GEM: Low-Latitude Boundary Layer Model - Structure, Signatures and Mappings

GEM：低纬度边界层模型 - 结构、特征和映射

• 批准号: 9112418
• 负责人: William Lotko
• 金额: $ 15.46万
• 依托单位: Dartmouth College
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-08-01 至 1993-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9112418&HistoricalAwards=false
• 关键词: GEM; Low; Latitude; Boundary; Layer

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 concerned with theoretical modeling of the low latitude boundary layer (LLBL) and its mappings and electrical coupling to the dayside ionosphere. The primary objectives are to advance current understanding of (i) the field line mapping between the LLBL and the ionosphere, and (ii) the generation and distribution of the dayside region 1 currents and the associated convection and particle precipitation.

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。这项资助涉及低纬度边界层（LLBL）的理论建模及其与日侧电离层的映射和电耦合。主要目标是促进目前对(i) LLBL和电离层之间的场线测绘，以及（ii）日侧1区电流的产生和分布以及相关的对流和颗粒降水的理解。