标题： 基于物理的明天1 AU处太阳风预报 显示英文标题

标题： Physics-Based Forecasting of Tomorrow's Solar Wind at 1 AU

摘要： 受狭义相对论中同时性的相对性概念的启发，提出了一种新的方法来模拟内太阳系任意位置未来的太阳风状况。 所提出方法的一个重要特征是，日冕中的模拟由每小时更新的日磁图驱动，并以接近实时的方式连续进行。 内日球层模型基于时间变换到一个增强参考框架（或时空坐标系），在这个框架中，太阳风在日冕-内日球层边界处的当前状态与未来状态是同时的。 通过同时模拟太阳磁场的当前观测值和明天1 AU处背景太阳风参数，实现了预测能力，时间偏移是由于使用了增强框架。 我们推导了流体力学和磁流体力学的修正控制方程，并提出了一种求解修正控制方程的新数值算法。 所提出的方法能够实现高效的数值实现，因此比传统方法具有显著更长的预报时间。 在瞬态传播的数值测试中，CME驱动激波到达1 AU的增强解比在日冕-内日球层边界的解提前16小时。 显示英文摘要

摘要： Inspired by the concept of relativity of simultaneity used in the theory of special relativity, a new approach is proposed to simulate future solar wind conditions at any point in the inner solar system. An important distinctive feature of the proposed approach is that the simulation in the solar corona is driven by hourly updated solar magnetograms and is continuously simulated in nearly real time. The model for the inner heliosphere is based on time transformation to a boosted frame of reverence (or spacetime coordinate system) in which the current state of the solar wind at the solar corona -- inner heliosphere boundary and future states of the solar wind are simultaneous. The predictive capability for tomorrow's parameters of the ambient solar wind at 1 AU is achieved by simulating them simultaneously with the current observations of the solar magnetic field, the time offset being due to the use of boosted frame. We derive the modified governing equations for both hydrodynamics and magnetohydrodynamics and present a new numerical algorithm that solves the modified governing equations. The proposed method enables an efficient numerical implementation and thus a significantly longer forecast time than traditional solution methods. In the numerical test for transient propagation, the boosted solution for the CME-driven shock arrival at 1AU is 16 hours ahead of the solution at the solar corona -- inner heliosphere boundary.