From press releases:
Research by the Global Carbon Project, the University of East Anglia (UEA) and the British Antarctic Survey (BAS) shows that atmospheric carbon dioxide (CO2) growth has increased 35 percent faster than expected since 2000.
The paper, “Contributions to accelerating atmospheric CO2 growth from economic activity, carbon intensity, and efficiency of natural sinks," found that inefficiency in the use of fossil fuels increased levels of CO2 by 17 percent, while the other 18 percent came from the decline in the efficiency of natural land and ocean sinks which soak up CO2 from the atmosphere.
The research also shows that improvements in the carbon intensity of the global economy have stalled since 2000 after improving for 30 years, leading to the unexpected growth of atmospheric CO2. . . .
The study also states that global CO2 emissions were up to 9.9 billion tons of carbon in 2006, 35 percent above emissions in 1990.
The Southern Ocean winds have increased in response to greenhouse gases and ozone depletion. The increase in winds has led to a release of natural CO2 stored in the deep ocean, which is preventing further absorption of the greenhouse gas.
According to another report on the study, the present atmospheric concentration of carbon dioxide is 381 ppm, the largest concentration in the last 650,000 years, and probably in the last 20 million years.