NSWP: A New Empirical Model for Prediction of Ground-Level Geomagnetic Perturbations

这是一项为期三年的努力，旨在建立高纬度地面磁场随太阳风和IMF条件变化的模型。这项工作使用了与现有的？魏玛模型?电离层电动力学。在新模型中，标量磁势将与地面磁强计测量结果相匹配。首先，将开发一个静态基线模型。接下来，磁场因太阳风中的突然压力脉冲而受到扰动的动态信息将通过叠加历元分析包括在内，相当于扰动响应分类过程。来自加拿大CARISMA链、格陵兰链和位于弗吉尼亚理工大学的虚拟全球磁观测站的数据集将与ACE卫星的太阳风数据一起使用。这些新模型将在空间科学界广泛应用，并有可能在不久的将来直接有助于改进空间天气预报和/或临近预报。

This is a three-year effort to produce models of the high latitude ground magnetic field variations as function of the solar wind and IMF conditions. The work uses the same technique of spherical harmonic expansion that has been utilized in the existing ?Weimer models? of ionospheric electrodynamics. In the new model the scalar magnetic potential will be matched to ground based magnetometer measurements. First, a static baseline model will be developed. Next, dynamical information where the magnetic field is perturbed due to sudden pressure pulses in the solar wind will be included through a superposed epoch analysis, equivalent to a disturbance-response classification process. Datasets from the Canadian CARISMA chain, the Greenland Chain, and the Virtual Global Magnetic Observatory residing at Virginia Tech will be used together with solar wind data from the ACE satellite. The new models will have widespread utility within the space science community and also has the potential to contribute directly to improved space weather forecasts and/or nowcasts in the near-term future.