Changes in polar vortex winds high in the stratosphere can alter the global conveyor belt of ocean circulation. (sciencemag.org)
While the upper - troposphere tropical warming induces a poleward shift of the jet in winter, Arctic Amplification and a weaker stratospheric polar vortex result in the opposite effect. (usclivar.org)
In the 1980s and 2000s, a series of stratospheric sudden warming events weakened polar vortex winds. (environmentalresearchweb.org)