Center for Climate Change and Environmental Forecasting

U.S. Greenhouse Gas Emissions from Mobile Sources (Tg CO2
Eq.)

Gas
1990
1995
2000
2001
2002
2003
2004

CO2
1476.2
1565.3
1782.3
1768.1
1813.1
1815.5
1870.4

CH4
4.5
4.9
3.3
3.1
2.9
2.8
2.7

N2O
42.7
60.9
52.1
48.9
46.4
43.7
41.6

HFCs
-
8.9
32.6
36.1
38.9
41.2
45.0

Total*
1523.4
1640.0
1870.3
1856.2
1901.4
1903.1
1959.8

* Does not include international bunker fuels.