| DOI: | 10.1002/2013GL058162
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| 论文题名: | Bidecadal sea level modes in the North and South Atlantic Oceans |
| 作者: | Vianna M.L.; Menezes V.V.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8378
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| EISSN: | 1944-8109
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| 出版年: | 2013
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| 卷: | 40, 期:22 | | 起始页码: | 5926
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| 结束页码: | 5931
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| 语种: | 英语
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| 英文关键词: | AMOC fingerprints
; interdecadal variability
; regime shift
; SODA
; thermal Rossby waves
; westward propagation
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| Scopus关键词: | AMOC fingerprints
; Inter-decadal variability
; Regime shift
; SODA
; Thermal Rossby waves
; Mechanical waves
; Tropics
; Sea level
; bottom topography
; data assimilation
; decadal variation
; gyre
; overturn
; Rossby wave
; sea level change
; temporal analysis
; twentieth century
; Atlantic Ocean
; Atlantic Ocean (North)
; Atlantic Ocean (South)
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| 英文摘要: | The relationship between the North and South Atlantic bidecadal sea level (SL) oscillations during the twentieth century is investigated for the first time using Simple Ocean Data Assimilation reanalysis. Complex empirical orthogonal function analysis of the bidecadal band gives two dominant modes: the first dominating from 1915 to 1965 and the second from 1970 onward. The long-term time-dependent change of mode dominance suggests a structural-type regime shift. The first mode is characterized by states with North and South Atlantic subtropical gyres in phase, while tropical and subpolar regions are in opposite phase relative to them. The second mode is characterized by the subpolar gyre and North subtropical gyre almost in quadrature, with North and South subtropical gyres out of phase. Thermal Rossby waves are very clear only in the second mode. These waves seem to be influenced by bottom topography. Known Atlantic meridional overturning circulation (AMOC) sea level fingerprints and AMOC strength indices are discussed in the bidecadal oscillations context. ©2013. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84890511022&doi=10.1002%2f2013GL058162&partnerID=40&md5=5301c1e3279b9ac33d7af87cd69ee771
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/5642
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| Appears in Collections: | 气候减缓与适应
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作者单位: | VM Oceanica, Sao Jose dos Campos, Brazil
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| Recommended Citation: | |
Vianna M.L.,Menezes V.V.. Bidecadal sea level modes in the North and South Atlantic Oceans[J]. Geophysical Research Letters,2013-01-01,40(22).
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