2011-06-15 22:14:35Argument 71 in need of an update? - here's some ammo
Rob Painting

Volcanic Versus Anthropogenic Carbon Dioxide - Gerlach 2011 

From AGU release here

2011-06-15 23:26:11


Quite informative, especially figure 2.

"The ACM (anthropogenic CO2 multiplier) values related to the preferred estimate rise gradually from about 18 in 1900 to roughly 38 in 1950; thereafter they rise rapidly to approximately 135 by 2010."

We should add this figure!

Impressive, too:

Supereruptions 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. Interestingly, these calculations strongly suggest that present-day annual anthropogenic CO2
emissions may exceed the CO2 output of one or more supereruptions every year.

We should add this figure!

2011-06-16 04:34:26
Ari Jokimäki


This is good also because before this the latest reference for this issue was from Mörner who is not reliable source, so it feels strange using him as reliable source for this one issue.