the Global Stratospheric Aerosol Layer and Climate".Journal of Geophysical Research: Atmospheres 125.14(2020).