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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Analysis of the magnetic field discontinuity at the potential field source surface and Schatten Current Sheet interface in the Wang–Sheeley–Arge model
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Analysis of the magnetic field discontinuity at the potential field source surface and Schatten Current Sheet interface in the Wang–Sheeley–Arge model

机译：磁场的分析不连续势场源表面和Schatten电流片Wang-Sheeley-Arge接口模型

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摘要

The Wang–Sheeley–Arge solar wind model makes use of coupled potential field source surface (PFSS) and Schatten Current Sheet (SCS) models to reconstruct the coronal magnetic field on the basis of the observed line-of-sight photospheric magnetic field and a 1D kinematic code to propagate the solar wind to 1 AU. The source surface serves as the outer boundary of the PFSS model and the inner boundary of the SCS model. Known discontinuities arise in the tangential components of the magnetic field across this surface owing to differences in the imposed boundary conditions (Wang et al., 1998). Here we introduce a more flexible coupling between the two models, which considerably reduces the discontinuous behavior of the magnetic field across the model interface surface, to investigate the effects and importance of these kinks on the accuracy of the model's solar wind speed predictions at 1 AU. A detailed analysis of select Carrington rotations shows that removing the kinks can lead to changes in connectivity, creating different source regions for the solar wind. These changes lead to significantly improved predictions of solar wind structures at 1 AU some of the time, but most of the time, the kinks do not affect the predicted solar wind speed. This improvement is born out statistically by increases in the prediction skill scores of both solar wind velocity (1.7%) and interplanetary magnetic field polarity (1.4%) at 1 AU.
机译：Wang-Sheeley-Arge太阳风模型利用耦合势场源表面(pfs)和Schatten电流片(SCS)模型重建的日冕磁场观察到的视线photospheric的基础磁场和1 d运动代码传播1 AU的太阳风。表面是pfs的外边界模型和SCS模型的内边界。已知的切向间断出现在这个组件的磁场表面由于差异边界条件(王et al ., 1998)。引入一个更灵活的耦合两个模型,大大降低了不连续的磁场整个模型接口表面,调查的影响和重要性缺陷模型的准确性的太阳风1 AU速度预测。选择卡灵顿旋转显示删除缺陷可以导致连接发生变化,创建不同地区太阳能的来源风。改进的预测在太阳风结构1非盟的一些时间,但大多数时候,缺陷不影响预测的太阳风速度。通过预测技能分数的增加太阳风速度(1.7%)和行星际磁场极性(1.4%)

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