Note this phenomenon has actually been replicated in a laboratory; it doesn't rely on unvalidated computer models.
Note this phenomenon has actually been replicated in a laboratory; it doesn't rely on unvalidated computer models.
Last I'm aware, most "climate change" computer models don't even take into account varying cloud cover. And, yes, the experimental apparatus is called a "cloud chamber".
The basic idea is that when an increased number of galactic cosmic rays (electrically charged particles from outside the solar system) reach the atmosphere a greater number of sun-blocking clouds are formed, thus leading to cooler times. But during periods of increased solar activity, more cosmic rays are deflected away from Earth than usual, less Sun-blocking clouds form, and the Earth warms (naturally).
100,000-Year Climate Pattern Linked To Sun's Magnetic Cycles:
ScienceDaily (Jun. 7, 2002) HANOVER, N.H.
Thanks to new calculations by a Dartmouth geochemist, scientists are now looking at the earth's climate history in a new light. Mukul Sharma, Assistant Professor of Earth Sciences at Dartmouth, examined existing sets of geophysical data and noticed something remarkable: the sun's magnetic activity is varying in 100,000-year cycles, a much longer time span than previously thought, and this solar activity, in turn, may likely cause the 100,000-year climate cycles on earth. This research helps scientists understand past climate trends and prepare for future ones.
http://www.sciencedaily.com/releases/2002/06/020607073439.htm
Note: their section on this topic has changed in recent years.
http://www.space.dtu.dk/english/Research/Climate_and_Environment
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Amazon Books: "The Chilling Stars, 2nd Edition: A Cosmic View of Climate Change"
http://www.amazon.com/Chilling-Stars-2nd-Cosmic-Climate/dp/1840468661 zs90]