On Sat, Nov 28, 2009 at 11:10 PM, <rayzentz AT aim.com> wrote:
(snip).....Now, this isn't to say we can't do a better job of
stewardship. We can, and should. However, when Mount Pinotubo (sic)
spews forth more greenhouse gases in a single eruption than mankind
has in his entire history, ......
Dr. Ray,
The U.S. Geological survey estimates that the CO2 emissions from the eruption of Mt. Pinatubo as 42 Mt (million tons). The total CO2 from
all volcanic activity worldwide is about 130 Mt per year. Emissions
from human activity from the U.S. alone are about 6 Gt (billion
tons).
or this:
Gerlach (1991) estimated a total global release of 3-4 x 10E12 mol/yr
from volcanoes. While this is a conservative estimate, man-made
(anthropogenic) CO2 emissions overwhelm this estimate by at least 150
times." http://volcano.oregonstate.edu/education/gases/man.html
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