DOI: | 10.1002/2014GL062523
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论文题名: | Trends in the Brazil/Malvinas Confluence region |
作者: | Combes V.; Matano R.P.
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刊名: | Geophysical Research Letters
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ISSN: | 0094-9458
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EISSN: | 1944-9189
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出版年: | 2014
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卷: | 41, 期:24 | 起始页码: | 8971
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结束页码: | 8977
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语种: | 英语
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英文关键词: | Brazil Current
; Brazil Malvinas Confluence
; Malvinas Current
; trend
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Scopus关键词: | Earth sciences
; Geophysics
; Antarctic Circumpolar Currents
; Brazil Current
; Brazil-Malvinas Confluence
; Numerical experiments
; Oceanic circulations
; Southwestern Atlantic
; Spectral characteristics
; Trend
; Ocean currents
; annual variation
; Antarctic Circumpolar Wave
; confluence
; oceanic circulation
; spectral resolution
; trend analysis
; Atlantic Ocean
; Brazil Current
; Malvinas Current
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英文摘要: | Observations show abrupt changes in the oceanic circulation of the southwestern Atlantic. These studies report a southward drift of the Brazil/Malvinas Confluence (BMC) and a change in the spectral characteristics of the Malvinas Current (MC) transport. We address the cause of these changes using the result of a high-resolution numerical experiment. The experiment, which is consistent with observations, shows a southward BMC displacement at a rate of 0.62°/decade between 1993 and 2008, and a shift of the spectral characteristics of the MC transport after 1999. We find that these changes are driven by a weakening of the northern branch of the Antarctic Circumpolar Current, which translates to a weakening of the MC transport and a southward BMC drift. The drift changes the spectral characteristics of the MC transport, which becomes more influenced by annual and semiannual variations associated with the BMC. Key Points The model experiment reproduces the observed trendsA weakening of the ACC leads to a weakening of the MC and a southward BMC drift ©2014. American Geophysical Union. All Rights Reserved. |
URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84921841741&doi=10.1002%2f2014GL062523&partnerID=40&md5=f97182f4a10d860d691edaf0b3589a95
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Citation statistics: |
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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/6722
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Appears in Collections: | 气候减缓与适应
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作者单位: | College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR, United States
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Recommended Citation: |
Combes V.,Matano R.P.. Trends in the Brazil/Malvinas Confluence region[J]. Geophysical Research Letters,2014-01-01,41(24).
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