As I have done every month since 2011, I am now posting NOAA’s the monthly update of the solar cycle, covering sunspot activity for January 2019. They posted this update on Monday, and I am posting it below, annotated to give it some context.
The graph above has been modified to show the predictions of the solar science community. The green curves show the community’s two original predictions from April 2007, with half the scientists predicting a very strong maximum and half predicting a weak one. The red curve is their revised May 2009 prediction.
January saw a slight uptick in sunspot activity, but the overall activity remains comparable to mid-2008, when the last prolonged solar minimum began. If you go to my October 2018 update, you can see the graph when it included data going back to 2000 and see the entire last minimum.
That last minimum started in the last half of 2007, and lasted until mid-2009, a full two years. If you look at the red line prediction of the solar science community, it appears that they are expecting this coming minimum to last far longer, almost forever. I expect this is not really true, but that they have simply not agreed on a prediction for the next cycle. Some in that solar science community have hypothesized that we are about to enter a grand minimum, with no sunspots for decades and thus no solar maximum. Others do not agree.
Since neither faction really understands the mechanism that causes these sunspot cycles, there is no way now to determine what will happen, until it does so. What we do know from climate data is that the Earth cools when the Sun is inactive. Why remains unclear, though there is at least one theory, with some evidence, that attempts to explain it.
And despite the untrustworthy claims of NOAA and NASA scientists that the last few years have been hot, experience on the ground disputes this. Their data has been adjusted (tampered if one wants to be more blunt) to make it fit their global warming theory. The raw unadjusted data suggests things have instead cooled, which better fits with the brutal winters Americans experienced for the past decade or so.
If the Sun does enter a grand minimum in the coming decades, I suspect it will become increasingly difficult for NOAA and NASA to continue their temperature adjustments and continue claiming things are getting warmer. At a minimum, we will learn something about the Sun and its behavior and its influence on the climate that we never knew before.