Collaborative Research: A Model-Based Synthesis of Mid Atlantic Bight Pioneer Array Data to Infer Across-shelf Fluxes, Frontal Variability, and Characteristics of the Array

合作研究：基于模型的大西洋中湾先锋阵列数据综合，以推断跨大陆架通量、锋面变化和阵列特征

• 批准号: 1459665
• 负责人: Andrew Moore
• 金额: $ 30.71万
• 依托单位: University of California-Santa Cruz
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-03-01 至 2020-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1459665&HistoricalAwards=false
• 关键词: Collaborative; Research; Model; Based; Synthesis

In support of the National Science Foundation Ocean Observatories Initiative, the objective of the proposed research is to provide a synthesis of all existing and future observations collected by the Pioneer Array in the Mid-Atlantic Bight. Observation impact and observation sensitivity calculations will be used to evaluate the observing array. Until now, this has been largely the domain of numerical weather prediction. The proposed research will yield a sequence of high quality circulation analyses for the Mid-Atlantic Bight that will shed new light on the relative role of instability, eddy fluxes and surface forcing in promoting cross-shelf exchange and in shaping the circulation of the region. The resulting circulation analyses will be made available on a web server at Rutgers University and will represent a valuable community resource. Model configurations from this project will be used to frame lectures for international summer schools addressing advanced methods in applied coastal ocean modeling and data assimilation to senior graduate students and early career scientists. The project will also train a graduate student.The specific goals of the project are to: (i) compute retroactive and near real-time analyses of the ocean circulation in the domain spanned by the Pioneer Array using a state-of-the-art ocean model and data assimilation system; (ii) explore the dynamics of shelf exchange processes; and (iii) evaluate the Pioneer Array design using dynamically motivated metrics of the shelf circulation. The Pioneer Array observations will be synthesized using a multi-scale configuration of the Regional Ocean Modeling System and a 4-dimensional variational data assimilation system. Being directly constrained by the observations, the resulting 3-dimensional time-evolving circulation estimates will be more reliable than either the model or the observations considered in isolation. The circulation estimates are expected to span the period 2015-2018 and will provide a valuable and seamless multi-year and multi-scale ocean data set that will be used to explore the dynamics of shelf-break processes in the region including seasonal variability in cross-shelf fluxes associated with stratification, eddy fluxes, the formation of boundary layers, and the occurrence of episodic exchange events across the shelf-break. The ability of the moored and mobile components of the Pioneer Array to address specific science questions will be evaluated using a suite of sophisticated analysis tools that quantify the impact of individual observations and assets on specific circulation metrics that target the aforementioned physical processes. The complimentary suite of tools used will include observation impact and observation sensitivity calculations, identification of the array modes, and observing system simulation experiments

为了支持国家科学基金会海洋观测站计划，拟议研究的目标是综合大西洋中湾先锋阵列收集的所有现有和未来的观测结果。观测影响和观测灵敏度计算将用于评估观测阵列。 到目前为止，这主要属于数值天气预报领域。拟议的研究将对大西洋中湾进行一系列高质量的环流分析，这将为研究不稳定、涡流和表面强迫在促进跨陆架交换和塑造该地区环流方面的相对作用提供新的线索。 由此产生的流通分析将在罗格斯大学的网络服务器上提供，并将成为宝贵的社区资源。该项目的模型配置将用于构建国际暑期学校的讲座，向高年级研究生和早期职业科学家介绍应用沿海海洋建模和数据同化的先进方法。该项目还将培训一名研究生。该项目的具体目标是：（i）使用最先进的技术对先锋阵列所跨越的区域中的海洋环流进行追溯和近实时分析海洋模型和资料同化系统； (ii) 探索货架交换过程的动态； (iii) 使用货架循环的动态激励指标评估 Pioneer Array 设计。先锋阵列观测数据将使用区域海洋模拟系统的多尺度配置和 4 维变分数据同化系统进行综合。由于受到观测的直接约束，所得到的 3 维时间演化环流估计将比单独考虑的模型或观测更可靠。环流估计预计涵盖 2015 年至 2018 年期间，并将提供有价值且无缝的多年和多尺度海洋数据集，该数据集将用于探索该地区陆架破裂过程的动态，包括跨区域的季节性变化。 -与分层、涡流、边界层的形成以及跨陆架断裂的偶发性交换事件的发生相关的陆架通量。先锋阵列的系泊和移动组件解决特定科学问题的能力将使用一套复杂的分析工具进行评估，这些工具可量化个人观测和资产对针对上述物理过程的特定循环指标的影响。使用的免费工具套件将包括观测影响和观测灵敏度计算、阵列模式识别以及观测系统模拟实验