Tag: solar minimum

The sun continues its ramp down

10:44 am

On Monday NOAA posted its monthly update of the solar cycle, showing the sunspot activity for the Sun in June. As I do every month, I am posting it here, below the fold, with annotations to give it context.

The decline in sunspots continued for the fourth month in a row, increasing the likelihood that the peak of solar maximum has finally come and gone and that we now seeing the beginning of the ramp down to solar minimum. This resulting solar maximum comes close to matching the science community’s final prediction (indicated by the red line), though that prediction was not detailed enough to include the distinct and unusual double peak for this maximum.
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The Sun settling down?

3:43 pm

Two weeks ago NOAA posted its monthly update of the solar cycle, showing the sunspot activity for the Sun in April. I have been remiss about doing my monthly post about this, so here it is now, posted below with annotations.

April Solar Cycle graph

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.

The Sun continued the drop in sunspots seen the previous month, though the total number remains above the 2009 prediction for this moment in the solar cycle. As already noted, that the second peak of this double peaked solar maximum has been much stronger than the first remains unprecedented.

Overall, the maximum continues to be the weakest seen in a hundred years. Whether this is an indicator of future events or an anomaly can only be discovered after the Sun completes this solar solar cycle and begins the ramp up to its next solar maximum, at least five years away.

The next update is only a few weeks away. Stay tuned.

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An upbeat wimpy maximum holds on

8:00 pm

Today NOAA posted its monthly update of the solar cycle, showing the sunspot activity for the Sun in November. As I do every month, I am posting it here, below the fold, with annotations.

As in October, the Sun was more active than it has been for this entire solar maximum. November’s numbers dropped slightly from October, but still remained high, though as has been typical for this solar maximum they remained below prediction.
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The sun goes boom!

11:34 am

It is always best to admit when you are wrong as soon as you find out. Last month, in reporting NOAA’s monthly update of the solar cycle, I unequivocally stated that

My interpretation of this data tells me that almost certainly the solar maximum has ended. We might see some later fluctuations whereby the sunspot number jumps, but the Sun is clearly beginning its ramp down to solar minimum.

Well, I spoke too soon. Last night NOAA posted the newest update of the solar cycle, and it shows that in October the Sun was more active then it has been in two years. In fact, for only the second time this entire solar cycle the Sun’s sunspot activity actually came close to matching the predictions of scientists. This month’s graph is posted below the fold, with annotations.
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The Sun shows a bit of life

8:24 am

It is that time again, buckos! Yesterday NOAA released its monthly update of the Sun’s sunspot cycle, covering the period of April 2013. As I have done every month for the past three years, I have posted this latest graph, with annotations to give it context, below the fold.

For the second month in a row the Sun’s sunspot output increased. The result is that April 2013 saw the most sunspot activity in more than a year, since December 2011.

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Ramping way up!

12:08 pm

The monthly update of the solar cycle graph produced by NOAA’s Space Weather Prediction Center was released yesterday. I have posted the graph below the fold.

The fast ramp up to solar maximum is continuing. For the fifth month in a row the Sun’s sunspot activity leaped upward. Not only has the sunspot activity once again exceeded the prediction for this particular time period, the activity is shot way above the solar maximum peak predicted for several years hence. This behavior is far different then what we’ve seen during the just completed long and deep solar minimum, when the Sun consistently underperformed the predictions for sunspot activity. Now it appears to be outperforming the predictions.
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Two climate papers of interest

12:18 pm

When I appear on radio and am talking about climate change, I often get the same questions over and over.

  • Is the climate warming?
  • If so, is human behavior an important factor for causing that warming?
  • How much does the sun influence climate change?
  • Is the ozone hole linked to climate change?

The truth is that, right now, no one can really answer any of these questions with any certainty. While a large majority of climate scientists might be convinced the Earth is warming and that human activity is causing this warming, the public has great doubts about these claims, partly because of the untrustworthy behavior of many of these climate scientists and partly because the science itself is often confusing.

We simply don’t yet have enough data. Worse, much of the data we do have is tainted, unreliable because of the misconduct and political activism of the very climate scientists who are trying to prove the case for man-made global warming.

Two new papers, published today in Geophysical Research Letters, add some interesting but small data points to this whole subject.
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The sun’s weak maximum continues

12:27 pm

The monthly graph from NOAA’s Space Weather Prediction Center of the Sun’s solar cycle sunspot activity is out and I have posted it below. Though activity increased for the second month in a row, the totals are still below the activity levels of March and April 2011.

I am beginning to think that I sound like a broken record. This monthly graph once again suggests that the next solar maximum will be weak, possibly weaker than the most up-to-date predictions for the next solar maximum. And even if that prediction is correct, the data continues to point towards a quieter Sun, with the likelihood of a long period of no sunspots beginning in the next decade.

Based on past history, the consequences of a long Maunder-type minimum, where there are no sunspots for decades, should be very profound. Every time the Sun has gone this quiet in the past, the Earth’s climate has cooled. Furthermore, new results just released add weight to this conclusion. A less active Sun allows more intergalactic cosmic rays to hit the atmosphere, and the CLOUD experiment at CERN strongly suggests that the higher rate of cosmic rays could in turn increase the atmosphere’s cloudiness, thereby reflecting more light and energy and making the Earth colder.

The sunspot graph for August 2011

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A blank sun during solar maximum

9:06 am

Though it is not yet official, it appears the sun is blank of sunspots today, for the first time since January 16.

Solar scientists have concluded that the solar minimum of the past four years has ended and that the sun is now moving towards solar maximum. The recent activity in August has seemed to confirm this. However, once the minimum has ended, the sun should not have any further blank days until the maximum is over and the sun is ramping back down to solar minimum. That the sun should appear blank again during its ramp up to solar maximum is quite unusual, probably unprecedented, and is further evidence that the sun is heading towards a period of little or no solar activity.

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Hot time on the ol’ Sun tonight!

10:09 pm

After literally years of inactivity, well below all initial predictions, the Sun truly came to life this past month. Below is the March monthly update of the Sun’s sunspot cycle, published by NOAA’s Space Weather Prediction Center. The red curve is the prediction, while the dotted black line shows the actual activity.

As you can see, the Sun’s sunspot activity shot up precipitously. Though I don’t have the data from past years, the March jump appears to me to probably be one of the fastest monthly rises ever recorded.

Does this mean the newest prediction from the solar scientists at the Marshall Space Flight Center calling for a weak solar maximum in 2013 is wrong? Probably not, though of course in this young field who knows? I would say, however, that the overall trend of the data still suggests the next maximum will be very weak.

Stay tuned! The next few months should finally give us a sense of where the next maximum is heading.

March Sunspot graph

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