TABLE 75/76b Carbon Dioxide Emissions by Mode: 1991-2001

TABLE 75/76b Carbon Dioxide Emissions by Mode: 1991-2001

Teragrams of CO2 Equivalent (1)

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  1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001
Passenger cars 562.4 564.8 577.6 584.3 587.2 594.3 592.8 607.9 618.6 621.7 632.7
Light-duty trucks 332.7 351.7 367.5 376.7 392.9 406.5 419.1 427.6 446.1 450.2 460.0
All other trucks 202.6 206.2 212.0 227.1 237.0 246.5 257.6 269.3 284.2 294.7 298.3
Buses 7.0 7.1 7.5 7.9 7.9 8.2 8.3 8.6 9.6 9.3 8.6
Total highway 1,105.9 1,130.9 1,165.9 1,198.1 1,226.2 1,256.6 1,278.9 1,314.7 1,359.6 1,377.2 1,400.8
Alternative fuel vehicles 1.2 1.1 1.3 2.1 1.2 1.1 1.1 1.3 1.1 1.3 1.2
Aircraft (3) 169.3 167.0 168.0 175.9 171.4 180.2 179.0 183.0 186.8 195.3 183.9
Boats and vessels 45.9 56.2 48.5 48.9 51.7 48.1 33.6 27.4 38.6 59.7 58.3
Locomotives 25.4 26.2 26.9 29.8 30.8 31.8 31.6 32.4 34.1 33.8 34.3
Other (3) 93.5 94.4 95.0 100.4 100.7 103.8 107.0 99.5 97.1 100.2 107.2
Total 1,440.0 1,474.7 1,504.3 1,553.1 1,580.8 1,620.5 1,630.1 1,657.0 1,716.2 1,766.2 1,784.5
International bunker fuels (4) 119.9 109.9 99.8 98.0 101.0 102.3 109.9 112.9 105.3 100.2 97.3

(1) Teragrams of CO2 equivalent-1 TgCO2Eq = 1 million metric ton of carbon equivalent x (44/12). A teragram equals 1 trillion grams.

(2) Aircraft emissions are from all jet fuel (less bunker fuels) and aviation gas consumption.

(3) "Other" carbon dioxide emissions are from motorcycles, construction equipment, agricultural machinery, pipelines, and lubricants.

(4) Emissions from international bunker fuels include emissions from both civilian and military activities, but are not included in totals.

NOTE: Highway total includes passenger cars, buses, light-duty trucks, and other trucks.

SOURCE: U.S. Environmental Protection Agency, Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2001, (Washington, DC: April 2003), table 1-14, also available at http://www.epa.gov, as of June 2003.