Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 26, issue 16
Articles | Volume 26, issue 16
https://doi.org/10.5194/acp-26-12067-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/acp-26-12067-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 16
Research article
 | 
25 Aug 2026
Research article |  | 25 Aug 2026

Evidence of gravity wave contribution to vertical shear and mixing in the lower stratosphere

Madhuri Umbarkar, Daniel Kunkel, Annette Miltenberger, Hans-Christoph Lachnitt, Thorsten Kaluza, Cornelis Schwenk, and Peter Hoor

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Latest update: 26 Oct 2026
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Short summary
We present an extratropical cyclone case study over the North Atlantic focusing on the role of atmospheric gravity waves (GW) in the generation of strong vertical shear and (clear-air) turbulence (CAT), as well as their impact on tracer distribution in the lowermost stratosphere. Our findings suggest that GW related processes should be considered as a key for upper troposphere lower stratosphere (UTLS) transport and mixing, and as an important candidate for the interpretation of CAT in the UTLS.
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