CEDAR: Analysis of Nightglow Imagery and Coordinated Optical and Radar Data to Investigate the Propagation and Sources of Small-Scale Gravity Waves

研究人员将利用低、中、高纬度仪器组站点的现有协调测量结果，调查短周期重力波对中间层和低热层区域的影响。 特别是，研究集中在这些波的来源和季节性变化。 将使用的仪器包括气辉成像仪、风和温度激光雷达以及雷达。 研究人员将使用重力波的同步观测和整个MLT地区风场和温度场的高度分辨测量。 通过将几个关键站点提供的数据与最先进的建模能力结合起来，他们将研究风过滤对波通量转移到MLT的区域影响，并在不同的源条件下确定其主要来源。 这项研究对于了解观测到的季节性变化和帮助量化小尺度重力波对MLT地区的区域影响至关重要。 这些结果将应用于全球变化和空间天气对技术系统影响的研究。

The investigators will use existing coordinated measurements from low-, mid- and high-latitude instrument cluster sites to investigate the impact of short-period gravity waves on the mesosphere and lower thermosphere (MLT) region. In particular, the study concentrates on the sources and seasonal variability of these waves. Instruments to be used include airglow imagers, wind and temperature lidars, and radars. The investigators will use coincident observations of gravity waves and height-resolved measurements of the wind and temperature field throughout the MLT region. By together data available from several key sites with state-of-the-art modeling capabilities, they will study the regional effects of wind filtering on the wave flux transfer into the MLT and identify their dominant sources under differing source conditions. The study is essential to understand the observed seasonal variability and to help quantify the regional impact of small-scale gravity waves on the MLT region. These results will have application to studies of global change and space weather effects on technical systems.