Collaborative Research: CEDAR: Measuring Daily Ionospheric Variability and the 2023 & 2024 Solar Eclipse Ionospheric Impacts Using HamSCI HF Doppler Shift Receivers

合作研究：CEDAR：测量每日电离层变化和 2023 年

• 批准号: 2230345
• 负责人: Nathaniel Frissell
• 金额: $ 17.43万
• 依托单位: University of Scranton
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-01-15 至 2025-12-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2230345&HistoricalAwards=false
• 关键词: Collaborative; Research; CEDAR; Measuring; Daily

This project will study ionospheric variability across the continental United States (CONUS) generated by dawn/dusk transitions and two solar eclipses occurring in 2023 and 2024. Dawn and dusk produce a complex response in observed ionospheric variability that is still not completely understood. A network of Global Navigation Satellite System (GNSS) stabilized/synchronized high frequency (HF) receivers known as Grapes will be used for the study. Thirty Grape receivers will be deployed throughout North America to optimize the study of the ionospheric impacts simultaneously received from two locations. Additional stations will be funded by the HamSCI amateur radio community. This project will generate observations to answer the scientific questions: (1) How do dawn and dusk ionospheric variability vary with local time, season, latitude, longitude, frequency, distance, and direction from the transmitter? (2) Is eclipse ionospheric response symmetric with regard to the onset and recovery timing? (3) How similar is the eclipse to the daily dawn and dusk terminator passage? (4) Would multipath HF mode-splitting in the post-eclipse interval be similar to dawn events? (5) Would the response be different for two eclipses?This project is part of the Ham Radio Science Citizen Investigation (HamSCI) program and will be open to volunteers who want to field instruments and contribute to scientific analysis and discussion. This project will also establish a new network of DASI instruments that, due to its low cost and operation by volunteers, has the potential to provide measurements for years to come. This project will support students (undergraduate, MS and Ph.D.).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.

该项目将研究由黎明/黄昏过渡以及 2023 年和 2024 年发生的两次日食所产生的整个美国大陆 (CONUS) 的电离层变化。黎明和黄昏对观测到的电离层变化产生复杂的响应，但目前尚未完全了解。这项研究将使用名为 Grapes 的全球导航卫星系统 (GNSS) 稳定/同步高频 (HF) 接收器网络。 三十台 Grape 接收器将部署在整个北美地区，以优化对从两个地点同时接收到的电离层影响的研究。其他电台将由 HamSCI 业余无线电社区资助。该项目将生成观测结果来回答以下科学问题：（1）黎明和黄昏电离层变化如何随当地时间、季节、纬度、经度、频率、距离和发射机方向变化？ (2) 日食电离层响应在开始和恢复时间上是否对称？ (3) 日食与每日黎明和黄昏的终结者通道有多相似？ (4) 日食后间隔中的多径高频模式分裂是否与黎明事件类似？ (5) 两次日食的反应会有所不同吗？该项目是业余无线电科学公民调查 (HamSCI) 计划的一部分，将向想要现场仪器并为科学分析和讨论做出贡献的志愿者开放。 该项目还将建立一个新的 DASI 仪器网络，由于其成本低廉且由志愿者操作，因此有可能在未来几年提供测量。 该项目将为学生（本科生、硕士和博士）提供支持。该奖项反映了 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

Crowdsourced Doppler measurements of time standard stations demonstrating ionospheric variability

• DOI: 10.5194/essd-15-1403-2023
• 发表时间: 2023-03-28
• 期刊: EARTH SYSTEM SCIENCE DATA
• 影响因子: 11.4
• 作者: Collins，Kristina;Gibbons，John;Chakraborty，Shibaji
• 通讯作者: Chakraborty，Shibaji

Heliophysics and amateur radio: citizen science collaborations for atmospheric, ionospheric, and space physics research and operations

• DOI: 10.3389/fspas.2023.1184171
• 发表时间: 2023-11-16
• 期刊: FRONTIERS IN ASTRONOMY AND SPACE SCIENCES
• 影响因子: 3
• 作者: Frissell，Nathaniel A.;Ackermann，John R.;Yadav，Nisha
• 通讯作者: Yadav，Nisha