Articles | Volume 16
https://doi.org/10.5194/asr-16-49-2019
https://doi.org/10.5194/asr-16-49-2019
16 Apr 2019
 | 16 Apr 2019

A meandering polar jet caused the development of a Saharan cyclone and the transport of dust toward Greenland

Diana Francis, Clare Eayrs, Jean-Pierre Chaboureau, Thomas Mote, and David M. Holland

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Latest update: 14 Dec 2024
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Short summary
Changes in Polar jet circulation bring more dust from Sahara to Greenland. The poleward transport of warm, moist, and dust-laden air masses from the Sahara results in ice melting in Greenland. A meandering polar jet was discovered as responsible for both the emission and the poleward transport of dust. The emission has been linked to an intense Saharan cyclone that formed in April 2011, as a result of the intrusion of an upper-level trough emanating from the polar jet and orographic blocking.