论文标题
海上Zonal喷气机的子午繁殖
Meridional Propagation of Zonal Jets in Ocean Gyres
论文作者
论文摘要
对高度数据和原位测量值的分析揭示了许多世界海洋盆地的子午线，几乎是区域，连贯的喷气样结构的模式。在这种情况下，解决此类Zonal Jet样特征的最近的海洋通用循环模型（OGCM）模拟表明它们也在很大程度上沿着子午方向传播。为了研究这种传播，这一特征引起了很少的关注，我们考虑了这种喷气机在封闭的中纬度盆地上的两层准地藻模型中的行为，并受到双埃雷风力强迫的强迫。在此设置中，我们发现喷气机在瞬时磁场的斜压模式下很明显，它们在很大程度上朝着子午方向传播，并且传播与对流机制有关。
Analyses of both altimetric data and in-situ measurements reveal patterns of meridionally-alternating, nearly zonal, coherent jet-like structures in many of the world ocean basins. In this context, recent Ocean General Circulation Model (OGCM) simulations that resolve such zonal jet-like features show that they also propagate, largely in the meridional direction. To investigate such propagation, a feature that has received scant attention, we consider the behavior of such jets in a two-layer quasi-geostrophic model on a closed mid-latitude basin and forced by a double-gyre wind forcing. In this setup, we find that jets are evident in the baroclinic mode of instantaneous fields, that they propagate largely in the meridional direction, and that the propagation is related to an advective mechanism.
