Investigating Multi-Scale Dynamical Processes Amplifying Storm Surges

这项研究旨在调查美国沿海洪水增加的原因，与高潮和风暴潮有关。它将确定沿海洪水事件的逐年变化，并试图确定其原因。这项研究还将提出最容易受到风暴和涨潮洪水影响的地区。为了实现这些目标，该研究将执行三项任务：1）分析公开可用的数据; 2）执行简化的海洋动力学数学模型，以尝试隔离洪水事件的主要驱动机制; 3）分析全球海洋群落模型（GLORY S12 v1）的结果，该模型经常使用全球尺度数据进行更新。这项研究的结果应有助于评估风险沿海洪水沿着美国。这些结果将以易于理解的格式向更广泛的受众传播。此外，这项研究将为本科生提供研究机会。后两项活动将通过伍兹霍尔海洋研究所的外联活动来实现。这项研究将探讨在美国产生和放大与涨潮和风暴潮有关的沿海洪水的各种因素。它将调查穿越整个海洋盆地并因水深测量而改变的大气系统的反应。此外，该研究将提出最容易遭受洪水的地区，确定大气和海洋强迫对风暴潮严重程度的季节性和年际变化的影响，并确定导致沿着美国海岸洪水事件增加的过程。这些目标将通过以下方式实现：（a）分析验潮仪和卫星观测;（B）重新分析1/12度GLORY产品;（c）利用表面风应力和大气压力驱动的1/16度双层海洋模型，分析面向过程的海洋模型实验。作为更广泛的影响，更好地了解造成沿海洪水的因素之间的相互作用，应有助于有效的风险管理和灾害应对，以减轻其影响。调查结果将通过伍兹霍尔科学和技术教育伙伴关系传播给更广泛的受众。此外，该项目将通过伍兹霍尔海洋研究所的暑期学生奖学金计划为本科生提供研究机会。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

This study aims to investigate the reasons for increased coastal flooding in the US, as related to high tide and storm surge. It will determine year-to-year variability of coastal flooding events and try to identify its causes. The study will also propose regions of most vulnerability to flooding from storms and high tides. To achieve these aims, the study will carry out three tasks: 1) analyze data that are publicly available; 2) execute simplified mathematical models of the ocean dynamics to try to isolate the main driving mechanisms of flooding events; and 3) analyze results from a global ocean community model (GLORYS12v1) that is frequently updated with global-scale data. Results from this study should help in the assessment of risk to coastal flooding along the US. Such results will be disseminated in an understandable format to wider audiences. Furthermore, the study will provide research opportunities to undergraduate students. The latter two activities will be achieved via outreach initiatives at the Woods Hole Oceanographic Institution.This study will explore various factors that generate and amplify coastal flooding related to high tides and storm surge in the US. It will investigate responses to atmospheric systems that traverse an entire ocean basin and that are modified by bathymetry. In addition, the study will propose regions that could be most vulnerable to flooding, determine the effect of seasonal and interannual variations in atmospheric and ocean forcing on storm surge severity, and identify processes that have contributed to increased flooding events along US coasts. These aims will be achieved through a) analysis of tide gauge and satellite observations; b) reanalysis of the 1/12degree GLORYS products; and c) analysis of process-oriented ocean model experiments using a 1/16degree, 2-layer ocean model driven by surface wind stress and atmospheric pressure. As Broader Impacts, the improved understanding of the interplay among factors that cause coastal flooding should allow effective risk management and disaster response to mitigate its impacts. Findings would be disseminated to a wider audience through the Woods Hole Science and Technology Education Partnership. Additionally, the project will furnish research opportunities for undergraduates through the Summer Student Fellowship Program of the Woods Hole Oceanographic Institute.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.