The objective of this paper is the application of a newly developed flux-corrected transport based hydrodynamic solution methodology to the plasmasphere refilling problem following a geomagnetic storm. The flux-corrected transport method is extremely well-suited to the solution of nonlinear partial differential equations with shocks and discontinuities. In this solution methodology, every ion species is modeled as two separate fluids originating from the northern and southern hemispheres. We present refilling results that include three ion (H + , He + , and O + ) species and two neutrals (H and O). We believe that with additional modifications, the model can be adapted to the solution of other ionosphere-magnetosphere coupling problems.
Plain Language SummaryThe paper applies a newly developed multispecies hydrodynamic model to the plasmasphere refilling problem following geomagnetic storms. We believe that with additional development, the model can be applied to other ionosphere-magnetosphere coupling problems.
Key Points:• Developed a hydrodynamic model for the plasmasphere refilling problem following geomagnetic storms • The model is based on the well-known flux-corrected transport method • The model is applied to the plasmasphere refilling problem for three ion species and two neutrals along the L = 4 line Figure 9. (a) Ambipolar electric field profile after 20 min. (b) Ambipolar electric field profile after 2 hr. (c) Ambipolar electric field profile after 15 hr. (d) Ambipolar electric field profile after 40 hr.
The refilling of the plasmasphere following geomagnetic storms remains one of the longstanding and interesting problems in ionosphere-magnetosphere coupling research. The objective of this paper is the formulation and development of a one-dimensional (1D) refilling model using the flux-corrected transport method, a numerical method that is well-suited to handling problems with shocks and discontinuities. In this paper, the developed methodology has been validated against exact, analytical benchmarks, and good agreement has been obtained between these analytical benchmarks and numerical results. The objective of this research is the development of a three-dimensional (3D) multi-ion model for ionosphere-magnetosphere coupling problems in open and closed line geometries.
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