Professor Ian Plimer of the University of Adelaide is of the view that humans are naive enough to think that they can change astronomical and solar processes?
Addressing the Australasian Institute of Mining and Metallurgy in Sydney, Professor Plimer said he was able to correlate global climates with solar activity after carrying out research on the history of the sun, the solar system and monitoring supernovae activity.
"Co-relations don't mean anything, you really need a causation," news.com.au quoted Plimer, as saying.
Examining how cosmic radiation builds up clouds, Plimer opined that a very active sun blows away cosmic radiation, while a less active sun allows radiation to build up.
"So, you can very much tie in temperature, cloud formation, cosmic radiation and the sun," he said.
Examining the sources of carbon dioxide, he said he found that about 0.1 per cent of the atmospheric carbon dioxide was due to human activity and much of the rest due to little-understood geological phenomena.
He also argued that major processes of earthquake activity and volcanic activity in the mid-ocean ridges, rather than any increase in greenhouse gases caused climatic phenomenon like El Nino and La Nina.
The melting of polar ice, he said, had nothing to do with man-made carbon dioxide. They come off due to the physics of ice and the flow of ice, Plimer said.
Plimer said the planet was already at the maximum absorbance of energy of carbon dioxide, any more would have no greater effect.
He conceded that the politics of greenhouse gas emissions meant that attention was being given to energy efficiency, which he supported.
The professor, who is writing a book on the subject, said he only used validated scientific data, published in reputable peer-reviewed refereed journals, as the basis of his theories.
