Collaborative Research: SHINE: The Geometrical and Kinematic Evolution of Interplanetary Coronal Mass Ejections

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。这个合作小组计划调查距离太阳很远的行星际日冕物质抛射(ICME)的演化。他们希望找出现有模型不能准确描述ICME演变的原因。有了这方面的知识，首席调查员将能够用修正的边界条件改进这些模型，或者开发一个新的模型来描述国际海洋生态系统的几何和运动学演化。然后，该团队将评估他们产生的模型作为空间天气预报的工具。这项工作涉及详细分析日冕仪和星际数据、EUV图像以及各种航天器上的仪器的现场观测，这些航天器包括SOHO、STEREO、ACE、科里奥利、WIND和Ulysses。合作者已经设计了一个新的数据驱动模型，能够从负责CME演化的人(如与周围星际介质的相互作用、CME的扩展和MHD物理)中提取与CME起源相关的参数(如相对几何形状和汤姆森散射强度)。因此，主要负责人期望完成对日冕物质抛射的3D性质的第一次调查，并能够对日冕物质抛射的出现和演化负责的参数进行分类和比较。第一名是NRC研究员，第二名是一名女科学家，最近是一名出色的博士后。这个项目对这两位有前途的年轻科学家在职业生涯之初的职业发展非常重要。他们的联合项目提供了一个机会，以提高我们对行星际介质中CME演化的总体理解，以及空间天气预报能力。该团队的新ICME模型将解决SISH科学目标，并提高空间天气预报的准确性。

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).This collaborative team plans to investigate the evolution of interplanetary coronal mass ejections (ICMEs) at large distances from the Sun. They expect to identify the reasons that existing models do not accurately describe this ICME evolution. With this knowledge, the principal investigators (PI) will either be able to improve these models with corrected boundary conditions, or develop a new model describing the geometrical and kinematic evolution of ICMEs. The team then will evaluate their resulting model as a tool for space weather forecasting. This work involves the detailed analysis of coronagraph and interplanetary data, EUV images, and in situ observations from instruments on a variety of spacecraft, including SOHO, STEREO, ACE, Coriolis, WIND, and Ulysses. The collaborators have already devised a new data-driven model with the ability to extract parameters related to CME origins (such as relative geometry and Thomson scattered intensity) from those responsible for CME evolution (such as interactions with surrounding interplanetary medium, expansion of the CME, and MHD physics). The PIs thus expect to complete the first survey of the 3D properties of CMEs and allow the classification and comparison of the parameters responsible for CME appearance and evolution. The lead PI is an NRC Fellow while the secondary PI is a female scientist and recent SHINE postdoc. This project is important for the career development of these two promising young scientists at the beginning of their careers. Their joint project offers an opportunity to improve our general understanding of CME evolution in the interplanetary medium, as well as space weather prediction capabilities. The team's new ICME model will address SHINE science goals and improve the accuracy of space weather forecasts.