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DOI | 10.1175/JCLI-D-16-0127.1 |
Assessing the Climate Impacts of the Observed Atlantic Multidecadal Variability Using the GFDL CM2.1 and NCAR CESM1 Global Coupled Models | |
Ruprich-Robert, Yohan1,2; Msadek, Rym2,3; Castruccio, Frederic4; Yeager, Stephen4; Delworth, Tom2; Danabasoglu, Gokhan4 | |
2017-04-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2017 |
卷号 | 30期号:8 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; France |
英文摘要 | The climate impacts of the observed Atlantic multidecadal variability(AMV) are investigated using the GFDL CM2.1 and the NCAR CESM1 coupled climate models. The model North Atlantic sea surface temperatures are restored to fixed anomalies corresponding to an estimate of the internally driven component of the observed AMV. Both models show that during boreal summer the AMV alters the Walker circulation and generates precipitation anomalies over the whole tropical belt. A warm phase of the AMV yields reduced precipitation over the western United States, drier conditions over the Mediterranean basin, and wetter conditions over northern Europe. During boreal winter, the AMV modulates by a factor of about 2 the frequency of occurrence of El Nino and La Nina events. This response is associated with anomalies over the Pacific that project onto the interdecadal Pacific oscillation pattern (i.e., Pacific decadal oscillation-like anomalies in the Northern Hemisphere and a symmetrical pattern in the Southern Hemisphere). This winter response is a lagged adjustment of the Pacific Ocean to the AMV forcing in summer. Most of the simulated global-scale impacts are driven by the tropical part of the AMV, except for the winter North Atlantic Oscillation-like response over the North Atlantic-European region, which is driven by both the subpolar and tropical parts of the AMV. The teleconnections between the Pacific and Atlantic basins alter the direct North Atlantic local response to the AMV, which highlights the importance of using a global coupled framework to investigate the climate impacts of the AMV. The similarity of the two model responses gives confidence that impacts described in this paper are robust. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000399679900005 |
WOS关键词 | SEA-SURFACE TEMPERATURE ; MERIDIONAL OVERTURNING CIRCULATION ; PACIFIC DECADAL OSCILLATION ; NORTH-ATLANTIC ; THERMOHALINE CIRCULATION ; ATMOSPHERIC CIRCULATION ; TROPICAL PACIFIC ; REGIME SHIFTS ; OCEAN ; ENSO |
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/21269 |
专题 | 气候变化 |
作者单位 | 1.Princeton Univ, Atmosphere & Ocean Sci, Princeton, NJ 08544 USA; 2.NOAA, Geophys Fluid Dynam Lab, Princeton, NJ 08540 USA; 3.CNRS, CERFACS, CECI UMR 5318, Toulouse, France; 4.Natl Ctr Atmospher Res, Climate & Global Dynam Lab, POB 3000, Boulder, CO 80307 USA |
推荐引用方式 GB/T 7714 | Ruprich-Robert, Yohan,Msadek, Rym,Castruccio, Frederic,et al. Assessing the Climate Impacts of the Observed Atlantic Multidecadal Variability Using the GFDL CM2.1 and NCAR CESM1 Global Coupled Models[J]. JOURNAL OF CLIMATE,2017,30(8). |
APA | Ruprich-Robert, Yohan,Msadek, Rym,Castruccio, Frederic,Yeager, Stephen,Delworth, Tom,&Danabasoglu, Gokhan.(2017).Assessing the Climate Impacts of the Observed Atlantic Multidecadal Variability Using the GFDL CM2.1 and NCAR CESM1 Global Coupled Models.JOURNAL OF CLIMATE,30(8). |
MLA | Ruprich-Robert, Yohan,et al."Assessing the Climate Impacts of the Observed Atlantic Multidecadal Variability Using the GFDL CM2.1 and NCAR CESM1 Global Coupled Models".JOURNAL OF CLIMATE 30.8(2017). |
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