The biggest contributor to global net anthropogenic greenhouse gas (GHG) emissions in 2021 was the energy sector, which released 20.7 billion metric tons of carbon dioxide equivalent (GtCO₂e) into the atmosphere. Agriculture, forestry, and other land uses was the second-largest source of GHG emissions in 2021. These emissions were mainly released from land use, land use change, and forestry (LULUCF) and enteric fermentation. Meanwhile, global transportation emitted 8.1 GtCO₂e, with road transportation emissions accounting for more than 70 percent of this total.
Greenhouse gas emissions worldwide in 2021, by sector
(in billion metric tons of carbon dioxide equivalent)
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Emissions in billion metric tons of carbon dioxide equivalent
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WRI, & Systems Change Lab. (November 14, 2023). Greenhouse gas emissions worldwide in 2021, by sector (in billion metric tons of carbon dioxide equivalent) [Graph]. In Statista. Retrieved July 27, 2024, from https://www.statista.com/statistics/1341795/ghg-emissions-by-sector-globally/
WRI, und Systems Change Lab. "Greenhouse gas emissions worldwide in 2021, by sector (in billion metric tons of carbon dioxide equivalent)." Chart. November 14, 2023. Statista. Accessed July 27, 2024. https://www.statista.com/statistics/1341795/ghg-emissions-by-sector-globally/
WRI, Systems Change Lab. (2023). Greenhouse gas emissions worldwide in 2021, by sector (in billion metric tons of carbon dioxide equivalent). Statista. Statista Inc.. Accessed: July 27, 2024. https://www.statista.com/statistics/1341795/ghg-emissions-by-sector-globally/
WRI, and Systems Change Lab. "Greenhouse Gas Emissions Worldwide in 2021, by Sector (in Billion Metric Tons of Carbon Dioxide Equivalent)." Statista, Statista Inc., 14 Nov 2023, https://www.statista.com/statistics/1341795/ghg-emissions-by-sector-globally/
WRI & Systems Change Lab, Greenhouse gas emissions worldwide in 2021, by sector (in billion metric tons of carbon dioxide equivalent) Statista, https://www.statista.com/statistics/1341795/ghg-emissions-by-sector-globally/ (last visited July 27, 2024)
Greenhouse gas emissions worldwide in 2021, by sector (in billion metric tons of carbon dioxide equivalent) [Graph], WRI, & Systems Change Lab, November 14, 2023. [Online]. Available: https://www.statista.com/statistics/1341795/ghg-emissions-by-sector-globally/