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Switch to Forum Live View Volcanic vs. Anthropogenic CO2
3 years ago  ::  Aug 20, 2011 - 12:42PM #1
JRT
Posts: 338

A common claim made by anthropogenic  global warming denialists is that volcanic CO2 emissions far exceed human-caused emissions. The data is now in that this is a spurious claim: 

www.realclimate.org/index.php/archives/2...



The bottom line? Annual anthropogenic CO2 emissions exceed annual volcanic CO2 by two orders of magnitude, and probably exceed the CO2 output of one or more super-eruptions.  Super-eruptions are extremely rare, with recurrence intervals of 100,000–200,000 years; none have occurred historically, the most recent examples being Indonesia’s Toba volcano, which erupted 74,000 years ago, and the United States’ Yellowstone caldera, which erupted 2 million years ago.

the floggings will continue until morale improves
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3 years ago  ::  Aug 21, 2011 - 9:31AM #2
JRT
Posts: 338

Just in case no-one noticed, the term "two orders of magnitude" does not mean 'two times' greater but rather 'one hundred times' greater.

the floggings will continue until morale improves
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3 years ago  ::  Aug 28, 2011 - 4:02AM #3
Karma_yeshe_dorje
Posts: 11,676

At issue for the denialists, is fatalism. "There's nothing you can do; give up!". I would like to imagine that there might be something that one could do, to lessen bad effects.

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