Active Longitude
All > Science > Weather
- In solar-terrestrial terms, the approximate center of a range of heliographic longitudes in which Active Regions are more numerous and more flare-active than the average.
NOAA National Weather Service - Cite This Source - This Definition - Comprehensive Flare Index (CFI), Flare, H-Alpha, Homologous Flares, Hyder Flare, Limb Flare, Loop Prominence System, LPS, Magflare, Major Flare, Post-Flare Loops, Two-Ribbon Flare, White Light Flare