Global Electrodynamics of the Aurora during Northward Interplanetary Magnetic Field (IMF) and Associated Ionosphere-Magnetosphere Interactions

超极极光弧是一种有趣的现象，目前还没有得到充分的解释。它涉及到复杂的磁层结构和动力学以及复杂的磁层-电离层耦合特征，这些特征是北行行磁场条件的特征。这是一个为期5年的数据分析项目，利用POLAR、IMAGE和DMSP卫星、太阳风监测仪和超级雷达网络的数据集，以及先进磁层-电离层耦合模型的模型结果，来解决有关这一现象的一些悬而未决的问题。该项目的三个具体目标是：(1)确定超极弧与其他同时发生的极光现象（如极光亚暴）之间的关系；(2)确定两极弧与两个半球电离层对流模式、降水粒子和场向流的关系；(3)研究过极弧演化过程中的磁层结构和动力学。该项目的更广泛影响包括研究生的参与和促进妇女在科学领域的发展。

Transpolar auroral arcs are an intriguing phenomenon that has not yet been fully explained. It relates to the complicated magnetosphere configuration and dynamics and complex magnetosphere-ionosphere coupling that characterize northward interplanetary field conditions. This is a 5-year data analysis project utilizing data sets from the POLAR, IMAGE and DMSP satellites, solar wind monitors and the SuperDARN radar network in addition to model results from advanced magnetosphere-ionosphere coupling models to address a number of outstanding questions on this phenomenon. Three specific objectives of the proposed project are: (1) Determine the relationship between transpolar arcs and other auroral phenomena that occur simultaneously, such as auroral substorms; (2) Determine the relation of transpolar arcs with ionospheric convection patterns, precipitating particles, and field-aligned currents in both hemispheres; and (3) Investigate the magnetospheric structure and dynamics during transpolar arc evolution.The broader impacts of the project includes graduate student participation and the promotion of women in science.