@LNIDA

I'm aware of that, I was talking about the sulphur. It does not seem to bother "the aviation industry and airline passengers" altough its all around already if we can believe the scientists.

Besides that what "eruption of this scale and type" they talk about while noone knows what size and type it will be and how long it lasts? Caldera collapse? More fissures around? Sub-glacier eruption? Flood? Ash? And what type of ash? More suplhur? Or none of those?

TBSC
 

A good question and i've not seen any info on it, i guess much would depend upon the level (FL) and concentration.

I think its more likely than not that something will happen in the next couple of months given all the data, hopefully it will be limited to subglacial and the floods that follow, but no one can tell, that the nature of the beast, but some excellent stuff on youtube if you search Icelandic volcanos