Space Weather: Global MHD Simulations and Data Comparisons Addressing Key Questions of Substorm Dynamics

空间天气：全球 MHD 模拟和数据比较解决亚暴动力学的关键问题

• 批准号: 9713449
• 负责人: Robert McPherron
• 金额: $ 21.6万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-09-01 至 2001-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9713449&HistoricalAwards=false
• 关键词: Space; Weather; Global; MHD; Simulations

The investigators will use a global circulation model of the Earth's magnetosphere to study key aspects of substorms and their global consequences. The methodology is to use solar wind data as input to the simulation model and critically compare the results with observations in the magnetosphere and ionosphere. By combining simulation results with observational data, the investigators will overcome the limited spatial and temporal resolution of observations and be able to produce accurate, high resolution synoptic maps of the magnetosphere and ionosphere. With these maps the investigators will study key issues of substorm research, such as the detailed topology of substorm current systems and the timing of substorm signatures. The research will lead to a better understanding of geomagnetic activity and substorms and aid in the development of improved space weather predictions.

研究人员将使用地球磁层的全球环流模型来研究亚暴的关键方面及其全球后果。方法是使用太阳风数据作为模拟模型的输入，并将结果与磁层和电离层的观测结果进行严格比较。通过将模拟结果与观测数据相结合，研究人员将克服观测的有限空间和时间分辨率，并能够生成精确的、高分辨率的磁层和电离层天气图。有了这些地图，研究人员将研究亚风暴研究的关键问题，如亚风暴电流系统的详细拓扑结构和亚风暴特征的时间。这项研究将有助于更好地了解地磁活动和亚暴，并有助于改进空间天气预报的发展。