Collaborative Research: NSFGEO-NERC: QUICCHE: Quantifying Interocean fluxes in the Cape Cauldron Hotspot of Eddy kinetic energy

合作研究：NSFGEO-NERC：QUICCHE：量化涡流动能 Cape Cauldron 热点中的洋间通量

• 批准号: 2148677
• 负责人: Kathleen Donohue
• 金额: $ 206.21万
• 依托单位: University of Rhode Island
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-04-01 至 2027-03-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2148677&HistoricalAwards=false
• 关键词: Collaborative; Research; NSFGEO; NERC; QUICCHE

This is a project that is jointly funded by the National Science Foundation’s Directorate of Geosciences (NSF/GEO) and the National Environment Research Council (UKRI/NERC) of the United Kingdom (UK) via the NSF/GEO-NERC Lead Agency Agreement. This Agreement allows a single joint US/UK proposal to be submitted and peer-reviewed by the Agency whose investigator has the largest proportion of the budget. Upon successful joint determination of an award, each Agency funds the proportion of the budget and the investigators associated with its own ivestigators and component of the work.The Cape Basin in the southeast Atlantic is a global hotspot of eddy kinetic energy, fed by a leakage of waters from the subtropical Indian Ocean via the Agulhas Current. A proportion of warm and salty Agulhas waters is vigorously stirred and mixed into the cooler and fresher Atlantic by co-interacting rings and eddies. This project will address the hypothesis that a large proportion of the Indian Ocean waters that leak into the Atlantic is to be found in submesoscale (less than approximately 1 km) features generated by deformations of the mesoscale (tens to hundreds of km) flow field. The project will observe and characterize, for the first time, submesoscale features generated by mesoscale recirculations within the Cape Cauldron. The observations will be used to estimate Agulhas leakage fluxes with theoretical eddy diffusivity and eddy flux frameworks. The results will be related to new and existing satellite altimeter observations to infer variability in Agulhas leakage. Outreach and education activities include production of two short films aboard ship, student and intern visits to the ship, hands-on experience building ocean drifters at Miami high schools, and creation of a popular science article and an educational, oceanographic card game for school children.This project will entail the collection of new observations within the Cape Basin of filamentation and eddy interaction to measure the related submesoscale features and estimate diffusivities. These measurements will be used to quantify eddy heat and salt fluxes. Observations will be made using both Eulerian and Lagrangian instrumentation, including moorings, an undulating CTD system, gliders, drifters, profiling floats, and microstructure turbulence profilers, capturing time and space scales from hours to seasons and from 1 to 100 km. The observations will be synthesized and analyzed with other datasets including measurements from the SWOT crossover in the Cape Basin and output from an ocean model. The observations will also be used to evaluate the new NASA SWOT (Surface Water and Ocean Topography) satellite mission at a swatch crossover point in the study region.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.

这是一个由国家科学基金会地球科学局（NSF/GEO）和英国国家环境研究委员会（UK）（UK）（UK）共同资助的项目。该协议允许该机构提交和同行评审的一项联合提案，其调查员的预算比例最大。成功确定奖励后，每个机构都为预算的比例和与其自己的捕食者和作品的组成部分相关的调查人员提供了资金。东南大西洋的盆地盆地是埃迪动能的全球热点，该热点是由苏格拉斯海洋海洋海洋中的水域泄漏出来的。一定比例的温暖和咸的Agulhas水域被大力确定，并通过共同交互的环和涡流混合到冷却器和更新鲜的大西洋中。该项目将解决以下假设：在子尺度（小于大约1 km）的特征中，将大部分泄漏到大西洋的印度洋水域由中尺度（数十亿至数百公里）流场产生的特征产生。该项目将首次观察并表征由Cape Cape Cauldron内的中尺度再循环产生的子尺度特征。这些观察结果将用于估计具有理论上涡流扩散率和涡流框架的Agulhas泄漏通量。结果将与新的和现有的卫星高度计观测值有关，以推断agulhas泄漏的变异性。外展和教育活动包括制作船上的两部短片，学生和实习生访问，在迈阿密高中建造海洋漂流者的动手经验，以及创建流行的科学文章以及针对小学生的教育性，海洋卡游戏。该项目将需要在Filement和Eddy交互和估算相关sissecalesscale and Indersscale and Indersscale and Indersscale and Indersscale and Indersscale and Indersscale and Issecale and Issesscale and Issesscale and Issesscale功能中收集新的观察结果。这些测量将用于量化涡流和盐通量。将使用Eulerian和Lagrangian仪器进行观察，包括系泊设备，起伏的CTD系统，滑翔机，钻头，分析浮子和微结构湍流探测器，从小时到季节和1 km捕获时间和空间缩放。这些观察结果将与其他数据集合成和分析，包括来自Cape盆地中SWOT跨界的测量以及海洋模型的输出。该观察结果还将用于评估研究区域的一个Swatch跨界点的新的NASA SWOT（地表水和海洋地形）卫星任务。该奖项反映了NSF的法定任务，并通过使用基金会的知识分子优点和更广泛的影响标准来评估NSF的法定任务。