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DOI | 10.1007/s00382-018-4151-1 |
The role of local sea surface temperature pattern changes in shaping climate change in the North Atlantic sector | |
Hand, Ralf1; Keenlyside, Noel S.2,3,4; Omrani, Nour-Eddine2,3; Bader, Juergen1; Greatbatch, Richard J.5,6 | |
2019 | |
发表期刊 | CLIMATE DYNAMICS
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ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2019 |
卷号 | 52页码:417-438 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; Norway |
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. |
英文关键词 | Climate change North Atlantic Ocean-atmosphere interaction |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000460619200025 |
WOS关键词 | HYDROLOGICAL CYCLE ; GULF-STREAM ; REGION ; SCHEME ; IMPACT |
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/35995 |
专题 | 气候变化 |
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 |
推荐引用方式 GB/T 7714 | 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,2019,52:417-438. |
APA | Hand, Ralf,Keenlyside, Noel S.,Omrani, Nour-Eddine,Bader, Juergen,&Greatbatch, Richard J..(2019).The role of local sea surface temperature pattern changes in shaping climate change in the North Atlantic sector.CLIMATE DYNAMICS,52,417-438. |
MLA | Hand, Ralf,et al."The role of local sea surface temperature pattern changes in shaping climate change in the North Atlantic sector".CLIMATE DYNAMICS 52(2019):417-438. |
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