Observational Analysis and Numerical Experiments on Energy Transformations in the Vertical Spectral Domain

垂直谱域能量变换的观测分析和数值实验

• 批准号: 8923064
• 负责人: Hiroshi Tanaka
• 金额: $ 10.5万
• 依托单位: University of Alaska Fairbanks Campus
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-05-15 至 1992-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8923064&HistoricalAwards=false
• 关键词: Observational; Analysis; Numerical; Experiments; Energy

Recent results from studies of the energetics of the atmosphere show bimodal peaks in the vertical energy spectrum of large-scale motions. However, few details are known of the physical processes responsible for the vertical energy spectrum or of energy transformations. The principal investigator will examine the energy spectrum, its maintenance, and energy transformation in the vertical spectral domain using the analyzed fields of data from the 1979 Global Weather Experiment (the so-called FGGE III-b data) and a three-dimensional spectral model. The research will employ a numerical framework known as normal modes for the analysis. The results will show how energy is redistributed vertically to motion at many scales. Ultimately, the research could serve as a basis for improvements for global numerical models.

最近对大气能量学的研究结果表明，在大尺度运动的垂直能谱中存在双峰。然而，人们对垂直能谱或能量转换的物理过程知之甚少。首席研究员将使用1979年全球天气实验（FGGE III-b数据）和三维光谱模型分析的数据场，检查能谱、其维护和垂直光谱域的能量转换。该研究将采用一种称为正常模态的数值框架进行分析。结果将显示能量如何在许多尺度上垂直地重新分配到运动中。最终，这项研究可以作为改进全球数值模式的基础。