This tri-core vortex formation that has a meandering shape boundary as observed in the satellite image below is the Arctic polar vortex. Atmospheric air molecules are bonded in intermolecular cohesion, therefore when an Arctic polar vortex is generated, all the atmospheric layers at the North Pole driven by a rotation force would spin in unison. At the North Pole, when a cyclonic wind current in its path is met with blocking mountain ranges, it is dragged and thus its overall intensity would be weaken.
Although the altitude of stratosphere is from 10 kilometers to 50 kilometers, the higher density troposphere air mass at the bottom blocked by mountain ranges acts as a brake, dragging the air at stratosphere from spinning with full strength. This would absolutely reduce the intensity of the Arctic polar vortex at the North Pole, as the result the vortex column could not be formed like the Antarctica polar votex on the opposite side of the Earth that is relatively free of blockage.
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