CO₂ Emissions
Total carbon dioxide emissions from fossil fuel combustion and industrial processes.
Quick Reference
Unit
Mt CO2e
Category
Energy
Metric Code
co2_emissions_mt
How It's Calculated
Total CO₂ emissions in megatons (Mt) from burning fossil fuels (coal, oil, natural gas) for energy and from industrial processes (cement production, chemical manufacturing). Based on fuel consumption data, emission factors from IPCC guidelines, and industrial production statistics. Reported to UNFCCC and compiled by World Bank, IEA, and Climate Watch. Measured in CO₂ equivalent (CO2e) to allow comparison with other greenhouse gases.
Why It Matters
CO₂ is the primary greenhouse gas driving climate change, responsible for ~75% of global warming. Total emissions indicate a country's contribution to global climate change and inform international climate negotiations under the Paris Agreement. Reducing CO₂ emissions is critical to limiting global temperature rise to 1.5-2°C. Emissions data guide national climate policies, carbon pricing, and Nationally Determined Contributions (NDCs).
Understanding the Values
Very Low: < 10 Mt (minimal impact - small countries or low industrialization) Low: 10-50 Mt (limited emissions - developing economies) Moderate: 50-200 Mt (significant but manageable - medium economies) High: 200-500 Mt (major emitter - large developed economies) Very High: 500-1,000 Mt (top 10 emitters - India, Japan, Germany) Extreme: > 1,000 Mt (top 3 emitters - China ~11,400 Mt, USA ~5,000 Mt, India ~2,600 Mt) Global total: ~37,000 Mt CO₂ (2022) Paris Agreement: Global emissions must peak by 2025 and decline 43% by 2030 (vs 2019) to limit warming to 1.5°C Note: Total emissions are less meaningful than per capita emissions for comparing countries. China emits the most CO₂ but has 1.4 billion people; Qatar has highest per capita emissions (~37 tons/person vs China ~8 tons/person).
Related Metrics
Air Transport Passengers Carried
Total number of passengers carried by air carriers registered in the country, including domestic and international flights.
Forest Area
Land area covered by forests, expressed as a percentage of total land area.
GDP per Capita
Gross Domestic Product divided by population, measuring average economic output per person.
Renewable Energy Consumption
Renewable energy consumption as percentage of total final energy consumption.
Data Quality & Coverage
Coverage: 217 countries Update frequency: Annual (with 1-2 year lag) Source: World Bank / Climate Watch / IEA CO₂ Emissions from Fuel Combustion Limitations: Does not include land use change (deforestation, agriculture) which adds ~6,000 Mt CO₂e annually. Does not include methane, nitrous oxide, or other greenhouse gases. Reported emissions depend on countries self-reporting to UNFCCC - verification challenging. Historical emissions (cumulative since 1850) not captured but matter for climate justice debates. Does not account for consumption-based emissions (imports of goods made elsewhere).