Chaitén Volcano Blows Again

Jeff:
The paper I got my ‘20% gas required to support a the plinian column’ figure from studied the CO2 proportion and found it to vary very widely from <<5%, which might have been the mode, to 50%. I wasn’t paying attention to the other components, like SO2.
Another paper, widely quoted by AGW believers, said steady state volcanic emissions were about 200M tons per year.
For calculations then I’d use normal crustal abundance at roughly 0.03%.
Pinatubo dumped 20M tons of S02 alone into the atmosphere. I calculated CO2 to be in low G ton range using the VEI 6 estimate of cubic kilometers ejected. AGW is supposedly 6 G tons per year.
This one has already deposited up to 10 inches over 1/3 the area of Minnesota.

How do they know how much SO2 gets ejected?

A couple of points.
Plinian volcanic eruptions end in a final large eruptive event. We don’t know how large and what the VEI number is until that event happens, which may be weeks or months away.
The long term effect of volcanos (of this size) on climate is not the issue. The issue is their effect over a one to two year time frame. And we know from the historical record that volcanic eruptions can cause widespread crop failure and famine.
A wider point is that were that to occur, then it would be a manmade disaster, because we failed to prepare for a predictable event. Just as the current cyclone disaster in Myanmar is largely manmade through failure to prepare.

Following James, the Yellowstone caldera, 70km wide, is our own monster-VEI 8-producing volcano. Residing above a Mantle hotspot it has moved as the continent has moved over the hot spot the last millions of years.
The mother of all calderas is Toba in Sumatra 200km wide.

Philip B said: “A wider point is that were that to occur, then it would be a manmade disaster, because we failed to prepare for a predictable event. Just as the current cyclone disaster in Myanmar is largely manmade through failure to prepare.”
By extension, that seems to imply ALL disasters, past present, and future could be considered “man made.” IMHO, there’s simply no way man can be so clairvoyant as to be able to prepare for all disasters.
Jack Koenig, Editor
The Mysterious Climate Project
http://www.climateclinic.com

Well, based on this article,
http://www.hawaiinews.com/archives/volcano_watch/000440.shtml
the annual total of CO2 from all volcanoes is around 200 million tones, which is just slightly higher than Canada’s annual CO2 emissions. Now this article has a strong ‘warmie” bias, so, may or may not have the number accurate.

Jeff:
While no expert, I see no reason to dispute the 200M ton figure, perhaps even as an average. A VEI 6 eruption is due a couple/century, a VEI 7 due a couple/millenium.
Where they go wrong is using arithmetic and ‘sinks’ and balanced equations(a la chemical reactions), instead of fluences with Diff.Eq. in related-rate calculations. As Spencer pointed out, today’s AGW fluence is 1/24,000th that of Gaia.

Hi everybody,
Below is a video with a thunderstorm in the volcano (move ahead up to 20 seconds).
(If I made any mistake inserting the video I will appreciate if anybody can help me to put in the rigth way)
[youtube=http://www.youtube.com/watch?v=dTPR6JvTmSY&hl=es]