Articles | Volume 3, issue 4
Research article
04 Nov 2022
Research article |  | 04 Nov 2022

Stratospheric downward wave reflection events modulate North American weather regimes and cold spells

Gabriele Messori, Marlene Kretschmer, Simon H. Lee, and Vivien Wendt

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Short summary
Over 10 km above the ground, there is a region of the atmosphere called the stratosphere. While there is very little air in the stratosphere itself, its interactions with the lower parts of the atmosphere – where we live – can affect the weather. Here we study a specific example of such an interaction, whereby processes occurring at the boundary of the stratosphere can lead to a continent-wide drop in temperatures in North America during winter.