SHINE: A Time-Dependent Solar Wind 3D-MHD Model Interface Using Interplanetary Scintillation (IPS) Observations

SHINE：使用行星际闪烁 (IPS) 观测的时间相关太阳风 3D-MHD 模型接口

• 批准号: 1358399
• 负责人: Bernard Jackson
• 金额: $ 34.34万
• 依托单位: University of California-San Diego
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-07-01 至 2017-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1358399&HistoricalAwards=false
• 关键词: SHINE; Time; Dependent; Solar; Wind

The main goal of this 3-year SHINE project is to apply the tomographic analysis to heliospheric data from available remote-sensing observations of interplanetary scintillation (IPS), archival white-light observations from SMEI (Solar Mass Ejection Imager), and extend this technique to the HI-2 (Heliospheric Imager-2) instruments onboard the STEREO spacecraft. This research effort will allow the project team to discover the differences between their own robust measurements of the kinematic propagation of these parameters near the Earth and the physical processes governing the propagation of features from near the solar surface using three-dimensional (3D) magnetohydrodynamic (MHD) models. The project contributes to broader societal activities, such as advancing the participation of women in science and improving the scientific literacy of the general public. The project team will present the results of this research project at national scientific meetings and will publish them in peer-reviewed scientific journals. The research and EPO agenda of this SHINE project supports the Strategic Goals of the AGS Division in discovery, learning, diversity, and interdisciplinary research.The research agenda of this SHINE project consists of four main tasks, namely: (i) compare the University of California in San Diego (UCSD) tomographic modeling with MHD modeling to learn the physical differences between these two very different types of remote sensing analyses; (ii) pursue inter-comparison of 3D MHD modeling techniques that all use the same boundary conditions in order to learn the best physical parameters needed to propagate time-dependent structures; (iii) perform analysis of these interplanetary structures in order to determine and provide the lacking magnetic field inputs required for the tomographic kinematic model propagation; and, (iv) perform new analyses using iterative 3D MHD codes that refine remote sensing observations from solar heliospheric observations and IPS measurements. The outcome of this research project is expected to yield new improved boundary inputs, based on multiple data sets (that incorporate both remote-sensing observations and in-situ measurements), for various 3D MHD models, and especially for Space Weather models, and an analysis that displays the global properties of heliospheric structures. The project would provide new physical insight on "the solar cycle dependence of CMEs, including their propagation through and their interaction with the background solar wind, including the linking of interplanetary and near-Sun phenomena," as stated in the goals of the NSF's SHINE program.

这个为期3年的SIRE项目的主要目标是将层析分析应用于现有的行星际闪烁遥感观测的日球层数据、太阳质量抛射成像仪(SMEI)的存档白光观测，并将这一技术推广到STEREO航天器上的HI-2(日球层成像器-2)仪器。这项研究工作将使项目组能够发现他们自己对这些参数在地球附近的运动传播的可靠测量与使用三维(3D)磁流体动力学模型控制从太阳表面附近传播特征的物理过程之间的差异。该项目有助于更广泛的社会活动，如促进妇女参与科学和提高公众的科学素养。项目组将在国家科学会议上介绍这一研究项目的成果，并将在同行评议的科学期刊上发表。这一SHARE项目的研究和EPO议程支持AGS部门在发现、学习、多样性和跨学科研究方面的战略目标。该SHARE项目的研究议程包括四个主要任务，即：(I)比较加州大学圣地亚哥分校(UCSD)的层析建模和MHD建模，以了解这两种非常不同类型的遥感分析之间的物理差异；(Ii)研究使用相同边界条件的3D MHD建模技术的相互比较，以了解传播随时间变化的结构所需的最佳物理参数；(3)对这些行星际结构进行分析，以确定并提供层析运动学模型传播所需的缺乏磁场输入；以及(4)使用迭代三维磁流体层分析代码进行新的分析，该代码改进了来自太阳日光层观测和IPS测量的遥感观测。这一研究项目的成果预计将根据多种数据集(包括遥感观测和现场测量)、各种三维MHD模型，特别是空间天气模型，以及显示日光层结构的全球性质的分析，产生新的改进的边界投入。该项目将提供关于“日冕物质抛射对太阳周期的依赖，包括它们通过背景太阳风的传播及其与背景太阳风的相互作用，包括星际现象和近太阳现象之间的联系”的新的物理见解，正如美国国家科学基金会的光辉计划的目标所述。