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International Affairs Division

Relevant Data

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World's CO2 Emissions in 2006

  • The world's CO2 emissions in 2006 were 28 billion tons (gigaton, Gt), among which the transport sector was responsible for 23%, or 6.45 Gt.
  • United States and China emitted two-fifths of the world's CO2 emissions.

World's CO2 Emissions by Sector in 2006*1 *2

World's CO2 Emissions by Sector in 2006

World's CO2 Emissions by Country in 2006*1 *3 *4

World's CO2 Emissions by Country in 2006

*1) CO2 emissions from fuel combustion.

*2) Emissions from international aviation and maritime shipping are included in the transport sector.

*3) Emissions from international aviation and maritime shipping are not allocated to each country.

*4) Emissions in Laos are included in "Other."

Source: International Energy Agency (IEA) (2008), CO2 Emissions from Fuel Combustion, 2008 Edition.

Transport CO2 Emissions in 2006

  • The transport sector in the world emitted 6.45 Gt in 2006, among which the MEET participating countries were responsible for 54%, or 3.83 Gt.
  • With emissions from international aviation and maritime shipping, the MEET Conference covers 69% of all transport CO2 emissions.
  • According to IEA estimates, the worldwide transport CO2 emissions will increase by 1.4 times to 8.9 Gt by 2030.
  • Particularly, transport CO2 emissions from developing countries will double in the next quarter century, which makes it urgent to accelerate international efforts to achieve both economic development and environmental protection.

Transport CO2 Emissions by Country in 2006*1 *2 *3

Transport CO2 Emissions by Country in 2006

Trends in Transport CO2 Emissions: 1980-2030*1 *2

Trends in Transport CO2 Emissions: 1980-2030

*1) CO2 emissions from fuel combustion.

*2) Emissions from international aviation and maritime shipping are not allocated to each country.

*3) Emissions in Laos are included in "Other."

Source: International Energy Agency (IEA) (2008), CO2 Emissions from Fuel Combustion, 2008 Edition; IEA (2008), World Energy Outlook 2008.

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(Last updated: December 24, 2008)