Another known unknown – volcanic outgassing of CO2

Not to mention what’s happening underwater where they emit liquid CO2….

Watts Up With That?

Medicine Lake Volcano from Schonchin Butte, La... Medicine Lake Volcano from Schonchin Butte, Lava Beds National Monument (Photo credit: Ray Bouknight)

It seems there’s really no complete measurements on how much CO2 is coming out of volcanoes, both active and inactive.

From Livescience: Long Invisible, Research Shows Volcanic CO2 Levels Are Staggering (Op-Ed)

In 1992, it was thought that volcanic degassing released something like 100 million tons of CO2 each year. Around the turn of the millennium, this figure was getting closer to 200. The most recent estimate, released this February, comes from a team led by Mike Burton, of the Italian National Institute of Geophysics and Volcanology – and it’s just shy of 600 million tons. It caps a staggering trend: A six-fold increase in just two decades.

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