A New Index for the Atlantic Meridional Overturning Circulation at 26°N
A New Index for the Atlantic Meridional Overturning Circulation at 26°N
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北纬 26° 大西洋经向翻转环流的新指数
DOI：
10.1175/jcli-d-13-00052.1
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发表时间：
2014
影响因子：
3.5
通讯作者：
M. Mizielinski
中科院分区：
文献类型：
--
作者：
A. Duchez;J. Hirschi;S. Cunningham;A. Blaker;H. Bryden;B. Cuevas;C. P. Atkinson;G. McCarthy;E. Frajka‐Williams;D. Rayner;D. Smeed;M. Mizielinski
大西洋纬向翻转环流（AMOC）由于其在全球气候系统中的重要作用而受到广泛关注。快速气候变化（RAPID）阵列对26°N处AMOC强度的观测提供了对AMOC状态的最佳当前估计。RAPID AMOC可用的2004-11年期间太短，无法评估AMOC的年代际变化。本模拟研究在26°N引入了一个新的AMOC指数（称为AMOCSV），该指数结合了佛罗里达海峡输送、Ekman输送和向南的地转Sverdrup输送。在这项研究中的主要假设是，使用RAPID阵列计算的上millennian地转运输也是风驱动的，可以近似的地转Sverdrup运输在年际和更长的时间尺度。预计该指数将反映年际至十年时间尺度上AMOC的变化。只要有可靠的观测数据，就可以构造出这种表面分支的估计。
AbstractThe Atlantic meridional overturning circulation (AMOC) has received considerable attention, motivated by its major role in the global climate system. Observations of AMOC strength at 26°N made by the Rapid Climate Change (RAPID) array provide the best current estimate of the state of the AMOC. The period 2004–11 when RAPID AMOC is available is too short to assess decadal variability of the AMOC. This modeling study introduces a new AMOC index (called AMOCSV) at 26°N that combines the Florida Straits transport, the Ekman transport, and the southward geostrophic Sverdrup transport. The main hypothesis in this study is that the upper midocean geostrophic transport calculated using the RAPID array is also wind-driven and can be approximated by the geostrophic Sverdrup transport at interannual and longer time scales. This index is expected to reflect variations in the AMOC at interannual to decadal time scales. This estimate of the surface branch of the AMOC can be constructed as long as reliable measu...
影响因子：
3.2
作者：
Blaker, Adam T.;Hirschi, Joel J-M.;Madec, Gurvan
通讯作者：
Madec, Gurvan