CEDAR: Advancing Observations and Understanding of Intermediate Scale Ionospheric Irregularities and Scintillation over the United States

CEDAR：推进对美国上空中尺度电离层不规则和闪烁的观测和理解

• 批准号: 2122639
• 负责人: Fabiano Rodrigues
• 金额: $ 47.42万
• 依托单位: University of Texas at Dallas
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-09-01 至 2026-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2122639&HistoricalAwards=false
• 关键词: CEDAR; Advancing; Observations; Understanding; Intermediate

This award is funded in whole or in part under the American Rescue Plan Act of 2021 (Public Law 117-2). The award will support a research program that expands the ability to observe and assess the impact of ionospheric irregularities and scintillation over the central region of the continental US with a 30 sensor network with high sampling rates of 25 Hz. This award will also create opportunities for citizen science initiatives. The science objectives of the research plan are to study the relationship between the prevailing geomagnetic activity and the occurrence of intermediate scale-size (0.1-10 km) mid-latitude ionospheric irregularities and scintillation. The research will examine the extent that geomagnetic activity controls the occurrence of mid-latitude irregularities and scintillation observed over the US and identifies what intermediate scale irregularities and scintillation are observed during geomagnetically quiet conditions. Additional scientific objectives to be studied in this award are what prevailing ionospheric conditions influence the development of mid-latitude ionospheric irregularities and scintillation. More specifically, to what extent can different types of large-scale ionospheric disturbances (such as the expanded auroral oval, etc.) be associated with the development of intermediate-scale irregularities and scintillation? Additionally, the award would examine how often ionospheric disturbances originating at low latitudes contribute to mid-latitude irregularities and scintillation events. The award will include training and education of graduate students that will be directly involved in the project. The award will create research opportunities for undergraduate students, with commitment to broadening the participation of underrepresented groups. The award will support the creation of citizen science initiatives that may stimulate public engagement and expand observational capabilities. In order to advance understanding of mid-latitude ionospheric irregularities and scintillation (G1), the award will support the deployment of a newly developed, but well-tested, low-cost sensor capable of measuring at a high-rate (25 Hz) ionospheric total electron content (TEC) and L-Band scintillation. The specific science questions are addressed by combining these new measurements with observations (TEC maps) already being routinely made for the American sector. In addition to addressing science questions, the award would expand the ability to assess the impact of mid-latitude ionospheric irregularities and scintillation. The project will also create opportunities for citizen science initiatives by engaging the public in building and operating scintillation monitors. The award will address, in particular, specific science questions that are well-aligned with the priorities and goals of the CEDAR community. Additionally, the effort attends recommendations by the 2013 Solar and Space Physics Decadal Survey and by the National Space Weather Program. The application of an alternative and potentially transformative observational approach that allows addressing a wide range of science questions with reduced costs and risks. The development of an observational infrastructure will produce new distributed measurements of intermediate scale ionospheric irregularities and scintillation over the US. These observations will be made available to the public and scientific community.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该奖项的全部或部分资金来自《2021年美国救援计划法案》(公法117-2)。该奖项将支持一项研究计划，该计划将利用30个传感器网络和25赫兹的高采样率，扩大观察和评估美国大陆中部地区电离层不规则性和闪烁影响的能力。该奖项还将为公民科学倡议创造机会。该研究计划的科学目标是研究普遍的地磁活动与中纬度(0.1-10公里)中尺度电离层不规则和闪烁的发生之间的关系。这项研究将考察地磁活动对美国上空观测到的中纬度不规则和闪烁的控制程度，并确定在地磁平静条件下观察到的中尺度不规则和闪烁。该奖项将研究的其他科学目标是，电离层的普遍状况如何影响中纬度电离层不规则和闪烁的发展。更具体地说，不同类型的大规模电离层扰动(如扩大的极光椭圆形等)在多大程度上可以是否与中等尺度不规则和闪烁的发展有关？此外，该奖项将审查源自低纬地区的电离层扰动对中纬度不规则性和闪烁事件的贡献。该奖项将包括对直接参与该项目的研究生的培训和教育。该奖项将为本科生创造研究机会，致力于扩大代表不足群体的参与。该奖项将支持公民科学倡议的创建，这些倡议可能会刺激公众参与并扩大观测能力。为了促进对中纬度电离层不规则性和闪烁(G1)的了解，该奖项将支持部署一种新开发的、经过充分测试的低成本传感器，该传感器能够以高速率(25赫兹)测量电离层总电子含量(TEC)和L波段闪烁。具体的科学问题是通过将这些新的测量与已经为美国部门常规制作的观测(TEC地图)结合起来解决的。除了解决科学问题外，该奖项还将扩大评估中纬度电离层不规则和闪烁影响的能力。该项目还将通过让公众参与建造和操作闪烁监测仪，为公民科学倡议创造机会。该奖项将特别涉及与雪松社区的优先事项和目标很好地结合在一起的具体科学问题。此外，这项工作还遵循了2013年太阳和空间物理十年调查和国家空间气象计划的建议。应用另一种可能具有变革性的观察方法，能够以更低的成本和风险解决广泛的科学问题。观测基础设施的发展将产生对美国上空中等尺度电离层不规则性和闪烁的新的分布式测量。这些观察结果将向公众和科学界公布。这一奖项反映了NSF的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Amplitude Scintillation Severity and Fading Profiles Under Alignment Between GPS Propagation Paths and Equatorial Plasma Bubbles

• DOI: 10.1029/2022sw003243
• 发表时间: 2022-11
• 期刊: Space Weather
• 作者: J. Sousasantos;B. Affonso;A. Moraes;F. Rodrigues;M. A. Abdu;L. A. Salles;B. Vani

ScintPi 2.0 and 3.0: low-cost GNSS-based monitors of ionospheric scintillation and total electron content

ScintPi 2.0 和 3.0：基于 GNSS 的低成本电离层闪烁和总电子含量监测仪

• DOI: 10.1186/s40623-022-01743-x
• 发表时间: 2022
• 期刊: Planets and Space
• 作者: Gomez Socola, Josemaria;Rodrigues, Fabiano S.
• 通讯作者: Rodrigues, Fabiano S.

Severe L-band scintillation over low-to-mid latitudes caused by an extreme equatorial plasma bubble: joint observations from ground-based monitors and GOLD

由极端赤道等离子体气泡引起的中低纬度地区严重的 L 波段闪烁：地面监测器和 GOLD 的联合观测

• DOI: 10.1186/s40623-023-01797-5
• 发表时间: 2023
• 期刊: Planets and Space
• 作者: Sousasantos, Jonas;Gomez Socola, Josemaria;Rodrigues, Fabiano S.;Eastes, Richard W.;Brum, Christiano G.;Terra, Pedrina
• 通讯作者: Terra, Pedrina

A contribution to real-time space weather monitoring based on scintillation observations and IoT

基于闪烁观测和物联网的实时空间天气监测的贡献

• DOI: 10.1016/j.asr.2022.04.058
• 发表时间: 2022
• 期刊: Advances in Space Research
• 影响因子: 2.6
• 作者: José dos Santos Freitas, Moisés;Moraes, Alison;Cardoso Marques, Johnny;Rodrigues, Fabiano
• 通讯作者: Rodrigues, Fabiano