Solar & space-weather phenomenon · Solar source
Sunspots
Dark, cooler patches on the Sun's visible surface where intense magnetic fields suppress the flow of heat from below. Their number rises and falls with the solar cycle, and they mark the magnetically active regions from which flares and CMEs erupt.
Drivers, environments & assets
Across space weather
Knowledge connections
- Associated withThe Solar Cycle
- Associated withThe Sun
- Associated withActive Regions
- Associated withThe Solar Cycle
- Associated withActive Regions
- Associated withThe Photosphere
- Associated withPlage
- Associated withThe Solar Dynamo
- Associated withThe Butterfly Diagram
- Associated withThe Maunder Minimum
- Associated withSolar Irradiance Variation
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.