US Climate Change Science Program – The First State of the Carbon Cycle Report (SOCCR): The North American Carbon Budget and Implications for the Global Carbon Cycle. A Report by the U.S. Climate Change Science Program and the Subcommittee on Global Change Research [King, A.W., L. Dilling, G.P. Zimmerman, D.M. Fairman, R.A. Houghton, G. Marland, A.Z. Rose, and T.J. Wilbanks (eds.)]. National Oceanic and Atmospheric Administration, National Climatic Data Center, Asheville, NC, USA, 242 pp. Printed copies will be available Winter 2008. Final Report. Note: All links are to PDF files.
Entire Report and Executive Summary
“North America is currently a net source of CO2 to the atmosphere, contributing to the global buildup of greenhouse gases in the atmosphere and associated changes in the Earths climate. In 2003, North America emitted nearly two billion metric tons of carbon to the atmosphere as CO2. North Americas fossil-fuel emissions in 2003 (1856 million metric tons of carbon ±10% with 95% certainty) were 27% of global emissions. Approximately 85% of those emissions were from the United States, 9% from Canada, and 6% from Mexico. The combustion of fossil fuels for commercial energy (primarily electricity) is the single largest contributor, accounting for approximately 42% of North American fossil emissions in 2003. Transportation is the second largest, accounting for 31% of total emissions.”
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