Global, Regional, and National Fossil Fuel CO2 Emissions

GLOBAL

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Trends

Since 1751 roughly 315 billion tons of carbon have been released to the atmosphere from the consumption of fossil fuels and cement production. Half of these emissions have occurred since the mid 1970s. The 2004 global fossil-fuel CO2 emission estimate, 7910 million metric tons of carbon, represents an all-time high and a 5.4% increase from 2003.

Globally, liquid and solid fuels accounted for 77.5% of the emissions from fossil-fuel burning in 2004. Combustion of gas fuels (e.g., natural gas) accounted for 18.1% (1434 million metric tons of carbon) of the total emissions from fossil fuels in 2004 and reflects a gradually increasing global utilization of natural gas. Emissions from cement production (298 million metric tons of carbon in 2004) have more than doubled since the mid 1970s and now represent 3.8% of global CO2 releases from fossil-fuel burning and cement production. Gas flaring, which accounted for roughly 2% of global emissions during the 1970s, now accounts for less than 1% of global fossil-fuel releases.

CITE AS: Marland, G., T.A. Boden, and R. J. Andres. 2007. Global, Regional, and National CO2 Emissions. In Trends: A Compendium of Data on Global Change. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tenn., U.S.A.
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