International Union of Radio Science National Radio Science Meeting (USNC-URSI) 2026

On January 9, 2025, the SEAL Ionosphere Research Team presented "Influence of Meteor-Induced Ionospheric Disturbances on HF Radio Signal Propagation" at the U.S. National Committee for the International Union of Radio Science (USNC-URSI) National Radio Science Meeting in Boulder, Colorado.

This annual meeting, hosted by USNC-URSI and held in Boulder almost every year since 1974, is widely regarded as a flagship forum for radio science, including ionospheric research and radio-wave propagation.

The presentation reported new findings on meteor/fireball-driven ionospheric disturbances and their measurable impact on the integrity of HF radio propagation, addressing a key reliability challenge for HF communications under transient geospace conditions.

Our work introduced the world's first event-level, database-driven method for attributing propagation-integrity changes to individual transient ionospheric disturbances. Instead of relying on broad time-window correlations, the approach supports event-resolved attribution by linking discrete transient disturbances to observable propagation impacts.