Solar Cycle 24 Could Be 13 Years Long – Cooler Times Ahead?

On Climate Audit’s unthreaded comment forum, David Archibald noted some interesting facts about the solar cycle lengths and upcoming Solar Cycle 24, and provided the graph above. Solar Cycle 20 was slightly longer than average at 11.6 years. The average solar cycle length from 1643 to 1996 is 11.4 years. Now that Dr Svalgaard has…