GEM: Turbulent Structure of the Magnetopause Current Layer

多机构美国全球变化研究项目（我们不断变化的星球，地球科学委员会，1991年）的一个组成部分是理解和模拟地球空间环境。作为对美国全球变化研究计划的一部分，美国国家科学基金会大气科学部建立了一项新的研究计划——地球空间环境建模（GEM），其目标是支持对地球空间动力学和结构特性的基础研究。从而构建具有预测能力的全球地球空间模型。第一个GEM活动的主题是磁层边界、磁层边界之外的磁鞘，以及从磁层边界到电离层的连接。磁层顶是磁鞘中受冲击的太阳风等离子体和磁层等离子体之间的边界。磁层顶的磁重联和异常输运是太阳风等离子体向磁层输运的关键机制，是地球空间环境模拟（GEM）项目的重点研究方向。该基金的目标是建立一个磁层顶电流层湍流波动和传输的模型，该模型可以与无碰撞重联的模拟相结合，并与观测结果进行比较。

An integral component of the multi-agency U.S. Global Change Research Program (Our Changing Planet," Committee on Earth Sciences, 1991) is understanding and modeling the geospace environment. As part of its contribution to the U.S. Global Change Research Program, the National Science Foundation's Division of Atmospheric Sciences has established a new research initiative, Geospace Environment Modeling (GEM), with the goal of supporting basic research into the dynamical and structural properties of geospace, leading to the construction of a global geospace model with predictive capability. The subjects of the first GEM campaign are the magnetospheric boundary, the magnetosheath beyond it, and the connection from the boundary through the magnetosphere to the ionosphere. The magnetopause is the boundary between the shocked solar wind plasma in the magnetosheath and magnetospheric plasma. Magnetic reconnection and anomalous transport at the magnetopause are key mechanisms for the transport of solar wind plasma into the magnetosphere, whose understanding is a priority of the Geospace Environment Modeling (GEM) Program. The goal of this grant is to develop a model of turbulence fluctuations and transport in the magnetopause current layer which can be coupled with simulations of collisionless reconnection and compared with observations.