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.

这项拟议的研究将对各种观测良好的事件的内部磁层进行模拟，并将结果与一套远程和现场测量结果进行比较。模拟将使用最新版本的赖斯对流模型(RCM)进行。其动机有两个：1)更好地了解将耗尽的等离子体薄片通量管转移到内磁层的核心重要性；2)将这一更好的理解纳入区域气象中心的计算机制，以加强和评估其作为表示空间气象的实用工具的使用。此外，拟议的研究将彻底验证最近对RCM的重大修改，包括但不一定限于包括磁通管互换效应、偶极倾斜和在更广泛的磁场配置范围内运行的能力。RCM最近的改进还包括一个用于业务用途的简单数据同化计划，该计划确保模型电子通量与现有的地球同步航天器数据保持一致。在项目结束时，将通过社区协调建模中心或通过莱斯大学向空间科学界提供经过充分验证的RCM。该项目还包括通过一名博士后研究员和一名研究生的支持对教育产生影响。