Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 24, issue 1
Articles | Volume 24, issue 1
https://doi.org/10.5194/acp-24-689-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-24-689-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 24, issue 1
Research article
 | 
17 Jan 2024
Research article |  | 17 Jan 2024

The interhemispheric gradient of SF6 in the upper troposphere

Tanja J. Schuck, Johannes Degen, Eric Hintsa, Peter Hoor, Markus Jesswein, Timo Keber, Daniel Kunkel, Fred Moore, Florian Obersteiner, Matt Rigby, Thomas Wagenhäuser, Luke M. Western, Andreas Zahn, and Andreas Engel

Supplement

https://doi.org/10.5194/acp-24-689-2024-supplement

Data sets

Mixing ratios of sulfur hexafluoride (SF6) in the upper troposphere Tanja Schuck https://doi.org/10.5281/zenodo.10018398

ATom: Merged Atmospheric Chemistry, Trace Gases, and Aerosols, version 2 S. Wofsy et al. https://doi.org/10.3334/ORNLDAAC/1925

HIPPO Combined Discrete Flask and GC Sample GHG, Halocarbon, and Hydrocarbon Data, version 1.0 S. Wofsy et al. https://doi.org/10.3334/CDIAC/HIPPO_012

Model code and software

mrghg/py12box: v0.2.1 Matt Rigby and Luke Western https://doi.org/10.5281/zenodo.6857447

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Short summary
We study the interhemispheric gradient of sulfur hexafluoride (SF6), a strong long-lived greenhouse gas. Its emissions are stronger in the Northern Hemisphere; therefore, mixing ratios in the Southern Hemisphere lag behind. Comparing the observations to a box model, the model predicts air in the Southern Hemisphere to be older. For a better agreement, the emissions used as model input need to be increased (and their spatial pattern changed), and we need to modify north–south transport.
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