Zhang, Q.-H., Y. Zhang, C. Wang, M. Lockwood, H.-G. Yang, B. Tang, Z.-Y. Xing, K. Oksavik, L. R. Lyons, Y.-Z. Ma, Q. Zong, J. Moen, and L. Xia, Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth’s magnetotail, AGU Fall Meeting, Online, 1-17 December, 2020 (Invited talk)