Date: 2024-12-14 Page is: DBtxt003.php txt00005823 | |||||||||
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Global Greenhouse Gas Emissions Data ON THIS PAGE Global Emissions by Gas Global Emissions by Source Trends in Global Emissions Emissions by Country Global Greenhouse Gas Emissions by Gas
Pie chart that shows different types of gases. 57 percent is from carbon dioxide fossil fuel use. 17 percent is from carbon dioxide deforestation, decay of biomass, etc. 3 percent is from other carbon dioxide sources. 14 percent is from methane. 8 percent is from nitrous oxide and 1 percent is from fluorinated gases. Source: IPCC (2007); Exit EPA Disclaimer based on global emissions from 2004. Details about the sources included in these estimates can be found in the Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change . Exit EPA Disclaimer At the global scale, the key greenhouse gases emitted by human activities are:
Global Greenhouse Gas Emissions by Source
Pie chart that shows different sectors.
Source: IPCC (2007); Exit EPA Disclaimer based on global emissions from 2004. Details about the sources included in these estimates can be found in the Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change . Exit EPA Disclaimer Global greenhouse gas emissions can also be broken down by the economic activities that lead to their production. [1]
Note on emissions sector categories. Trends in Global Emissions Global Carbon Dioxide (CO2) emissions from fossil-fuels 1900-2008
The line graph shows a slow increase from about 2,500 teragrams of carbon dioxide emissions in 1900 to about 5,000 teragrams of carbon dioxide emissions in 1950. After 1950, the increase in carbon dioxide emissions is more rapid, reaching approximately 32,000 teragrams of carbon dioxide in 2008. Source of data: Boden, T.A., G. Marland, and R.J. Andres (2010). Global, Regional, and National Fossil-Fuel CO2 Emissions. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tenn., U.S.A. doi 10.3334/CDIAC/00001_V2010. Global carbon emissions from fossil fuels have significantly increased since 1900. Emissions increased by over 16 times between 1900 and 2008 and by about 1.5 times between 1990 and 2008. “Emissions of non-CO2 greenhouse gases have also increased significantly since 1900. To learn more about past and projected global emissions of non-CO2 gases, please see the EPA report {Global Anthropogenic Non-CO2 Emissions: 1990-2000}. 2008 Global CO2 Emissions from Fossil Fuel Combustion and some Industrial Processes (million metric tons of CO2) Pie chart that shows country share of greenhouse gas emissions. 23 percent comes from China; 19 percent from the United States; 13 percent from the EU-27 (excluding Estonia, Latvia, and Lithuania); 6 percent from India; 6 percent from the Russian Federation; 4 percent from Japan; 2 percent from Canada; and 28 percent from other countries. Source: National CO2 Emissions from Fossil-Fuel Burning, Cement Manufacture, and Gas Flaring: 1751-2008. Emissions by Country
In 2008, the top carbon dioxide (CO2) emitters were China, the United States, the European Union, India, the Russian Federation, Japan, and Canada. These data include CO2 emissions from fossil fuel combustion, as well as cement manufacturing and gas flaring. Together, these sources represent a large proportion of total global CO2 emissions. Emissions and sinks related to changes in land use are not included in these estimates. However, changes in land use can be important - global estimates indicate that deforestation can account for 5 billion metric tons of CO2 emissions, or about 16% of emissions from fossil fuel sources. Tropical deforestation in Africa, Asia, and South America are thought to be the largest contributors to emissions from land-use change globally. [3] In areas such as the United States and Europe, changes in land use associated with human activities have the net effect of absorbing CO2, partially offsetting the emissions from deforestation in other regions. References 1. IPCC (2007). Climate Change 2007: Mitigation of Climate Change . Exit EPA Disclaimer Contribution of Working Group III to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change B. Metz, O.R. Davidson, P.R. Bosch, R. Dave, L.A. Meyer (eds). Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA. 2. NRC (2010). Advancing the Science of Climate Change . Exit EPA Disclaimer National Research Council. The National Academies Press, Washington, DC, USA. 3. Houghton, R.A. (2008). Carbon Flux to the Atmosphere from Land-Use Changes: 1850-2005. In TRENDS: A Compendium of Data on Global Change. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tenn., U.S.A. Related Links EPA resources Greenhouse Gas Emissions Sources of Greenhouse Gas Emissions (in the United States) Non-CO2 Greenhouse Gases: Emissions and Trends Other resources Exit EPA Disclaimer Carbon Dioxide Information Analysis Center Gapminder World National Inventory Submissions World Development Indicators World Resources Institute's Climate Analysis Indicators Tool (CAIT) |