The recent erratic behaviour of the polar jet stream isn't out of the ordinary, researchers have found by compiling data from ...

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

This is different than Francis’ research on the jet stream and the polar vortex that induces winter extremes, said Mann. There’s also a natural connection.

Every other year or so, the polar vortex—a circular flow in the stratosphere—becomes unstable, which can then cause the narrow band of strong winds that form the jet stream to become more wavy ...

When the AO turns toward a negative phase, however, it means that the polar vortex is weaker than normal. This can force that circulation of winds to become unstable and wavy, often sending frigid ...

When the vortex weakens—which it does on occasion—the jet stream becomes wavy, bulging south and allowing Arctic air to flow down across North America and Eurasia, causing temperatures to ...

Pennsylvania town takes hilarious approach to try to cut down speeding with wavy road lines Rescued NASA astronauts deliver message to Trump, Musk after 'incredible' nine months in space ...

WASHINGTON (AP) — The polar vortex hit its peak across much of America on Wednesday, with an icy grip that made Arctic Greenland seem like a toasty vacation spot in comparison. Even Mars has ...

More than 95 million people are facing gripping cold Tuesday as a polar vortex sends temperatures plunging to record levels, closing schools, bursting pipes and forcing communities to set up more t… ...