Ionospheric Storm Transition Region Properties

该项目将利用数据同化模式，研究中纬度电离层扰动边缘的中等空间尺度上的等离子体结构，称为风暴增强密度(SED)。虽然这一专题最近才受到关注(与高纬和低纬现象有关)，但增进对SED产生和发展的了解对于提高天基通信和导航能力很重要。该项目将使用数值模型(IDA4D和EMIRE)来研究SED的空间结构及其物理驱动因素。辅助数据集--例如由Millstone Hill非相干散射雷达测量的场向等离子体速度、DMSP卫星数据、来自电离层电动力学同化映射(AMIE)模型的估计漂移速度以及来自GPS的总电子含量--也将用于与模型结果进行交叉比较。

This project will investigate plasma structuring on an intermediate spatial scale along the edges of mid-latitude ionosphere disturbances known as storm enhanced density (SED) using data-assimilative models. Although this topic has received attention only recently (relative to high- and low-latitude phenomena), improved understanding of SED generation and development is important for improving space-based communication and navigation capabilities. The project will use numerical models (IDA4D and EMPIRE) in order to study the spatial structuring of SEDs along with their physical drivers. Auxiliary data sets -- such as field-aligned plasma velocities measured by the Millstone Hill incoherent scatter radar, DMSP satellite data, estimated drift speeds from the Assimilative Mapping of Ionospheric Electrodynamics (AMIE) model, and total electron content measurements from GPS -- will also be used for cross-comparison with the model results.