An Observational Study to Quantify the Impact of Nearshore Processes on Air-Sea Momentum Transfer

量化近岸过程对海气动量传递影响的观测研究

• 批准号: 2319548
• 负责人: Henry Potter
• 金额: $ 30.2万
• 依托单位: Texas A&M University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-09-01 至 2026-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2319548&HistoricalAwards=false
• 关键词: Observational; Study; Quantify; Impact; Nearshore

The overarching goal of this project is to identify and systematically quantify coastal processes and features that alter nearshore air-sea momentum exchange. This will be achieved through analysis of an existing data set collected by the PI at the Army Field Research Facility (FRF) in Duck, NC. Data were recorded between August 2021 and January 2023 by five high frequency 3-D anemometers mounted on the pierhead and beach tower. The extensive observational network at FRF will be leveraged to characterize the nearshore environment and quantify its impact on the drag coefficient. In continued support of underrepresented students in STEM, this project will fund undergraduate students with disabilities from Texas A&M University. Students recruited outside STEM disciplines will have the opportunity to participate in high impact learning experiences that may otherwise be unavailable. Those from within the College of Arts and Sciences will be encouraged to produce an undergraduate thesis based on their research. Participants will present their results at Texas A&M Student Research Week. A graduate student will also be supported through this research. The PI will work with the NSF funded Louis Stokes Alliance for Minority Participation program (LSAMP) to help recruit a student from a group underrepresented in STEM from Texas A&M or another LSAMP university. The PI and graduate student will work with On the Ocean, a radio show from Texas A&M University and broadcast on the local National Public Radio Affiliate, KAMU, to produce eight radio segments resulting from this research. The segments will be broadcast in two series of four episodes each on the subjects of air-sea interaction and the physics of the coastal environment.This work is motivated by the need to improve parameterization of the air-to-sea momentum flux for nearshore use. This remains a significant challenge because parameterizations don’t adequately account for the impacts of surface currents and their feedback, wave shoaling or breaking, the effects of onshore topography, or weather systems that alter atmospheric stability. This further limits the ability to predict the true impact of wind forcing on the ocean or any wind-driven coastal process. The result of this research will be an in-depth understanding of the influence of coastal processes on momentum transfer and the surface layer flux profile, thereby leading to more accurate parameterization. The results are expected to lead to a more robust understanding of nearshore wave growth and breaking, which are important for whitecap creation, cloud formation, subsurface turbulence, acoustics, wave run-up and coastal erosion, sea ice breakup, and heat and gas exchange at the air-sea interface.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.

该项目的总体目标是确定并系统地量化沿海空气势头交流的沿海过程和特征。这将通过对北卡罗来纳州Duck的陆军现场研究机构（FRF）收集的现有数据集的分析来实现。在2021年8月至2023年1月之间，数据记录在码头和海滩塔上的五个高频3-D注射仪。 FRF的广泛观察网络将被利用以表征近岸环境并量化其对阻力系数的影响。为了持续支持STEM中代表性不足的学生，该项目将资助来自德克萨斯A＆M大学的残疾本科生。招募在STEM学科外部的学生将有机会参加否则可能无法获得的高影响力学习经验。鼓励艺术与科学学院内的人根据他们的研究提出本科论文。参与者将在德克萨斯州A＆M学生研究周上介绍其结果。这项研究也将支持研究生。 PI将与NSF资助的Louis Stokes少数族裔参与计划（LSAMP）合作，以帮助从德克萨斯州A＆M或另一个LSAMP大学的STEM中招募一个人数不足的小组的学生。 PI和研究生将与海洋合作，这是德克萨斯A＆M大学的广播节目，并在当地国家公共广播会员Kamu上广播，生产了这项研究的八个广播节目。这些细分市场将在两个系列的两个系列中播出，每个情节都在空中互动和沿海环境的物理学主题上。这项工作是出于需要改善空气到海量动量通量的参数化而进行的，以供近海使用。这仍然是一个重大的挑战，因为参数无法充分说明表面电流的影响及其反馈，波浪浅滩或破裂，陆上地形的影响或改变大气稳定性的天气系统。这进一步限制了预测风力强迫对海洋或任何风向沿海过程的真正影响的能力。这项研究的结果将深入了解沿海过程对动量转移和表面层通量曲线的影响，从而导致更准确的参数化。预计该结果将导致对近岸波的增长和破裂的更深入的了解，这对于WhiteCap创建，云形成，地下湍流，声学，声学，波浪升高和沿海侵蚀，海冰破裂，海冰破裂以及空中天然气交换在空中界面上，这表明NSF的稳定范围均具有稳定的梅勒，这表明了NSF的稳定范围，这是由诚实的构建效果。 标准。