Collaborative Research: Enhancing our Understanding of North Atlantic Deep Water Pathways using Nonlinear Dynamics Techniques

合作研究:利用非线性动力学技术增强我们对北大西洋深水路径的理解

基本信息

  • 批准号:
    1851075
  • 负责人:
  • 金额:
    $ 34.52万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2019
  • 资助国家:
    美国
  • 起止时间:
    2019-07-15 至 2024-06-30
  • 项目状态:
    已结题

项目摘要

For most of the last century, the equatorward spread of cold water masses from high latitudes in the Labrador and Nordic Seas was expected to be largely contained along the Deep Western Boundary Current in the subpolar and subtropical North Atlantic. Since the turn of this century, observational floats launched within these water masses have defied this expectation. Instead, myriad interior pathways have been revealed across the North Atlantic. Contemporaneously, an inventory of anthropogenic carbon dioxide has shown the subpolar North Atlantic to be the most intense (per unit area) sink of all ocean basins, a characteristic attributable to the deep penetration of newly-formed water masses in that basin. While the deep limb of the Atlantic Meridional Overturning Circulation has long been appreciated as a heat and freshwater reservoir, its role as a carbon reservoir is now apparent. Thus, at a time when the conventional understanding of these deep water mass pathways has been upended, there is a stronger reason than ever to understand the spread and fate of these water masses. Over the past decade, simulated float trajectories have augmented the relatively small number of observational floats in the North Atlantic in order to gain a broader understanding of water mass pathways. However, analyses of the observed and modeled trajectories have largely used conventional methods to ascertain a limited number of flow characteristics. This study will capitalize on recent advances in nonlinear dynamics in order to provide a more comprehensive description and understanding of these water masses and flows limited observations. Thus, by using these tools to unravel deep water pathways, this project will aid our understanding of the North Atlantic as a deep carbon reservoir, and thereby have a significant societal impact. Broader impacts with this proposed work also include the training of a postdoctoral researcher to facilitate an independent research career and the training of a physical oceanography student in the use of nonlinear dynamical tools. This project will address a fundamental question in modern physical oceanography through the use of two complementary tools emerging at the interface of nonlinear dynamics and fluid dynamics. Probabilistic tools will be used to cast new light on the transformation and fate of the deep waters through the construction of Lagrangian geographies that constrain connectivity, residence times within water mass provinces, preferred circulation pathways, transit times along these pathways, and transport across province boundaries. Deterministic tools that have recently proven efficient at extracting persistent transport pathways will also be used to delineate preferred transport pathways, and thus will be used to frame deep water routes. This offers a promising fertilization of nonlinear dynamical tools into a traditional physical oceanographic area of study. Specifically, this work will apply dynamical systems tools to: 1) determine the long-term fate and elucidate the preferred pathways of the deep water masses; 2) ascertain the extent to which potential vorticity conservation or other dynamics constrains these pathways; and 3) identify spatial provinces (domains) that define water mass residence and evaluate exchanges among them. The small, but growing number of observational floats, including those recently recovered from the Overturning in the Subpolar North Atlantic Program (OSNAP), as well as Argo data and simulated float trajectories from ocean general circulation models, will be used in this analysis.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.
在上个世纪的大部分时间里,来自拉布拉多海和北欧海高纬度地区的冷水团向赤道扩散预计将在很大程度上被控制在副极地和副热带北大西洋的西深边界流沿岸。自本世纪之交以来,在这些水团中发射的观测浮标已经打破了这一预期。相反,北大西洋的无数内部通道已经被揭示出来。与此同时,人为二氧化碳清单显示,北大西洋副极地是所有海洋盆地中(每单位面积)最强烈的汇,这一特征归因于该盆地中新形成的水团的深层渗透。虽然大西洋经向翻转环流的深肢长期以来一直被认为是热量和淡水库,但它作为碳库的作用现在已经很明显了。因此,当对这些深水团路径的传统理解被颠覆时,我们比以往任何时候都更有理由了解这些水团的扩散和命运。在过去的十年中,模拟浮标轨迹增加了北大西洋相对较少数量的观测浮标,以便更广泛地了解水团路径。然而,对观测和建模轨迹的分析主要使用传统方法来确定有限数量的流动特性。这项研究将利用非线性动力学的最新进展,以便对这些水团和流量有限的观测结果提供更全面的描述和理解。因此,通过使用这些工具来解开深水通道,该项目将有助于我们了解北大西洋作为深层碳库的情况,从而产生重大的社会影响。这项拟议工作的更广泛影响还包括培训博士后研究员以促进独立研究生涯,以及培训物理海洋学学生使用非线性动力学工具。该项目将通过使用非线性动力学和流体动力学界面中出现的两种互补工具来解决现代物理海洋学中的一个基本问题。概率工具将用于通过构建拉格朗日地理来揭示深水的转变和命运,拉格朗日地理限制了连通性、水体省内的停留时间、首选循环路径、沿这些路径的运输时间以及跨省边界的运输。最近被证明可以有效提取持久运输路径的确定性工具也将用于描绘首选运输路径,从而用于构建深水路线。这为非线性动力学工具在传统物理海洋学研究领域的应用提供了一个有前景的机会。具体来说,这项工作将应用动力系统工具来:1)确定长期命运并阐明深水团的首选路径; 2) 确定位涡守恒或其他动力学对这些路径的限制程度; 3)确定定义水体居住的空间省(域)并评估它们之间的交换。这项分析将使用数量虽小但数量不断增加的观测浮标,包括最近从北大西洋副极地翻转计划 (OSNAP) 中回收的浮标,以及 Argo 数据和来自海洋环流模型的模拟浮标轨迹。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,被认为值得支持。

项目成果

期刊论文数量(1)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
The Surface Pathways of the South Atlantic: Revisiting the Cold and Warm Water Routes Using Observational Data
南大西洋的表面路径:利用观测数据重新审视冷水和暖水路线
{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ monograph.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ sciAawards.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ conferencePapers.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ patent.updateTime }}

Susan Lozier其他文献

Assessing variability in the size and strength of the North Atlantic subpolar gyre
评估北大西洋副极地环流的大小和强度的变化
  • DOI:
    10.1002/2017jc012798
  • 发表时间:
    2017-04-01
  • 期刊:
  • 影响因子:
    0
  • 作者:
    N. Foukal;Susan Lozier
  • 通讯作者:
    Susan Lozier
Export of Labrador Sea Water from the subpolar North Atlantic: A Lagrangian perspective
从北大西洋副极地输出拉布拉多海水:拉格朗日视角

Susan Lozier的其他文献

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

{{ truncateString('Susan Lozier', 18)}}的其他基金

FDSS Track 1: A New Paradigm for Faculty Development in Geospace Science at Georgia Tech
FDSS Track 1:佐治亚理工学院地球空间科学教师发展的新范式
  • 批准号:
    2347873
  • 财政年份:
    2024
  • 资助金额:
    $ 34.52万
  • 项目类别:
    Continuing Grant
Collaborative Research: Overturning in the Subpolar North Atlantic Program
合作研究:北大西洋次极地计划的颠覆
  • 批准号:
    1948335
  • 财政年份:
    2020
  • 资助金额:
    $ 34.52万
  • 项目类别:
    Continuing Grant
Collaborative Research: Overturning in the Subpolar North Atlantic-the Irminger and Iceland Basins
合作研究:北大西洋副极地-伊尔明格盆地和冰岛盆地的翻转
  • 批准号:
    2017523
  • 财政年份:
    2019
  • 资助金额:
    $ 34.52万
  • 项目类别:
    Continuing Grant
SAVI: Collaborative Research: Overturning in the Subpolar North Atlantic - Labrador Basin and Floats
SAVI:合作研究:北大西洋副极地的翻转 - 拉布拉多盆地和浮体
  • 批准号:
    2017520
  • 财政年份:
    2019
  • 资助金额:
    $ 34.52万
  • 项目类别:
    Continuing Grant
Collaborative Research: Overturning in the Subpolar North Atlantic-the Irminger and Iceland Basins
合作研究:北大西洋副极地-伊尔明格盆地和冰岛盆地的翻转
  • 批准号:
    2017523
  • 财政年份:
    2019
  • 资助金额:
    $ 34.52万
  • 项目类别:
    Continuing Grant
Collaborative Research: Overturning in the Subpolar North Atlantic - Labrador Basin and Floats
合作研究:北大西洋副极地的翻转——拉布拉多盆地和浮体
  • 批准号:
    2017522
  • 财政年份:
    2019
  • 资助金额:
    $ 34.52万
  • 项目类别:
    Continuing Grant
Collaborative Research: Leveraging the AMOC arrays and models to understand heat and freshwater transports in the North Atlantic
合作研究:利用 AMOC 阵列和模型了解北大西洋的热量和淡水输送
  • 批准号:
    1924456
  • 财政年份:
    2019
  • 资助金额:
    $ 34.52万
  • 项目类别:
    Standard Grant
Collaborative Research: Leveraging the AMOC arrays and models to understand heat and freshwater transports in the North Atlantic
合作研究:利用 AMOC 阵列和模型了解北大西洋的热量和淡水输送
  • 批准号:
    1924456
  • 财政年份:
    2019
  • 资助金额:
    $ 34.52万
  • 项目类别:
    Standard Grant
SAVI: Collaborative Research: Overturning in the Subpolar North Atlantic - Labrador Basin and Floats
SAVI:合作研究:北大西洋副极地的翻转 - 拉布拉多盆地和浮体
  • 批准号:
    2017520
  • 财政年份:
    2019
  • 资助金额:
    $ 34.52万
  • 项目类别:
    Continuing Grant
Collaborative Research: Overturning in the Subpolar North Atlantic - Labrador Basin and Floats
合作研究:北大西洋副极地的翻转——拉布拉多盆地和浮体
  • 批准号:
    2017522
  • 财政年份:
    2019
  • 资助金额:
    $ 34.52万
  • 项目类别:
    Continuing Grant

相似国自然基金

靶向VEGFR2增强放疗-免疫检查点抑制剂联合介导的远隔效应抑制肿瘤进展的机制研究
  • 批准号:
    82360580
  • 批准年份:
    2023
  • 资助金额:
    32 万元
  • 项目类别:
    地区科学基金项目
腺相关病毒载体介导的circ_12952基因治疗通过激活结直肠癌抗肿瘤免疫增强PD-1抗体疗效的机制研究及临床探索
  • 批准号:
    82303073
  • 批准年份:
    2023
  • 资助金额:
    30 万元
  • 项目类别:
    青年科学基金项目
多层级增强B4C/6082Al复合材料背压往复挤压-短时时效界面行为及服役性能提升机理研究
  • 批准号:
    52375329
  • 批准年份:
    2023
  • 资助金额:
    50 万元
  • 项目类别:
    面上项目
利用等离子增强型分子层沉积技术实现0.5mm弯折挠度半径的超柔性薄膜封装技术研究
  • 批准号:
    62374070
  • 批准年份:
    2023
  • 资助金额:
    48 万元
  • 项目类别:
    面上项目
肿瘤归巢纳米药物协同多位点多模态放疗重塑肝细胞癌多病灶抵抗性肿瘤微环境以增强远端效应的研究
  • 批准号:
    32301173
  • 批准年份:
    2023
  • 资助金额:
    30 万元
  • 项目类别:
    青年科学基金项目

相似海外基金

Collaborative Research: HNDS-I: NewsScribe - Extending and Enhancing the Media Cloud Searchable Global Online News Archive
合作研究:HNDS-I:NewsScribe - 扩展和增强媒体云可搜索全球在线新闻档案
  • 批准号:
    2341858
  • 财政年份:
    2024
  • 资助金额:
    $ 34.52万
  • 项目类别:
    Standard Grant
Collaborative Research: Frameworks: hpcGPT: Enhancing Computing Center User Support with HPC-enriched Generative AI
协作研究:框架:hpcGPT:通过 HPC 丰富的生成式 AI 增强计算中心用户支持
  • 批准号:
    2411294
  • 财政年份:
    2024
  • 资助金额:
    $ 34.52万
  • 项目类别:
    Standard Grant
Collaborative Research: Frameworks: hpcGPT: Enhancing Computing Center User Support with HPC-enriched Generative AI
协作研究:框架:hpcGPT:通过 HPC 丰富的生成式 AI 增强计算中心用户支持
  • 批准号:
    2411298
  • 财政年份:
    2024
  • 资助金额:
    $ 34.52万
  • 项目类别:
    Standard Grant
Collaborative Research: Frameworks: hpcGPT: Enhancing Computing Center User Support with HPC-enriched Generative AI
协作研究:框架:hpcGPT:通过 HPC 丰富的生成式 AI 增强计算中心用户支持
  • 批准号:
    2411296
  • 财政年份:
    2024
  • 资助金额:
    $ 34.52万
  • 项目类别:
    Standard Grant
Collaborative Research: HNDS-I: NewsScribe - Extending and Enhancing the Media Cloud Searchable Global Online News Archive
合作研究:HNDS-I:NewsScribe - 扩展和增强媒体云可搜索全球在线新闻档案
  • 批准号:
    2341859
  • 财政年份:
    2024
  • 资助金额:
    $ 34.52万
  • 项目类别:
    Standard Grant
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了