CEDAR: Ionospheric Effects of Rapid Solar XUV Variations

CEDAR：太阳 XUV 快速变化的电离层效应

• 批准号: 0086477
• 负责人: G. Randall Gladstone
• 金额: --
• 依托单位: Southwest Research Institute
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-07-01 至 2004-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0086477&HistoricalAwards=false
• 关键词: CEDAR; Ionospheric; Effects; Rapid; Solar

The investigators will study the ionospheric response to short-term variations in the solar spectrum; particularly those associated with solar flares. Solar radiation in the soft X-ray and extreme ultraviolet spectral regions is the source of the non-auroral ionosphere. Variations in the solar flux may perturb the ionospheric morphology and behavior. The study use theoretical models and incoherent scatter radar measurements to investigate the effects on electron density, ion composition, minor species concentrations, and airglow. The investigators will also use Faraday rotation measurements of very high frequency signals from geostationary satellites to compare with models of the seasonal and latitudinal asymmetries in total electron content during ionospheric disturbances.

调查人员将研究电离层对太阳光谱短期变化的反应，特别是与太阳耀斑有关的变化。 软X射线和极紫外光谱区的太阳辐射是非极光电离层的来源。 太阳辐射通量的变化会影响电离层的形态和行为。 该研究使用理论模型和非相干散射雷达测量来研究对电子密度、离子组成、次要物种浓度和气辉的影响。 研究人员还将使用对地球静止卫星甚高频信号的法拉第旋转测量，与电离层扰动期间总电子含量的季节和纬度不对称模型进行比较。