Collaborative Research: Warm Water Pathways and Intergyre Exchange in the Northeastern North Atlantic

合作研究：北大西洋东北部的暖水通道和环流交换

• 批准号: 9531877
• 负责人: Amy Bower
• 金额: $ 114万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-07-01 至 2002-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9531877&HistoricalAwards=false
• 关键词: Collaborative; Research; Warm; Water; Pathways

9531877 Bower In this project, the PIs will study the North Atlantic Current, which transports subtropical water northeastward from the Gulf Stream, and the Poleward Eastern Boundary Current, which carries Mediterranean Outflow Water northward along the European continental slope. These two current systems are thought to be the two most likely sources of warm, salty water that is transformed into intermediate and deep water in the subpolar region. Specific objectives are to: 1) provide a quantitative description of the bifurcation of the North Atlantic Current east of the Mid-Atlantic Ridge; 2) assess the importance of meridional eddy fluxes, compared to large-scale advection, in the northward flux of heat and salt in the northeastern North Atlantic; and 3) establish the degree of continuity of the Poleward Eastern Boundary Current to the entrance to the Norwegian Sea and the fate of the Mediterranean Outflow Water carried by this current. To meet these objectives, a total of 68 isopycnal, acoustically-tracked RAFOS floats will be deployed in the eastern Basin of the North Atlantic, forty in and adjacent to the North Atlantic Current, and twenty-eight near the eastern boundary. The floats will drift submerged for two years, sampling three cooling seasons, with tracking provided once daily using moored sound sources. This study is a contribution to the US Atlantic Circulation and Climate Experiment (ACCE), and to the International World Ocean Circulation Experiment (WOCE). The high-resolution RAFOS floats will specifically address important features of the circulation that have relatively short time and/or spatial scales, such as bifurcations, eddy mixing and boundary flows.

9531877 Bower 在这个项目中，PI将研究北大西洋洋流， 从墨西哥湾流向东北输送亚热带水， 携带地中海外流水的极向东边界流 沿着欧洲大陆坡向北。 这两个现行制度是 被认为是两个最有可能的温暖咸水来源，即 在副极地地区转化为中层和深层水。 具体 目的是：1）提供分叉的定量描述 北大西洋洋流在大西洋中脊以东; 2）评估 与大尺度平流相比，纬向涡动通量在 北大西洋东北部向北的热量和盐分通量;以及3） 建立向极东边界流的连续性程度， 挪威海的入口和地中海外流的命运 水流携带的水 为了实现这些目标，总共安装了68个等密度、声学跟踪的RAFOS 浮标将部署在北大西洋东部盆地，40英寸， 与北大西洋洋流相邻，东部附近有28个 边界这些漂浮物将在水下漂流两年， 冷却季节，每天使用系泊声源提供一次跟踪。 这项研究是对美国大西洋环流和气候的贡献 国际海洋环流实验（ACCE）和国际世界海洋环流实验 （WOCE）。高分辨率的RAFOS浮标将专门解决重要的 具有相对短的时间和/或空间的环流特征 尺度，如分叉，涡流混合和边界流。