Studies of Gravity Waves in the Atmosphere

大气中重力波的研究

• 批准号: 9016082
• 负责人: K. Yeh
• 金额: $ 39万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-03-01 至 1995-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9016082&HistoricalAwards=false
• 关键词: Studies; Gravity; Waves; Atmosphere

Waves propogate through all levels of the atmosphere, somewhat analagous to waves in the ocean, and serve to couple the upper and lower atmosphere regions by virtue of the energy and momentum that they carry. Waves known as traveling ionic disturbances originate in the auroral zones and travel globally, while waves known as infrasonde have relatively nearby sources and restricted regional effects. The majority of waves arise from meteorological events and propagate thousands of kilometers and ascend to great height with exponential growth. The work in this project is aimed at developing theoretical understanding of acoustic gravity waves (AGW) in the upper atmosphere with efforts concentrated in five particular areas: 1) participation in the World Acoustic Gravity Wave Study (WAGS), 2) studies of atmospheric waves and turbulence by coherent radars, 3) model computation of AGW propagation in a realistic atmosphere, 4) nonlinear interaction of mesoscale perturbations in the atmosphere, and 5) modeling of the middle atmosphere gravity wave continuum in terms of chaos.

波在大气层的各个层面传播， 有点类似于海洋中的波浪，并用于耦合 高层和低层大气区域凭借的能量和 他们所携带的动力。 被称为移动离子的波 扰动起源于极光带并在全球传播， 而被称为次声的波具有相对较近的源， 有限的区域影响。 大多数的波浪 从气象事件中传播数千公里 并以指数增长的方式上升到很高的高度。 的工作 该项目旨在发展理论理解， 大气层中的声重力波（AGW）， 主要集中在五个方面：1）参与 世界声学重力波研究（WAGS），2） 相干雷达观测大气波动和湍流，3）模式 AGW在实际大气中传播的计算，4） 中尺度扰动的非线性相互作用 中层大气重力波模拟 从混沌的角度来看。