Cloudy Weather - Just one More Sunspot Away
Dennis Avery, Canada Free Press wrote:
When Willi Dansgaard and Hans Oeschger discovered the 1,500 year cycle in the Greenland ice cores in 1984, they knew immediately that it was solar-powered. They'd seen exactly the same cycle in the carbon 14 molecules in trees, and in the beryllium 10 molecules in ice cores. Both sets of molecules are formed when cosmic rays strike our atmosphere. The cycle had produced a whole series of dramatic, abrupt Medieval-Warming-to-Little-Ice-Age climate changes.
The IPCC, for its part, announced that the sun could not be the forcing factor in any major climate change because the solar irradiation was too small. IPCC did not, however, add up the other solar variations that could amplify the solar irradiation. Nor had the IPCC programmed its famed computer models with the knowledge of the Medieval Warming (950 - 1200 AD), the Roman Warming (200 BC - 600 AD), or the big Holocene Warmings centered on 6,000 and 8,000 BC.
The IPCC apparently wanted to dismiss the sun as a climate factor - to leave room for a CO2 factor that has only a 22 percent correlation with our past thermometer record. Correlation is not causation - but the lack of CO2 correlation is deadly to the IPCC theory.
Henrik Svensmark of the Danish Space Research Institute added the next chapter in the climate cycle story, just before our book was published. His cloud chamber experiment showed natural cosmic rays quickly created vast numbers of tiny "cloud seeds" when our mix of atmospheric gases was bombarded with ultra-violet light. Since clouds often cover 30 percent of the earth's surface, a moderate change in cloud cover clearly could explain the warming/cooling cycle.
Svensmark noted the gigantic "solar wind" that expands when the sun is active - and thus blocks many of the cosmic rays that would otherwise hit the earth's atmosphere. When the sun weakens, the solar wind shrinks. Recently, the U.S. Solar Observatory reported a very long period of "quiet sun" and predicted 30 years of cooling.
Last year, Denmark's University of Aarhus did another experiment with a particle accelerator that fully confirmed the Svensmark hypothesis: cosmic rays help to make more clouds and thus could cool the earth.