Articles | Volume 22, issue 6
https://doi.org/10.5194/acp-22-3841-2022
https://doi.org/10.5194/acp-22-3841-2022
Research article
 | 
23 Mar 2022
Research article |  | 23 Mar 2022

Characterization of transport from the Asian summer monsoon anticyclone into the UTLS via shedding of low potential vorticity cutoffs

Jan Clemens, Felix Ploeger, Paul Konopka, Raphael Portmann, Michael Sprenger, and Heini Wernli

Data sets

The ERA-Interim archive Version 2.0 P. Berrisford, D. P. Dee, P. Poli, R. Brugge, M. Fielding, M. Fuentes, P. W. Kållberg, S. Kobayashi, S. Uppala, and A. Simmons https://www.ecmwf.int/node/8174

Model code and software

GitLab archive CLaMS https://jugit.fz-juelich.de/clams/CLaMS

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Short summary
Highly polluted air flows from the surface to higher levels of the atmosphere during the Asian summer monsoon. At high levels, the air is trapped within eddies. Here, we study how air masses can leave the eddy within its cutoff, how they distribute, and how their chemical composition changes. We found evidence for transport from the eddy to higher latitudes over the North Pacific and even Alaska. During transport, trace gas concentrations within cutoffs changed gradually, showing steady mixing.
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