Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 25, issue 20
Articles | Volume 25, issue 20
https://doi.org/10.5194/acp-25-13077-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/acp-25-13077-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 25, issue 20
Research article
 | 
21 Oct 2025
Research article |  | 21 Oct 2025

Impact of cirrus on extratropical tropopause structure

Nicolas Emig, Annette K. Miltenberger, Peter M. Hoor, and Andreas Petzold

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Short summary
This study presents in situ observations of cirrus occurrence from aircraft measurements in the extratropical transition layer (ExTL) using simultaneous measurements from two platforms. Lagrangian diagnostics based on high-resolution ICON simulations show long residence times of the cirrus in stratospheric air, allowing us to separate different diabatic processes during transit. The findings suggest that radiative diabatic cloud processes significantly impact the tropopause thermodynamic structure.
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The tropopause region in a changing atmosphere (TPChange)...
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