Collaborative Research: North Atlantic Dynamics - Developing and Exploiting a Long-Term Cape Hatteras Gulf Stream Time Series

合作研究：北大西洋动力学 - 开发和利用长期哈特拉斯角湾流时间序列

• 批准号: 2123111
• 负责人: Magdalena Andres
• 金额: $ 49.61万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-10-01 至 2024-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2123111&HistoricalAwards=false
• 关键词: Collaborative; Research; North; Atlantic; Dynamics

This project will use a number of existing data sources from the ocean and from the atmosphere to determine variations of the Gulf Stream near Cape Hatteras from 2004 to the present time. The Gulf Stream variations to be studied range in periodicity from a day or two to interannual. Possible causes of these variations will be determined utilizing measurements from the ocean and the atmosphere. This characterization of the Gulf Stream will provide a description of how the Gulf Stream affects and is affected by ocean and atmospheric circulations in the North Atlantic. The project will explore potential influences from climate variability as well as explore the feasibility of harnessing energy from the Gulf Stream off Cape Hatteras. The project will support one post-doctoral scholar, two graduate students and one undergraduate student in the pursuit of various project objectives. The study will investigate the nature and causes of variability of the Gulf Stream near Cape Hatteras and explore how the Gulf Stream affects and is affected by oceanic and atmospheric processes in the North Atlantic. This will be done by reprocessing and analyzing HF radar surface current measurements and comparing these findings with ancillary data to test hypotheses about controls on and consequences of Gulf Stream variability. Analyses will consist of examining the position, path, structure, and location of separation of the Gulf Stream at temporal scales ranging from event-scale to interannual. The HF radar data will be compared to (i) in-situ and altimetry data, (ii) Oleander data, (iii) data from Line W of the Deep Western Boundary Current, (iv) data from the RAPID line, (v) cable data of transport at Florida Strait, and (vi) counts and trajectories of cold and warm core rings. Gulf Stream properties will also be compared to atmospheric forcing variability such as the NAO index, Jet Stream position, local wind stress, and basin-scale wind-stress curl. The project will derive Gulf Stream characteristics from observations collected since 2004 and result in a database updated in near real-time. Measurements with HF radar will continue after this project expires. Also, the project will provide information about the feasibility of harnessing energy from the Gulf Stream. The project will support one post-doctoral scholar, 2 graduate students and 1 undergraduate student.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该项目将使用来自海洋和大气的大量现有数据源来确定 2004 年至今哈特拉斯角附近湾流的变化。要研究的墨西哥湾流变化的周期性范围从一两天到年际。这些变化的可能原因将利用海洋和大气的测量来确定。湾流的这一特征将描述湾流如何影响北大西洋的海洋和大气环流以及如何受北大西洋海洋和大气环流的影响。 该项目将探索气候变化的潜在影响，并探索利用哈特拉斯角墨西哥湾流能源的可行性。该项目将支持一名博士后学者、两名研究生和一名本科生实现各种项目目标。 该研究将调查哈特拉斯角附近墨西哥湾流变化的性质和原因，并探讨墨西哥湾流如何影响北大西洋的海洋和大气过程以及如何受其影响。这将通过重新处理和分析高频雷达表面电流测量结果并将这些发现与辅助数据进行比较来测试有关湾流变化的控制和后果的假设来完成。分析将包括在从事件尺度到年际尺度的时间尺度上检查墨西哥湾流分离的位置、路径、结构和位置。高频雷达数据将与 (i) 现场和测高数据、(ii) Oleander 数据、(iii) 来自深西边界流 W 线的数据、(iv) 来自 RAPID 线的数据、(v) 进行比较佛罗里达海峡传输的电缆数据，以及 (vi) 冷核环和暖核环的计数和轨迹。湾流特性还将与大气强迫变化进行比较，例如 NAO 指数、急流位置、局部风应力和盆地规模风应力旋度。该项目将从 2004 年以来收集的观测数据中得出墨西哥湾流特征，并生成近乎实时更新的数据库。该项目结束后，将继续使用高频雷达进行测量。此外，该项目还将提供有关利用墨西哥湾流能源的可行性的信息。该项目将支持一名博士后学者、两名研究生和一名本科生。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，认为值得支持。