The heat content , or the amount of energy produced when a fuel is burned, is mainly determined by the carbon C and hydrogen H content of the fuel. Heat is produced when C and H combine with oxygen O during combustion. Natural gas is primarily methane CH 4 , which has a higher energy content relative to other fuels, and thus, it has a relatively lower CO 2 -to-energy content.
Water and various elements, such as sulfur and noncombustible elements in some fuels, reduce their heating values and increase their CO 2 -to-heat contents. Learn more: What are the greenhouse gas and air pollutant emissions factors for fuels and electricity? Carbon dioxide emissions per physical unit and million Btu for numerous fuels Why do carbon dioxide emissions weigh more than the original fuel? It is highest in Russia and China with the United States below the world average.
Energy production of all types accounts for 72 percent of all emissions. CO2 accounts for about 76 percent of total greenhouse gas emissions. Methane, primarily from agriculture, contributes 16 percent of greenhouse gas emissions and nitrous oxide, mostly from industry and agriculture, contributes 6 percent to global emissions. All figures here are expressed in CO2-equivalents.
Inventory of U. Our World in Data Tags Emissions. Apply market research to generate audience insights. Measure content performance. Develop and improve products. List of Partners vendors. Carbon dioxide CO2 is an odorless gas that is highly important to life on Earth. CO2 is also known as a greenhouse gas; an excessive concentration can disrupt the natural regulation of temperature in the atmosphere and lead to global warming. The concentration of CO2 has especially increased as a result of the industrial revolution and exponential growth in manufacturing activities around the world.
Deforestation, agriculture, and fossil fuel use are the primary sources of CO2. China is the largest emitter of carbon dioxide gas in the world, with Also, China is one of the largest importers of oil, which contributes to large CO2 emissions through the country's use of motor vehicles.
The U. Also, the U. Another large contributor to CO2 emissions in the U. India is the third-largest emitter of CO2 in the world; it produced about 2.
India's CO2 footprint is bound to go up in the future. Russia is the fourth largest contributor to CO2 emissions in the world, with 1. Japan is the fifth-largest emitter of CO2 worldwide, producing 1.
After the nuclear reactors in Fukushima were shut down in , dependence on fossil fuels increased even more. Earth System Science Data. Then you will be able to mark statistics as favourites and use personal statistics alerts. Save statistic in. XLS format. PNG format. PDF format. Show details about this statistic. Exclusive Premium functionality. Register in seconds and access exclusive features. Full access: To this and over 1 million additional datasets Save Time: Downloads allow integration with your project Valid data: Access to all sources and background information.
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