Collaborative Research: The Oleander project: High-resolution observations of the dynamic ocean between New Jersey and Bermuda

合作研究：夹竹桃项目：新泽西州和百慕大之间动态海洋的高分辨率观测

• 批准号: 1536517
• 负责人: Ruth Curry
• 金额: $ 42.14万
• 依托单位: Bermuda Institute of Ocean Sciences (BIOS), Inc.
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-09-15 至 2021-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1536517&HistoricalAwards=false
• 关键词: Collaborative; Research; Oleander; project; resolution

This project will extend for five years and enhance the multi-decadal oceanographic observations from the MV Oleander, a container vessel that on a weekly schedule crosses four distinct regions, namely the continental shelf, Slope Sea, Gulf Stream and Sargasso Sea on its route between New Jersey and Bermuda. The enhancements include an acoustic Doppler current profiler (ADCP) pair that will provide direct measurement of the currents through the base of the thermocline to about 1200 m depth in the open ocean on the one hand, and high vertical resolution profiling of the upper ocean on the other. The former will enable research into the full upper ocean structure of the Gulf Stream, the mesoscale eddy field, and the highly variable Sargasso Sea, all of which are important components in the large scale ocean circulation including the climatically important meridional overturning circulation (MOC). The latter will greatly improve coverage on the continental shelf, shelfbreak front and resolution of the mixed layer seasonal thermocline structure.The Oleander track is uniquely situated as it enables in situ measurements across the shelf and slope, through the southernmost extension of the North Atlantic subpolar gyre, and into the subtropical gyre. The beauty of these ADCP snapshots is that they tell us what the ocean is doing over a wide range of scales. Ensemble averaging these leads to robust data sets that will contribute to continued and deeper investigations into (1) seasonal, and interannual to decadal variability on the mid-Atlantic Bight shelf, (2) dynamics controlling the communication between the shelf and open ocean, (3) connectivity along western boundaries in the MOC at different latitudes, and (4) interannual to decadal variability in the Gulf Stream position, strength and the structure of the subpolar gyre, and the recirculation in the Sargasso Sea. In addition, the high horizontal resolution of surface salinity, temperature and velocity afforded by individual tracks will enable continued investigation into sub-mesoscale processes. A replacement ship is expected to enter service in the second or third year of the project. With the installation of two new ADCPs on the new hull, one for improved shelf-slope operation and one to profile to 1200 m depths, the Oleander project will greatly increase its observational footprint in the northwest Atlantic. All data will be available to the public as soon as they are processed and quality-controlled. The expansion of the University of Hawaii UNOLS-wide ADCP data acquisition system, UHDAS to include volunteer observing ships will allow for real time data streams from not only the Oleander, but also other such ADCP-equipped vessels in operation in the North Atlantic.

该项目将延长五年，并增强MV夹夹的多年海洋学观察结果，MV夹夹是一个容器容器，该容器容器在每周的时间表中跨越四个不同的区域，即大陆架，坡海，墨西哥湾，墨西哥湾，墨西哥湾流和萨尔加索海在新泽西州和贝尔莫达之间的路线上。增强功能包括一个声学多普勒电流探测器（ADCP）对，一方面将通过热层层的底部直接测量电流，一方面可在开阔的海洋中达到约1200 m的深度，以及另一方面的高垂直分辨率分析。前者将研究墨西哥湾流，中尺度涡流和高度可变的Sargasso Sea的整个上海结构，所有这些都是大规模海洋循环中重要的组成部分，包括气候上重要的子午线翻转循环（MOC）。后者将极大地改善大陆架，货架上的前部以及混合层季节性热跃层结构的分辨率。夹层轨道的位置是独特的，因为它可以通过北大西洋亚极点的最南端延伸到架子和斜坡上，并进入了架子，并进入了亚热带的gyre。这些ADCP快照的美丽在于，他们告诉我们海洋在各种尺度上在做什么。 Ensemble averaging these leads to robust data sets that will contribute to continued and deeper investigations into (1) seasonal, and interannual to decadal variability on the mid-Atlantic Bight shelf, (2) dynamics controlling the communication between the shelf and open ocean, (3) connectivity along western boundaries in the MOC at different latitudes, and (4) interannual to decadal variability in the Gulf Stream position, strength and the structure of sargasso海中的下极和再循环。此外，单个轨道提供的表面盐度，温度和速度的高度水平分辨率将继续研究子尺度过程。预计将在该项目的第二年或第三年内替换船。随着在新船体上安装了两个新的ADCP，一个用于改进架子斜坡操作，一个用于1200 m的深度，夹骨项目将大大增加其在西北大西洋的观察足迹。所有数据都将在处理和质量控制后立即向公众使用。夏威夷大学UNOLS范围内ADCP数据采集系统的扩展，包括志愿者观察船只，将允许不仅从夹珠机，而且还可以实时数据流，而且还可以从北大西洋运行中的其他此类ADCP船只进行实时数据流。