English: The solar cycle, or the solar magnetic activity cycle, is the main source of the ~10.7 year periodic solar variation (changing the level of irradiation experienced on Earth) which drives variations in space weather and to some degree weather on the ground and possibly climate change. The cycle is observed by counting the frequency and placement of sunspots visible on the Sun. Powered by a hydromagnetic dynamo process driven by the inductive action of internal solar flows, the solar cycle:
This category has the following 2 subcategories, out of 2 total.
Media in category "Solar cycles"
The following 10 files are in this category, out of 10 total.
Read in another language
This page is available in 20 languages