Articles | Volume 4, issue 1
Research article
16 Jan 2023
Research article |  | 16 Jan 2023

Increased vertical resolution in the stratosphere reveals role of gravity waves after sudden stratospheric warmings

Wolfgang Wicker, Inna Polichtchouk, and Daniela I. V. Domeisen

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This preprint is open for discussion and under review for Weather and Climate Dynamics (WCD).
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Cited articles

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Short summary
Sudden stratospheric warmings are extreme weather events where the winter polar stratosphere warms by about 25 K. An improved representation of small-scale gravity waves in sub-seasonal prediction models can reduce forecast errors since their impact on the large-scale circulation is predictable multiple weeks ahead. After a sudden stratospheric warming, vertically propagating gravity waves break at a lower altitude than usual, which strengthens the long-lasting positive temperature anomalies.