globalchange  > 影响、适应和脆弱性
DOI: 10.1088/1748-9326/10/9/094010
论文题名:
Tropical origin for the impacts of the Atlantic Multidecadal Variability on the Euro-Atlantic climate
作者: Paolo Davini; Jost von Hardenberg; Susanna Corti
刊名: Environmental Research Letters
ISSN: 1748-9326
出版年: 2015
发表日期: 2015-09-08
卷: 10, 期:9
语种: 英语
英文摘要:

Atlantic Multidecadal Variability (AMV) is known for influencing the mid-latitude climate variability, especially over the European region. This letter assesses the impact of the wintertime AMV in a group of 200-year atmospheric-only numerical experiments, in which the atmosphere is forced with positive and negative AMV-like sea surface temperatures (SSTs) and sea ice concentration patterns. Anomalies are applied separately to the whole North Atlantic ocean, to the extratropics (north of 30° N) and to the tropics (between 0° and 30° N). Results show that AMV anomalies considerably affect the North Atlantic Oscillation (NAO), the jet stream variability and the frequency of atmospheric blocking over the Euro-Atlantic sector, resulting in a negative (positive) NAO during positive (negative) AMV. It is found that the bulk of the signal is originated in the tropics and it is associated with a Gill-like response—an anomalous upper tropospheric streamfunction dipole over the tropical Atlantic driven by the SST anomalies—and with the subsequent structural change of the upper-tropospheric jet, which affects the propagation of Rossby waves in the North Atlantic. Conversely, the NAO response is almost negligible when the AMV anomalies are applied only to the extratropics, suggesting that the relevance of SST anomalies along the North Atlantic frontal zone may be overestimated.

URL: http://iopscience.iop.org/article/10.1088/1748-9326/10/9/094010
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/14290
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
Davini_2015_Environ._Res._Lett._10_094010.pdf(2019KB)期刊论文作者接受稿开放获取View Download

作者单位: Institute of Atmospheric Sciences and Climate, ISAC-CNR, Turin, Italy;Institute of Atmospheric Sciences and Climate, ISAC-CNR, Turin, Italy;Institute of Atmospheric Sciences and Climate, ISAC-CNR, Bologna, Italy

Recommended Citation:
Paolo Davini,Jost von Hardenberg,Susanna Corti. Tropical origin for the impacts of the Atlantic Multidecadal Variability on the Euro-Atlantic climate[J]. Environmental Research Letters,2015-01-01,10(9)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Paolo Davini]'s Articles
[Jost von Hardenberg]'s Articles
[Susanna Corti]'s Articles
百度学术
Similar articles in Baidu Scholar
[Paolo Davini]'s Articles
[Jost von Hardenberg]'s Articles
[Susanna Corti]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Paolo Davini]‘s Articles
[Jost von Hardenberg]‘s Articles
[Susanna Corti]‘s Articles
Related Copyright Policies
Null
收藏/分享
文件名: Davini_2015_Environ._Res._Lett._10_094010.pdf
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.