Stratospheric polar vortex changes still trigger brutal U.S. winter cold snaps and extreme weather despite a warming climate.

Even in a warming climate, brutal cold snaps still hammer parts of the U.S., and a new study uncovers why. High above the ...

The mechanism involves atmospheric waves that bounce between the upper atmosphere and ground level, amplifying weather patterns and making them more extreme. Scientists call this “stratospheric wave ...

Despite a warming climate, bone-chilling winter cold can grip parts of the U.S. In a study appearing in Science Advances, ...

Because of an unstable polar vortex, experts have projected record low levels of Arctic sea ice for the coming winter.

Three factors are combining to increase the likelihood of a weaker polar vortex this winter, the website reports. And a ...

Instead of a tempest in a teapot, imagine the cosmos in a canister. Scientists have performed experiments using nested, ...

In the stratosphere over Siberia, temperatures recently jumped nearly 100 degrees Fahrenheit, shoving the polar vortex off its North Pole perch.

This is the hemispheric polar vortex—not the big bad polar vortex from television weather, but a permanent, extensive feature centered on both poles.

Earth’s major climate goal is too warm for the polar ice sheets, study says If Earth stays at its current levels of warming — below policymakers’ goal of 1.5 degrees Celsius — polar ice ...