Analyses of Active Region Characteristics Responsible for Solar Eruptive Events on the Basis of Observations with the Aid of Three-Dimensional Magnetohydrodynamic Simulation

基于观测并借助三维磁流体动力学模拟分析太阳喷发事件的活动区特征

• 批准号: 1153323
• 负责人: Shi Wu
• 金额: $ 33.9万
• 依托单位: University of Alabama in Huntsville
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-03-01 至 2016-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1153323&HistoricalAwards=false
• 关键词: Analyses; Active; Region; Characteristics; Responsible

The Principal Investigator (PI) and his research team will analyze magnetic structures in the solar atmosphere before, during, and after solar eruptive events to determine the physical conditions that are required for solar active region eruptions. The PI's team will use solar vector magnetogram observations from ground-based and space-based platforms, along with a three-dimensional, data-driven, magnetohydrodynamic (MHD) model of active region evolution, to investigate these sources and drivers of solar eruptive activity. The PI's data-driven MHD model has been recently improved and enhanced to better impose self-consistent, time-dependent boundary conditions at the solar surface, in order to correctly input the observed changing photospheric vector magnetogram measurements. The effects of sub-photospheric convective zone dynamics are directly reflected through these surface boundary conditions.This investigation will provide the space weather modeling community with an improved physics-based solar eruption initiation model and could potentially lead to better operational space weather forecasts. Graduate students will be involved throughout this research program, as well as a summer intern student and an advising professor from Alabama A&M University (AAMU, a historically black college). The unfunded collaborating professor at AAMU will actively recruit minority graduate students to work on this project and will participate in training these students in the use of the University of Alabama's solar active region evolution model.

首席研究员（PI）和他的研究团队将分析太阳大气中的磁结构之前，期间和之后的太阳爆发事件，以确定太阳活动区爆发所需的物理条件。PI的团队将使用来自地面和空间平台的太阳矢量磁图观测，沿着活动区域演化的三维数据驱动磁流体动力学（MHD）模型，以调查这些太阳爆发活动的来源和驱动因素。PI的数据驱动的MHD模型最近得到了改进和增强，以更好地在太阳表面施加自洽的、随时间变化的边界条件，以便正确地输入观测到的不断变化的光球矢量磁图测量值。次光球对流区动力学的影响直接通过这些表面边界条件反映出来，这项调查将为空间天气建模界提供一个改进的基于物理学的太阳喷发起始模型，并有可能导致更好的业务空间天气预报。研究生将参与整个研究计划，以及暑期实习生和来自亚拉巴马A M大学（AAMU，一所历史悠久的黑人大学）的顾问教授。AAMU没有资金的合作教授将积极招募少数民族研究生从事这一项目，并将参与培训这些学生使用亚拉巴马大学的太阳活动区演变模型。