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Scientists report solar activity has minor role in climate change

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Solar activity has a minor effect on climate change and has had a minor effect on climate compared to other natural phenomena and man-made causes according to new research published in the Dec. 22, 2013, issue of the journal Nature Geoscience by researchers from the University of Edinburgh's School of Geosciences.

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This discovery overturns presently held beliefs that solar activity has been and continues to be a major player in climate change.

The scientists examined tree growth rings and reported weather and solar phenomena for the last 1,000 years in the northern hemisphere of Earth and found no evidence that solar activity was a cause of climate change.

The researchers correlated solar activity with climate change in a computer simulation and found no large scale support for the idea that climate change is caused by solar activity.

Volcanic eruptions and the particulate matter from these eruptions that spread across the globe were the major climate change factor until 1800 according to the data from the research. Volcanic dust produces a cooling effect on the Earth’s climate. The cooling effect can account for all know colder than normal winters and summers over the last 10 centuries.

The researchers conclude that man-made causes for climate change have predominated since 1800.



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