Posted in | News | Wind Power

Downturn in Carbon Efficiency Fuels CO2 Increase

A team of scientists has found that atmospheric carbon dioxide (CO2) growth has increased 35 per cent faster than expected since 2000. The findings are published this week in the journal Proceedings of the National Academy of Sciences (PNAS).

The study 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 by the Global Carbon Project, the University of East Anglia (UEA) and the British Antarctic Survey (BAS) 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 (used as a reference year in the Kyoto Protocol).

Author Dr Corinne Le Quéré of the University of East Anglia and British Antarctic Survey said: “The decline in global sink efficiency suggests stabilisation of atmospheric CO2 is even more difficult to achieve than previously thought. We found that nearly half of the decline in the efficiency of the ocean CO2 sink is due to the intensification of the winds in the Southern Ocean”.

The study’s lead author, Dr Pep Canadell, executive director of the Global Carbon Project, said: “In addition to the growth of global population and wealth, we now know that significant contributions to the growth of atmospheric CO2 arise from the slow-down of natural sinks and the halt to improvements in the carbon intensity of wealth production.”

'Contributions to accelerating atmospheric CO2 growth from economic activity, carbon intensity, and efficiency of natural sinks' by Josep Canadell, Corinne Le Quéré, Michael Raupach, Christopher Field, Erik Buitenhuis, Philippe Ciais, Thomas Conway, Nathan Gillett, RA Houghton and Gregg Marland is published on Monday October 22 in the Proceedings of the National Academy of Sciences of the United States of America.

Tell Us What You Think

Do you have a review, update or anything you would like to add to this news story?

Leave your feedback
Your comment type
Submit

While we only use edited and approved content for Azthena answers, it may on occasions provide incorrect responses. Please confirm any data provided with the related suppliers or authors. We do not provide medical advice, if you search for medical information you must always consult a medical professional before acting on any information provided.

Your questions, but not your email details will be shared with OpenAI and retained for 30 days in accordance with their privacy principles.

Please do not ask questions that use sensitive or confidential information.

Read the full Terms & Conditions.