Victoria, Canada (October 6, 2007)- A study published in Geophysical Research Letters finds that global greenhouse gas emissions must be reduced to zero by 2050 in order to remain within a 2°C rise in the average global temperature due to global warming. An increase of 2°C above pre-industrial temperatures has been cited by the European Union as the threshold beyond which the world will face “dangerous” climate change.
Andrew Weaver led the study at the University of Victoria in Canada using a computer model to determine how much emissions must be limited in order to avoid exceeding a 2°C increase. The study’s findings demonstrate the contrast between the policy goals of nations around the world and what needs to be done, Dr. Weaver says. “There is a disconnect between the European Union arguing for a 2°C threshold and calling for 50 percent cuts at 2050-you can’t have it both ways,” says Weaver. “If you’re going to talk about 2°C you have got to be talking 90 percent emissions cuts.”
Geophysical Research Letters
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