North American cooling signature of strong stratospheric wave events depends on the QBO phase
Xiuyuan Ding,
Gang Chen,
Gudrun Magnusdottir
Abstract:Extreme stratospheric wave activity has been linked to surface cold extremes over North America, but little is known whether the Quasi-biennial Oscillation (QBO) plays a role in this linkage. Here, by comparing strong stratospheric wave events during the westerly phase (wQBO) with those during the easterly phase (eQBO), we show that the cooling signature following strong wave events depends on the QBO phase in observations. During wQBO, strong wave events are followed by an increased risk of North American col… Show more
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