Why not just supply your proof?It gets stopped by the Gulf Stream. Look it up.
The Fram Straight is where Arctic ice enter the Atlantic, right where the Gulf Steam passes Iceland.
In your world sunspots must have caused these holes rather than the mechanics that support an expanding earth which means most of the planet's heat comes from below.
http://icelandreview.com/news/2017/09/04/geothermal-heat-forms-giant-holes-glacier