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: 2123316
• 负责人: Harvey Seim
• 金额: $ 64.41万
• 依托单位: University of North Carolina at Chapel Hill
• 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=2123316&HistoricalAwards=false
• 关键词: Collaborative; Research; North; Atlantic; Dynamics; 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.

该项目将利用来自海洋和大气的许多现有数据源来确定2004年至今哈特拉斯角附近的海湾流的变化。从一两天到年届时，要研究的墨西哥湾流变化范围。通过海洋和大气的测量结果，将确定这些变化的可能原因。海湾流的这种特征将提供描述墨西哥湾流的影响并受到北大西洋海洋和大气循环的影响。 该项目将探索气候变异性的潜在影响，并探索利用哈特拉斯角（Cape Hatteras）墨西哥湾流的可行性。该项目将支持一位博士后学者，两名研究生和一名本科生，以追求各种项目目标。该研究将研究哈特拉斯角附近的墨西哥湾流的变异性的性质和原因，并探讨墨西哥湾流如何影响并受到北大西洋海洋和大气过程的影响和影响。这将通过重新处理和分析HF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以测试有关墨西哥湾流变异性的控制和后果的假设。分析将包括检查墨西哥湾流的位置，路径，结构和位置，从事件尺度到年际，时间尺度的时间尺度。将HF雷达数据与（i）原位和高度计数据，（ii）夹层数据，（iii）来自深西边界电流线的线的数据，（iv）快速线的数据，（v）佛罗里达州的传输的电缆数据，以及（vi）冷和热核环的计数和轨迹。海湾流的特性也将与大气强迫变异性（例如NAO指数，喷射流位置，局部风应力和盆地规模的风压力卷曲）进行比较。该项目将从2004年以来收集的观测值来得出海湾流的特征，并导致数据库几乎实时更新。该项目到期后，使用HF雷达的测量将继续进行。此外，该项目将提供有关从海湾流利用能量的可行性的信息。该项目将支持一名博士后学者，2名研究生和1名本科生。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识分子优点和更广泛的影响评估标准通过评估来支持的。