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 ...

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

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