NSWP: Space Weather Event Modeling of Plasma Injection in the Inner Magnetosphere

NSWP：内磁层等离子体注入的空间天气事件模型

• 批准号: 0720309
• 负责人: Stanislav Sazykin
• 金额: $ 33万
• 依托单位: William Marsh Rice University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-08-01 至 2010-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0720309&HistoricalAwards=false
• 关键词: NSWP; Space; Weather; Event; Modeling

The proposed research will perform simulations of the inner magnetosphere for a variety of well-observed events and compare the output with a suite of both remote and in situ measurements. The simulations will be done using the latest version of the Rice Convection Model (RCM). The motivations are twofold: 1) understand better the central importance of the transfer of depleted plasma sheet flux tubes into the inner magnetosphere; and 2) incorporate this improved understanding into the computational machinery of the RCM in order to enhance and evaluate its use as a practical tool for representing space weather. In addition, the proposed research will serve as a thorough validation of recent significant modifications to the RCM, including but not necessarily limited to the inclusion of magnetic flux tube interchange effects, dipole tilt and the ability to operate with a much broader range of magnetic field configurations. The recent improvements to the RCM also include a simple data assimilation scheme for operational use that ensures model electron fluxes are consistent with available geosynchronous spacecraft data. At the end of the project, the fully validated RCM will be made available to the space science community, either through the Community Coordinated Modeling Center or through Rice University. The project also includes an educational impact through the support of a postdoctoral researcher and a graduate student.

拟议的研究将对内部磁层的各种观测良好的事件进行模拟，并将输出与一系列远程和现场测量进行比较。模拟将使用最新版本的水稻对流模型（RCM）进行。 动机有两个：1）更好地理解将耗尽的等离子体片通量管转移到内部磁层的核心重要性； 2) 将这种改进的理解纳入 RCM 的计算机制中，以增强和评估其作为代表空间天气的实用工具的用途。此外，拟议的研究将彻底验证最近对 RCM 的重大修改，包括但不一定限于磁通量管交换效应、偶极子倾斜以及在更广泛的磁场范围内运行的能力配置。 RCM 的最新改进还包括用于操作使用的简单数据同化方案，确保模型电子通量与可用的地球同步航天器数据一致。项目结束时，经过全面验证的 RCM 将通过社区协调建模中心或莱斯大学提供给空间科学界。 该项目还包括通过博士后研究员和研究生的支持产生的教育影响。