A magnetodisc model service for planetary space weather studies

A magnetodisc model service for planetary space weather studies
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用于行星空间天气研究的磁盘模型服务

DOI:
10.1051/swsc/2019022
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发表时间:
2019
影响因子:
3.3
通讯作者:
Achilleos N
Achilleos N
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Achilleos N

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理论模型在欧洲行星网的行星空间气象服务中发挥着重要作用,因为它们能够预测磁层环境对上游太阳风流的压缩或稀薄的物理响应。我们通过介绍UCL磁盘模型在“木星”和“土星”模式下的一些计算实例来说明这一方面。现在可以通过PSWS MAGNETODISC服务提供类似的模型输出。对于每个行星的空间环境,我们提供了示例模型输出,展示了压缩和稀薄对全球磁场、等离子体压力和方位向电流密度的影响。作为这些参考模型背后的物理基础的简单说明,我们通过将“压缩”和“扩展”的输出与标称的“平均状态”模型进行比较来量化太阳风的影响,该模型反映了更典型的太阳风动态压力。我们还描述了相应的PSWS MAGNETODISC服务的实现,潜在用户可以通过该服务获得类似的输出。
Theoretical models play an important role in the Planetary Space Weather Services (PSWS) of the European Planetary Network (“Europlanet”), due to their ability to predict the physical response of magnetospheric environments to compressions or rarefactions in the upstream solar wind flow. We illustrate this aspect by presenting examples of some calculations done with the UCL Magnetodisc Model in both “Jupiter” and “Saturn” mode. Similar model outputs can now be provided via the PSWS MAGNETODISC service. For each planet’s space environment, we present example model outputs showing the effect of compressions and rarefactions on the global magnetic field, plasma pressure and azimuthal current density. As a simple illustration of the physics underlying these reference models, we quantify solar wind effects by comparing the “compressed” and “expanded” outputs to a nominal “average-state” model, reflecting more typical solar wind dynamic pressures. We also describe the implementation of the corresponding PSWS MAGNETODISC Service, through which similar outputs may be obtained by potential users.
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