Iceland Volcano

Here are some pictures from the recent volcano explosion http://www.boston.com/bigpicture/2010/04/icelands_disruptive_volcano.html

I was there about a year ago, and the guy who took us out to the glacier called Iceland the world's anus - he said it is constantly gassy and exploding. Guess he was right.

Has anyone read anything about long term effects of so much ash?