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

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。 将研究两个可能的来源：从低层大气传播的潮汐模式振幅的逐日变化，以及高纬度磁层源波动引起的变化。 第一项研究将涉及在热层底部的潮汐模式中用现实的逐小时和逐日变化来强迫模型。 这将基于非相干散射雷达站点、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每小时和每天的实际变化来强迫模型。 这项研究将利用热层、电离层和等离子体磁层的全球耦合模型。

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.