Global emissions of carbon dioxide from energy use rose 1.4 percent to 31.6 gigatons in 2012, setting a record and putting the planet on course for temperature increases well above international climate goals, the International Energy Agency said in a report scheduled to be issued Monday.
The agency said continuing that pace could mean a temperature increase over pre-industrial times of as much as 5.3 degrees Celsius (9 degrees Fahrenheit), which IEA chief economist Fatih Birol warned “would be a disaster for all countries.”
“This puts us on a difficult and dangerous trajectory,” Birol said. “If we don’t do anything between now and 2020, it will be very difficult because there will be a lot of carbon already in the atmosphere and the energy infrastructure will be locked in.”
The energy sector accounts for more than two-thirds of greenhouse gas emissions, so “energy has a crucial role to play in tackling climate change,” the IEA said. Its report urged nations to take four steps, including aggressive energy-efficiency measures, by 2015 to keep alive any hope of limiting climate change to 2 degrees Celsius.
The United States was one of the few relatively bright spots in the report. Switches from coal to shale gas accounted for about half the nation’s 3.8 percent drop in energy-related emissions, which fell for the fourth time in the past five years, dipping to a level last seen in the 1990s. The other factors were a mild winter, declining demand for gasoline and diesel, and the increasing use of renewable energy.