Operational impact · Communications
Radio Communications
The X-rays from a solar flare suddenly increase the ionisation of the day-side ionosphere, absorbing high-frequency radio waves and causing radio blackouts across the sunlit Earth — the effect measured by NOAA's R-scale.
Drivers, environments & assets
Across space weather
Knowledge connections
- Associated withThe Ionosphere
- Associated withNOAA R-Scale (Radio Blackouts)
- Associated withSolar Flare
- Associated withThe Ionosphere
Sources
The primary and reference sources this topic draws on.
- NOAA SWPCNOAA Space Weather Prediction Center
Space-weather forecasts and alerts: aurora (OVATION), the Kp index, and the G1–G5 geomagnetic storm scale.