TABLE 15-3b Carbon Dioxide Emissions by Mode: 1993-2003

TABLE 15-3b Carbon Dioxide Emissions by Mode: 1993-2003

Teragrams of carbon dioxide equivalent

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  1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003
Passenger cars 584.8 589.8 592.5 598.4 595.5 613.8 622.4 623.4 625.7 639.5 633.7
Light-duty trucks 373.0 381.5 396.2 409.3 421.6 432.1 449.2 452.1 456.2 468.1 478.8
All other trucks 226.7 241.7 251.6 265.7 279.9 290.4 304.3 320.4 327.5 327.5 341.2
Buses 8.0 8.4 8.3 8.8 9.1 9.3 10.4 10.2 9.6 9.1 8.9
Total highway 1,192.6 1,221.4 1,248.7 1,282.3 1,306.0 1,345.6 1,386.2 1,406.2 1,419.0 1,444.2 1,462.5
Aircraft 168.1 176.1 171.8 180.1 179.0 181.3 186.7 193.2 183.4 174.9 171.3
Ships and boats 54.2 53.4 55.2 53.4 38.7 32.4 42.3 63.1 42.7 57.2 57.5
Locomotives 34.8 37.6 39.1 40.7 40.0 40.5 41.7 41.8 42.8 41.0 42.8
Other 46.7 50.6 51.0 51.4 54.2 48.7 49.3 48.9 46.1 49.0 46.6
Total, all modes 1,496.4 1,539.1 1,565.8 1,607.9 1,618.0 1,648.7 1,706.2 1,753.1 1,734.2 1,766.4 1,780.7
International bunker fuels 92.1 94.2 98.0 99.3 106.1 103.3 102.7 102.2 98.5 89.5 84.2

KEY: 1 teragram = 1 trillion grams.

NOTES: Other carbon dioxide emissions are from motorcycles, pipelines, and lubricants. International bunker fuel emissions (not included in the total) result from the combustion of fuels purchased in the United States but used for international aviation and maritime transportation. Thus, aircraft and ships and boats data included in U.S. total emissions involve only domestic activities of these modes as do all other data shown. Aircraft emissions consist of emissions from all jet fuel (less bunker fuels) and aviation gas consumption. Alternative-fuel vehicle emissions are allocated to the specific vehicle types in which they were classified (i.e., passenger cars, light-duty trucks, and other trucks and buses).

SOURCE: U.S. Environmental Protection Agency, Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2003 (Washington, DC: April 2005), table 2-17.