Jiuhou Lei

TL;DR: In this article, a coupled magnetosphere ionosphere thermosphere (CMIT 2.0) model has been developed, which is capable of self-consistently calculating global ionospheric electric fields that include the imposed magnetospheric convection field, neutral wind dynamo and penetration electric fields.

TL;DR: In this paper, the CHAMP satellite was used to investigate oscillations at periods of less than 13 days during the declining phase of solar cycle 23 (2002-2007), and the periodic oscillations around 7 and 9 days in neutral density tend to occur during the latter part of the declining solar cycle when periodically recurrent fast streams in the solar wind modulate the level of geomagnetic activity in the geospace environment.

TL;DR: In this article, the authors investigated the long-duration positive ionospheric storm effect that occurred on 15 December 2006 using a combination of ground-based Global Positioning System (GPS) total electron content (TEC), TOPEX and Jason-1 TEC, and topside ionosphere/plasmasphere TEC.

TL;DR: In this article, the authors showed that the IEF pulses can penetrate into the ionosphere without shielding, in other words, they may exhibit the "shielding immunity", and the averaged penetration efficiency is about 0.136 and highly local time-dependent.

TL;DR: In this paper, the authors studied the response of the upper atmosphere to high-speed CIRs and found that the response is larger at night than in daytime, indicating the preconditioning effect of the thermosphere response to storms.