Advective Time Scales of Agulhas Leakage to the North Atlantic in Surface Drifter Observations and the 3D OFES Model

Advective Time Scales of Agulhas Leakage to the North Atlantic in Surface Drifter Observations and the 3D OFES Model
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表面漂流者观测中阿古拉斯泄漏到北大西洋的平流时间尺度和 3D OFES 模型

DOI:
10.1175/2010jpo4602.1
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发表时间:
2011
影响因子:
3.5
通讯作者:
W. Johns
W. Johns
中科院分区:
地球科学2区
文献类型:
--
作者:
E. Sebille;L. Beal;W. Johns

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北大西洋温盐异常从Agulas区到深对流区的平流传输时间是气候中的一个重要时间尺度,因为它与大西洋经向翻转环流的变化有关。研究这种过境时间尺度是困难的,因为大多数观测和高分辨率模式数据太短,无法评估十年至百年时间尺度上的全球环流。在这里,结果是通过蒙特卡罗模拟获得数千条任意长度的“超轨道”的技术得出的。这些超轨迹允许基于拉格朗日数据分析环流模式和时间尺度:在这种情况下,来自全球漂移计划的观测地表漂移轨迹和来自地球模拟器(OFES)的高分辨率OGCM的拉格朗日数据。观测超轨道只能用来研究二维表面流动,而观测超轨道只能用来研究二维表面流动。
AbstractThe advective transit time of temperature–salinity anomalies from the Agulhas region to the regions of deep convection in the North Atlantic Ocean is an important time scale in climate, because it has been linked to variability in the Atlantic meridional overturning circulation. Studying this transit time scale is difficult, because most observational and high-resolution model data are too short for assessment of the global circulation on decadal to centennial time scales. Here, results are presented from a technique to obtain thousands of “supertrajectories” of any required length using a Monte Carlo simulation. These supertrajectories allow analysis of the circulation patterns and time scales based on Lagrangian data: in this case, observational surface drifter trajectories from the Global Drifter Program and Lagrangian data from the high-resolution OGCM for the Earth Simulator (OFES). The observational supertrajectories can only be used to study the two-dimensional (2D) surface flow, whereas th...
DOI: 10.1038/nature08519
发表时间: 2009-11-26
期刊: NATURE
影响因子: 64.8
作者:
Biastoch, A.;Boening, C. W.;Lutjeharms, J. R. E.
通讯作者: Lutjeharms, J. R. E.
使用漂流浮标对数值漂流者轨迹进行拉格朗日验证:在 Agulhas 系统中的应用
DOI: 10.1016/j.ocemod.2009.05.005
发表时间: 2009
期刊: Ocean Modelling
影响因子: 3.2
作者:
Van Sebille;P. J. van Leeuwen;A. Biastoch;C. N. Barron;W. P. M. de Ruijter
通讯作者: W. P. M. de Ruijter