Earth's largest jet stream unexpectedly disrupted

In early 2016, scientists first noticed an unexpected change in wind direction in the stratosphere some 25 kilometers above the equator. This shift signaled the beginning of a multimonth disruption of one of the most regular atmospheric phenomena known — the quasi-biennial oscillation (QBO). The disruption is the first such event observed in this system since record keeping began in the 1950s.

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Kate S. Zalzal

Kate Zalzal

Zalzal is a freelance writer and former editorial intern for EARTH. She holds a master's degree in geoscience from University of Massachusetts Amherst and most recently studied paleoclimatology at the University of Colorado Boulder and the University of Iceland in Reykjavik. 

Friday, January 6, 2017 - 06:00

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