This is the first notice of serious concern regarding this volcano. On top of all that we are talking about this:
'Approx 8600 years ago, Bardarbunga produced the largest known lava flow during the past 10,000 years on earth (more than 21 cubic kilometers of volume). The lava was erupted from the Veidivötn fissure system and traveled more than 100 km to the south coast.'
The quoted diameter is wrong. It is 6000 feet and not 6 miles. However it is part of the system that has dumped the above quoted volume so there is no comfort there. another source quote 80 sq kilometers though.
What i am trying to say is that this able to shut Europe down agriculturally for twenty years as did occur in 1159BC. Sidestepping that level of disruption will be a huge challenge to all governments.