"Fred J. McCall" wrote in message
...
"Ralph Nesbitt" wrote:

:A number of volcanic eruptions will result in a large quantity of
material
:in the atmosphere. This material will reflect some energy from the sun
back
:into space resulting in a global reduction of temperature. Essentially
the
:same process referred to as "Nuclear Winter" except with a natural
:initiation process instead of "Nuclear Doomsday".

'Nuclear Winter', of course, being essentially a fraud (the numbers
used were fudged by an order of magnitude to make it come out the way
the proponents wanted it to).

Given that, it's going to take a hell of a lot of volcanoes to get a
change of more than a degree or two lasting more than a year or two
(which I think is pretty much the record for volcanic effects to
date).

I used the "Nuclear Winter" analogy because it is a commonly known
phenomena.

A volcanic event with a VEI of 6, 7, or 8 will most likely affect world wide
weather conditions. See:
http://volcano.und.nodak.edu/vwdocs/eruption_scale.html
--
"Ignorance is preferable to error, and he is less remote from the
truth who believes nothing than he who believes what is wrong."
-- Thomas Jefferson

Ralph Nesbitt