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Svensmark’s cosmic ray theory: two steps forward, one step back

October 7, 2013

Watts Up With That?

From CERN: CERN’s CLOUD experiment shines new light on climate change

Geneva, 6 October 2013. In a paper published today in the journal Nature, the CLOUD experiment at CERN1 reports a major advance towards solving a long-standing enigma in climate science: how do aerosols – tiny solid or liquid particles suspended in the air – form in the atmosphere, and which gases are responsible? This is a key question in understanding the climate, since aerosols cause a cooling effect by reflecting sunlight and by seeding cloud droplets.

The CLOUD researchers made two key discoveries. Firstly, they found that minute concentrations of amine vapours combine with sulphuric acid to form aerosol particles at rates similar to those observed in the atmosphere. Then, using a pion beam from the CERN Proton Synchrotron, they found that ionising radiation such as the cosmic radiation that bombards the atmosphere from space has negligible…

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