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DOI | 10.1175/JCLI-D-16-0751.1 |
Simultaneous Evolution of Gyre and Atlantic Meridional Overturning Circulation Anomalies as an Eigenmode of the North Atlantic System | |
Zhao, Bowen1; Reichler, Thomas1; Strong, Courtenay1; Penland, Cecile2 | |
2017-09-01 | |
发表期刊 | JOURNAL OF CLIMATE
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ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2017 |
卷号 | 30期号:17 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The authors identify an interdecadal oscillatory mode of the North Atlantic atmosphere-ocean system in a general circulation model (GFDL CM2.1) via a linear inverse model (LIM). The oscillation mechanism is mostly embedded in the subpolar gyre: anomalous advection generates density anomalies in the eastern subpolar gyre, which propagate along the mean gyre circulation and reach the subpolar gyre center around 10 years later, when associated anomalous advection of the opposite sign starts the other half cycle. As density anomalies reach the Labrador Sea deep convection region, Atlantic meridional overturning circulation (AMOC) anomalies are also induced. Both the gyre and AMOC anomalies then propagate equatorward slowly, following the advection of density anomalies. The oscillation is further demonstrated to be more likely an ocean-only mode while excited by the atmospheric forcing; in particular, it can be approximated as a linearly driven damped oscillator that is partly excited by the North Atlantic Oscillation (NAO). The slowly evolving interdecadal oscillation significantly improves and prolongs the LIM's prediction skill of sea surface temperature (SST) evolution. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000407276600009 |
WOS关键词 | SEA-SURFACE TEMPERATURES ; COUPLED CLIMATE MODELS ; HEAT-FLUX ANOMALIES ; OCEAN MODEL ; MULTIDECADAL VARIABILITY ; INTERANNUAL VARIABILITY ; GENERAL-CIRCULATION ; OSCILLATION ; PREDICTABILITY ; MECHANISMS |
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/19794 |
专题 | 气候变化 |
作者单位 | 1.Univ Utah, Dept Atmospher Sci, Salt Lake City, UT 84112 USA; 2.NOAA, Earth Syst Res Lab, Phys Sci Div, Boulder, CO USA |
推荐引用方式 GB/T 7714 | Zhao, Bowen,Reichler, Thomas,Strong, Courtenay,et al. Simultaneous Evolution of Gyre and Atlantic Meridional Overturning Circulation Anomalies as an Eigenmode of the North Atlantic System[J]. JOURNAL OF CLIMATE,2017,30(17). |
APA | Zhao, Bowen,Reichler, Thomas,Strong, Courtenay,&Penland, Cecile.(2017).Simultaneous Evolution of Gyre and Atlantic Meridional Overturning Circulation Anomalies as an Eigenmode of the North Atlantic System.JOURNAL OF CLIMATE,30(17). |
MLA | Zhao, Bowen,et al."Simultaneous Evolution of Gyre and Atlantic Meridional Overturning Circulation Anomalies as an Eigenmode of the North Atlantic System".JOURNAL OF CLIMATE 30.17(2017). |
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