Arid
DOI10.1016/j.quascirev.2015.08.012
Arctic climate response to the termination of the African Humid Period
Muschitiello, Francesco1,2; Zhang, Qiong1,3; Sundqvist, Hanna S.1,3; Davies, Frazer J.4; Renssen, Hans4
通讯作者Muschitiello, Francesco
来源期刊QUATERNARY SCIENCE REVIEWS
ISSN0277-3791
出版年2015
卷号125页码:91-97
英文摘要

The Earth’s climate response to the rapid vegetation collapse at the termination of the African Humid Period (AHP) (5.5-5.0 kyr BP) is still lacking a comprehensive investigation. Here we discuss the sensitivity of mid-Holocene Arctic climate to changes in albedo brought by a rapid desertification of the Sahara. By comparing a network of surface temperature reconstructions with output from a coupled global climate model, we find that, through a system of land-atmosphere feedbacks, the end of the AHP reduced the atmospheric and oceanic poleward heat transport from tropical to high northern latitudes. This entails a general weakening of the mid-latitude Westerlies, which results in a shift towards cooling over the Arctic and North Atlantic regions, and a change from positive to negative Arctic Oscillation-like conditions. This mechanism would explain the sign of rapid hydro-climatic perturbations recorded in several reconstructions from high northern latitudes at 5.5-5.0 kyr BP, suggesting that these regions are sensitive to changes in Saharan land cover during the present interglacial. This is central in the debate surrounding Arctic climate amplification and future projections for subtropical precipitation changes. (C) 2015 Elsevier Ltd. All rights reserved.


英文关键词Mid Holocene African Humid period Arctic climate Atmospheric circulation
类型Article
语种英语
国家Sweden ; Netherlands
收录类别SCI-E
WOS记录号WOS:000362049400006
WOS关键词HOLOCENE ATMOSPHERIC CIRCULATION ; SEA-ICE ; GYRE CIRCULATION ; DUST DEPOSITION ; SIMULATIONS ; VARIABILITY ; DYNAMICS ; PRECIPITATION ; FLUCTUATIONS ; VEGETATION
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向Physical Geography ; Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/190088
作者单位1.Stockholm Univ, Bolin Ctr Climate Res, SE-10691 Stockholm, Sweden;
2.Stockholm Univ, Dept Geol Sci, SE-10691 Stockholm, Sweden;
3.Stockholm Univ, Dept Phys Geog & Quaternary Geol, SE-10691 Stockholm, Sweden;
4.Vrije Univ Amsterdam, Dept Earth Sci, NL-1081 HV Amsterdam, Netherlands
推荐引用方式
GB/T 7714
Muschitiello, Francesco,Zhang, Qiong,Sundqvist, Hanna S.,et al. Arctic climate response to the termination of the African Humid Period[J],2015,125:91-97.
APA Muschitiello, Francesco,Zhang, Qiong,Sundqvist, Hanna S.,Davies, Frazer J.,&Renssen, Hans.(2015).Arctic climate response to the termination of the African Humid Period.QUATERNARY SCIENCE REVIEWS,125,91-97.
MLA Muschitiello, Francesco,et al."Arctic climate response to the termination of the African Humid Period".QUATERNARY SCIENCE REVIEWS 125(2015):91-97.
条目包含的文件
文件名称/大小 资源类型 版本类型 开放类型 使用许可
Arctic climate respo(1830KB)期刊论文出版稿开放获取CC BY-NC-SA浏览
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Muschitiello, Francesco]的文章
[Zhang, Qiong]的文章
[Sundqvist, Hanna S.]的文章
百度学术
百度学术中相似的文章
[Muschitiello, Francesco]的文章
[Zhang, Qiong]的文章
[Sundqvist, Hanna S.]的文章
必应学术
必应学术中相似的文章
[Muschitiello, Francesco]的文章
[Zhang, Qiong]的文章
[Sundqvist, Hanna S.]的文章
相关权益政策
暂无数据
收藏/分享
文件名: Arctic climate response to the termination of the African Humid Period.pdf
格式: Adobe PDF
此文件暂不支持浏览

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。