Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL087014 |
Interannual Variability of the Outflow of Weddell Sea Bottom Water | |
Gordon, Arnold L.1; Huber, Bruce A.1; Abrahamsen, E. Povl2 | |
2020-02-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2020 |
卷号 | 47期号:4 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; England |
英文摘要 | The Weddell Sea Bottom Water (WSBW) export from 1999 to 2019 displays distinct seasonal and interannual variability. From 2014 into 2017 a marked salinity decrease was recorded, with the lowest salinity, 34.615, attained in early 2016. The reduced salinity is derived from the V-shaped trough formed by a double front along the shelf break of the Weddell Gyre's western boundary, which is filled with a blend of surface water and modified Weddell Deep Water. We estimate that when the V-shaped apex attains a depth of greater than similar to 700 m, the thermobaric effect promotes its descent into the WSBW. We propose that this occurred during anomalously strong cyclonic wind stress curl over the Weddell Gyre from 2014 into 2017, which increased the intensity of the gyre and its western boundary current, deepening the V-shape trough. The WSBW salinity increased to its prior to 2014 values as the wind stress relaxed in 2018. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000529120100090 |
WOS关键词 | SOUTHERN-OCEAN ; DEEP ; CIRCULATION ; EXPORT ; ATLANTIC ; POLYNYA ; RISE ; GYRE |
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/279730 |
专题 | 气候变化 |
作者单位 | 1.Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY 10964 USA; 2.British Antarctic Survey, Nat Environm Res Council, Cambridge, England |
推荐引用方式 GB/T 7714 | Gordon, Arnold L.,Huber, Bruce A.,Abrahamsen, E. Povl. Interannual Variability of the Outflow of Weddell Sea Bottom Water[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(4). |
APA | Gordon, Arnold L.,Huber, Bruce A.,&Abrahamsen, E. Povl.(2020).Interannual Variability of the Outflow of Weddell Sea Bottom Water.GEOPHYSICAL RESEARCH LETTERS,47(4). |
MLA | Gordon, Arnold L.,et al."Interannual Variability of the Outflow of Weddell Sea Bottom Water".GEOPHYSICAL RESEARCH LETTERS 47.4(2020). |
条目包含的文件 | 条目无相关文件。 |
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