An empirical model to predict geo-magnetic storms at Earth.

预测地球地磁风暴的经验模型。

• 批准号: 2645882
• 金额: --
• 依托单位: Aberystwyth University
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2645882
• 关键词: empirical; model; predict; geo; magnetic

Predicting space weather has become an important research area today due to its severe effects on near-Earth space. CMEs are the major drivers of space weather. An Earth-directed CME with the southward magnetic field orientation (Bz) can cause geomagnetic storms on Earth. During my PhD , we propose to identify the orientation of Bz at L1 by developing an empirical relation by combining source region magnetic field observations with the in-situ magnetic field observations for the Earth-directed CMEs. To implement this, we aim to use solar surface magnetic field information from instruments SoHO-MDI, SDO-HMI, and in-situ magnetic field measurements in near-Earth environments from magnetometers onboard ACE, and WIND. We will also use GCS fitting for the CMEs observed in the coronagraph images from STEREO-SECCHI, SoHO-LASCO for estimating the better orientation of CME and hence the embedded flux rope just after eruption close to the Sun. Apart from these, we also plan to use PSP and Solar orbiter interplanetary magnetic field and solar wind observations to further improve the model. This could help in forecasting the strength of the geomagnetic storms on Earth and increase our understanding of space weather forecast.

由于空间天气对近地空间的严重影响，空间天气预报已成为当今的一个重要研究领域。CME是空间天气的主要驱动力。一个具有南向磁场方向（Bz）的地球指向CME可以在地球上引起磁暴。在我的博士学位期间，我们建议通过将源区磁场观测与地球定向CME的原位磁场观测相结合来确定Bz在L1的方向。为了实现这一点，我们的目标是使用太阳表面磁场信息从仪器SoHO-MDI，SDO-HMI，并在近地环境中的磁场测量从磁强计板载ACE，和风。我们还将使用GCS拟合从STEREO-SECCHI，SoHO-LASCO的日冕物质抛射图像中观察到的日冕物质抛射，以估计日冕物质抛射的更好方向，从而在靠近太阳的喷发后嵌入通量绳。除此之外，我们还计划利用PSP和太阳轨道器的行星际磁场和太阳风观测来进一步改进模型。这将有助于预测地球上地磁风暴的强度，并增加我们对空间天气预报的了解。