Collaborative Research: Comprehensive Corona and Heliosphere Model (CCHM)

合作者打算开发和维护一个基于第一性原理的综合数字代码，称为综合日冕和日光层模型（CCHM）。该模型将模拟缓慢变化的日冕和周围太阳风的三维时变结构和动态，并将以空间气象建模框架为基础，这是密歇根大学开发的一种灵活的高性能计算工具。使用CCHM，建议团队将与社区协调建模中心（CCMC），NOAA空间环境中心（SEC）和太阳-日光层社区合作，扩展可用的物理模型，帮助研究人员使用新功能，验证单个模型，并计算预测技能得分。CCHM模型的主要功能将是：㈠对日冕和日光层在任何特定时刻的大尺度结构和性质进行三维定量描述; ㈡将现有和即将提供的视线光球磁场数据以及矢量磁场观测数据作为模型输入; ㈢能够引发简单的瞬变以及复杂的磁驱动太阳爆发; ㈣预测随时间变化的太阳风参数和某一点或某一物体的高能粒子环境（五）充分的模块化，以纳入包含新的或更复杂的物理学的例行程序;（vi）一个用户友好的门户网站，用于创建、提交、监测和分析模型运行（包括图形）; ㈦在合理的计算资源上具有比实时更快的能力，从而具有快速周转运行的灵活性;（viii）以“管道模式”连续运行和描述太阳磁场连续拓扑变化的能力（只要太阳和日光层观测台/迈克尔逊多普勒成像仪（SoHO/MDI）、太阳天气光学长期调查（SOLIS）、最终太阳动力学天文台/日震和磁成像仪（SDO/HMI）可用）。主要研究者打算在整个项目生命周期内积极评价和确认CCHM。

The collaborators here intend to develop and maintain a first-principles-based comprehensive numerical code, to be called the Comprehensive Corona and Heliosphere Model (CCHM). The CCHM will simulate the 3D time-dependent structure and dynamics of the slowly varying corona and the ambient solar wind, and it will be based on the Space Weather Modeling Framework, a flexible high-performance computational tool developed at the University of Michigan. Using the CCHM, the proposing team will expand available physics models, assist researchers in using new capabilities, validate individual models, and calculate prediction skill scores, in partnership with the Community Coordinated Modeling Center (CCMC), NOAA Space Environment Center (SEC), and the Solar-Heliospheric Community.The main features of the CCHM model will be: (i) a 3D quantitative description of the large scale structure and properties of the corona and the heliosphere at any given instant in time; (ii) the incorporation of presently available and forthcoming line-of-sight photospheric magnetic field data, as well as vector magnetic field observations, as model input; (iii) the ability to initiate simple transients, as well as sophisticated magnetically-driven solar eruptions; (iv) predictions of time-dependent solar wind parameters and the energetic particle environment at a point or an object (Earth, Mars, spacecraft) in space; (v) sufficient modularity to incorporate routines containing new or more sophisticated physics; (vi) a user-friendly web portal to create, submit, monitor, and analyze model runs (including graphics) by the general research community; (vii) faster-than-real-time capability on reasonable computational resources, yielding the flexibility for quick-turn-around runs; (viii) the ability to run continuously in a 'pipeline mode' and to describe continuous topological changes of the solar magnetic field (as long as continuous data streams from Solar and Heliospheric Observatory/Michelson Doppler Imager (SoHO/MDI), Synoptic Optical Long-term Investigations of the Sun (SOLIS), and eventually Solar Dynamics Observatory/Helioseismic and Magnetic Imager (SDO/HMI) are available). The Principal Investigators intend to be active in evaluating and validating the CCHM throughout the lifetime of the project.