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

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。这笔拨款用于支持在格陵兰的Sundrostrom放置一个成像测速仪，与GEM活动一起使用。具体来说，这笔拨款将研究短暂的白天降水区域的性质以及与高纬度尖峰区域附近和内部的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. ***