CEDAR: Evaluating the Source of Electrodynamic Variability at Low-Latitudes

CEDAR：评估低纬度地区电动力变化的来源

• 批准号: 0003174
• 负责人: Timothy Fuller-Rowell
• 金额: $ 21.6万
• 依托单位: University of Colorado at Boulder
• 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: 2001-03-15 至 2004-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0003174&HistoricalAwards=false
• 关键词: CEDAR; Evaluating; Source; Electrodynamic; Variability

The investigators will study the source of variability of the equatorial F-region vertical plasma drift. Two possible sources will be investigated: The day-to-day changes in the amplitude of the tidal modes propagating from the lower atmosphere, and the variability induced by fluctuating magnetospheric sources at high latitudes. The first study will involve forcing the model with realistic hour-to-hour and day-to-day variability in the tidal modes at the base of the thermosphere. This will be based on the measurements from incoherent scatter radar sites, from meteor wind radar, and from satellite observations. The second study will involve forcing the model with realistic hour-to-hour and day-to-day changes in the magnetospheric sources. The study will make use of a coupled global model of the thermosphere, ionosphere, and plasmasphere.

研究人员将研究赤道F区垂直等离子体漂移的可变性来源。将调查两个可能的来源：从低层大气传播的潮汐模式幅度的逐日变化，以及高纬度磁层源波动引起的可变性。第一项研究将涉及迫使该模型在热层底部的潮汐模式中具有现实的逐小时和逐日变化。这将基于非相干散射雷达站、流星风雷达和卫星观测的测量结果。第二项研究将涉及用磁层源中真实的逐小时和逐日变化来强制该模型。这项研究将利用热层、电离层和等离子体层的耦合全球模式。