| DOI: | 10.1002/2015GL066658
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| 论文题名: | The thermodynamic balance of the Weddell Gyre |
| 作者: | Naveira Garabato A.C.; Zika J.D.; Jullion L.; Brown P.J.; Holland P.R.; Meredith M.P.; Bacon S.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9508
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| EISSN: | 1944-9239
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| 出版年: | 2016
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| 卷: | 43, 期:1 | | 起始页码: | 317
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| 结束页码: | 325
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| 语种: | 英语
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| 英文关键词: | thermodynamics
; Weddell Gyre
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| Scopus关键词: | Cytology
; Oceanography
; Sea ice
; Thermodynamics
; Antarctic Bottom Water
; Salinity change
; Sea ice melting
; Sea ice production
; Thermodynamic balance
; Upper ocean water
; Water mass transformation
; Weddell Gyre
; Cells
; Antarctic Bottom Water
; buoyancy
; circumpolar current
; cooling
; gyre
; meteoric water
; overturn
; salinity
; sea ice
; thermodynamics
; transformation
; Southern Ocean
; Weddell Sea
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| 英文摘要: | The thermodynamic balance of the Weddell Gyre is assessed from an inverse estimate of the circulation across the gyre's rim. The gyre experiences a weak net buoyancy gain that arises from a leading-order cancelation between two opposing contributions, linked to two cells of water mass transformation and diapycnal overturning. The lower cell involves a cooling-driven densification of 8.4 ± 2.0 Sv of Circumpolar Deep Water and Antarctic Bottom Water near the gyre's southern and western margins. The upper cell entails a freshening-driven conversion of 4.9 ± 2.0 Sv of Circumpolar Deep Water into lighter upper ocean waters within the gyre interior. The distinct role of salinity between the two cells stems from opposing salinity changes induced by sea ice production, meteoric sources, and admixture of fresh upper ocean waters in the lower cell, which contrasts with coherent reductions in salinity associated with sea ice melting and meteoric sources in the upper cell. © 2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84957727624&doi=10.1002%2f2015GL066658&partnerID=40&md5=699f46c5c04d41ae32e2f2c9e9d665a8
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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/10471
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | National Oceanography Centre, University of Southampton, Southampton, United Kingdom
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| Recommended Citation: | |
Naveira Garabato A.C.,Zika J.D.,Jullion L.,et al. The thermodynamic balance of the Weddell Gyre[J]. Geophysical Research Letters,2016-01-01,43(1).
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