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，一艘商业容器船CV夹夹一直在伊丽莎白港（Elizabeth），新泽西州和百慕大汉密尔顿（Hamilton）之间的每周往返航行中一直担任志愿海洋学观察船。该船的路线穿过大西洋中部的湾（MAB）架子和坡度，以及海湾溪流和萨尔加索海 - 一组潜水区，它们将亚极和热带水域融合在一起，并严重影响海洋循环，热运输，生物生产力，生物生产力以及北大西洋西部的海洋碳循环。该船进行的测量包括来自声学多普勒电流探查器（ADCP）的当前速度和可消耗性的浴室热量仪（XBT）和热模板仪的温度。然而，最新的船只更换在海洋学仪器的安装以及随后从船舶安装的ADCP中返回的数据返回的必要变化。该项目的重点是解决仪器性能问题，并将夹夹返回到海洋数据的常规回归。二氧化碳（PCO2）的部分压力的观察也与热模仪之间进行了同行，并且有一个连续的浮游生物记录仪，用于采样浮游物。此项目将使最新的夹夹的科学传感器在线上，并继续并增强此商业船只正常服务的现场测量，并可以通过单路线进行正常服务。这些测量对于研究北大西洋西部的海洋循环，热运输，生物生产力和海洋碳循环至关重要。墨西哥湾流系统中的年际变化与衰老变异性具有区域和盆地范围的影响。海湾流蜿蜒影响周围水域的交换过程。此外，气候模型指出了大西洋子午倾覆（AMOC）的快速变化，其温暖的肢体在墨西哥湾流中载有温暖的肢体，并表明AMOC的可变性也使在货架和海岸上观察到的变化变化。为了了解基本过程并验证或反驳基于模型的假设，需要对海湾流和周围水的原位多年记录。夹夹线及其架子，坡度，墨西哥湾流和萨尔加索水域的覆盖范围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，从其他纬度到检查子午线相干性。对货架上的长期变化和事件尺度过程的驱动因素的越来越多，对美国东北部的斜坡上的斜坡具有影响，这对人口稠密的海岸的货架生态系统的物候和健康具有商业上重要的渔业。这项奖项反映了NSF的法定任务，并通过评估了基金会的范围，并通过评估了基金会的范围，并通过评估了支持。

项目成果

A framework for multidisciplinary science observations from commercial ships

• DOI: 10.1093/icesjms/fsae011
• 发表时间: 2024-02
• 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