GEM: Access and Interface to Global Magnetosphere-Ionosphere Model

该项目的目的是实施全球地球空间环流模型的第一阶段。 GGCM的发展是GEM（地球空间环境建模）计划的主要目标。 GGCM开发的第一阶段旨在为用户群体提供选定的一组理想化IMF和太阳风动压条件的详细模拟结果。 拟模拟的条件由GGCM指导委员会选定。 UCLA MHD代码将用于生成特定条件下的模型，以及GEM计划选择用于特殊研究的单个事件的模型。 加州大学洛杉矶分校的MHD代码已经开发和测试，并已被证明产生一些具体的事件研究的现实结果。 该程序将模拟委员会选择的所有IMF和太阳风动压条件，此外还将模拟三种不同的偶极倾斜（无倾斜，春分和夏至）。 这一方案还将向空间科学界提供通过网络获取结果的机会以及其他可视化工具，以便与模拟的数字数据输出一起使用。 所提议的努力将以非常适度的成本完成，因为要使用的MHD代码已经开发和测试。

The purpose of this project is to implement Phase I of the Global Geospace Circulation Model (GGCM). The development of a GGCM is the primary goal of the GEM (Geospace Environment Modeling) program. Phase I of the GGCM development is designed to provide the user community with detailed simulations results for a selected set of idealized IMF and solar wind dynamic pressure conditions. The conditions to be simulated were chosen by the GGCM steering committee. The UCLA MHD code will be used to generate models for the specified conditions as well as for individual events selected for special study by the GEM program. The UCLA MHD code has already been developed and tested and has been shown to produce realistic results for some specific event studies. This program will simulated all of the IMF and solar wind dynamic pressure conditions selected by the committee and in addition will perform the simulation for three different dipole tilts (no tilt, equinox and solstice). This program will also provide the space science community with Web access to the results as well as other visualization tools to be used with the digital data outputs of the simulations. The proposed effort will be done at very modest cost, since the MHD code to be used has already been developed and tested.