The Northwest Corner: Its Structure and Relation to the Subpolar Front

0221073 RossbyFunds被要求分析最近从大西洋西北角（NWC）收集的大量数据。PI将尽可能完整地表征该区域的结构。他将构建质量、动能和涡量预算，并将评估NWC的时空稳定性。他预计，当北大陆架释放势能时，流动结构会发生显著的时间依赖性，这些势能要么以环的形式积累，要么以俯冲涡流的形式积累。他将探讨气流离开北大陆架时变宽的两种解释——大西洋中脊结构的控制和次极锋纬向流与离开北大陆架的水经向再循环之间的竞争。PI表明，在亚极锋区观测到的两个锋面，通过向西的罗斯比波传播，反映了亚极锋水流经过的大西洋中脊的两个断裂带。可用的数据来自欧拉系泊、拉格朗日浮子、水文调查、声学多普勒电流剖面调查和卫星测高。将进行一些旋转台实验。

0221073 RossbyFunds are requested to analyze a large body of recently collected data from the Northwest Corner (NWC) of the Atlantic Ocean. The PI will characterize the structure of the region as completely as possible. He will construct mass, kinetic energy, and vorticity budgets, and will assess the spatial and temporal stability of the NWC. He anticipates that significant temporal dependence of the flow structure occurs as the NWC sheds potential energy, which accumulates either as rings or subducting eddies. He will explore two explanations for the broadening of the flow as it leaves the NWC - control by the Mid-Atlantic Ridge structure and competition between the zonal flow of the Subpolar Front and the meridional recirculation of waters leaving the NWC. The PI suggests that the two fronts observed within the Subpolar Frontal region reflect, through westward Rossby wave propagation, the two fracture zones of the Mid-Atlantic Ridge through which the Subpolar Front waters flow. Available data is from Eulerian moorings, Lagrangian floats, hydrographic surveys, acoustic Doppler current profiler surveys, and satellite altimetry. Some rotating table experiments will be performed.