Solar activity only a minor factor in global warming
By Summit Voice
FRISCO — The sun’s activity is only a minor factor in 20th century global warming, a new study once again confirms, shooting down one of the red-herring arguments put forth by climate science deniers.
At most, solar cycles have contributed no more than 10 per cent to global warming in the last century. The findings, made by Professor Terry Sloan at the University of Lancaster and Professor Sir Arnold Wolfendale at the University of Durham, find that neither changes in the activity of the Sun, nor its impact in blocking cosmic rays, can be a significant contributor to global warming.
“Our paper reviews our work to try and find a connection between cosmic rays and cloud formation with changes in global temperature,” Sloan said. “We conclude that the level of contribution of changing solar activity is less than 10 per cent of the measured global warming observed in the twentieth century. As a result of this and other work, the IPCC state that no robust association between changes in cosmic rays and cloudiness has been identified.” (more…)