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Also see the
Updated version of the sunspot minimumWith thanks to
http://wattsupwiththat.com/2008/02/13/where-have-all-the-sunspots-gone/ and appologies to
Pete Seeger:
Where have all the sunspots gone? NA-SA search-ing,
Where have all the sunspots go-ne? NASA don't know.
Where have all the sunspots gone? Global Cooling, anyone?
Will NASA ever learn? Will NA-SA ev-er learn?
Where has all the carbon gone? Green-house gas-es,
Where has all the carbon go-ne? Come down as snow!
Where has all the carbon gone? Heating houses, everyone,
Will NASA ever learn? Will NA-SA ev-er learn?
Where has Global Warming gone? Point not tip-ping,
Where has Global Warming go-ne? Its gonna slow.
Where has Global Warming gone? Normal seasons of the Sun,
Will NASA ever learn? Will NA-SA ev-er learn?As
Yogi Berra famously observed, "It's tough to make predictions, especially about the future."
NASA CHANGES PREDICTIONS, THEN CHANGES THEM AGAIN
When NASA scientists make predictions about the long-term future (six to twelve years) you don't expect them to make drastic changes in only a few months. Yet, they just have!
Back a few months ago (October 2008, see left side in photo above) NASA predicted that the upcoming sunspot cycle would peak at a higher level than the previous cycle which recently ended. The previous cycle peaked at around 120 in the year 2000. NASA predicted the upcoming cycle would peak at around 137 early in the year 2012, an increase of about 15% over the past cycle.
As the diagram above indicates, NASA smoothes short-term jagged excursions in sunspot counts and plots the yearly average as a smoothed bold curve. They also provide a range of about plus and minus 20% as indicated by the smooth curves above and below the average. All predictions refer to the smoothed averages.
This month (January 2009, see right side in photo above) NASA revised their prediction and now say the upcoming cycle will peak at a level some 30% below their prediction of only three months ago! They say it will peak at about 104 late in the year 2012, a decrease of about 15% below the past cycle. That is a grand total of 30% below their prediction of only three month ago!
If we go back a few years ago, to 2006, they were predicting a peak of 145 for the coming cycle, so the latest prediction is more than 40% lower than their original one. OY!
WHY THE CHANGE IN NASA PREDICTIONS?
Back in 2006
NASA predicted the previous cycle was ending and the next would begin in late 2006 or early 2007.
Well, here it is 2009 and the next cycle has not begun!
That delay is the reason for the change in predictions. The next sunspot cycle was expected one or two years ago but has yet to materialize.
This is our US Government taxpayer money at work!
IRA'S PREDICTIONS
I am no weather or climate expert, but I think I can do better than NASA. My prediction, shown in the annotations above, is that the upcoming cycle will peak at about 80 in the year 2013 or perhaps even 2014.
Note that my prediction is that the peak will be reached a year or more later and will be near or below the lowest edge of the NASA plus and minus 20% band for NASA's October 2008 prediction. Please make a note of my prediction and, in 2013 or 2014, let me know how I did! Of course, anything posted to the WWW becomes a more or less permanant record so there will be proof if I am correct (and I will appologize if I am wrong).
WHY ARE SUNSPOT CYCLES IMPORTANT?
Sunspot cycles are about 11 years long, with some as short as 9 years and others as long as 14. It turns out that average global surface temperatures are correlated with the number of sunspots and inversely correlated with the length of the sunspot cycle.
Although human activity, such as burning formerly sequestered carbon from petroleum, coal and natural gas and releasing heat energy and CO2 into the environment, accounts for a substantial fraction of the current Global Warming trend, most climate change is due to the natural cycles in the activity of the Sun and changes in the orbit and tilt of the Earth.
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The above diagram, from
Wikipedia, shows how sunspot activity has varied since the year 1600. According to
NASA the period from about 1645 to 1715, called "Maunder Minimum" or "the Little Ice Age", corresponded to a time of little sunspot activity. The "Dalton Minimum" in the early 1800's was a shorter and smaller drop in solar activity. These periods saw considerable Global Cooling.
The period since 1940 has seen relatively higher solar activity that corresponds to the observed Global Warming.
POSSIBLE BENEFIT OF DECREASED SUNSPOT ACTIVITY
If, as now appears possible, sunspot activity is actually decreasing, and if that trend continues (two big "ifs") we may experience a reduction in the rate of increase in Global Warming and, who knows, perhaps a bit of Global Cooling!
This could give us time to control our energy usage and switch to more carbon-neutral sources such as wind, water, biomass, direct solar, and nuclear, along with recycling and conservation. We may also benefit from the affects of globalization in raising living standards and reducing fertility rates.
However, so long as population continues to increase, along with worldwide standards of living, it is inevitable that we will continue to release more heat energy and sequestered carbon into the environment for the forseeable future.
The only "hope" we have to reverse this trend would be a nuclear war or a genetic engineering disaster that might block the sun for a season and/or reduce the population drastically. No one would wish for such a "solution".
Thus, unless the apparent reduction in sunspot activity leads us to an extended global cooling or temperature-neutral period, we will have to learn to live with a warmer Earth.
Ira Glickstein