GSTDTAP  > 地球科学
DOI10.1073/pnas.1619111114
Tropical cyclone activity enhanced by Sahara greening and reduced dust emissions during the African Humid Period
Pausata, Francesco S. R.1,2,8; Emanuel, Kerry A.3; Chiacchio, Marc1,2; Diro, Gulilat T.4; Zhang, Qiong2,5; Sushama, Laxmi4; Stager, J. Curt6; Donnelly, Jeffrey P.7
2017-06-13
发表期刊PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
ISSN0027-8424
出版年2017
卷号114期号:24页码:6221-6226
文章类型Article
语种英语
国家Sweden; USA; Canada
英文摘要

Tropical cyclones (TCs) can have devastating socioeconomic impacts. Understanding the nature and causes of their variability is of paramount importance for society. However, historical records of TCs are too short to fully characterize such changes and paleosediment archives of Holocene TC activity are temporally and geographically sparse. Thus, it is of interest to apply physical modeling to understanding TC variability under different climate conditions. Here we investigate global TC activity during a warm climate state (mid-Holocene, 6,000 yBP) characterized by increased boreal summer insolation, a vegetated Sahara, and reduced dust emissions. We analyze a set of sensitivity experiments in which not only solar insolation changes are varied but also vegetation and dust concentrations. Our results show that the greening of the Sahara and reduced dust loadings lead to more favorable conditions for tropical cyclone development compared with the orbital forcing alone. In particular, the strengthening of the West African Monsoon induced by the Sahara greening triggers a change in atmospheric circulation that affects the entire tropics. Furthermore, whereas previous studies suggest lower TC activity despite stronger summer insolation and warmer sea surface temperature in the Northern Hemisphere, accounting for the Sahara greening and reduced dust concentrations leads instead to an increase of TC activity in both hemispheres, particularly over the Caribbean basin and East Coast of North America. Our study highlights the importance of regional changes in land cover and dust concentrations in affecting the potential intensity and genesis of past TCs and suggests that both factors may have appreciable influence on TC activity in a future warmer climate.


英文关键词hurricanes mid-Holocene dust emissions vegetation changes land cover changes
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:000403179300038
WOS关键词LAKE SEDIMENT RECORD ; HURRICANE ACTIVITY ; HOLOCENE CHANGES ; CLIMATE-CHANGE ; MONSOON ; VARIABILITY ; TERMINATION ; IMPACTS ; FUTURE ; SIMULATIONS
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/204732
专题地球科学
资源环境科学
气候变化
作者单位1.Stockholm Univ, Dept Meteorol, S-10691 Stockholm, Sweden;
2.Bolin Ctr Climate Res, S-10691 Stockholm, Sweden;
3.MIT, Dept Earth Atmospher & Planetary Sci, Program Atmospheres Oceans & Climate, 77 Massachusetts Ave, Cambridge, MA 02139 USA;
4.Univ Quebec Montreal UQAM, Ctr ESCER, Dept Earth & Atmospher Sci, Montreal, PQ H3C 3P8, Canada;
5.Stockholm Univ, Dept Phys Geog, S-10691 Stockholm, Sweden;
6.Paul Smiths Coll, Div Nat Sci, Paul Smiths, NY 12970 USA;
7.Woods Hole Oceanog Inst, Dept Geol & Geophys, Woods Hole, MA 02543 USA;
8.Univ Quebec Montreal UQAM, Dept Earth & Atmospher Sci, Montreal, PQ H3C 3P8, Canada
推荐引用方式
GB/T 7714
Pausata, Francesco S. R.,Emanuel, Kerry A.,Chiacchio, Marc,et al. Tropical cyclone activity enhanced by Sahara greening and reduced dust emissions during the African Humid Period[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2017,114(24):6221-6226.
APA Pausata, Francesco S. R..,Emanuel, Kerry A..,Chiacchio, Marc.,Diro, Gulilat T..,Zhang, Qiong.,...&Donnelly, Jeffrey P..(2017).Tropical cyclone activity enhanced by Sahara greening and reduced dust emissions during the African Humid Period.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,114(24),6221-6226.
MLA Pausata, Francesco S. R.,et al."Tropical cyclone activity enhanced by Sahara greening and reduced dust emissions during the African Humid Period".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 114.24(2017):6221-6226.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Pausata, Francesco S. R.]的文章
[Emanuel, Kerry A.]的文章
[Chiacchio, Marc]的文章
百度学术
百度学术中相似的文章
[Pausata, Francesco S. R.]的文章
[Emanuel, Kerry A.]的文章
[Chiacchio, Marc]的文章
必应学术
必应学术中相似的文章
[Pausata, Francesco S. R.]的文章
[Emanuel, Kerry A.]的文章
[Chiacchio, Marc]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

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。