Articles | Volume 26, issue 12
https://doi.org/10.5194/acp-26-9083-2026
https://doi.org/10.5194/acp-26-9083-2026
Research article
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29 Jun 2026
Research article | Highlight paper |  | 29 Jun 2026

Quantification of inmixing of Asian Monsoon air by multi-species classification in a match flight experiment

Jan Kaumanns, Jörn Ungermann, Bärbel Vogel, Sören Johansson, Erik Kretschmer, Felix Plöger, Peter Preuße, Wolfgang Woiwode, and Martin Riese

Data sets

Data supplement for: 10.5194/egusphere-2026-650 Jan Kaumanns et al. https://doi.org/10.5281/zenodo.20265339

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Editorial statement
The Asian Summer Monsoon anticyclone in the upper troposphere and lower stratosphere is recognised as key feature of the circulation that organises transport of pollutants into the stratosphere. This paper combines in-flight observations and modelling to give a detailed picture of mixing processes in this region. Measurements from the new GLORIA instrument were used to reconstruct the three-dimensional distribution of important chemical species over a region around the aircraft with 400km horizontal extent and 6km vertical extent. This provides important information about the influence on the stratospheric composition of pollutants emitted from different regions in the tropics.
Short summary
During the PHILEAS aircraft campaign a self-matching experiment was conducted to study the mixing of Asian Summer monsoon air into the upper troposphere – lower stratosphere. We present the first 3-D tomographic observations of this mixing for multiple trace gas species. We use advanced clustering to identify the types of air and their transport pathways, particularly into the stratosphere. Simulations of surface-origin tracers link several of these air types to different source regions.
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