GEM: Empirical Modeling of Plasmaspheric Density Distribution and Investigations of Plasmaspheric Dynamic

GEM：等离子体球密度分布的经验模型和等离子体球动力学研究

• 批准号: 0902965
• 负责人: Jiannan Tu
• 金额: $ 30万
• 依托单位: University of Massachusetts Lowell
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-07-15 至 2012-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0902965&HistoricalAwards=false
• 关键词: GEM; Empirical; Modeling; Plasmaspheric; Density

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).This project will develop an empirical model of the plasmasphere electron density distribution. The model will be parameterized by solar wind conditions (interplanetary magnetic field, solar wind speed and density) and by the location within the plasmasphere (radial distance and magnetic local time). The project will use data from IMAGE satellite's Radio Plasma Imager instrument and simulations performed with the Dynamic Fluid-Kinetic model. The empirical model will be used to study plasmaspheric refilling after magnetic storms and the physical mechanisms that couple the plasmasphere to the ionosphere. The empirical model is likely to be of use in the eventual development of a geospace general circulation model (GGCM) which is one of the primary goals of the NSF Geospace Environment Modeling (GEM) program.The Principal Investigator is a recent Ph.D. and will be directing a graduate student and a postdoctoral researcher who is a member of an under-represented group in scientific research.

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。该项目将开发等离子体电子密度分布的经验模型。该模型将根据太阳风条件（行星际磁场、太阳风速度和密度）和等离子体磁层内的位置（径向距离和磁当地时间）进行参数化。该项目将使用IMAGE卫星无线电等离子体成像仪的数据和用动态流体动力学模型进行的模拟。经验模型将用于研究磁暴后等离子体层的再填充以及等离子体层与电离层耦合的物理机制。该经验模型可能用于最终开发地球空间大气环流模型（GGCM），这是NSF地球空间环境建模（GEM）计划的主要目标之一。并将指导一名研究生和一名博士后研究员，他们是科学研究中代表性不足的群体的成员。