Project Grant 2230345

This $174,257 project grant from the National Science Foundation's Geosciences program (CFDA 47.050) will fund collaborative research to measure daily ionospheric variability and solar eclipse impacts using amateur radio HF Doppler shift receivers. Led by the University of Scranton, the project will deploy thirty GRAPE receivers across North America to study ionospheric responses to dawn, dusk, and solar eclipses in 2023 and 2024. The receivers will generate observations to answer scientific questions about how ionospheric variability varies with location and other factors during daily terminator passages and eclipses. The project establishes a network that, through volunteer operation, has potential to provide long-term ionospheric measurements. It also supports student research and involves the amateur radio community in instrument fielding and scientific analysis. The funding period is January 15, 2023 to December 31, 2025.