The Effects of F-region Neutral Winds on the Topside Ionosphere

F区中性风对上部电离层的影响

• 批准号: 9908950
• 负责人: Roderick Heelis
• 金额: $ 12.06万
• 依托单位: University of Texas at Dallas
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-01-15 至 2001-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9908950&HistoricalAwards=false
• 关键词: Effects; region; Neutral; Winds; Topside

This award will investigate the relationships between F-region neutral winds and the topside ionospheric temperature and composition by using measurements of both these parameters taken simultaneously. An extensive database of nighttime F-region winds form Arequipa, South America, will be combined with topside latitudinal profiles of ionospheric density, temperature, and composition from the Defense Meteorological Satellite Program (DMSP) satellites. By comparing the daily variations in the topside with those seen in the meridional F-region wind, changes that may be directly attributable to the neutral winds will be determined. This study will be combined with a modeling effort using the Field Line Interhemispheric Plasma (FLIP) model to verify that the associations implied from the observations can be reproduced with the known physics. The heart of this study is to understand how the diffusive motions of the plasma in the topside of the ionosphere are changed by the action of F-region winds. Using these two approaches the roles of neutral winds and chemistry in controlling the field-aligned plasma motions in the topside ionosphere can be elucidated.

该奖项将通过同时测量这两个参数来调查F区中性风与电离层顶部温度和成分之间的关系。来自南美洲阿雷基帕的一个广泛的夜间F区风数据库将与国防气象卫星计划(DMSP)卫星的电离层密度、温度和成分的上层纬度剖面相结合。通过将上层的日变化与经向F区风的日变化进行比较，可以确定可能直接归因于中性风的变化。这项研究将与使用场线半球间等离子体(FLIP)模型的建模工作相结合，以验证从观测中隐含的联系可以与已知物理重现。这项研究的核心是了解F区风的作用如何改变电离层顶部等离子体的扩散运动。使用这两种方法，可以阐明中性风和化学在控制电离层上方的场向等离子体运动中的作用。