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Sunspot update: The record flatline continues

In the month of December 2019 the Sun continued its longest stretch of overall sunspot inactivity ever recorded, reaching seven months in length. At no point since the last grand minimum in the 1600s have scientists ever seen so few sunspots over so long a time period.

Below is NOAA’s December update of its graph showing the long term sunspot activity of the Sun. As I have done now every month since this webpage began in 2011, it is posted below, with annotations:

December 2019 sunspot activity
The graph above has been modified to show the predictions of the solar science community for the previous solar maximum. 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, extended in November 2018 four years into the future.

The sunspot count for the month of December 2019

December saw only two sunspots, both becoming active on the same day, December 24. Both also had a polarity belonging to the next solar cycle, providing evidence that we will have another sunspot maximum sometime in the next five years, and that we are not heading to another grand minimum where there are no sunspots for decades.

The SILSO graph to the right gives a close-up look at the month, and provides further evidence that a new solar maximum is coming. Note the new sunspot that appeared on January 1st. That sunspot also has a polarity assigning it to the next solar maximum. While the sunspots in December were weak and decayed quickly, the January sunspot has been stronger, sticking around for at least a week.

Still, in 2019 the facing hemisphere of the Sun was blank 77% of the time, 281 days total, the most since 1913, when the Sun was blank 313 days. Even though the last solar minimum in 2008-2009 was considered unusually long and weak, the minimum now has been far weaker.

The unknowns remain. Though the detection of sunspots assigned to the next solar maximum strongly suggests that a grand minimum is not about to take place, we still might be surprised. When the last grand minimum occurred in the 1600s, the telescope had just been invented, and scientists really did not know what to look for on the Sun. They didn’t even know that there had been a solar cycle up until that century. It could be that new cycle sunspots did occur, and then stopped appearing.

Or not. I am speculating wildly. All we can do is watch and wait to find out.

Meanwhile, the Sun’s influence on climate change remains uncertain. Periods of weak sunspot activity have generally been associated with cold weather, for reasons that are not yet understood. If such things happen again, as appears to been the case with the lack of warming for the past two decades (during this period of weak sunspot cycles), then we might be able to pin down the Sun’s exact contribution in determining the Earth’s climate. And we need to know that exact contribution in order to better model the Earth’s climate. Right now most climate computer models do not do a very good job, and that failure is partly because of a lack of understanding when it comes to the Sun.

Conscious Choice cover

Now available in hardback and paperback as well as ebook!

 

From the press release: In this ground-breaking new history of early America, historian Robert Zimmerman not only exposes the lie behind The New York Times 1619 Project that falsely claims slavery is central to the history of the United States, he also provides profound lessons about the nature of human societies, lessons important for Americans today as well as for all future settlers on Mars and elsewhere in space.

 
Conscious Choice: The origins of slavery in America and why it matters today and for our future in outer space, is a riveting page-turning story that documents how slavery slowly became pervasive in the southern British colonies of North America, colonies founded by a people and culture that not only did not allow slavery but in every way were hostile to the practice.  
Conscious Choice does more however. In telling the tragic history of the Virginia colony and the rise of slavery there, Zimmerman lays out the proper path for creating healthy societies in places like the Moon and Mars.

 

“Zimmerman’s ground-breaking history provides every future generation the basic framework for establishing new societies on other worlds. We would be wise to heed what he says.” —Robert Zubrin, founder of founder of the Mars Society.

 

All editions available at Amazon, Barnes & Noble, and all book vendors. The ebook can be purchased direct from my ebook publisher, ebookit, in which case you don't support the big tech companies and I get a bigger cut much sooner. Note that the price for the ebook, $3.99, goes up to $5.99 on September 1, 2022.

 

Autographed printed copies are also available at discount directly from me (hardback $24.95; paperback $14.95). Just email me at zimmerman @ nasw dot org.

5 comments

  • Alex Andrite

    Dr. Tamitha Skov at spaceweatherwoman.com offers a series of “space weather” podcast classes as well as daily and weekly forecasts. Hers is a website worth visiting.
    Very amazing solar stuff.

  • Phill O

    “that we are not heading to another grand minimum”

    Too early to tell. My prediction was that if we were going into a grande minimum, this next cycle maximum would be weaker than #25.

    “All we can do is watch and wait to find out”
    This is more like it. and yes, the wait game.

    We will never know the sun’s contribution due to the politics of this issue, IMHO.

  • Lee Valentine

    Prof. Valentina Zharkova has done an analysis that appears to track internal solar dynamics very well. Her, and co investigators’, latest analysis has successfully reproduced earlier solar activity ( known from radionuclides from the
    increased galactic cosmic ray flux marking solar minima, and decreased radionuclides from maxima).

    Her predictive success for recent sunspot numbers beat 178 predictions, and tied with one other.

  • Phill O

    There are things about the sun, as with everything, that we do not know that we so not know!

    If we had spent on solar research what we spent on AGW, maybe we would know much more and could make predictions.

  • Phill O wrote, “If we had spent on solar research what we spent on AGW, maybe we would know much more and could make predictions.”

    How liberal of you, Phill. Throwing money at this scientific problem would almost certainly done little, as the processes involved evolve over many many centuries. What we need is time, and that is something money can’t buy.

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