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DOI | 10.1007/s00382-016-3354-6 |
Arctic climate and its interaction with lower latitudes under different levels of anthropogenic warming in a global coupled climate model | |
Koenigk, Torben1,3; Brodeau, Laurent2,3 | |
2017-07-01 | |
发表期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2017 |
卷号 | 49 |
文章类型 | Article |
语种 | 英语 |
国家 | Sweden |
英文摘要 | Three quasi-equilibrium simulations using constant greenhouse gas forcing corresponding to years 2000, 2015 and 2030 have been performed with the global coupled model EC-Earth in order to analyze the Arctic climate and interactions with lower latitudes under different levels of anthropogenic warming. The model simulations indicate an accelerated warming and ice extent reduction in the Arctic between the year-2030 and year-2015 simulations compared to the change between the year-2015 and year-2000 simulations. Both Arctic warming and sea ice reduction are closely linked to the increase of ocean heat transport into the Arctic, particularly through the Barents Sea Opening. Decadal variations of Arctic sea ice extent and ice volume are of the same order of magnitude as the observed ice extent reductions in the last 30 years and are dominated by the variability of the ocean heat transports through the Barents Sea Opening and the Bering Strait. Despite a general warming of mid and high northern latitudes, a substantial cooling is found in the subpolar gyre of the North Atlantic under year-2015 and year-2030 conditions. This cooling is related to a strong reduction in the AMOC, itself due to reduced deep water formation in the Labrador Sea. The observed trend towards a more negative phase of the North Atlantic Oscillation (NAO) and the observed linkage between autumn Arctic ice variations and NAO are reproduced in our model simulations for selected 30-year periods but are not robust over longer time periods. This indicates that the observed linkages between ice and NAO might not be robust in reality either, and that the observational time period is still too short to reliably separate the trend from the natural variability. |
英文关键词 | Arctic climate change Climate variability Global climate modelling Coupled simulations Arctic-lower latitude interactions |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000403716500028 |
WOS关键词 | SEA-ICE ANOMALIES ; ATMOSPHERIC RESPONSE ; VARIABILITY ; AMPLIFICATION ; CIRCULATION ; FEEDBACKS ; EMERGENCE ; THICKNESS ; IMPACTS ; STREAM |
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/35306 |
专题 | 气候变化 |
作者单位 | 1.Swedish Meteorol & Hydrol Inst, Rossby Ctr, S-60176 Norrkoping, Sweden; 2.Stockholm Univ, Dept Meteorol, S-10691 Stockholm, Sweden; 3.Stockholm Univ, Bolin Ctr Climate Res, S-10691 Stockholm, Sweden |
推荐引用方式 GB/T 7714 | Koenigk, Torben,Brodeau, Laurent. Arctic climate and its interaction with lower latitudes under different levels of anthropogenic warming in a global coupled climate model[J]. CLIMATE DYNAMICS,2017,49. |
APA | Koenigk, Torben,&Brodeau, Laurent.(2017).Arctic climate and its interaction with lower latitudes under different levels of anthropogenic warming in a global coupled climate model.CLIMATE DYNAMICS,49. |
MLA | Koenigk, Torben,et al."Arctic climate and its interaction with lower latitudes under different levels of anthropogenic warming in a global coupled climate model".CLIMATE DYNAMICS 49(2017). |
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