The term “polar vortex” usually refers to the gigantic circular upper air weather pattern in the Arctic region. It is a normal pattern that is stronger in the winter and keeps some of the coldest ...
It's a robust pattern that comes from a very simple rule, and it's just something that no one had really thought to measure before." Scott Weady, Research Fellow, Center for Computational Biology ...
He adds that the circular patterns are “an interesting detail” that had not been studied in the past.