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Wiley InterScience | ||||||||||
  Astronomy & GeophysicsVolume 48 Issue 1, Pages 1.18 - 1.24 Published Online: 25 Jan 2007 © 2010 Royal Astronomical Society Published on behalf of the Royal Astronomical Society
Abstract | References | Full Text: HTML, PDF (Size: 502K) | Related Articles | Citation Tracking  Cosmoclimatology: a new theory emerges I thank Nigel Calder FRAS for suggesting this article and assisting in its preparation. Copyright Royal Astronomical Society ABSTRACTHenrik Svensmark draws attention to an overlooked mechanism of climate change: clouds seeded by cosmic rays. Abstract
Changes in the intensity of galactic cosmic rays alter the Earth's cloudiness. A recent experiment has shown how electrons liberated by cosmic rays assist in making aerosols, the building blocks of cloud condensation nuclei, while anomalous climatic trends in Antarctica confirm the role of clouds in helping to drive climate change. Variations in the cosmic-ray influx due to solar magnetic activity account well for climatic fluctuations on decadal, centennial and millennial timescales. Over longer intervals, the changing galactic environment of the solar system has had dramatic consequences, including Snowball Earth episodes. A new contribution to the faint young Sun paradox is also on offer. | 
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