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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Coupling the Rice Convection Model-Equilibrium to the Lyon-Fedder-Mobarry Global Magnetohydrodynamic Model
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Coupling the Rice Convection Model-Equilibrium to the Lyon-Fedder-Mobarry Global Magnetohydrodynamic Model

机译：耦合对流Model-Equilibrium的大米Lyon-Fedder-Mobarry全球磁流体动力模型

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摘要

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.
机译：追求现实的物理模拟等离子体的运输、环电流形成和风暴导致地球磁场和电场在磁层是一个持续的挑战吗物理。耦合的Lyon-Fedder-Mobarry (lem)全球磁流体动力模型与大米对流model-equilibrium (RCM-E)inner-magnetosphere和等离子表。单向耦合方案允许连续更新从等离子体的RCM-E边界条件计算线性调频脉冲,同时保留的时刻熵守恒。高分辨率的自洽的内部磁气圈和描述包括时间的影响outer-magnetospheric电磁场和等离子体配置。RCM-E以这种方式解决的问题等离子体-β受限区域耦合模型LFM-RCM和扩展了RCM-E模拟地区远到等离子体片的storm-time等离子体运输发生。电离层,RCM-E取代了电离层电场模型的线性调频使用的RCM之一。生产,以及现实的电离层降水模式显示了很强的一致性与交通模式的等离子体表与好看泡沫和特色丛发性散装流。一个理想化的事件将会和进行了讨论。

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