Last Thursday, the Global Carbon Project released its annual report on the state of the carbon cycle, Carbon Budget 2007 [PDF]. It emphasizes (as we reported earlier this year) that CO2 levels are continuing upward, and the rate of increase is accelerating.
One reason for the acceleration in CO2 concentrations is higher fossil fuel emissions. Despite rising fuel prices, global CO2 emissions from fossil fuels rose 3 percent in 2007. That’s just slightly below the average increase of 3.5 percent per year since 2000.