SHINE: Collaborative Research: Time-dependent coupling of the solar corona and inner heliosphere: Interfacing LFM-helio with MAS

SHINE：合作研究：日冕和内日光层的时间依赖性耦合：LFM-helio 与 MAS 的接口

• 批准号: 1260388
• 负责人: Jon Linker
• 金额: $ 10.9万
• 依托单位: Predictive Science Incorporated
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-09-01 至 2017-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1260388&HistoricalAwards=false
• 关键词: SHINE; Collaborative; Research; Time; dependent

This proposal seeks funding for the development and validation of a new sophisticated numerical model that would follow Coronal Mass Ejections (CMEs) from their birth in the solar corona, through interactions with the ambient solar wind, and out to 1 AU. The finished model will combine two established, well-recognized codes, "MAS" (MHD Around a Sphere) to model the solar corona out to about 30 solar radii and "LFM Helio," an adaptation of the LFM code originally developed for magnetospheric simulations, that would follow the propagation out to 1 AU. Specific tasks to be completed include: 1) Steady-state MAS/LFM-helio coupling to obtain the ambient solar wind configuration throughout the corona and inner heliosphere prior to CME initiation; 2) Time-dependent coupling allowing seamless propagation of the CME structure through the interface between the coronal and inner heliosphere domains located at ∼ 30 RE; 3) Vetting of the resultant coupled model by performing corona-inner heliosphere simulations, investigations of CME interaction with the ambient solar wind and each other, and comparisons with heliospheric imaging.If a major CME was to hit the earth it could have major consequences on everything from GPS satellites to the terrestrial power grid. Hence, understanding how CMEs propagate from the Sun to the Earth is perhaps the most important aspect of space weather forecasting. A female PhD student would be trained under this project.

该提案寻求资金来开发和验证新的复杂数值模型，该模型将遵循冠状质量弹出（CMES），从其在太阳能电晕诞生，通过与环境太阳能风的互动，并以1 au为单位。 最终的模型将结合两个已建立的，公认的代码“ MAS”（围绕一个球体的MHD），以将太阳能电晕建模为大约30个太阳RADII和“ LFM HELIO”，这是针对磁层模拟开发的LFM代码的改编，该代码将遵循传播为1 au。 要完成的特定任务包括：1）稳态MAS/LFM-螺旋耦合，以在CME启动之前在整个电晕和内部地球层上获得环境太阳风结构； 2）时间依赖性耦合，允许通过位于＆＃8764的冠状动脉和内层域之间的界面之间的界面无缝传播CME结构； 30 RE; 3）通过执行电晕内的Heliosphere模拟，对CME与环境太阳风相互作用的研究以及彼此之间的相互作用进行审查，并与Heliospheric成像进行比较。如果主要的CME击中了地球，则可以对GPS卫星到地层电源的一切产生重大影响。因此，了解CME如何从太阳传播到地球可能是太空天气预测的最重要方面。 在这个项目下，将对一名女博士生进行培训。