When something blocks the jet stream’s westerly flow, it forces pockets of Arctic air southward. Scientists compare the wind strength of the vortex to a spinning top or ice skater. A strong ...

The polar vortex is a massive, swirling band of cold air that normally traps frigid temperatures around the Arctic. However, recent scientific studies show this vortex is weakening, which could have ...

As jet stream winds in the lower atmosphere interact with the displaced polar vortex, this sends Arctic ... the cold air heads, there will be guaranteed chances for snow and ice.

Summer sea ice in the ... stronger Arctic warming ... is expected to induce changes in atmospheric circulations," he said. "For example, causing more fluctuations of jet streams in the Northern ...

It normally circles the Arctic and it typically stays contained by a strong jet stream, but when this ring of frigid arctic air becomes unstable ... that dumped snow and ice across several ...

The Arctic has long filled ... It’s “sort of like our planetary air conditioning system,” said Twila Moon, deputy lead scientist at the National Snow and Ice Data Center.

With the Arctic air’s density and the evolving jet stream pattern ... In just six days, Great Lakes ice cover has surged by an astonishing 500 per cent, a testament to the frigid air’s ...