Peer-Reviewed Study Finds CO2 Not Responsible for Recent Global Warming

Published June 20, 2013

Carbon dioxide emissions are not the primary factor driving recent global warming, a newly published peer-reviewed paper reports. To the extent humans are enhancing the natural recovery from the Little Ice Age, CFCs (chlorofluorocarbons) are the primary driver, according to University of Waterloo (Ontario) physics professor Qing-Bin Lu.

CFC Decline Halting Warming
“Conventional thinking says that the emission of human-made non-CFC gases such as carbon dioxide has mainly contributed to global warming. But we have observed data going back to the Industrial Revolution that convincingly shows that conventional understanding is wrong,” said Lu in a press release accompanying his study.

“My calculations of CFC greenhouse effect show that there was global warming by about 0.6 °C from 1950 to 2002, but the earth has actually cooled since 2002. The cooling trend is set to continue for the next 50-70 years as the amount of CFCs in the atmosphere continues to decline,” Lu predicted.

Strong Link with Cosmic Rays
“It was generally accepted for more than two decades that the Earth’s ozone layer was depleted by the sun’s ultraviolet light-induced destruction of CFCs in the atmosphere,” Lu explained. “But in contrast, CRE [cosmic-ray-driven electron-reaction] theory says cosmic rays—energy particles originating in space—play the dominant role in breaking down ozone-depleting molecules and then ozone.”

“Lu’s theory has been confirmed by ongoing observations of cosmic ray, CFC, ozone and stratospheric temperature data over several 11-year solar cycles,” the press release explains.

‘Almost Perfect Correlation’
“CRE is the only theory that provides us with an excellent reproduction of 11-year cyclic variations of both polar ozone loss and stratospheric cooling,” said Lu in the press release. “After removing the natural cosmic-ray effect, my new paper shows a pronounced recovery by ~20% of the Antarctic ozone hole, consistent with the decline of CFCs in the polar stratosphere.”

“By demonstrating the link between CFCs, ozone depletion and temperature changes in the Antarctic, Professor Lu was able to draw almost perfect correlation between rising global surface temperatures and CFCs in the atmosphere,” noted the press release.

James M. Taylor ([email protected]) is managing editor of Environment & Climate News.

Internet Info:

Q.-B. Lu, “Cosmic-Ray-Driven Reaction and Greenhouse Effect of Halogenated Molecules: Culprits for Atmospheric Ozone Depletion and Global Climate Change,” International Journal of Modern Physics B,

“Global Warming Caused by CFCs, Not Carbon Dioxide, Researcher Claims in Controversial Study,” ScienceDaily, May 30, 2013,