The North Atlantic Subpolar Gyre in Four High-Resolution Models
The North Atlantic Subpolar Gyre in Four High-Resolution Models
复制标题
四种高分辨率模型中的北大西洋副极地环流
DOI：
10.1175/jpo2720.1
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发表时间：
2005
影响因子：
3.5
通讯作者：
C. Böning
中科院分区：
文献类型：
--
作者：
A. Treguier;S. Theetten;E. Chassignet;T. Penduff;Richard Smith;L. Talley;J. Beismann;C. Böning
作者首次对北大西洋副极地环流的新速度数据集和高分辨率模式[1U10°平行海洋计划模式（POPNA 10）、迈阿密等密度坐标海洋模式（MICOM）、1U6°大西洋模式（ATL 6）和链接大西洋模式实验系列（FLAME）]进行了定量比较。在海面上，模式的速度与世界海洋环流实验（WOCE）漂流数据基本吻合。两个值得注意的例外是模型中东格陵兰沿岸流的薄弱和表层存在一个强大的西南东雷克雅未克海脊流。在深海，环流最显著的特征是沿大陆坡流动的边界流。在这个狭窄的流程中，发现网格化的浮动数据集不能用于与模型进行定量比较。模式有非常不同的模式的深对流，有人建议，这可能与他们的正压输送在告别角的差异。模型显示了一个大的漂移水团属性与拉布拉多海水的盐碱化。作者认为，由于不同强迫和垂直混合模式都存在着相同的盐渍化问题，因此主要原因与盐分的水平运移有关。一个显着的特点，模型的解决方案是大向西输送Reykjanes海岭[10 Sv（Sv 10 6米3秒1）或更多]。
The authors present the first quantitative comparison between new velocity datasets and high-resolution models in the North Atlantic subpolar gyre [1U10° Parallel Ocean Program model (POPNA10), Miami Isopycnic Coordinate Ocean Model (MICOM), 1U6° Atlantic model (ATL6), and Family of Linked Atlantic Ocean Model Experiments (FLAME)]. At the surface, the model velocities agree generally well with World Ocean Circulation Experiment (WOCE) drifter data. Two noticeable exceptions are the weakness of the East Greenland coastal current in models and the presence in the surface layers of a strong southwestward East Reykjanes Ridge Current. At depths, the most prominent feature of the circulation is the boundary current following the continental slope. In this narrow flow, it is found that gridded float datasets cannot be used for a quantitative comparison with models. The models have very different patterns of deep convection, and it is suggested that this could be related to the differences in their barotropic transport at Cape Farewell. Models show a large drift in watermass properties with a salinization of the Labrador Sea Water. The authors believe that the main cause is related to horizontal transports of salt because models with different forcing and vertical mixing share the same salinization problem. A remarkable feature of the model solutions is the large westward transport over Reykjanes Ridge [10 Sv (Sv 10 6 m 3 s 1 ) or more].