In article . com,
pen writes:
Well possibly, except that I saw a snippet in New Scientist a couple of
weeks ago which said that the dust from the Krakatoa eruption hung
around in the atmsophere for up to a century, with a measurable effect
on climate.

I haven't read the article, but that doesn't sound very plausible to me.
I thought that of the order of 2-3 years was the generally accepted
figure.

(ISTR that the year after the eruption was known as "the
year without a summer").

That was actually 1816, following another volcanic eruption.

So how much of global warming is attributable
to human activity and how much to relative lack of volcanic activity?

I would prefer not to believe in anthropogenic global warning, but I've
seen enough evidence to make me a reluctant convert.

Perhaps we should be trying to help one or two isolated ones along -
not sure quite how you'd do this!

Probably just as well that we can't.
--
John Hall
"Banking was conceived in iniquity and born in sin"
attributed to Sir Josiah Stamp,
a former director of the Bank of England