globalchange  > 气候变化事实与影响
Scopus记录号: 2-s2.0-85060919271
论文题名:
Disproportionately strong climate forcing from extratropical explosive volcanic eruptions
作者: Toohey M.; Krüger K.; Schmidt H.; Timmreck C.; Sigl M.; Stoffel M.; Wilson R.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2019
卷: 12, 期:2
起始页码: 100
结束页码: 107
语种: 英语
英文摘要: Extratropical volcanic eruptions are commonly thought to be less effective at driving large-scale surface cooling than tropical eruptions. However, recent minor extratropical eruptions have produced a measurable climate impact, and proxy records suggest that the most extreme Northern Hemisphere cold period of the Common Era was initiated by an extratropical eruption in 536 ce. Using ice-core-derived volcanic stratospheric sulfur injections and Northern Hemisphere summer temperature reconstructions from tree rings, we show here that in proportion to their estimated stratospheric sulfur injection, extratropical explosive eruptions since 750 ce have produced stronger hemispheric cooling than tropical eruptions. Stratospheric aerosol simulations demonstrate that for eruptions with a sulfur injection magnitude and height equal to that of the 1991 Mount Pinatubo eruption, extratropical eruptions produce time-integrated radiative forcing anomalies over the Northern Hemisphere extratropics up to 80% greater than tropical eruptions, as decreases in aerosol lifetime are overwhelmed by the enhanced radiative impact associated with the relative confinement of aerosol to a single hemisphere. The model results are consistent with the temperature reconstructions, and elucidate how the radiative forcing produced by extratropical eruptions is strongly dependent on the eruption season and sulfur injection height within the stratosphere. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122602
Appears in Collections:气候变化事实与影响

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作者单位: GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany; Department of Geosciences, University of Oslo, Oslo, Norway; Max Planck Institute for Meteorology, Hamburg, Germany; Laboratory of Environmental Chemistry, Paul Scherrer Institute, Villigen, Switzerland; Oeschger Centre for Climate Change Research, Bern, Switzerland; Climate Change Impacts and Risks in the Anthropocene (C-CIA), Institute for Environmental Sciences, University of Geneva, Geneva, Switzerland; dendrolab.ch, Department of Earth Sciences, University of Geneva, Geneva, Switzerland; Department F.-A. Forel for Aquatic and Environmental Sciences, University of Geneva, Geneva, Switzerland; School of Earth and Environmental Sciences, University of St Andrews, Fife, United Kingdom; Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States

Recommended Citation:
Toohey M.,Krüger K.,Schmidt H.,et al. Disproportionately strong climate forcing from extratropical explosive volcanic eruptions[J]. Nature Geoscience,2019-01-01,12(2)
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