[PRengin]

Of course, hoping for a volcanic eruption to slow global warming is roughly the equivalent of hoping to lose one of your legs in an auto accident as a strategy for losing weight. It is highly effective in the short term, but offers mid-term inconveniences, and does nothing to stop the problem in the long run.

Off the cuff, I would imagine that the sudden cooling would lead to an increased burning of fossil fuels for heating, thus exacerbating the problem.