Proxy evidence for an El Nino-like response to volcanic forcing

J. Brad Adams; Michael E. Mann; Caspar M. Ammann

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Proxy evidence for an El Nino-like response to volcanic forcing

机译：类似于El Nino的火山强迫反应的代理证据

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Past studies have suggested a statistical connection between explosive volcanic eruptions and subsequent El Nino climate events. This connection, however, has remained controversial. Here we present support for a response of the El Nino/Southern Oscillation (ENSO) phenomenon to forcing from explosive volcanism by using two different palaeoclimate reconstructions of El Nino activity and two independent, proxy-based chronologies of explosive volcanic activity from AD 1649 to the present. We demonstrate a significant, multi-year, El Nino-like response to explosive tropical volcanic forcing over the past several centuries. The results imply roughly a doubling of the probability of an El Nino event occurring in the winter following a volcanic eruption. Our empirical findings shed light on how the tropical Pacific ocean-atmosphere system may respond to exogenous (both natural and anthropogenic) radiative forcing.

机译：过去的研究表明，爆炸性火山爆发与随后的厄尔尼诺现象之间存在统计联系。但是，这种联系仍然存在争议。在这里，我们通过使用两种不同的厄尔尼诺活动古气候重建和两种独立的基于代理的爆炸性火山活动（从公元1649年到现在）来支持厄尔尼诺/南方涛动（ENSO）现象对爆炸性火山强迫的响应。当下。在过去的几个世纪中，我们证明了对厄尔尼诺现象的重大而多年的反应，这是对热带火山爆发的反应。结果表明，在火山喷发后冬季发生厄尔尼诺现象的可能性大约增加了一倍。我们的经验发现揭示了热带太平洋-大气系统如何应对外源（自然和人为）辐射强迫。

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《Nature》 |2003年第6964期|p.274-278|共5页
作者
J. Brad Adams; Michael E. Mann; Caspar M. Ammann;
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作者单位

Department of Environmental Sciences, University of Virginia, Clark Hall, Charlottesville, Virginia 22903, USA;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种 eng
中图分类自然科学总论;
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3. Discrepancies between the modeled and proxy-reconstructed response to volcanic forcing over the past millennium: Implications and possible mechanisms [J] . Mann M.E., Rutherford S., Schurer A., Journal of Geophysical Research, D. Atmospheres: JGR . 2013,第14期

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6. Atmospheric constituents and surface-level UVB: Implications for a paleoaltimetry proxy and attempts to reconstruct UV exposure during volcanic episodes [O] . Brian C. Thomas, Byron D. Goracke, Sean M. Dalton -1

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Proxy evidence for an El Nino-like response to volcanic forcing

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