Articles | Volume 17, issue 9
https://doi.org/10.5194/acp-17-6091-2017
https://doi.org/10.5194/acp-17-6091-2017
Research article
 | 
16 May 2017
Research article |  | 16 May 2017

Trace gas composition in the Asian summer monsoon anticyclone: a case study based on aircraft observations and model simulations

Klaus-D. Gottschaldt, Hans Schlager, Robert Baumann, Heiko Bozem, Veronika Eyring, Peter Hoor, Patrick Jöckel, Tina Jurkat, Christiane Voigt, Andreas Zahn, and Helmut Ziereis

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Short summary
We present upper-tropospheric trace gas measurements in the Asian summer monsoon anticyclone, obtained with the HALO research aircraft in September 2012. The anticyclone is one of the largest atmospheric features on Earth, but many aspects of it are not well understood. With the help of model simulations we find that entrainments from the tropopause region and the lower troposphere, combined with photochemistry and dynamical instabilities, can explain the observations.
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