Collaborative Research: Observations and Modeling of Acoustic Waves in the Ionosphere and Lower Thermosphere

该项目将进行模拟和数据分析工作，以评估声波和高频重力波对高层大气的热、化学和动力学状态的影响程度。具体而言，该项目将：(1)使用数字高频多普勒探测仪(TIDDBIT)从北美两个地点观测电离层扰动；(2)使用数值波传播模型推断导致观测到的电离层变化的基本大气扰动，并确定进入电离层的能量和动量通量的特征；(3)使用群速度和光线跟踪模型检查声波的来源。

This project will conduct a modeling and data analysis effort to assess the extent to which acoustic waves and high frequency gravity waves influence the thermal, chemical, and dynamical states of the upper atmosphere. Specifically, the project will: (1) observe ionospheric perturbations using digital high-frequency Doppler sounders (TIDDBIT) from two North American locations; (2) use a numerical wave propagation model to infer the underlying atmospheric perturbations that cause the observed ionospheric variations and to characterize the energy and momentum flux into the ionosphere; and (3) use group velocity and raytracing models to examine sources of acoustic waves.