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

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: 2241601
• 负责人: Magdalena Andres
• 金额: $ 138.84万
• 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: 2023
• 资助国家: 美国
• 起止时间: 2023-03-15 至 2026-02-28
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2241601&HistoricalAwards=false
• 关键词: Oleander; Project; resolution; observations; dynamic

For nearly three decades, a commercial container vessel, CV Oleander, has served as a volunteer oceanographic observing ship during weekly round-trip voyages between Port Elizabeth, NJ and Hamilton, Bermuda. The vessel’s route crosses the Mid Atlantic Bight (MAB) shelf and slope as well as the Gulf Stream and Sargasso Sea – a diverse set of regions that bring together subpolar and tropical waters and critically influence ocean circulation, heat transport, biological productivity and the marine carbon cycle in the western North Atlantic. Measurements made from the ship include current velocity from Acoustic Doppler Current Profilers (ADCP) and temperature from expendable bathythermographs (XBTs) and thermosalinograph. The most recent vessel replacement, however, necessitated changes in the installations of the oceanographic instrumentation and subsequent reduction in data return from the ship-mounted ADCPs. This project is focused on resolving the instrument performance issues and returning the Oleander to routine return of oceanographic data. Observations of partial pressure of carbon-dioxide (pCO2) are also made in-line with the theromosalinograph and there is a continuous plankton recorder for sampling plankton.This project will bring the newest Oleander’s scientific sensors online, and to continue and enhance the in situ measurements made possible by this commercial vessel’s regular service along a single route. These measurements are essential for studies of ocean circulation, heat transport, biological productivity and the marine carbon cycle in the western North Atlantic. Interannual to decadal variability in the Gulf Stream system has both regional and basin-wide implications. Gulf Stream meandering impacts exchange processes with surrounding waters. In addition, climate models point to rapid change in the Atlantic Meridional Overturning Circulation (AMOC), whose warm limb is carried within the Gulf Stream, and suggest that AMOC variability also drives changes observed on the shelf and coast. To understand the underlying processes and to validate or refute the model-based hypotheses, there is a need for in situ multidecade records of the Gulf Stream and surrounding waters. The Oleander Line with its coverage of shelf, slope, Gulf Stream and Sargasso waters is well-suited to directly measure fluxes associated with the AMOC and to compare with AMOC estimates from other latitudes to examine meridional coherence. Increased understanding of the drivers of both the long-term changes and the event-scale processes on the shelf and slope off the Northeast US has implications for the phenology and health of the shelf ecosystems along the highly populated coast with commercially important fisheries.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.

近三十年来，商用集装箱船 CV Oleander 每周在新泽西州伊丽莎白港和百慕大汉密尔顿之间往返航行，充当志愿海洋观测船。斜坡以及墨西哥湾流和马尾藻海——这些不同的区域汇集了副极地和热带水域，对北大西洋西部的海洋环流、热传输、生物生产力和海洋碳循环产生了重大影响。该船包括来自声学多普勒海流剖面仪（ADCP）的海流速度以及来自消耗式深海温度计（XBT）和热盐计的温度。然而，最近的船舶更换需要改变海洋仪器的安装以及随后从船上返回的数据。该项目的重点是解决仪器性能问题并使夹竹桃恢复海洋学数据的分压观测。二氧化碳 (pCO2) 也与热盐仪一起生产，并且有一个用于浮游生物采样的连续浮游生物记录仪。该项目将把最新的 Oleander 科学传感器上线，并继续和增强由此实现的原位测量这些测量对于研究北大西洋西部的海洋环流、热传输、生物生产力和海洋碳循环至关重要。墨西哥湾流蜿蜒影响着与周围水域的交换过程，气候模型指出大西洋经向翻转环流（AMOC）的快速变化，其暖流是在墨西哥湾流内进行的。 AMOC 的变化也会导致在大陆架和海岸上观察到的变化。为了了解潜在的过程并验证或反驳基于模型的假设，需要对墨西哥湾流和周围水域进行数十年的现场记录。其覆盖陆架、斜坡、墨西哥湾流和马尾藻水域，非常适合直接测量与 AMOC 相关的通量，并与其他纬度的 AMOC 估计值进行比较，以检查经向一致性。美国东北部陆架和斜坡上的变化和事件规模过程对人口稠密的海岸和具有重要商业渔业的陆架生态系统的物候和健康产生影响。该奖项是 NSF 的法定使命，并已被通过使用基金会的智力优点和更广泛的影响审查标准进行评估，认为值得支持。

项目成果

A framework for multidisciplinary science observations from commercial ships

商船多学科科学观测框架

• DOI: 10.1093/icesjms/fsae011
• 发表时间: 2024-02-19
• 期刊: ICES Journal of Marine Science
• 影响因子: 3.3
• 作者: Alison M Macdonald;L. Hiron;Leah McRaven;Laura Stolp;Kerry Strom;Rebecca Hudak;Shawn R Smith;Julia Hummon;Magdalena Andres
• 通讯作者: Magdalena Andres