Major influence of tropical volcanic eruptions on the stratospheric aerosol layer during the last decade

被引：274

作者：

Vernier, J. -P. ^{[1
,2
]}

Thomason, L. W. ^{[1
]}

Pommereau, J. -P. ^{[2
]}

Bourassa, A. ^{[3
]}

Pelon, J. ^{[2
]}

Garnier, A. ^{[2
]}

Hauchecorne, A. ^{[2
]}

Blanot, L. ^{[2
,4
]}

Trepte, C. ^{[1
]}

Degenstein, Doug ^{[3
]}

Vargas, F. ^{[5
]}

机构：

[1] NASA Langley Res Ctr, Hampton, VA 23666 USA

[2] Univ Paris 06, Univ Versailles St Quentin, LATMOS, CNRS,INSU, F-78280 Guyancourt, France

[3] Univ Saskatchewan, Inst Space & Atmospher Studies, Saskatoon, SK S7N 5E, Canada

[4] ACRI ST, F-06904 Sophia Antipolis, France

[5] Paraiba Valley Univ, Inst Res & Dev, BR-12244000 Sao Jose Dos Campos, SP, Brazil

来源：

GEOPHYSICAL RESEARCH LETTERS | 2011年 / 38卷

关键词：

TRANSPORT; LIDAR;

D O I：

10.1029/2011GL047563

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The variability of stratospheric aerosol loading between 1985 and 2010 is explored with measurements from SAGE II, CALIPSO, GOMOS/ENVISAT, and OSIRIS/Odin space-based instruments. We find that, following the 1991 eruption of Mount Pinatubo, stratospheric aerosol levels increased by as much as two orders of magnitude and only reached "background levels" between 1998 and 2002. From 2002 onwards, a systematic increase has been reported by a number of investigators. Recently, the trend, based on ground-based lidar measurements, has been tentatively attributed to an increase of SO2 entering the stratosphere associated with coal burning in Southeast Asia. However, we demonstrate with these satellite measurements that the observed trend is mainly driven by a series of moderate but increasingly intense volcanic eruptions primarily at tropical latitudes. These events injected sulfur directly to altitudes between 18 and 20 km. The resulting aerosol particles are slowly lofted into the middle stratosphere by the Brewer-Dobson circulation and are eventually transported to higher latitudes. Citation: Vernier, J.-P., et al. (2011), Major influence of tropical volcanic eruptions on the stratospheric aerosol layer during the last decade, Geophys. Res. Lett., 38, L12807, doi:10.1029/2011GL047563.

引用

页数：8

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