GHG set to rise by 57 percent by 2030 — that's 3 degrees C

We have to peak by 2012, or...

clipped from www.terradaily.com Emissions of greenhouse gases will rise by 57 percent by 2030 compared to current levels, leading to a rise in Earth's surface temperature of at least three degrees Celsius (5.4 degrees Fahrenheit), the International Energy Agency (IEA) said on Wednesday. The IPCC said that to limit the average increase in global temperatures to 2.4 C (4.3 F) -- the most optimistic of any of its scenarios -- the concentration of greenhouse gases would have to stabilise at 450 parts per million (ppm) of carbon dioxide (CO2) in the atmosphere. To achieve the 450ppm target would mean that CO2 from energy sources would have to peak by 2012, and this would require a massive drive in energy efficiency and switch to non-fossil fuels, the report said. "Exceptionally quick and vigorous action by all countries and unprecedented technological advances, entailing, substantial costs, would be needed to make this case a reality." the IEA said