There is also a possibility of more vegetation in the arctic → more BVOC (biogenic volatile organic compounds) emissions from the vegetation → more aerosols → m

There is also a possibility of more vegetation in the arctic → more BVOC (biogenic volatile organic compounds) emissions from the vegetation → more aerosols → more clouds, which could increase the albedo (albedo as seen from space) and thus reduce warming. But these interactions are not very well know currently.