Despite a warming climate, bone-chilling winter cold can grip parts of the U.S. In a study appearing in Science Advances, researchers found that two specific patterns in the polar vortex, a swirling mass of cold air high in the stratosphere, steer extreme cold to different regions of the country. One pattern drives Arctic air into the Northwest U.S., the other into the Central and Eastern areas.



Summary

A recent study in Science Advances reveals that specific patterns within the polar vortex, a high-altitude mass of Arctic air, dictate which regions of the U.S. experience extreme winter cold, even amidst a warming climate. The research identifies two key vortex patterns: one that directs frigid air towards the Northwest U.S., and another that pushes it into the Central and Eastern states. This discovery helps understand the regional variability of extreme cold events in the face of overall global warming trends.

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