[cogitator]

The so-called "Year Without A Summer" after Krakatau blew up in the 1800s stands testament to this.

Krakatau did cool things off, but "The Year Without a Summer" was in the 18-teens, after Tambora (not quite as explosive, but a lot more ash into the atmosphere).

[MD_Willington_1976]

http://www.islandnet.com/~see/weather/history/1816.htm

Quite a few of them blew their tops...

[Maceman]

The so-called "Year Without A Summer" after Krakatau blew up in the 1800s stands testament to this.

Here's what Wikipedia has to say about it, FWIW. Year Without a Summer.