HamSCI: An International Collaboration of Scientists and Volunteers Working Together to Understand the Geospace Environment

The Ham Radio Science Citizen Investigation (HamSCI) is an international citizen science collaboration that engages amateur radio operators, students, scientists, and engineers in research on the geospace environment. By treating the global amateur radio community as both a distributed sensor network and active participants in the scientific process, HamSCI advances the goals of the CEDAR community to understand the coupled geospace system while creating substantive educational and outreach opportunities. Flagship efforts include the HamSCI Personal Space Weather Station, which puts research-grade ionospheric instrumentation in volunteers' hands; the Meteor Scatter and Solar Eclipse QSO Parties, which mobilize thousands of operators worldwide as coordinated observation campaigns; and investigations of the polar ionosphere and HF propagation. HamSCI sustains this work through an annual workshop, topical working groups, and pathways that bring amateur participants and students into peer-reviewed publications. This poster summarizes current projects, data products, participation pathways, and educational outcomes.