Numerical and Observational Studies of Mountain Wave Breaking, PV Banners, and Momentum Transports in Support of the Mesoscale Alpine Program
支持中尺度高山计划的山地波浪破碎、光伏横幅和动量传输的数值和观测研究
基本信息
- 批准号:9816160
- 负责人:
- 金额:$ 20.97万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:1999
- 资助国家:美国
- 起止时间:1999-04-15 至 2003-03-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The Mesoscale Alpine Programme (MAP) is an international program that, inter alia, offers an unprecedented opportunity to quantify understanding of airflow dynamics in the vicinity of complex terrain. The Principal Investigator will participate in the MAP and will focus on the following specific topics: mountain wave/boundary-layer interactions, instability dynamics and evolution, generation of potential vorticity (PV) banners, momentum transport and deposition aloft, and flow intermittency over three-dimensional terrain.The Principal Investigator will address these topics through a coordinated program of numerical simulations and observational efforts performed as a component of the U. S. participation in MAP. One class of numerical studies will examine the excitation and evolution of strong wave events in the presence of realistic boundary-layer flows and three-dimensional terrain. Other simulations will address wave breaking over complex terrain, the origins and scales of PV banners arising from localized wave instability and dissipation, and the influences of these processes on momentum transports and flow intermittency. Observational efforts will include participation in the MAP field program, inputs to aircraft flight planning and instrument measurement modes (dependent on model mountain wave forecasts, measurement objectives, and available instrumentation), and data analysis efforts aimed at quantifying the dynamics of mountain wave excitation, breaking, momentum transports, and intermittency.Successful completion of this research will lead to a better understanding of airflow near complex terrain including a better understanding and potentially better forecasts of clear air turbulence.
中尺度高山计划(MAP)是一项国际计划,除其他外,它为量化了解复杂地形附近的气流动力学提供了前所未有的机会。 首席研究员将参与 MAP 并将重点关注以下具体主题:山波/边界层相互作用、不稳定动力学和演化、位涡 (PV) 旗的生成、高空动量传输和沉积以及三维地形上的流动间歇性。首席研究员将通过协调的数值模拟和观测工作来解决这些主题,作为美国参与 MAP 的一部分。 地图。 一类数值研究将研究在存在真实边界层流和三维地形的情况下强波事件的激发和演化。 其他模拟将解决复杂地形上的波浪破碎、局部波浪不稳定和消散引起的光伏旗帜的起源和规模,以及这些过程对动量传输和流动间歇性的影响。 观测工作将包括参与 MAP 现场计划、对飞机飞行计划和仪器测量模式的输入(取决于模型山波预报、测量目标和可用仪器),以及旨在量化山波激励、破碎、动量传输和间歇性动态的数据分析工作。成功完成这项研究将有助于更好地了解复杂地形附近的气流,包括更好地理解和潜在地更好地了解气流。 晴空气湍流的预报。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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David Fritts其他文献
David Fritts的其他文献
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{{ truncateString('David Fritts', 18)}}的其他基金
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利用阿根廷南部敏捷流星雷达 (SAAMER) 进行中层和低层热层动力学研究、相关测量和建模
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- 资助金额:
$ 20.97万 - 项目类别:
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Multi-Scale Dynamics Studies Using the Drake Antarctic Agile Meteor Radar
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1744801 - 财政年份:2018
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1445783 - 财政年份:2015
- 资助金额:
$ 20.97万 - 项目类别:
Continuing Grant
Collaborative Research: Quantification of Gravity Wave Momentum Fluxes and Instability Events in the Mesosphere and Lower Thermosphere (MLT) Region at High- and Mid- Latitudes
合作研究:高、中纬度中层和低热层(MLT)区域重力波动量通量和不稳定事件的量化
- 批准号:
1449633 - 财政年份:2015
- 资助金额:
$ 20.97万 - 项目类别:
Continuing Grant
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合作研究:深度传播重力波(DEEPWAVE)
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1338646 - 财政年份:2014
- 资助金额:
$ 20.97万 - 项目类别:
Continuing Grant
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