Capturing Oceanic Submesoscales, Stirring and Mixing with Sound and Simulations

通过声音和模拟捕捉海洋亚尺度、搅拌和混合

• 批准号: EP/Y014693/1
• 负责人: Katy Sheen
• 金额: $ 322.54万
• 依托单位: UNIVERSITY OF EXETER
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2024
• 资助国家: 英国
• 起止时间: 2024 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FY014693%2F1
• 关键词: Capturing; Oceanic; Submesoscales; Stirring; Mixing

Capturing Oceanic Submesoscales, Stirring, and Mixing with Sound and Simulations (COSSMoSS) will tackle one of the most pressing questions in oceanography: what processes drive energy transfer and property distributions within the interior ocean? The global oceans underpin our climate and biosphere by distributing and storing tracers such as heat, carbon and nutrients. Yet, little is known about the submesoscale currents (SMCs) that both stir and mix these fundamental properties, and bridge large scale flows with microscale dissipation. Characterised by spatial scales of 10 m to 100 km, and timescales of hours to weeks, SMCs are inherently difficult to observe and model.COSSMoSS presents a pioneering experiment that will capture these unresolved interior phenomena at a global hotspot of ocean-basin interchange: the Brazil-Malvinas Confluence (BMC). Here Atlantic and Southern Ocean waters collide and exchange heat, salt, oxygen, carbon and nutrients. Sharp lateral gradients, energetic flows, and sloping topography are highly conducive to SMC generation, stirring, and mixing. Active acoustics will be combined for the first time with autonomous and vessel-based instrumentation to sample the BMC at unprecedented resolutions that capture SMCs. In parallel, observations will validate and advance cutting-edge simulations, to quantify SMC initiation, ubiquity and interactions. By revealing interior ocean dynamics in unparalleled detail, COSSMoSS will shed light on the pathways of oceanic tracer and energy exchange, leading to an improved understanding of our future biosphere and climate.My unique combination of expertise in ocean acoustics, dynamics, and research at sea, make me the ideal leader for COSSMoSS. While driving forward a new international collaboration with project partner Prof. J. McWilliams (University of California Los Angeles), I will use my demonstrated research independence, global profile, and leadership skills to ensure its success.

捕捉海洋亚中尺度，搅拌，并与声音和模拟混合（COSSMoss）将解决海洋学中最紧迫的问题之一：什么过程驱动内部海洋的能量转移和属性分布？全球海洋通过分布和储存热量、碳和营养物等示踪物，支撑着我们的气候和生物圈。然而，很少有人知道的亚中尺度流（SMC），既搅拌和混合这些基本属性，桥梁大尺度流动与微尺度耗散。SMCs的空间尺度为10米至100公里，时间尺度为数小时至数周，本质上难以观察和建模。COSSMoss提出了一个开创性的实验，将捕捉这些未解决的内部现象，在全球热点的海洋盆地交换：巴西-马尔维纳斯汇流（BMC）。在这里，大西洋和南大洋的沃茨相互碰撞，交换热量、盐分、氧气、碳和营养物质。急剧的横向梯度，充满活力的流动，和倾斜的地形是非常有利于SMC的产生，搅拌和混合。主动声学将首次与自主和基于船舶的仪器相结合，以前所未有的分辨率对BMC进行采样，以捕获SMC。同时，观察将验证和推进尖端模拟，以量化SMC的启动，普遍性和相互作用。通过以无与伦比的细节揭示内部海洋动力学，COSSMoss将揭示海洋示踪剂和能量交换的途径，从而更好地了解我们未来的生物圈和气候。我在海洋声学，动力学和海上研究方面的独特专业知识组合，使我成为COSSMoss的理想领导者。在推动与项目合作伙伴J. McWilliams教授（加州洛杉矶大学）的新的国际合作的同时，我将利用我所展示的研究独立性，全球形象和领导能力来确保其成功。