CEDAR: Probing the Upper E-region and Lower F-region Neutral Winds Using Ionospheric Heating

CEDAR：利用电离层加热探测上部 E 区和下部 F 区中性风

• 批准号: 1651467
• 负责人: Donald Hampton
• 金额: $ 26.91万
• 依托单位: University of Alaska Fairbanks Campus
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-08-15 至 2021-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1651467&HistoricalAwards=false
• 关键词: CEDAR; Probing; Upper; region; Lower

The goal of this proposal is to examine the response of thermospheric neutral winds to space weather. Local winds in the 150-250 km range are very difficult to measure owing to the absence of sustained optical emissions over this altitude range. The PI therefore proposes to artificially stimulate such emissions by directly heating the ionosphere using very high-power, high-frequency radio waves. These emissions will be detected by an instrument called a Fabry-Perot interferometer (FPI), that characterizes the properties of light emitted by molecules in motion. The heating of the ionosphere will take place at the High frequency Active Auroral Radar Project (HAARP) facility in Alaska. Two FPIs will be located within 320 km from the HAARP facility, in order to resolve the horizontal wind vector. Broader impacts of this proposal include Ph.D. training at UAF, STEM outreach to local schools, and raising the profile of the HAARP heating facility following its transition from military to UAF management.The specific goals of this project are to 1. Determine winds with high vertical (10 km) and temporal (several minutes) resolution through coordinated FPI and HAARP observing activity 2. Examine altitude and temporal variations in these winds under both artificial (HAARP-induced) and auroral conditions. The intellectual merits of the proposal lie in demonstrating the new wind recovery methods, and in resolving their altitudinal and temporal variability.

本提案的目的是研究热层中性风对空间天气的反应。150-250公里范围内的局地风很难测量，因为在这个高度范围内没有持续的光发射。因此，PI建议通过使用非常高功率的高频无线电波直接加热电离层来人为地刺激这种排放。这些辐射将被一种叫做法布里-珀罗干涉仪（FPI）的仪器检测到，该仪器可以表征运动分子发出的光的特性。电离层的加热将在阿拉斯加的高频主动极光雷达项目（HAARP）设施中进行。两个fpi将位于距离HAARP设施320公里的范围内，以解决水平风矢量。该提案的更广泛影响包括在UAF进行博士培训，向当地学校推广STEM，以及在从军事管理过渡到UAF管理后提高HAARP供暖设施的形象。这个项目的具体目标是1。通过协调FPI和HAARP观测活动确定具有高垂直（10公里）和时间（几分钟）分辨率的风。检查在人工（haarp诱导）和极光条件下这些风的高度和时间变化。该建议的智力优点在于展示了新的风回收方法，并解决了它们的高度和时间变化。