Self-consistent modeling of electron precipitation and responses in the ionosphere

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Monday, June 18, 2018

Stan Solomon et al, dicuss a new modeling capability that self-consistently couples physics-based magnetospheric 18 electron precipitation with its impact on the ionosphere, representing a significant improvement over previous models.

Self-consistent modeling image
The time evolution of height-dependent (a) electron density, (b) ionization rate, (c) Pedersen conductivity, and (d) Hall conductivity at MLT = 6 and magnetic latitude of 60 .

Understanding the variability within the near-Earth magnetosphere-ionosphere-thermosphere system is not only a scientific goal but also a critical need for reliable nowcasting and forcasting of hazardous space weather. The system is fully coupled in a variety of ways that challenge our current modeling and observational capabilities. In order to unify the ionospheric and magnetospheric dynamics and their interactions in models, we report a latest modeling effort that self-consistently couples the magnetospheric particle precipitation to its impact on the ionosphere. This model significantly advances the consistency of the models, providing the opportunity to study the 3D ionospheric variability and the transient magnetospheric drivers. With this new tool, we find that earthward particle injections in the magnetosphere result in energetic electron precipitation with 10

Author's Name: Stanley C. Solomon; Publication Name: J. Geophys Res. Space Physics