HR: 0830h
AN: SA21B-0078    [PDF]
TI: Examing the Effects of Different IMF, F10.7, and Auroral Inputs on the Thermospheric Neutral Winds
AU: * Deng, Y
EM: ydeng@umich.edu
AF: University of Michigan, 2455 Hayward, Ann Arbor, MI 48109-2143 United States
AU: Ridley, A J
EM: ridley@umich.edu
AF: University of Michigan, 2455 Hayward, Ann Arbor, MI 48109-2143 United States
AB: To obtain a better understanding of how the magnetosphere effects the global thermospheric and ionospheric structure, we conduct some numerical experiments using the University of Michigan's Global Ionosphere-Thermosphere Model (GITM). We have run GITM to roughly steady-state using different strengths of the high-latitude electric potential pattern, F10.7, and auroral inputs to determine how these effect the temporal history and stead-state of the thermospheric neutral winds. Our model reproduces the well known fact that the neutral winds are strongly driven by the ion convection above approximately 300 km, and that the ramp-up time is very dependent upon the altitude. We show quantitative results of the ramp-up times and maximum neutral wind speeds for the different driving conditions.
DE: 2427 Ionosphere/atmosphere interactions (0335)
DE: 2431 Ionosphere/magnetosphere interactions (2736)
SC: SPA - Aeronomy [SA]
MN: 2003 Fall Meeting