If you have been a victim of the rumour, persistent in some circles, that volcanic CO2 emissions dwarf those of human activity, now is the time to be liberated.What I hadn't seen before was the estimate that human CO2 production was on the order of 100 times that of volcanoes. Wow.
According to the British Geological Survey:
The contribution to the present day atmospheric CO2 loading from volcanic emissions is, however, relatively insignificant, and it has been estimated that subaerial volcanism releases around 300 Mt/yr CO2.The US Geological Survey estimate is lower still:
Volcanoes emit … about 130–230 million tonnes of CO2 into the atmosphere every year. This estimate includes both subaerial and submarine volcanoes, about in equal amounts.
Is This Your Hat?
2 years ago