Major Atlantic ocean current system might be approaching a critical threshold.
'The major Atlantic ocean current, to which also the Gulf stream belongs, may have been losing stability in the course of the last century.'
(Potsdam Institute for Climate Impact Research, Potsdam Germany) >

https://www.pik-potsdam.de/en/news/latest-news/major-atlantic-ocean-current-system-might-be-approaching-critical-threshold