There are a pair of very credible solar scientists who relate recent global heating to extremely high sunspot cycles over the last 40 years. They say we have one more high cycle in 5 years, but then the next two or three 11-year solar cycles will be extremely low. The last time we had this happen was during the Little Ice Age:
"During the period 1645–1715, right in the middle of the Little Ice Age, solar activity as seen in sunspots was extremely low, with some years having no sunspots at all. This period of low sunspot activity is known as the Maunder Minimum."
---from Wikipedia