Studies of Gravity Waves in the Atmosphere

波在大气层的各个层次中传播，有点类似于海洋中的波，并凭借它们携带的能量和动量将大气层上层和下层连接起来。被称为行进离子扰动的波起源于极光区，并在全球范围内传播，而被称为次声的波的来源相对较近，区域影响有限。大部分波浪都是由气象事件引发，传播数千公里，并以指数增长的方式上升到很高的高度。这项工作的目的是发展对高层大气中的声波重力波(AGW)的理论认识，主要集中在五个方面：1)参与世界声波重力波研究(WAGS)，2)相干雷达对大气波和湍流的研究，3)现实大气中AGW传播的模型计算，4)大气中尺度扰动的非线性相互作用；5)中大气重力波连续谱的混沌模拟。

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.