Atmospheric Turbulence - Detailed Modeling and Characterization from Radosonde Observations

大气湍流 - 雷达探空仪观测的详细建模和表征

• 批准号: 1510354
• 负责人: Ling Wang
• 金额: $ 30万
• 依托单位: GLOBAL ATMOSPHERIC TECHNOLOGIES AND SCIENCES, INC.
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-09-01 至 2020-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1510354&HistoricalAwards=false
• 关键词: Atmospheric; Turbulence; Detailed; Modeling; Characterization

Turbulence in the free atmosphere plays a very important role in energy dissipation and the diffusive transport of heat, momentum, and constituents. Understanding the nature and influences of turbulence is among the most challenging topics in fluid dynamics, atmospheric and ocean sciences. The research will increase understanding of the life cycle of atmospheric turbulence from initiation to decay. It will also put the derivation of atmospheric turbulence quantities on a firmer basis than it is at present. The new study will be done, such as cataloging the climatology of unstable atmospheric layers that have not been done before.A better understanding of the occurrence and influences of atmospheric turbulence will contribute to many aspects of atmospheric science and applications. These range from improving understanding of the role of turbulent transport of atmospheric constituents, for example, to better forecast clear-air turbulence for aviation. A strong Ph.D student will gain expertise in state-of-the-art direct numerical simulation (DNS), radiosonde analysis, and the synergism of merging these efforts. The radiosonde analysis techniques and results will be made publicly available, hopefully stimulating additional investigations by other scientists.

自由大气中的湍流在能量耗散和热、动量、组分的扩散传输中起着非常重要的作用。了解湍流的性质和影响是流体力学、大气和海洋科学中最具挑战性的课题之一。这项研究将加深对大气湍流从形成到衰变的生命周期的理解。它还将使大气湍流量的推导建立在比目前更坚实的基础上。这项新的研究将进行，如编目以前没有做过的不稳定大气层的气候学。更好地了解大气湍流的发生和影响将有助于大气科学和应用的许多方面。例如，从提高对大气成分湍流输送作用的理解，到更好地预报航空领域的晴朗空气湍流，这些措施都包括在内。一名优秀的博士生将获得最先进的直接数值模拟(DNS)、无线电探空分析以及合并这些努力的协同效应方面的专业知识。无线电探空仪的分析技术和结果将公之于众，希望能刺激其他科学家进行更多研究。