Solar Update October 2015

Interesting post and interesting discussion featuring rgb, Leif, Willis, et al.

Watts Up With That?

Guest essay by David Archibald


While Solar Cycle 24 is well into its decline in terms of F10.7 flux and sunspot number, several types of solar activity have risen dramatically over 2015. The solar wind flow pressure, for example, is now at a two decade high. That in turn means that the low in neutron count for this cycle may be more than a year out. This also means that the expected, much-awaited solar-driven cooling could be put off for at least year, with the consequence that the earthly temperature plateau will also continue for another year.

It is also possible that Solar Cycle 24 may end up having the odd combination of being both short and weak. The best analogue for Solar Cycle 24 could be the nine-year long Solar Cycle 2. Lastly, the Sun’s magnetic field strength suggests that Solar Cycle 25 will be as weak as…

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