GEM: Investigations of the Ionospheric Signatures of Cusp, Magnetopause and Boundary Layer Processes with an Imaging Riometer at Sondrestrom, Greenland

由多个机构组成的美国全球变化研究计划(我们的地球变化研究计划，1991年成立的地球科学委员会)的一个组成部分是理解地球空间环境并对其进行建模。作为对美国全球变化研究计划的贡献的一部分，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)，目的是支持对地球空间动力学和结构属性的基础研究，从而构建具有预测能力的全球地球空间模型。第一次GEM运动的主题是磁层边界、其外的磁鞘以及从边界通过磁层到电离层的连接。这笔赠款是为了支持在格陵兰岛的Sundrostrom安装一台成像测速仪，与GEM活动一起使用。具体地说，这笔赠款将调查瞬变白天降水区的性质以及与高纬度尖点区域附近和内部其他短暂电离层扰动的关系。***

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. This grant is for support to place an imaging riometer at Sundrostrom, Greenland to be used in conjunction with GEM activities. Specifically, this grant will investigate the nature of transient dayside precipitation regions and the relationship to other short-lived ionospheric perturbations near and within the high-latitude cusp region. ***