A Study on the Vertical Circulation and Structure of Metallic Ions in the Mid-Latitude Ionosphere

中纬度电离层金属离子垂直环流与结构研究

• 批准号: 0633418
• 负责人: Qihou Zhou
• 金额: $ 34.18万
• 依托单位: Miami University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-06-01 至 2013-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0633418&HistoricalAwards=false
• 关键词: Study; Vertical; Circulation; Structure; Metallic

The investigators will study physical processes in the 120-180 km region of the atmosphere, particularly the intermediate layer, an ionization layer present at mid-latitude in this altitude range. Although the incoherent scatter radar (ISR) observations at Arecibo show that the intermediate layer forms practically every day, its composition, structure, and formation mechanism are still not well understood. The investigators will use the Arecibo ISR, in conjunction with lidars and all-sky imagers, to determine the ion composition of the intermediate layers, to develop a one-dimensional metallic ion circulation model, and to study the horizontal inhomogeneity of intermediate and their relation to gravity waves in the E and F valley region. The project will lead to improved knowledge about vertical metallic ion distribution, the intermediate layer composition, and formation mechanism. It would also improve general understanding of atmospheric dynamics related to gravity wave, tides and planetary wave, since the long lifetime of metallic ions makes them a good tracer to study the dynamics at various scales. Many aspects of the research will be directly integrated into several courses at the Electrical and Computer Engineering (ECE) Department at Miami University. Radar coding techniques to increase the signal-to-noise ratio will be incorporated into an online junior level course, Signals and Systems. A new method that is superior to wavelet analysis in analyzing non-stationary signals will be part of the Digital Signal Processing course for senior/graduate students. Many aspects of the research will be included in a new senior/graduate level course, Atmospheric Remote Sensing, to introduce students to the field of aeronomy and as undergraduate senior capstone projects topics. Also, the online course will be made available free to Central State University, a historically black university, through the Ohio 3rd Frontier Network. All the ISR data will be made publicly available.

研究人员将研究大气区域120-180公里区域的物理过程，尤其是中间层，这是一个高度范围内纬度的电离层。 尽管在Arecibo上的不一致的散射雷达（ISR）观测表明，中间层实际上每天形成，但其组成，结构和地层机制仍未得到充分了解。 研究人员将使用arecibo ISR与激光雷达和全天空成像仪一起确定中间层的离子组成，以开发一个一维金属离子循环模型，并研究中间体的水平吸入性及其与E和F阀区域中的重力波的关系。 该项目将导致有关垂直金属离子分布，中间层组成和形成机制的提高知识。 这也将提高人们对与重力波，潮汐和行星波相关的大气动力学的一般理解，因为金属离子的长寿命使它们成为研究各种尺度的动力学的良好示踪剂。 该研究的许多方面将直接纳入迈阿密大学电气和计算机工程系（ECE）系的多个课程。 增加信噪比的雷达编码技术将纳入在线初级课程，信号和系统中。 一种在分析非平稳信号时优于小波分析的新方法将成为高级/研究生的数字信号处理课程的一部分。 这项研究的许多方面都将包括在新的高级/研究生级课程中，大气遥感，将学生介绍到航空领域，并成为本科高级盖帽项目主题。 此外，在线课程将通过俄亥俄州第三届边境网络免费提供给历史悠久的黑人大学中央州立大学。 所有ISR数据将公开可用。