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DOI | 10.1175/JCLI-D-18-0307.1 |
Modulation of Arctic Sea Ice Loss by Atmospheric Teleconnections from Atlantic Multidecadal Variability | |
Castruccio, Frederic S.1; Ruprich-Robert, Yohan2; Yeager, Stephen G.1; Danabasoglu, Gokhan1; Msadek, Rym3; Delworth, Thomas L.4 | |
2019-03-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2019 |
卷号 | 32期号:5页码:1419-1441 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Spain; France |
英文摘要 | Observed September Arctic sea ice has declined sharply over the satellite era. While most climate models forced by observed external forcing simulate a decline, few show trends matching the observations, suggesting either model deficiencies or significant contributions from internal variability. Using a set of perturbed climate model experiments, we provide evidence that atmospheric teleconnections associated with the Atlantic multidecadal variability (AMV) can drive low-frequency Arctic sea ice fluctuations. Even without AMV-related changes in ocean heat transport, AMV-like surface temperature anomalies lead to adjustments in atmospheric circulation patterns that produce similar Arctic sea ice changes in three different climate models. Positive AMV anomalies induce a decrease in the frequency of winter polar anticyclones, which is reflected both in the sea level pressure as a weakening of the Beaufort Sea high and in the surface temperature as warm anomalies in response to increased low-cloud cover. Positive AMV anomalies are also shown to favor an increased prevalence of an Arctic dipole-like sea level pressure pattern in late winter/early spring. The resulting anomalous winds drive anomalous ice motions (dynamic effect). Combined with the reduced winter sea ice formation (thermodynamic effect), the Arctic sea ice becomes thinner, younger, and more prone to melt in summer. Following a phase shift to positive AMV, the resulting atmospheric teleconnections can lead to a decadal ice thinning trend in the Arctic Ocean on the order of 8%-16% of the reconstructed long-term trend, and a decadal trend (decline) in September Arctic sea ice area of up to 21% of the observed long-term trend. |
英文关键词 | Climate variability Climate models Multidecadal variability |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000457452900002 |
WOS关键词 | CLIMATE ; CIRCULATION ; TEMPERATURE ; OCEAN ; SURFACE ; TRENDS ; THICKNESS ; EXPORT ; MODEL ; OSCILLATION |
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/19347 |
专题 | 气候变化 |
作者单位 | 1.Natl Ctr Atmospher Res, Climate & Global Dynam Lab, POB 3000, Boulder, CO 80307 USA; 2.Barcelona Supercomp Ctr, Barcelona, Spain; 3.CNRS, UMR 5318, Ctr Europeen Rech & Format Avancee Calcul Sci, CECI, Toulouse, France; 4.NOAA, Geophys Fluid Dynam Lab, Princeton, NJ USA |
推荐引用方式 GB/T 7714 | Castruccio, Frederic S.,Ruprich-Robert, Yohan,Yeager, Stephen G.,et al. Modulation of Arctic Sea Ice Loss by Atmospheric Teleconnections from Atlantic Multidecadal Variability[J]. JOURNAL OF CLIMATE,2019,32(5):1419-1441. |
APA | Castruccio, Frederic S.,Ruprich-Robert, Yohan,Yeager, Stephen G.,Danabasoglu, Gokhan,Msadek, Rym,&Delworth, Thomas L..(2019).Modulation of Arctic Sea Ice Loss by Atmospheric Teleconnections from Atlantic Multidecadal Variability.JOURNAL OF CLIMATE,32(5),1419-1441. |
MLA | Castruccio, Frederic S.,et al."Modulation of Arctic Sea Ice Loss by Atmospheric Teleconnections from Atlantic Multidecadal Variability".JOURNAL OF CLIMATE 32.5(2019):1419-1441. |
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