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Past studies have shown that sunspot numbers correspond to warming or cooling trends. The twentieth century has featured heightened activity, indicating a warming trend.  (Source: Wikimedia Commons)

Solar activity has shown a major spike in the twentieth century, corresponding to global warming. This cyclic variation was acknowledged by a recent NASA study, which reviewed a great deal of past climate data.  (Source: Wikimedia Commons)
Report indicates solar cycle has been impacting Earth since the Industrial Revolution

Some researchers believe that the solar cycle influences global climate changes.  They attribute recent warming trends to cyclic variation.  Skeptics, though, argue that there's little hard evidence of a solar hand in recent climate changes.

Now, a new research report from a surprising source may help to lay this skepticism to rest.  A study from
NASA’s Goddard Space Flight Center in Greenbelt, Maryland looking at climate data over the past century has concluded that solar variation has made a significant impact on the Earth's climate.  The report concludes that evidence for climate changes based on solar radiation can be traced back as far as the Industrial Revolution.

Past research has shown that the sun goes through eleven year cycles.  At the cycle's peak, solar activity occurring near sunspots is particularly intense, basking the Earth in solar heat.  According to Robert Cahalan, a climatologist at the Goddard Space Flight Center, "Right now, we are in between major ice ages, in a period that has been called the Holocene."

Thomas Woods, solar scientist at the University of Colorado in Boulder concludes, "The fluctuations in the solar cycle impacts Earth's global temperature by about 0.1 degree Celsius, slightly hotter during solar maximum and cooler during solar minimum.  The sun is currently at its minimum, and the next solar maximum is expected in 2012."

According to the study, during periods of solar quiet, 1,361 watts per square meter of solar energy reaches Earth's outermost atmosphere.  Periods of more intense activity brought 1.4 watts per square meter (0.1 percent) more energy.

While the NASA study acknowledged the sun's influence on warming and cooling patterns, it then went badly off the tracks.  Ignoring its own evidence, it returned to an argument that man had replaced the sun as the cause current warming patterns.  Like many studies, this conclusion was based less on hard data and more on questionable correlations and inaccurate modeling techniques.

The inconvertible fact, here is that even NASA's own study acknowledges that solar variation has caused climate change in the past.  And even the study's members, mostly ardent supports of AGW theory, acknowledge that the sun may play a significant role in future climate changes.



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Global Warming Eh?
By callmeroy on 6/5/2009 8:24:59 AM , Rating: 2
I have no elevator lift, no stage with a movie screen with fancy graphs --- I only have my life experience of where I live, work and play everyday. And based on that life experience --- I found it rather humorous with all the attention Global Warming gets these days to recount the last two summers around here (actually spring and summer) have been un-usually cool (some folks call it "mild"), do I mean cool like grab your jacket cool--- of course not stupid..I mean where its normally 95 in August, its in the upper 80's instead. You are still gonna break a sweat, still gonna feel "hot" --- but still its been cooler. Right now so far the end of May and the start of June around here -- averaging in the 60's...that's cool.

Yet, I'll state why , despite the humor it brings me, I do see some good in the global warming alarm --- it does make some folks conserve , recycle and clean up after themselves. I think you should do that automatically with no cause other then a sense of common decency but if global warming, however full of crap I think it is -- accomplishes that...then ok go Global Warming!




RE: Global Warming Eh?
By Spuke on 6/5/2009 11:30:01 AM , Rating: 2
quote:
it does make some folks conserve , recycle and clean up after themselves
If it was just that then I think most people would not care to be so passionate about the issue (either for or against). The problem is that government wants to tax US here and there because of this, whether you believe it or not. That's my problem and I think most others problems with it. We already have enough abused government bureaucracies that a ton of our money gets poured into. We don't want anymore!!!! Even Californians are fed up with their governments proposed extension and creation of yet more taxes was shot down by a significant margin.


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