Collaborative Research: CEDAR: Characterization of Ionospheric-Thermospheric Long-lasting SED (Storm Enhanced Density) Dynamics

合作研究：CEDAR：电离层-热层持久 SED（风暴增强密度）动力学的表征

• 批准号: 1926022
• 负责人: Chigomezyo Ngwira
• 金额: $ 15.33万
• 依托单位: ATMOSPHERIC & SPACE TECHNOLOGY RESEARCH ASSOCIATES, L.L.C.
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-09-01 至 2021-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1926022&HistoricalAwards=false
• 关键词: Collaborative; Research; CEDAR; Characterization; Ionospheric

The goal of the research is to understand the initiation and development of a phenomenon called mid-latitude long-lasting storm enhanced density (LLSED). LLSEDs are regions of enhanced electron density at low latitudes that emanate from midlatitude SED plumes. The term "plume" refers to structures in the Earth's magnetosphere and ionosphere that couple these two systems and redistribute plasma among them. LLSEDs last over 6 hours, outliving the SED plumes that spawn them, and can potentially adversely impact communication and navigation systems. However, there remains no consensus on their causes. The work skillfully fuses ground- and space-based data with numerical modeling tools to examine ionospheric disturbances that are of some concern for the aviation and telecommunication industries. The grant will support an early career minority scientist, and contribute to Catholic U's REU program.

这项研究的目的是了解一种名为中纬度长期风暴增强密度(LLSED)的现象的起源和发展。LLSED是从中纬度SED羽流发出的低纬度电子密度增强的区域。术语“羽流”指的是地球磁层和电离层中的结构，它们将这两个系统连接在一起，并在其中重新分配等离子体。LLSED持续时间超过6个小时，比产生它们的SED羽流存活时间更长，并可能对通信和导航系统产生不利影响。然而，对于它们的起因仍然没有达成共识。这项工作巧妙地将地面和天基数据与数值建模工具融合在一起，以检查航空和电信行业关注的电离层干扰。这笔赠款将支持一位早期职业生涯的少数族裔科学家，并为天主教大学的REU计划做出贡献。

项目成果

A Model of an Integrated Research and Education Program in Space Weather at a Community College

• DOI: 10.1029/2019sw002307
• 发表时间: 2020-01-01
• 期刊: SPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS
• 影响因子: 3.7
• 作者: Damas, M. C.;Ngwira, C. M.;Mohamed, A.
• 通讯作者: Mohamed, A.

Dynamic Response of Ionospheric Plasma Density to the Geomagnetic Storm of 22‐23 June 2015

• DOI: 10.1029/2018ja026172
• 发表时间: 2019-08
• 期刊: Journal of Geophysical Research: Space Physics
• 作者: C. Ngwira;J. Habarulema;E. Astafyeva;E. Yizengaw;O. Jonah;G. Crowley;A. Gisler;V. Coffey