[Mike Darancette]

This has been reported in other literature

~2200BC ‘Major VOLCANIC eruption’. (possibly in/around Iceland, disrupting the North Atlantic and/or Arctic circulations).

Bitterly COLD winters & indifferent, occasionally poor summers.

http://booty.org.uk/booty.weather/climate/4000_100BC.htm

[SunkenCiv]

> 20. “The Long Summer”, Brian Fagan, Granta Books, 2004

That’s the reference (not even a page number).