Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL079336 |
Gulf Stream Variability in the Context of Quasi-Decadal and Multidecadal Atlantic Climate Variability | |
McCarthy, G. D.1; Joyce, T. M.2; Josey, S. A.3 | |
2018-10-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:20页码:11257-11264 |
文章类型 | Article |
语种 | 英语 |
国家 | Ireland; USA; England |
英文摘要 | The Gulf Stream plays an important role in North Atlantic climate variability on a range of timescales. The North Atlantic is notable for large decadal variability in sea surface temperatures (SST). Whether this variability is driven by atmospheric or oceanic influences is a disputed point. Long time series of atmospheric and ocean variables, in particular long time series of Gulf Stream position, reveal differing sources of SST variability on quasi-decadal and multidecadal timescales. On quasi-decadal timescales, an oscillatory signal identified in the North Atlantic Oscillation (NAO) controls SST evolution directly via air-sea heat fluxes. However, on multidecadal timescales, this relationship between the NAO and SST changes, while the relationship between the NAO and Gulf Stream position remains consistent in phase and resonant in amplitude. Recent changes in the Gulf Stream Extension show a weakening and broadening of the current, consistent with increased instability. We consider these changes in the context of a weakening Atlantic overturning circulation. Plain Language Summary The North Atlantic Ocean is a region of remarkable variability in surface temperatures on timescales of decades and longer. Much debate surrounds whether this variability is driven by the atmosphere or by ocean currents, such as the Gulf Stream, moving heat around. In this study, we show that on timescales around 10 years, the atmosphere is the likely cause of Atlantic temperature variability but that this changes when multidecadal variability is considered. Changes ongoing in the Gulf Stream coincide with changes in the broader Atlantic-changes that imply a relatively cooler Atlantic in the coming decades. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000451510500052 |
WOS关键词 | BOUNDARY CURRENT ; OCEAN ; OSCILLATION ; PATH ; CIRCULATION |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/27348 |
专题 | 气候变化 |
作者单位 | 1.Maynooth Univ, Dept Geog, ICARUS, Maynooth, Kildare, Ireland; 2.Woods Hole Oceanog Inst, Dept Phys Oceanog, Woods Hole, MA 02543 USA; 3.Natl Oceanog Ctr, European Way, Southampton, Hants, England |
推荐引用方式 GB/T 7714 | McCarthy, G. D.,Joyce, T. M.,Josey, S. A.. Gulf Stream Variability in the Context of Quasi-Decadal and Multidecadal Atlantic Climate Variability[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(20):11257-11264. |
APA | McCarthy, G. D.,Joyce, T. M.,&Josey, S. A..(2018).Gulf Stream Variability in the Context of Quasi-Decadal and Multidecadal Atlantic Climate Variability.GEOPHYSICAL RESEARCH LETTERS,45(20),11257-11264. |
MLA | McCarthy, G. D.,et al."Gulf Stream Variability in the Context of Quasi-Decadal and Multidecadal Atlantic Climate Variability".GEOPHYSICAL RESEARCH LETTERS 45.20(2018):11257-11264. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论