In the atmospheric layer above it, about 10 to 30 miles up, is the stratospheric polar vortex, where every winter a sunlight-starved Arctic spins up a mass of cold air that, ultimately, dissipates ...

This will be the 10th time this winter that the polar vortex — which keeps the coldest of Arctic air penned in at the top of the world — stretches like a rubber band to send some of that big ...

A new study challenges the idea that climate change is behind the erratic wintertime behavior of the polar jet stream, the ...

The polar vortex usually keeps cold Arctic air confined above the North Pole, but experts believe it is starting to shift and ...

The Arctic is the northernmost region of the Earth, centered at the North Pole. It is a vast polar region at the top of the world. Unlike ...

ANNAPOLIS, Md. — A huge swath of the U.S. was blasted with ice, snow and wind on Monday as the polar vortex that dipped south over the weekend kept much of the country east of the Rockies in its ...

The dynamics of the stratosphere, particularly the behaviour of the polar vortex, have emerged as a cornerstone in understanding mid‐latitude weather extremes and seasonal climate variability ...

Unless society stops pumping more greenhouse gases in the air, “we can expect multiple factors to worsen summer extremes,” a ...