Dynamics of the Arctic Ocean Boundary Current: A Numerical Modeling Study of Key Locations

北冰洋边界流（AOBC）是一个相对狭窄的流，主要沿着北冰洋大部分地区的上陆坡流动，是水的性质（如热、盐、污染物和示踪剂）分布在北极周边并输送到深盆地中间深度的主要通道。 AOBC起源于格陵兰-挪威海，那里相对温暖的大西洋沃茨通过两个分支流入北极，一个通过弗拉姆海峡，另一个穿过巴伦支海。 沿着，AOBC会遇到水深复杂的区域，在那里水流被改变、改变方向并部分混合到深水盆地中。提供资金调查AOBC在三个关键地点的基本动态：圣安娜槽，罗蒙诺索夫海岭，门捷列夫海岭/楚科奇边界。 将在理想化和现实配置中使用高分辨率、三维、原始方程数值模型，以了解AOBC根据水深测量进行调整的细节。 现有的观测结果将用于提供真实的流入条件，并与数值结果进行比较。 对这些关键地点的动力学了解甚少，大规模的泛北极模式也不能解决它们的细节，因此进行这样一个区域过程研究的时机已经成熟

The Arctic Ocean Boundary Current (AOBC) is a relatively narrow current that flows mainly along the upper continental slope around much of the Arctic Ocean, serving as the major pathway by which water properties, such as heat, salt, contaminants, and tracers are distributed around the Arctic perimeter and delivered to the intermediate depths of the deep basins. The AOBC originates in the Greenland-Norwegian Sea, where relatively warm Atlantic waters flow into the Arctic via two branches, one through Fram Strait and one across the Barents Sea. Along its path, the AOBC encounters regions of complex bathymetry, where the current is altered, redirected and partially mixed into the deep basins. Funds are provided to investigate the fundamental dynamics of the AOBC at three key locations: St. Anna Trough, the Lomonosov Ridge, and the Mendeleyev Ridge/Chukchi Borderland. A high-resolution, three-dimensional, primitive-equation, numerical model will be used in both idealized and realistic configurations to understand the details of the adjustment of the AOBC to the bathymetry. Existing observations will be used both to provide realistic inflow conditions and to compare with the numerical results. The dynamics of these key locations are poorly understood, and large-scale pan-Arctic models do not resolve their details, so the time is ripe for such a regional process study