Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-18-0099.1 |
The Circulation Response to Volcanic Eruptions: The Key Roles of Stratospheric Warming and Eddy Interactions | |
DallaSanta, Kevin1; Gerber, Edwin P.1; Toohey, Matthew2 | |
2019-02-01 | |
发表期刊 | JOURNAL OF CLIMATE
![]() |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2019 |
卷号 | 32期号:4页码:1101-1120 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Germany |
英文摘要 | Proxy data and observations suggest that large tropical volcanic eruptions induce a poleward shift of the North Atlantic jet stream in boreal winter. However, there is far from universal agreement in models on this effect and its mechanism, and the possibilities of a corresponding jet shift in the Southern Hemisphere or the summer season have received little attention. Using a hierarchy of simplified atmospheric models, this study examines the impact of stratospheric aerosol on the extratropical circulation over the annual cycle. In particular, the models allow the separation of the dominant shortwave (surface cooling) and longwave (stratospheric warming) impacts of volcanic aerosol. It is found that stratospheric warming shifts the jet poleward in both the summer and winter hemispheres. The experiments cannot definitively rule out the role of surface cooling, but they provide no evidence that it shifts the jet poleward. Further study with simplified models demonstrates that the response to stratospheric warming is remarkably generic and does not depend critically on the boundary conditions (e.g., the planetary wave forcing) or the atmospheric physics (e.g., the treatment of radiative transfer and moist processes). It does, however, fundamentally involve both zonal-mean and eddy circulation feedbacks. The time scales, seasonality, and structure of the response provide further insight into the mechanism, as well as its connection to modes of intrinsic natural variability. These findings have implications for the interpretation of comprehensive model studies and for postvolcanic prediction. |
英文关键词 | Atmosphere Volcanoes Empirical orthogonal functions General circulation models |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000457325500002 |
WOS关键词 | QUASI-BIENNIAL OSCILLATION ; RELATIVELY SIMPLE AGCM ; NORTHERN-HEMISPHERE ; CLIMATE MODEL ; POLAR VORTEX ; PART I ; PINATUBO ERUPTION ; OZONE DEPLETION ; STORM TRACKS ; SEA-ICE |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
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/20943 |
专题 | 气候变化 |
作者单位 | 1.NYU, Courant Inst Math Sci, Ctr Atmosphere Ocean Sci, New York, NY 10003 USA; 2.GEOMAR Helmholtz Ctr Ocean Res Kiel, Kiel, Germany |
推荐引用方式 GB/T 7714 | DallaSanta, Kevin,Gerber, Edwin P.,Toohey, Matthew. The Circulation Response to Volcanic Eruptions: The Key Roles of Stratospheric Warming and Eddy Interactions[J]. JOURNAL OF CLIMATE,2019,32(4):1101-1120. |
APA | DallaSanta, Kevin,Gerber, Edwin P.,&Toohey, Matthew.(2019).The Circulation Response to Volcanic Eruptions: The Key Roles of Stratospheric Warming and Eddy Interactions.JOURNAL OF CLIMATE,32(4),1101-1120. |
MLA | DallaSanta, Kevin,et al."The Circulation Response to Volcanic Eruptions: The Key Roles of Stratospheric Warming and Eddy Interactions".JOURNAL OF CLIMATE 32.4(2019):1101-1120. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论