Your hypothesis reminds me of the Gulf stream collapse hypothesis. Because the Gulf stream heats Europe this would mean Europe will be cooler and probably drier

Your hypothesis reminds me of the Gulf stream collapse hypothesis. Because the Gulf stream heats Europe this would mean Europe will be cooler and probably drier than now. I remember that in the seventies in Switzerland people were discussing the return of the ice age. The glaciers covered more than 80% of Switzerland and carved out the lakes in the plateau and on the edge of the Alps. I vividly remember an artist's visualization of this event: a large bluish glacier looming behind the houses of the old city of Bern.