Climate: Study sees 5C warming

Levels of atmospheric carbon dioxide (CO2) are rising annually by around three percent, placing Earth on track for warming that could breach five degrees Celsius (9.0 degrees Fahrhenheit) by 2100, a new study published on Sunday said.

The figure -- among the most alarming of the latest forecasts by climate scientists -- is at least double the 2C (3.6F) target set by UN members struggling for a global deal on climate change.

In 2011, global carbon emissions were 54 percent above 1990 levels, according to the research, published in the journal Nature Climate Change by the Global Carbon Project consortium. "We are on track for the highest emissions projections, which point to a rise in temperature of between 4C (7.2F) and 6C (10.8F) by the end of the century," said Corinne le Quere, a carbon specialist at the University of East Anglia, eastern England.

"The estimate is based on growth trends that seem likely to last," she said in a phone interview, pointing to the mounting consumption of coal by emerging giants.

AFP