Excellent article on that here, with comments by Dr. Peter Corbyn (meteorologist), and Professor Nir Shaviv, (an astrophysicist), and Professor Ian Clark (Department of Earth Science-University of Ottawa):
“In 1991, a senior scientist of the Danish Meteorological Institute has traced back records and graphed temperature and solar activity through the measure of amount of sunspots. And the solar activity showed a strong correlation with temperature where solar activity dropped in 1940 and started rising again in 1970.
Although in this study, they have thought this may be a coincidence, thus further study was done looking back 400 years and the same results have appeared....”
“The theory of cloud formation due to cosmic rays where cosmic rays hit the ocean surface causing much water vapor in the air contributing to the amount of clouds. This brought about another theory where when there were more sunspots, there were less cosmic rays. And with more cosmic rays, there were less sunspots.
Since sunspots give rise to strong burst of electromagnetic waves and solar wind, it is perceived that these solar winds are able to divert cosmic rays which usually come from exploded super nova.”
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The main premise for giving credence to AGW is that climactic mechanics are so complicated that no one really knows how it all works so we had better take it seriously. Just in case a fart in a hurricane does do something miraculous. And therefore those facts that can be corroborated are meaningless because there might be an unknown factor that renders those consistent findings mere anomalies.
It certainly follows the religious model well. As long as the highest premise is "Unless you know ALL that is going on all data sets are potentially invalid." the Climate Change is Evil crowd can maintain an eternal hold on climate wisdom. Man's ignorance, which is always provable because we of course are ignorant of many things, becomes the proof that both climactic disaster is possible and humans might be the cause of a disaster. We don't know enough to prove climactic disaster isn't possible which leaves the question of cause wide open in the universe of infinite possibilities. Might as well suspect ourselves since we are provably ignorant and have provably made mistakes in the past. Never mind that we can't correlate anything man has done, good or bad, to climate changes.