论文标题
电离层对流来源的分离和定量：2。偶极子倾斜角对北部IMF期间反向对流电池的影响
Separation and Quantification of Ionospheric Convection Sources: 2. The Dipole Tilt Angle Influence on Reverse Convection Cells During Northward IMF
论文作者
论文摘要
本文研究了北半部IMF期间北半球电离层中地球偶极倾斜角对反流电池（有时称为叶细胞）的影响，我们与高纬度重新连接有关。 2010 - 2016年的超级双极光雷达网络网络漂移观测用于量化电离层对流。一种基于球形基本对流系统（SEC）的新技术，该技术用于我们的同伴论文（Reistad等，2019，https：//doi.org/10.1029/2019JA026634）用于隔离和量化反向对流单元。我们发现偶极倾斜角对反向细胞电位具有线性影响。在北半球，夏季反向电池电位通常比冬季高两倍。这种变化被解释为由于偶极倾斜的方向而导致的行星际磁场重新连接速率的变化。因此，偶极倾斜对反电离层对流的影响可能是对V（o $ _ {sw} $）b（o $ _ {z {z} $）的更为已知影响的重大修改。这些结果可以由科学界用作LOBE重新连接耦合功能的关键输入参数。
This paper investigates the influence of Earth's dipole tilt angle on the reverse convection cells (sometimes referred to as lobe cells) in the Northern Hemisphere ionosphere during northward IMF, which we relate to high-latitude reconnection. Super Dual Auroral Radar Network plasma drift observations in 2010-2016 are used to quantify the ionospheric convection. A novel technique based on Spherical Elementary Convection Systems (SECS) that was presented in our companion paper (Reistad et al., 2019, https://doi.org/10.1029/2019JA026634) is used to isolate and quantify the reverse convection cells. We find that the dipole tilt angle has a linear influence on the reverse cell potential. In the Northern Hemisphere the reverse cell potential is typically two times higher in summer than in winter. This change is interpreted as the change in interplanetary magnetic field-lobe reconnection rate due to the orientation of the dipole tilt. Hence, the dipole tilt influence on reverse ionospheric convection can be a significant modification of the more known influence from v(O$_{sw}$)B(O$_{z}$). These results could be adopted by the scientific community as key input parameters for lobe reconnection coupling functions.
