Actually I heard some time ago that the Icelandic volcano set the world back a further 3 years of carbon dioxide savings...however with a bit of quick google'ing:Master Rahl wrote:*as one small volcano goes dumping hundreds of thousands of tons of cool crap into the atmosphere* just waiting on Krakatoa and Yellow Stone to go sending us into another ice age....
http://www.skepticalscience.com/volcano ... arming.htmPublished reviews of the scientific literature by Moerner and Etiope (2002) and Kerrick (2001) report a minimum-maximum range of emission of 65 to 319 million tonnes of CO2 per year. Counter claims that volcanoes, especially submarine volcanoes, produce vastly greater amounts of CO2 than these estimates are not supported by any papers published by the scientists who study the subject.
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The burning of fossil fuels and changes in land use results in the emission into the atmosphere of approximately 30 billion tonnes of carbon dioxide per year worldwide, according to the EIA.
So on a worldwide scale it's not producing more, clearly, although how much the world is trying to offset...couldn't find much on that but I would assume maybe 20% of the total, which is still more.