Threatening earthquake activity for many days finally culminated in an eruption of the Bardarbunga volcano in Iceland early this morning.
The eruption seems to be mainly lava at the surface, but a larger explosive ash eruption is still possible, which is what would be required to have any effect on global climate.
A more spectacular eruption occurred in Papua New Guinea about the same time. Tavurvur volcano erupted with an ash cloud reaching to 60,000 ft. altitude, a beautiful photo of which was taken by Joyce Lessimanuaja and tweeted by Shelley Hendel (@shelleyjlh):
This eruption barely showed up on NASA MODIS imagery this morning, so I doubt it will result in any climate effects, either.
There is also some pretty awesome video of the Tavurvur eruption, which was very fiery: