globalchange  > 气候减缓与适应
DOI: 10.1007/s00382-018-4151-1
WOS记录号: WOS:000460619200025
论文题名:
The role of local sea surface temperature pattern changes in shaping climate change in the North Atlantic sector
作者: Hand, Ralf1; Keenlyside, Noel S.2,3,4; Omrani, Nour-Eddine2,3; Bader, Juergen1; Greatbatch, Richard J.5,6
通讯作者: Hand, Ralf
刊名: CLIMATE DYNAMICS
ISSN: 0930-7575
EISSN: 1432-0894
出版年: 2019
卷: 52, 期:1-2, 页码:417-438
语种: 英语
英文关键词: Climate change ; North Atlantic ; Ocean-atmosphere interaction
WOS关键词: HYDROLOGICAL CYCLE ; GULF-STREAM ; REGION ; SCHEME ; IMPACT
WOS学科分类: Meteorology & Atmospheric Sciences
WOS研究方向: Meteorology & Atmospheric Sciences
英文摘要:

Beside its global effects, climate change is manifested in many regionally pronounced features mainly resulting from changes in the oceanic and atmospheric circulation. Here we investigate the influence of the North Atlantic SST on shaping the winter-time response to global warming. Our results are based on a long-term climate projection with the Max Planck Institute Earth System Model (MPI-ESM) to investigate the influence of North Atlantic sea surface temperature pattern changes on shaping the atmospheric climate change signal. In sensitivity experiments with the model's atmospheric component we decompose the response into components controlled by the local SST structure and components controlled by global/remote changes. MPI-ESM simulates a global warming response in SST similar to other climate models: there is a warming minimumor warming holein the subpolar North Atlantic, and the sharp SST gradients associated with the Gulf Stream and the North Atlantic Current shift northward by a few a degrees. Over the warming hole, global warming causes a relatively weak increase in rainfall. Beyond this, our experiments show more localized effects, likely resulting from future SST gradient changes in the North Atlantic. This includes a significant precipitation decrease to the south of the Gulf Stream despite increased underlying SSTs. Since this region is characterised by a strong band of precipitation in the current climate, this is contrary to the usual case that wet regions become wetter and dry regions become drier in a warmer climate. A moisture budget analysis identifies a complex interplay of various processes in the region of modified SST gradients: reduced surface winds cause a decrease in evaporation; and thermodynamic, modified atmospheric eddy transports, and coastal processes cause a change in the moisture convergence. The changes in the the North Atlantic storm track are mainly controlled by the non-regional changes in the forcing. The impact of the local SST pattern changes on regions outside the North Atlantic is small in our setup.


Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/125043
Appears in Collections:气候减缓与适应

Files in This Item:

There are no files associated with this item.


作者单位: 1.Max Planck Inst Meteorol, Bundesstr 53, D-20146 Hamburg, Germany
2.Univ Bergen, Geophys Inst, Allegaten 70, N-5020 Bergen, Norway
3.Univ Bergen, Bjerknes Ctr Climate Res, Allegaten 70, N-5020 Bergen, Norway
4.Nansen Environm & Remote Sensing Ctr, Thormohlens Gate 47, N-5006 Bergen, Norway
5.GEOMAR Helmholtz Ctr Ocean Res Kiel, Dusternbrooker Weg 20, D-24105 Kiel, Germany
6.Univ Kiel, Christian Albrechts Pl 4, D-24118 Kiel, Germany

Recommended Citation:
Hand, Ralf,Keenlyside, Noel S.,Omrani, Nour-Eddine,et al. The role of local sea surface temperature pattern changes in shaping climate change in the North Atlantic sector[J]. CLIMATE DYNAMICS,2019-01-01,52(1-2):417-438
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Hand, Ralf]'s Articles
[Keenlyside, Noel S.]'s Articles
[Omrani, Nour-Eddine]'s Articles
百度学术
Similar articles in Baidu Scholar
[Hand, Ralf]'s Articles
[Keenlyside, Noel S.]'s Articles
[Omrani, Nour-Eddine]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Hand, Ralf]‘s Articles
[Keenlyside, Noel S.]‘s Articles
[Omrani, Nour-Eddine]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

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