The Observed North Atlantic Meridional Overturning Circulation: Its Meridional Coherence and Ocean Bottom Pressure
The Observed North Atlantic Meridional Overturning Circulation: Its Meridional Coherence and Ocean Bottom Pressure
复制标题
观测到的北大西洋经向翻转环流：其经向相干性和海底压力
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
J. Willis
中科院分区：
文献类型：
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作者：
S. Elipot;E. Frajka‐Williams;C. Hughes;J. Willis
摘要：对 26°N 的快速气候变化-经向翻转环流 (RAPID MOC) 阵列和 41°N 的 Argo 浮标和测高数据的经向输送时间序列的分析表明，在半年和更长的时间尺度上，西边界的贡献主导了北大西洋经向翻转环流 (MOC) 的变化，MOC 定义为海洋上部 1000 m 的输送。由于西边界贡献的变化与地转翻转相关，因此它反映在三个标称纬度（26°、39°和42.5°N）西边界大陆坡上相对于及低于1000 m的海底压力（OBP）梯度的独立输运估计中。相对于及低于 1000 m 的西经向输运时间序列源自 OBP 梯度，或者等效地源自输运切变剖面，在 26° 和 39°–42.5°N 之间表现出与西经约相同的相位关系。
AbstractAnalyses of meridional transport time series from the Rapid Climate Change–Meridional Overturning Circulation (RAPID MOC) array at 26°N and from Argo float and altimetry data at 41°N reveal that, at semiannual and longer time scales, the contribution from the western boundary dominates the variability of the North Atlantic meridional overturning circulation (MOC), defined as the transport in the upper 1000 m of the ocean. Because the variability of the western boundary contribution is associated with a geostrophic overturning, it is reflected in independent estimates of transports from gradient of ocean bottom pressure (OBP) relative to and below 1000 m on the continental slope of the western boundary at three nominal latitudes (26°, 39°, and 42.5°N). Time series of western meridional transports relative to and below 1000 m derived from the OBP gradient, or equivalently derived from the transport shear profile, exhibit approximately the same phase relationship between 26° and 39°–42.5°N as the wes...
影响因子：
5.2
作者：
Bingham, Rory J.;Hughes, Chris W.;Williams, Richard G.
通讯作者：
Williams, Richard G.