Europe braces for significant continent-wide cold outbreak

Europe braces for significant continent-wide cold outbreak

After the Sudden Stratospheric Warming (SSW) event at the beginning of January 2021 and the Polar Vortex collapse, weather patterns across the northern hemisphere became very dynamic and progressive. This has set the stage for a potentially quite significant cold…

Winter cold extremes linked to high-altitude polar vortex weakening

Winter cold extremes linked to high-altitude polar vortex weakening

Over the last decades, the stratospheric polar vortex has shifted towards more frequent weak states which can explain Eurasian cooling trends in boreal winter in the era of Arctic amplification. When the strong winds that circle the Arctic slacken, cold polar air…

More bursts of frigid air as Arctic polar vortex shifts

More bursts of frigid air as Arctic polar vortex shifts

A new research suggests that North America will experience more outbursts of frigid air in February and March as the wintertime Arctic stratospheric polar vortex continues its persistent shift toward the Eurasian continent. For parts of Europe and Asia, it would…

Polar vortex behind U.S. big chill explained

Polar vortex behind U.S. big chill explained

The chilling weather phenomenon that hit much of the U.S. in January is explained by scientist Eric Fetzer using data from NASA's AIRS instrument. 

This movie of temperature observations from NASA's Atmospheric Infrared Sounder (AIRS) instrument on

Arctic blast hits Canada and USA

Arctic blast hits Canada and USA

"Polar vortex" takes aim on United States with dangerous life-threatening temperatures. National Weather Service warned that much of the US will see coldest temperatures in about 20 years as an arctic cold front descends.

A fresh blast of arctic air

Counterclockwise hurricane forming in Atlantic

Counterclockwise hurricane forming in Atlantic

The Hurricane Atlantic Satellite image shows clouds by their temperature over the Atlantic Ocean. Red and blue areas indicate cold (high) cloud tops.Atlantic VIS LoopCoriolis effect In physics, the Coriolis effect is an apparent deflection of moving objects