Components of Upper-Ocean Salt Transport by the Gyres and the Meridional Overturning Circulation
Components of Upper-Ocean Salt Transport by the Gyres and the Meridional Overturning Circulation
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环流和经向翻转环流造成的上层海洋盐输送的组成部分
DOI：
10.1175/jpo-d-18-0005.1
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发表时间：
2018
影响因子：
3.5
通讯作者：
Cessi, Paola
中科院分区：
文献类型：
--
作者：
Jones, C. S.;Cessi, Paola
在理想几何原始方程海洋模型中研究了风驱动环流和经向翻转环流（MOC）引起的盐输送。两块沿着子午线延伸的狭窄大陆将模型域划分为两个宽度不同的盆地，通过南纬 52.5° 以南的折返水道连接。其中一块大陆（代表美洲）比另一块大陆（代表欧洲/非洲）更长。该模型使用两种不同的配置：“标准”配置，其中短大陆位于宽盆地以西；“交换”配置，其中短大陆位于窄盆地以西。在这两种情况下，短大陆以西的盆地中都会形成深水。 MOC 上部分支的大部分残余运输通过沿着开放的流线流动进入该盆地，这些流线在向北前进之前先经过短大陆的南部向西。下沉盆地上层海洋经向盐输送分解为两部分：沿开放流线输送和沿封闭流线（环流）输送。在形成深水的盆地北半球，标准配置下沿开放流线单位宽度向北的盐输送总量大于交换配置。这种较大的盐输送是由两个因素引起的：跨流域输送导致盐的较大向北平流和副极地环流的较大跨流线盐输送。结论是，非洲南部流域间流量的增加可能会将更多的盐带入大西洋。
The salt transport by the wind-driven gyres and the meridional overturning circulation (MOC) is studied in an idealized-geometry primitive equation ocean model. Two narrow continents, running along meridians, divide the model domain into two basins of different widths connected by a re-entrant channel south of 52.5°S. One of the continents, representing the Americas, is longer than the other, representing Europe/Africa. Two different configurations of the model are used: the “standard” one, in which the short continent is west of the wide basin, and the “exchanged” one, in which the short continent is west of the narrow basin. In both cases, deep water is formed in the basin to the west of the short continent. Most residual transport of the MOC’s upper branch enters this basin by flowing along open streamlines that pass westward south of the short continent before proceeding northward. The meridional salt transport in the upper ocean of the sinking basin is decomposed into two portions: transport along open streamlines and transport by closed streamlines (gyres). In the Northern Hemisphere of the basin in which deep water is formed, the total northward salt transport per unit width along open streamlines is larger in the standard configuration than in the exchanged configuration. This larger salt transport is caused by two factors: a larger northward advection of salt by the interbasin transport and a larger cross-streamline salt transport out of the subpolar gyre. It is concluded that increasing interbasin flow south of Africa would likely bring more salt into the Atlantic Ocean.
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大西洋和太平洋上千米的温度、盐度和密度差异
DOI：
--
发表时间：
1961
期刊：
影响因子：
--
作者：
J. Reid
通讯作者：
J. Reid
影响因子：
3.2
作者：
R. Ferrari;S. Griffies;A. Nurser;G. Vallis
通讯作者：
G. Vallis
大小很重要：大西洋比太平洋更咸的另一个原因
影响因子：
3.5
作者：
Jones, C. S.;Cessi, Paola
通讯作者：
Cessi, Paola
准绝热翻转环流的多态性和低频变化
DOI：
--
发表时间：
2015
期刊：
影响因子：
--
作者：
C. Wolfe;P. Cessi
通讯作者：
P. Cessi
影响因子：
5.2
作者：
E. van Sebille;A. Biastoch;P. V. van Leeuwen;W. D. de Ruijter
通讯作者：
E. van Sebille;A. Biastoch;P. V. van Leeuwen;W. D. de Ruijter