The pursuit of realistic simulation of the physics of plasma transport, ring current formation and storm-triggered Earth magnetic and electric field is an ongoing challenge in magnetospheric physics. To this end, we have implemented a coupling of the Lyon-Fedder-Mobarry (LFM) global magnetohydrodynamic model with the Rice convection model-equilibrium (RCM-E) of the inner-magnetosphere and plasma sheet. This one-way coupling scheme allows continuous update of the RCM-E boundary conditions from the plasma moments calculated by the LFM while preserving entropy conservation. This results in a model that has the high-resolution self-consistent description of the inner magnetosphere and includes the effects of time-dependent outer-magnetospheric electromagnetic fields and plasma configurations. In addition, driving the RCM-E in this way resolves the issue of having a plasma-β-constrained region in the coupled model of LFM-RCM and expands the RCM-E simulation region farther out into plasma sheet where the storm-time plasma transportation takes place. In the ionosphere, the RCM-E replaces the ionospheric electric field model of LFM with the one used by the RCM. The electric potential produced, along with the realistic ionospheric precipitation patterns shows strong consistency with the transportation patterns in the plasma sheet featured with well-resolved bubbles and bursty bulk flows. Results from the simulations of an idealized event will be presented and discussed.

中文翻译：

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将水稻对流模型-平衡耦合到 Lyon-Fedder-Mobarry 全球磁流体动力学模型

追求对等离子体传输、环流形成和风暴触发的地球磁场和电场物理的真实模拟是磁层物理学中的一个持续挑战。为此，我们实现了 Lyon-Fedder-Mobarry (LFM) 全球磁流体动力学模型与内部磁层和等离子体片的 Rice 对流模型平衡 (RCM-E) 的耦合。这种单向耦合方案允许从 LFM 计算的等离子体矩连续更新 RCM-E 边界条件，同时保持熵守恒。这产生了一个模型，该模型具有内磁层的高分辨率自洽描述，并包括与时间相关的外磁层电磁场和等离子体配置的影响。此外，LFM-RCM 耦合模型中的β约束区域，并将 RCM-E 模拟区域进一步扩展到发生风暴时间等离子体传输的等离子体片中。在电离层中，RCM-E 用 RCM 使用的模型代替了 LFM 的电离层电场模型。产生的电势以及真实的电离层降水模式与等离子体片中的传输模式具有很强的一致性，这些模式具有解析良好的气泡和爆裂的体积流。将介绍和讨论理想化事件的模拟结果。