Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1612505114 |
Role of eruption season in reconciling model and proxy responses to tropical volcanism | |
Stevenson, Samantha1; Fasullo, John T.1; Otto-Bliesner, Bette L.1; Tomas, Robert A.1; Gao, Chaochao2 | |
2017-02-21 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2017 |
卷号 | 114期号:8页码:1822-1826 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Peoples R China |
英文摘要 | The response of the El Nino/Southern Oscillation (ENSO) to tropical volcanic eruptions has important worldwide implications, but remains poorly constrained. Paleoclimate records suggest an "El Nino-like" warming 1 year following major eruptions [Adams JB, Mann ME, Ammann CM (2003) Nature 426: 274-278] and " La Nina-like" cooling within the eruption year [Li J, et al. (2013) Nat Clim Chang 3: 822-826]. However, climate models currently cannot capture all these responses. Many eruption characteristics are poorly constrained, which may contribute to uncertainties in model solutions-for example, the season of eruption occurrence is often unknown and assigned arbitrarily. Here we isolate the effect of eruption season using experiments with the Community Earth System Model (CESM), varying the starting month of two large tropical eruptions. The eruption-year atmospheric circulation response is strongly seasonally dependent, with effects on European winter warming, the Intertropical Convergence Zone, and the southeast Asian monsoon. This creates substantial variations in eruption-year hydroclimate patterns, which do sometimes exhibit La Nina-like features as in the proxy record. However, eruption-year equatorial Pacific cooling is not driven by La Nina dynamics, but strictly by transient radiative cooling. In contrast, equatorial warming the following year occurs for all starting months and operates dynamically like El Nino. Proxy reconstructions confirm these results: eruption-year cooling is insignificant, whereas warming in the following year is more robust. This implies that accounting for the event season may be necessary to describe the initial response to volcanic eruptions and that climate models may be more accurately simulating volcanic influences than previously thought. |
英文关键词 | climate dynamics ENSO volcanic eruptions paleoclimate hydroclimate |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000395099500051 |
WOS关键词 | EL-NINO ; LAST MILLENNIUM ; EQUATORIAL PACIFIC ; ENSO ; CLIMATE ; HYDROCLIMATE |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
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/204856 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Natl Ctr Atmospher Res, Climate & Global Dynam Lab, Boulder, CO 80305 USA; 2.Zhejiang Univ, Coll Environm & Resource Sci, Hangzhou 310058, Zhejiang, Peoples R China |
推荐引用方式 GB/T 7714 | Stevenson, Samantha,Fasullo, John T.,Otto-Bliesner, Bette L.,et al. Role of eruption season in reconciling model and proxy responses to tropical volcanism[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2017,114(8):1822-1826. |
APA | Stevenson, Samantha,Fasullo, John T.,Otto-Bliesner, Bette L.,Tomas, Robert A.,&Gao, Chaochao.(2017).Role of eruption season in reconciling model and proxy responses to tropical volcanism.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,114(8),1822-1826. |
MLA | Stevenson, Samantha,et al."Role of eruption season in reconciling model and proxy responses to tropical volcanism".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 114.8(2017):1822-1826. |
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