Ground-Based Investigation of Upflowing Ions in the Discrete Aurora

利用现有的雷达、光学和卫星观测，以及电离层流动连续性和能量平衡的分析时间依赖模型，对极光中的上行离子进行了研究。通过对Sondrestrom、EISCAT和EISCAT斯瓦尔巴德雷达数据以及广角光谱成像的回顾，首先建立了与强烈上升流事件相关的时空极光形态。从形态学研究中选择的事件被仔细审查，以提供详细的状态变量定量在极光离子流出事件。然后将状态变量用作时间依赖、耦合、连续性和能量平衡分析模型的约束，该模型模拟离子和中性扩散、光化学反应速率、亚稳态发射和热平衡。该模型将电离层的三维影响映射到地面，允许与地面观测进行显著比较。

Upflowing ions in the aurora are investigated by use of extant radar, optical, and satellite observations, and by analytical time-dependant modeling of ionospheric flow continuity and energy balance. The temporal and spatial auroral morphology associated with intense upflow events is first established by review of Sondrestrom, EISCAT, and EISCAT Svalbard radar data along with wide-angle optical spectral imaging. Selected events from the morphology study are scrutinized to provide detailed state-variable quantification during auroral ion outflow events. The state variables are then used as constraints on a time-dependent, coupled, continuity and energy balance analytical model that simulates ion and neutral diffusion, photochemical reaction rates, metastable emissions, and thermal balance. The model maps three-dimensional ionospheric affects to the ground, permitting salient comparison with ground-based observations.