Organic aerosols mixing across the tropopause and its implication for anthropogenic pollution of the UTLS

Breuninger, Anna; Joppe, Philipp; Wilsch, Jonas; Schwenk, Cornelis; Bozem, Heiko; Emig, Nicolas; Merkel, Laurin; Rossberg, Rainer; Keber, Timo; Kutschka, Arthur; Waleska, Philipp; Hofmann, Stefan; Richter, Sarah; Ungeheuer, Florian; Dörholt, Konstantin; Hoffmann, Thorsten; Miltenberger, Annette; Schneider, Johannes; Hoor, Peter; Vogel, Alexander L.

doi:10.5194/acp-25-16533-2025

Articles | Volume 25, issue 22

https://doi.org/10.5194/acp-25-16533-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

The tropopause region in a changing atmosphere (TPChange)...

https://doi.org/10.5194/acp-25-16533-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 25, issue 22

Research article

|

24 Nov 2025

Research article |

| 24 Nov 2025

Organic aerosols mixing across the tropopause and its implication for anthropogenic pollution of the UTLS

Anna Breuninger, Philipp Joppe, Jonas Wilsch, Cornelis Schwenk, Heiko Bozem, Nicolas Emig, Laurin Merkel, Rainer Rossberg, Timo Keber, Arthur Kutschka, Philipp Waleska, Stefan Hofmann, Sarah Richter, Florian Ungeheuer, Konstantin Dörholt, Thorsten Hoffmann, Annette Miltenberger, Johannes Schneider, Peter Hoor, and Alexander L. Vogel

Supplement

https://doi.org/10.5194/acp-25-16533-2025-supplement

Data sets

Organic aerosols mixing across the tropopause and its implication for anthropogenic pollution of the UTLS A. L. Vogel and A. Breuninger https://doi.org/10.5281/zenodo.15680610

TPEx 2024 observational data and model data along flight path - Merged H.-C. Lachnitt https://doi.org/10.5281/zenodo.15371527

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Short summary

This study investigates molecular organic aerosol composition in the upper troposphere and lower stratosphere from an airborne campaign over Central Europe in summer 2024. Via ultra-high-performance liquid chromatography and high-resolution mass spectrometry of tropospheric and stratospheric filter samples, we identified various organic compounds. Our findings underscore the significant cross-tropopause transport of biogenic secondary organic aerosol and anthropogenic pollutants.