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

CEDAR：分析夜光图像以及协调的光学和雷达数据，以调查小尺度重力波的传播和来源

• 批准号: 0228914
• 负责人: Michael Taylor
• 金额: $ 27.09万
• 依托单位: Utah State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-03-01 至 2007-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0228914&HistoricalAwards=false
• 关键词: CEDAR; Analysis; Nightglow; Imagery; Coordinated

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.

调查人员将利用来自低、中、高纬度仪表组站点的现有协调测量来调查短周期重力波对中间层和低热层(MLT)区域的影响。特别是，研究集中在这些海浪的来源和季节变化上。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一致观测以及对整个MLT区域的风和温度场的高度分辨测量。通过将几个具有最先进模拟能力的关键站点提供的数据结合在一起，他们将研究风过滤对波通量转移到MLT的区域影响，并确定不同震源条件下的主要震源。这项研究对于了解观测到的季节变化和帮助量化小尺度重力波对MLT区域的影响至关重要。这些结果将应用于研究全球变化和空间天气对技术系统的影响。