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Svensmark publishes: Solar activity has a direct impact on Earth’s cloud cover

August 25, 2016

Watts Up With That?

From Denmark Technical University
Solar activity has a direct impact on Earth’s cloud cover

Solar variations affect the abundance of clouds in our atmosphere, a new study lead by DTU Space suggests. Large eruptions on the surface of the Sun can temporarily shield Earth from so-called cosmic rays which now appear to affect cloud formation. A team of scientists from the National Space Institute at the Technical University of Denmark (DTU Space) and the Racah Institute of Physics at the Hebrew University of Jerusalem has linked large solar eruptions to changes in Earth’s cloud cover in a study based on over 25 years of satellite observations.

The solar eruptions are known to shield Earth’s atmosphere from cosmic rays. However the new study, published in Journal of Geophysical Research: Space Physics, shows that the global cloud cover is simultaneously reduced, supporting the idea that cosmic rays are important for cloud formation…

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