The upper, deep, abyssal and overturning circulation in the Atlantic Ocean at 30°S in 2003 and 2011
The upper, deep, abyssal and overturning circulation in the Atlantic Ocean at 30°S in 2003 and 2011
复制标题
2003年和2011年南纬30°大西洋上层、深层、深海和翻转环流
DOI:
10.1016/j.pocean.2019.102136
复制
发表时间:
2019
影响因子:
4.1
通讯作者:
Hernández-Guerra A
中科院分区:
文献类型:
--
作者:
Hernández-Guerra A
Mass transports for the thermocline, intermediate, deep and abyssal layers in the Atlantic Ocean, at 30°S and for 2003 and 2011, have been estimated using data from GO-SHIP hydrographic transoceanic sections and applying three inverse models with different constraints. The uppermost layers comprise South Atlantic Central Water (SACW) and Antarctic Intermediate Water (AAIW), with a net northward transport in the range of 12.1–14.7 Sv in 2003 and 11.7–17.7 Sv in 2011, which can be considered as the northward returning limb of the Meridional Overturning Circulation (MOC). The western boundary Brazil Current transports twice as much SACW in 2003 (−20.2 ± 0.7 Sv) than in 2011 (−9.7 ± 0.7 Sv). A poleward current consisting of AAIW and Upper Circumpolar Deep Water (UCDW) flows beneath the Brazil Current. The eastern boundary Benguela Current, characterized by a high mesoscale eddy activity, transports 15.6 ± 0.9 Sv in 2003 and 11.2 ± 0.8 Sv in 2011, east of the Walvis Ridge. In the ocean interior, the northward flow is mainly located east of the Mid Atlantic Ridge (MAR) where Agulhas Rings (ARs), observed in both 2003 and 2011, transport warm and salty water from the Indian to the Atlantic Ocean. For the deep layers, the southward transport of North Atlantic Deep Water (NADW) occurs as the Deep Western Boundary Current and also in the eastern basin. The western and eastern basins transport similar amounts of NADW to the south during both years, although the eastern pathway changes substantially between both years. The total NADW transport, which is also considered the MOC, is in the range 16.3–24.5 Sv in 2003 and 17.1–29.6 Sv in 2011, hence with no significant change.
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DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
A. Hernández‐Guerra;E. Fraile‐Nuez;F. López;A. Martínez;G. Parrilla;P. Vélez‐Belchí
通讯作者:
P. Vélez‐Belchí
影响因子:
4.1
作者:
G. Nelson;L. Hutchings
通讯作者:
L. Hutchings
DOI:
--
发表时间:
1995
期刊:
影响因子:
--
作者:
T. Suga;L. Talley
通讯作者:
L. Talley
DOI:
--
发表时间:
1985
期刊:
影响因子:
--
作者:
D. Roemmich;C. Wunsch
通讯作者:
C. Wunsch
影响因子:
0.5
作者:
K. Heywood;B. King
通讯作者:
B. King