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Global Warming
Volcanoes

What is the amount of co2 produced by volcanoes in relation to that produced by man?

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January 03, 2010 6:40AM

On average less than 1%. It is estimated that volcanoes emit on average 200 million tonnes of CO2 a year. This includes all volcanoes, hot springs and and undersea hydrothermal vents. Humans emit 26 billion tonnes (2003) a year by burning fossil fuels. The gas burnt onsite at oil wells in gas flares accounts for more CO2 emissions than all volcanoes put together.