Modelling the solar wind from the Sun to Earth's orbit: new empirical constraints and time-dependent boundary conditions

该项目通过应用于日冕仪（和其他）数据的新颖和独特的分析方法，旨在改进对地球上静止太阳风和潜在危险空间天气条件的预测。弹道太阳风模型将受到新的经验边界条件的约束，在这一点上，太阳风流已经变成径向。在R~6Rs的边界条件的应用是该项目所独有的，它允许对目前高度不确定的太阳风特性（如加速度）进行有意义的研究。空间天气预报的改进主要取决于三个相关的类别：(1)更好地观测太阳、日冕和太阳风；(2)对日冕和太阳风的物理过程有了更深入的了解；(3)数据分析和预测方法的改进。提议的工作属于第三类，并有助于其他两类。

This project, through novel and unique analysis methods applied to coronagraph (and other) data, aims to improve the forecasting of the quiescent solar wind and potentially hazardous space weather conditions at Earth. A ballistic solar wind model will be constrained by novel empirical boundary conditions at a point where the solar wind flow has already become radial. The application of boundary conditions at R~6Rs is unique to this project and allows the meaningful study of solar wind characteristics which are currently highly uncertain, such as acceleration. Improvements in space weather forecasting depend primarily on three related categories: (1) Better observations of the Sun, corona, and solar wind; (2) Greater understanding of the physical processes operating in the corona and solar wind; (3) Improvements in data analysis and forecasting methods. The proposed work belongs to the third category and contributes to the other two.