Multidecadal climate oscillations during the past millennium driven by volcanic forcing

doi:10.1126/science.abc5810

GSTDTAP > 气候变化

DOI	10.1126/science.abc5810
	Multidecadal climate oscillations during the past millennium driven by volcanic forcing
	Michael E. Mann; Byron A. Steinman; Daniel J. Brouillette; Sonya K. Miller
	2021-03-05
发表期刊	Science
出版年	2021
英文摘要	The Atlantic Multidecadal Oscillation (AMO), a 50- to 70-year quasiperiodic variation of climate centered in the North Atlantic region, was long thought to be an internal oscillation of the climate system. Mann et al. now show that this variation is forced externally by episodes of high-amplitude explosive volcanism. They used an ensemble of climate models to evaluate the causes of the AMO, finding that volcanos are the most important influence, and that there is no evidence to show that it has been internally generated during the last millennium. Science , this issue p. [1014][1] Past research argues for an internal multidecadal (40- to 60-year) oscillation distinct from climate noise. Recent studies have claimed that this so-termed Atlantic Multidecadal Oscillation is instead a manifestation of competing time-varying effects of anthropogenic greenhouse gases and sulfate aerosols. That conclusion is bolstered by the absence of robust multidecadal climate oscillations in control simulations of current-generation models. Paleoclimate data, however, do demonstrate multidecadal oscillatory behavior during the preindustrial era. By comparing control and forced “Last Millennium” simulations, we show that these apparent multidecadal oscillations are an artifact of pulses of volcanic activity during the preindustrial era that project markedly onto the multidecadal (50- to 70-year) frequency band. We conclude that there is no compelling evidence for internal multidecadal oscillations in the climate system. [1]: /lookup/doi/10.1126/science.abc5810
领域	气候变化 ; 资源环境
URL	查看原文
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/316996
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Michael E. Mann,Byron A. Steinman,Daniel J. Brouillette,et al. Multidecadal climate oscillations during the past millennium driven by volcanic forcing[J]. Science,2021.
APA	Michael E. Mann,Byron A. Steinman,Daniel J. Brouillette,&Sonya K. Miller.(2021).Multidecadal climate oscillations during the past millennium driven by volcanic forcing.Science.
MLA	Michael E. Mann,et al."Multidecadal climate oscillations during the past millennium driven by volcanic forcing".Science (2021).