AGS-PRF: Development of a Data Assimilation Model for the Plasmasphere

AGS-PRF：等离子体圈数据同化模型的开发

• 批准号: 1231207
• 负责人: Romina Nikoukar
• 金额: $ 17.2万
• 依托单位: Nikoukar, Romina
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-01 至 2014-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1231207&HistoricalAwards=false
• 关键词: AGS; PRF; Development; Data; Assimilation

This is an inter-disciplinary project to expand existing ionospheric data assimilation techniques to develop a new state-of-the-art imaging and data assimilation technique for the plasmasphere. It will use a variety of observations of plasmaspheric densitites to produce time-evolving maps of the electron density i nthe plasmasphere. These maps will then be fed into first-principles models of the plasmaspehre to produce corrected and improved characterisations and predictions of plasmasphere dynamics. The method will be tested and validated via simulations. Finally, the technique will be used on real GPS and in-situ measurements to address questions of ionosphere-plasmasphere coupling through refilling and erosion, and for characterizations of plasmasphere plumes. The work will be carried out at Augsburg College under the mentorship of Dr. Murr and in collaboration with Dr. Bust of Atmospheric & Space Technology Research Associates and Dr. Huba of the Space Physics Section at the Naval Research laboratory. The project will involve undergraduate students at Augsburg College. The project will produce a practical methodology to predict the state of the plasmasphere more accurately and more efficiently. Plasmasphere dynamics is an important ingredient in understanding space weather effects in the ionosphere. Therefore, the new model will help improve our space weather forecasting capabilities.

这是一个跨学科项目，旨在扩大现有的电离层数据同化技术，为等离子体探测器开发一种新的最先进的成像和数据同化技术。 它将利用对等离子体层密度岩的各种观测来制作等离子体层中电子密度随时间变化的地图。 然后，这些地图将被输入等离子体磁的第一原理模型，以产生校正和改进的等离子体磁动力学的表征和预测。 该方法将通过模拟进行测试和验证。 最后，该技术将用于真实的全球定位系统和现场测量，以解决电离层-等离子体通过再填充和侵蚀耦合的问题，并用于等离子体羽流的特征。这项工作将在奥格斯堡学院进行，由穆尔博士指导，并与大气空间技术研究协会的布斯特博士和海军研究实验室空间物理科的胡巴博士合作。 该项目将涉及奥格斯堡学院的本科生。 该项目将产生一种实用的方法，以更准确和更有效地预测等离子体的状态。等离子体电离层动力学是了解电离层空间气象效应的一个重要组成部分。 因此，新模型将有助于提高我国空间天气预报能力。