1 Teragrams of CO2 equivalent—1
TgCO2 Eq
= 1 million metric ton of carbon equivalent x (44/12). A teragram = 1
trillion grams.
2 "Other"
carbon dioxide emissions are from motorcycles, construction equipment,
agricultural machinery, pipelines, and lubricants.
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.