气候变化领域集成服务门户(CCPortal): Large Variations in Volcanic Aerosol Forcing Efficiency Due to Eruption Source Parameters and Rapid Adjustments

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DOI	10.1029/2020GL090241
	Large Variations in Volcanic Aerosol Forcing Efficiency Due to Eruption Source Parameters and Rapid Adjustments
	Marshall L.R.; Smith C.J.; Forster P.M.; Aubry T.J.; Andrews T.; Schmidt A.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:19
英文摘要	The relationship between volcanic stratospheric aerosol optical depth (SAOD) and volcanic radiative forcing is key for quantifying volcanic climate impacts. In their Fifth Assessment Report, the Intergovernmental Panel on Climate Change used one scaling factor between volcanic SAOD and volcanic forcing based on climate model simulations of the 1991 Mt. Pinatubo eruption, which may not be appropriate for all eruptions. Using a large ensemble of aerosol-chemistry-climate simulations of eruptions with different sulfur dioxide emissions, latitudes, emission altitudes, and seasons, we find that the effective radiative forcing (ERF) is on average 20% less than the instantaneous radiative forcing, predominantly due to a positive shortwave cloud adjustment. In our model, the volcanic SAOD-ERF relationship is non-unique and varies widely depending on time since an eruption, eruption latitude, and season due to differences in aerosol dispersion and incoming solar radiation. Our revised SAOD-ERF relationships suggest that volcanic forcing has been previously overestimated. ©2020. The Authors.
英文关键词	Aerosols; Atmospheric movements; Atmospheric radiation; Climate change; Sulfur dioxide; Volcanoes; Aerosol dispersion; Climate model simulations; Climate simulation; Intergovernmental panel on climate changes; Radiative forcings; Stratospheric aerosols; Sulfur dioxide emissions; Volcanic aerosols; Climate models; aerosol; climate effect; climate modeling; Intergovernmental Panel on Climate Change; optical depth; parameterization; radiative forcing; stratosphere; sulfur dioxide; volcanic eruption; Central Luzon; Luzon; Mount Pinatubo; Philippines; Zambales
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/169680
作者单位	Department of Chemistry, University of Cambridge, Cambridge, United Kingdom; Priestley International Centre for Climate, University of Leeds, Leeds, United Kingdom; International Institute for Applied Systems Analysis (IIASA), Laxenburg, Austria; Department of Geography, University of Cambridge, Cambridge, United Kingdom; Met Office Hadley Centre, Exeter, United Kingdom
推荐引用方式 GB/T 7714	Marshall L.R.,Smith C.J.,Forster P.M.,et al. Large Variations in Volcanic Aerosol Forcing Efficiency Due to Eruption Source Parameters and Rapid Adjustments[J],2020,47(19).
APA	Marshall L.R.,Smith C.J.,Forster P.M.,Aubry T.J.,Andrews T.,&Schmidt A..(2020).Large Variations in Volcanic Aerosol Forcing Efficiency Due to Eruption Source Parameters and Rapid Adjustments.Geophysical Research Letters,47(19).
MLA	Marshall L.R.,et al."Large Variations in Volcanic Aerosol Forcing Efficiency Due to Eruption Source Parameters and Rapid Adjustments".Geophysical Research Letters 47.19(2020).