U.S. CARBON DIOXIDE EMISSIONS AND INTENSITIES OVER TIME: A DETAILED ACCOUNTING OF INDUSTRIES, GOVERNMENT AND HOUSEHOLDS

Greenhouse gas emissions have increased markedly since the pre-industrial era and are
increasing at such a rate that their concentration in the atmosphere is producing a warming
influence on the global climate. In order to make well-informed decisions on ways to
reduce greenhouse gas emissions, it is importantto understand how the different economic
sectors contribute to the production of greenhouse gases, which sectors are relatively
carbon dioxide (CO2) intensive, and how these patterns have evolved over time. To that
end, this report analyzes energy-related CO2emissions and intensities for 349 industries,
Government (Federal, state and local), and Households for the 1998 to 2006 period. The
349 industries cover the entireeconomy, providing information on detailed subsectors
within the aggregate sectors of Agriculture, Forestry and Fisheries,Mining, Construction,
Manufacturing, Transportation Services, and All Other Services. CO2intensities for
industries and Government refer to the emissions produced per billion dollars of output.
CO2intensities for Households are measured by emissions per thousand households.